Application of SFRC in Critical Members

Although Steel Fibre Reinforced Concrete (SFRC) has a history in academia of over 50 years, its adoption in practice has mainly been limited to non-critical elements. In order for SFRC to be used on a regular basis, a rational framework of material models identifying the key material constitutive parameters must be established... More Info

Behaviour of Square HSC Columns Reinforced With Steel Equal Angle (SEA) Sections under Axial Compres

This webinar presents a new method to reinforce square concrete columns with steel equal angle (SEA) sections and aims to provide insight into the results of an experimental investigation, on the behaviour of square High Strength Concrete (HSC) columns reinforced longitudinally with either steel bars or Steel Equal Angle (SEA) sections under concentric axial compression.  More Info

Design & Detailing for Extreme Events

Extreme events encompass a range of phenomenon. With the rise and speculation surrounding climate change and noticeable shifts in various aspects of regional, metropolitan and rural environments, a range of practitioners must be aware and understand the implications this has on important design and detailing aspects. More Info

Piling - Success in Motion: Volume 1

Please join us for the first of four seminars, covering the use of concrete piles across a range of different applications while challenging some common misconceptions regarding pile design. The speakers bring much experience in their areas of expertise and their talks are relevant to those working in the design, construction and management of structures. More Info

Piling - Loads and Elasticity: Volume 2

Deep foundation especially pile foundation is best suited and mostly used for a low bearing and bad textured soil or for the heavy load structures. Bearing capacity is the deciding factor for the geotechnical design of foundation. Bearing capacity of soil is defined as load bearing capacity of the soil without having different settlement as well as shear failure in the underneath soil of the foundation. More Info

Piling - The Sum Of The Parts: Volume 3

The Iluka "Spirit" re-development is an 88 storey mixed-use residential tower with commercial space at street level on Surfers Paradise waterfront. Once complete it will be the tallest tower in terms of usable space in Queensland.

All constructed on a site with only a 3600m2 footprint. More Info

Piling - Sunshine Coast University Hospital: Volume 4

Considerable attention was devoted to the assessment of geotechnical design parameters, which required analyses and correlations, or methods of testing piles and pile elements to obtain these parameters. More Info

Concrete Placement, Defects and Better Concrete. Volume 2

This eConcrete presentation is a recording of the Institute’s seminar on Cracks and Crack Control in Concrete Structures. It looks at how concrete cracking can be controlled by decisions made at the design stage and during the practical application of the material. The module will also consider where the risk lies in cracking, who is responsible, and the impact it can have on the overall performance of the concrete. More Info

Concrete Placement, Defects and Better Concrete. Volume 1

This eConcrete presentation is a recording of the Institute’s seminar on Cracks and Crack Control in Concrete Structures. It looks at how concrete cracking can be controlled by decisions made at the design stage and during the practical application of the material. The module will also consider where the risk lies in cracking, who is responsible, and the impact it can have on the overall performance of the concrete. More Info

Steel Fibres: Design, Quality and Performance

The concept of using fibres as reinforcement is not new. Fibres have been used as reinforcement since ancient times. Historically, horsehair was used in mortar and straw in mud bricks. With the recent adoption of Steel Fibres into the AS5100.5 Bridge Code, the need to better understand the application of Steel Fibres in concrete has come to the fore. More Info

Manly House - Minimalist Modern Home

Every aspect of the concrete's design, detailing, and actual construction - whether a beam, a slab, or a column - had the concrete working near to its ultimate capacity, with very little margin or redundancy. It is also a project where the concrete is the "hero of the dish" being fully exposed and on display More Info

Design Challenges for Piles to Support Tall Buildings

The last two decades have seen a remarkable increase in construction of tall buildings in excess of 150m in height, and an almost exponential rate of growth. A significant number of these buildings have been constructed in the Middle East and Asia, and many more are either planned or already under construction. “Super-tall” buildings in excess of 500m in height are presenting new challenges to engineers, particularly in relation to structural design 

This webinar reviews some of the challenges that face designers of foundations for very tall buildings, primarily from a geotechnical viewpoint. More Info

Review of Current Piling Techniques

Contemporary design approaches to piling are covered and the consequential relationships among the various piling methods and their parameters assessed. The review is centred on vertically loaded axial piles in both cohesive and non-cohesive soils.  More Info

CIA Recommended Practice Handbooks Reviewed

Following consultation and review, the Concrete Institute of Australia’s Durability Technical Committee have been working on comprehensive and unified durability guidance that was deemed necessary by industry. The concrete durability topics considered under this review are: planning, exposure classes, deemed to comply requirements, good practice, modelling reinforcement corrosion, cracks and crack control, and testing. This presentation provides a summary on these.
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BIM - The future of construction

There is a common misconception that BIM (Building Information Modeling) means 3D design. In fact, it's much more. BIM is a process for creating and managing all of the information on a project – before, during and after construction. The output of this process is the Building Information Model, the digital description of every aspect of the built asset.   More Info

Legal Issues in Construction

In a contract for the supply of goods or services, a warranty is an assurance provided by one party to another party about the quality of goods or services. Warranties may be expressly set out in the contract, or they may also come from statute or, alternatively, be implied by common law. More Info

Concrete Testing and it's Place in The Condition Assessment of Buildings and other Structures

The continuous monitoring of concrete structures using suitable testing methods, will lead to a reduction in the rate of deterioration of concrete structures thereby increasing the life span of structures. But there is no ‘one-size-fits-all’ approach for such a task More Info

Non Destructive Testing

Nondestructive testing or non-destructive testing is a wide group of analysis techniques used in science and technology industry to evaluate the properties of a material, component or system without causing damage. More Info

Concrete Variability

Raw materials are dug from the ground and are intrinsically variable. For example,  limestone from one end of the quarry might well contain more clay or silica than limestone from the other end.

Fuels are variable - coal varies in ash and sulfur contents and these days, a works may also burn ancillary fuels such as solvents or car tyres.

Variation in raw materials and fuels are likely to result in changes in kiln conditions and consequently, to some extent at least, to changes in the concrete. Of course, some changes may be for the better, but unless they are maintained consistently, the result will be variability in the production opf concrete. More Info

Legal Issues in Construction

With the number of cranes that span the Australian construction landscape, there has been a considerable increase in high rise construction to accomodate the need for high density living. What happens when contracts are breached, or technical and systemic defects become apparent? Experienced industry lawyer, Mr Paul Jurdeczka (Chambers Russell Lawyers) discusses contracts, breaches, and faults, when issues such as waterproofing arises. More Info

Water Canal Specifications and Shotcrete

Concrete shotcrete is often used for canal lining due to its high structural strength and longevity. The Shotcrete  used for canal lining is typically non-reinforced, as a way to reduce cost. The design of a suitable shotcrete mix is imperative to the successful completion of the project, however, consideration has to be given to the geotechnical aspect of the project

Dr Anthea Airey, goes into detail when analysing both canal projects, enabling the delegate to gain valuable insight into the techniques and methodology used to successfully complete both projects
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Innovation in Concrete

In many cases the innovation will lead to changes that are outside of the protection of compliance to Australian Standards and so lead to tension between the designers need for improved products and the building codes that require compliance with Australian Standards.  More Info

Challenges in Material Specification

The main challenge that consultants face today is designing concrete structures to satisfy client performance expectations. In most major projects, the set of specifications are generally selected by the client. In small projects, the consultant faces the challenge of selecting the relevant Australian Standard or developing project-specific specifications. More Info

The Tale of Two Houses

Investing in quality design that addresses functional, economic, cultural, social and environmental criteria in addition to aesthetic considerations in a residential property, is an investment in the future. To achieve this level of resolution requires high level, integrated design thinking supported by engaged and committed engineers and sub-contractors who are passionate about achieving optimal outcomes for their project. More Info

Concrete Fasteners: A technical view

Today professionals can choose from a wide range of fasteners. This eConcrete presentation will give an overview of the solutions that are available in the market place and provide guidelines on how to decide which fastener to use for a specific application. Anchor design, certification and installation are safety critical and engineers should have a good understanding of the site conditions, materials and the best suited anchors that will provide a lasting solution More Info

Specifications for Concrete Infrastructure

Local government uses concrete to construct various assets including footpaths, cycle ways, kerbs and gutters, pavements for high traffic areas, roundabouts, intersections, parking areas and stormwater drainage systems. Appropriate design methods and construction techniques are essential to the successful procurement of local government infrastructure. Proactive maintenance practices and systems ensure that assets serve the needs of the community over a long period of time. More Info

Sky Tower - Brisbane's Tallest Building

The Brisbane landmark project - Sky Tower.   The building being constructed by Hutchinson Builders will be the tallest residential tower in Brisbane standing at 270 metres.  The seminar will provide details on different aspects of the design, construction and materials.   The project also presented various challenges during the construction, which will be reviewed with the solutions developed to enable milestones to be met. More Info

Sky Tower - Pumping 91 Floors

The seminar will provide details on stringent performance requirements with the supply of concrete to the Brisbane landmark project - Sky Tower. Michael highlights the degree of planning that was required from the ready-mix concrete supplier before the commencement of the project. Concrete supply to the Sky Tower presented a unique range of challenges such as logistics, pumpability of the concrete, flow rate and seasonal concrete mix designs.


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Material Specification for Concrete Performance: A Consultant’s View

Ready-mix plants around the country sell hundreds of different concrete mixes. Fine-tuning your mix and your techniques can get pretty complicated. But you do well to grasp the essentials. Having a understanding of the constituents of concrete will go along way to delivering a robust and durable concrete structure. More Info

Temporary Works of Precast Panels

Contractors should be able to demonstrate that they have in place effective arrangements for controlling risks arising from the use of temporary works. These are usually captured in a temporary works procedure which will contain most or all of the following elements. More Info

Construction Law - Who's responsible

One of the most relevant and debated aspects of the construction industry is the resolution of disputes. Australia has a sophisticated construction law system and construction dispute resolution involves a range of professionals and specialist forensic engineers that go much beyond the legal activity. This makes the role of experts vital for an appropriate solution of a contest.  More Info

Recent bridges failures and the evolution of bridge engineering - some insights - The bridge engineer

Structural integrity is the ability of an item—either a structural component or a structure consisting of many components—to hold together under a load, including its own weight, without breaking or deforming excessively. It assures that the construction will perform its designed function during reasonable use, for as long as its intended life span. So why do we experience catastrophic bridge collapses.


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Rapid Concrete Pavement Repair

Due to the heavy traffic volumes today, state highway agencies do not often have the luxury of
completely re-routing traffic and replacing the worn pavements in their entirety. Most interstate pavements need to be repaired or replaced while under traffic. As a result, new demands are being placed on the performance of concrete materials.

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Lifting Anchor Design in Accordance with AS-3850

Lifting anchors are subject to high load concentration, possible impact loads and extreme environmental
conditions (temperatures, corrosion etc), requiring materials of high toughness. This has been recognised in AS3850 which specifies minimum toughness properties.

Precast concrete offers durable, flexible solutions for floors, walls and even roofs in every type of domestic construction from individual cottages to multi-storey apartments, the lifting systems being developed have become more efficient, reliable and safe.

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Service behaviour of pre-stressed members

This presentation presents a detailed description and explanation of the behaviour of pre-stressed concrete members and structures both at service loads and includes worked examples. More Info

Concrete Mix Design to Meet Specifications for Various Applications

The concrete mix design involves various steps, calculations and laboratory testing to find right mix proportions. This process is usually adopted for structures which requires higher grades of concrete and large construction projects where quantity of concrete consumption is huge. The process of designing a suitable concrete mix includes local material knowledge and the co-operation of suppliers.

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Back to Basics - Pumping Concrete

We take the equipment for granted too often because normally when everything is going well our level of confidence is high. We find ourselves “in the groove“ and we do our jobs and make it look easy to observers. What separates the best ops from the average is how the sudden, unexpected interruption of their ‘rhythm’ is handled. These interruptions can often take place in milliseconds and how quickly and appropriately the operator reacts can mean the difference between a successful outcome with a signed invoice, or a failed pour.


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The New AS3600:2018 Concrete Structures Code

Alison Scotland of Standards Australia explains how a code such as AS 3600 - Concrete Structures is developed and maintained, she helps the viewer understand why errors creep into a code and what is done to correct these.

Alison goes on to clarify the internal workings of Standards Australia and how committees function and exactly how much work goes into developing a successful code such as the recently launched AS 3600 - 2018.

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There is no such thing as inherent concrete strength

Chris Jones of Boral Australia discusses the calculation for autogenous shrinkage in the Australian Standard AS 3600, he highlights possible improvements, as well as the pro's and con's of a new proposed  test method.




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NDT Concrete Testing Standards, Codes and Specifications

NDT of concrete was found to be gaining increasing acceptance as a means of evaluating the strength, uniformity, durability and other properties of existing concrete structures. On-site evaluation of concrete  is the main challenge in the condition assessment of existing infrastructure as owners and managers of such facilities prefer non-destructive methods to avoid further damage to an already struggling structure.




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Concrete Cracking and Crack Injection

Cracks in a concrete structure can cause the ingress of water, decreased structural integrity, and can lead to further degradation of a structure over time. Cracks have resulted in wet basement walls or flooded basements, most concrete construction jobs require some remedial action to fix cracks in concrete.
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Watertight Concrete Structures

In reality, there are many applications of concrete in which permeability plays an important part in concrete performance. Virtually every home or building basement is in need of watertight concrete. In fact, concrete must be impermeable for nearly every below ground application. More Info

Achieving a watertight concrete structure

To achieve watertight concrete structures that are suitable for the service conditions, it requires the synthesis of appropriate material selection and mix design, adequate structural design, detailing and high standards of construction techniques and practices. All of these aspects must be adequately dealt with simultaneously to achieve a watertight structure. More Info

Watertight engineering solutions

Ideally water will seep away quickly and immediately without building up pressure against a concrete structure, however; the reality is that water builds up pressure along the deep foundations and the basement of a structure and results in water damage. 
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The challenges of delivering high performance repair to concrete structures in a marine environment

It has become an economic disaster when urban dwellings, large bridges, or major marine structures deteriorate just after a few years in service, the importance of effective remedial work cannot be overstated.

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Seismic design fundamentals and recent updates

The many earthquakes experienced all around the country, including the 1989 Newcastle event which is now all but a distant memory for many people, is evidence that major earthquakes can occur anywhere in Australia. 



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Fire-Induced Concrete Spalling - The End of the Beginning

The response to realistic fires of whole concrete structures presents yet greater challenges due to the interactions of structural elements, the impact of complex small-scale phenomena at full scale, and the spatial and temporal variations in exposures, including the cooling phase of the fire. More Info

The use of a proprietary geopolymer concrete in sewer infrastructure applications

Multiple species of bacteria found in corroding sewer pipes and artificial wastewater, microorganisms that produce sulfuric acid accelerate the deterioration of concrete sewer pipes in a process termed “Microbial Induced Concrete Corrosion”. More Info

Effect of binder design on alkali-silica reaction in alkali-activated materials

Alkali–silica reaction takes place between alkalis (Na2O and K2O) from cement or other sources and certain reactive silica minerals present in the coarse or fine aggregates. The chemical reaction can result in abnormal expansion and cracking of concrete.

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Predicting Thermal Cracking

There are many forces within a concrete element and these must be understood and controlled starting with the planning stage. One of the reasons concrete cracks is due to “thermal cracking” and this relates to the temperature development as concrete hydrates as well as temperature differences within the concrete.






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30 Years of DEF - An overview

Delayed ettringite formation (DEF) is expansion and cracking of concrete associated with the delayed formation of the mineral ettringite which is a normal product of early cement hydration. DEF is a result of high early temperatures in the concrete which prevents the normal formation of ettringite

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Investigating a new technology for long term protection of concrete assets in harsh environments

Microbiologically induced deterioration causes corrosion of concrete by producing biogenic sulfuric acids that degrade concrete components and thus compromise the integrity of sewer pipelines and other structures, creating significant problems worldwide. Understanding of the fundamental corrosion process and the causal agents will help develop an appropriate strategy to minimise repair costs. More Info

Soft computing techniques for the evaluation of ASR affected concrete

The use of soft computing models that are tolerant of imprecision, uncertainty, partial truth, and approximations were employed to give solutions to complex real-life ASR related problems.
Considering the importance of the problem, extensive studies mostly by means of experimental investigations have been carried out to gain understanding of the impact that ASR has on the mechanical properties of both plain and reinforced concrete specimens.  More Info

Effect of Geogrid Reinforcement on the Properties of Concrete

A limited number of studies have investigated geogrids as a potential alternative to steel reinforcement for Portland cement concrete, especially in situations where using steel reinforcement may not be suitable due to constructability and durability limitations. More Info

Strength Modelling of 3D-printed Boron-based Geopolymers via Machine Learning Techniques

Geopolymers and alkali-activated materials are considered by some as the cementitious materials of the future, to be applied mainly in building and civil infrastructures . What makes these materials widely attractive is the low CO2 emission during the production process, coupled with mechanical properties at least comparable to Portland cement (OPC).

The aim of this study is to build a model that predicts the compressive strength of geopolymer samples made via 3D-printing process. 
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Different binders and the effect on microbiologically induced corrosion of concrete

Microbial Induced Corrosion of Concrete (MICC) is a progressive three-stage deterioration process that is primarily associated with sulfur-oxidizing bacteria. To mitigate bacteria activity, it is useful to use a materials system that can buffer the acid solution of the bacterial affected concrete.

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Concrete Cracking: Causes And What Can Be Done

Concrete provides structures with strength, rigidity, and resilience from deformation. These characteristics, however, result in concrete structures lacking the flexibility to move in response to environmental or volume changes. Cracking is usually the first sign of distress in concrete.
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Assessment of ASR expansions using an ultra-accelerated test

An ultra-accelerated autoclave test is being developed at the University of Technology Sydney to study the effect of ASR expansion on plain, reinforced and prestressed concrete elements. This webinar discusses the results obtained on plain concrete prisms under ultra-accelerated conditions in an autoclave.

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Time dependent deformation of fibre reinforcement

Failure to account for creep and shrinkage of the concrete can lead to a serious under‐estimation of the extent and severity of cracking, as well as long‐term curvatures and deformations.

The inclusion of steel or polypropylene fibers in the concrete mix can substantially improve the serviceability characteristics of reinforced concrete members. For fiber reinforced concrete (FRC) members, the fibers enhance the post-cracking stiffness, thereby reducing the short and long‐term deflections and significantly reduce the width of cracks and the spacing between them.
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Design for Serviceability with the New Australian Concrete Codes

Australian Standard AS3600 was recently updated and released in 2018. However, the Standard was also subjected to a number of challenges during this revision. Subsequently, there have been a number of questions raised by designers and specifiers, as well as practitioners and suppliers, which have created some confusion, and a lack of clarity in some areas. More Info

Achieving Superior Abrasion-Erosion Resistance for Enhanced Durability

Durability of concrete may be defined as the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties. For most structures a detailed exposure assessment is required, and this can often only be obtained from a site visit, previous experience of the structure and exposure types, and exposure tests.




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Sequentially linear analysis and sawtooth approximation in discreet crack models

Due to new and bold design of buildings, there exists a need for having more realistic simulation tools wich combine high-performance and accuracy, this is critical for many applications in the construction industry. 
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Durability predictions of precast concrete using performance-based testing

There are many misconceptions about the duration of curing concrete, especially when we refer to site conditions. James Mackechnie explores the concept that curing is not essential for precast concrete in moderate enviroments.






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Investigation of aggregate alkali thresholds in mortars incoporating fly ash through AMBT expansion and phase analysis

Alkali-silica reaction (ASR) can cause premature failure of concrete structures and therefore is a major concrete durability issue. The use of commonly available supplementary cementitious materials such as fly ash are regarded as the most economical way to mitigate ASR.




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Seismic pre-qualification and design of fasteners in Australia

Up to date provisions for qualification of products and design for application of fastener are still in progress. In the absence of a recognised Australian Standard for the design and assessment of post-installed fasteners for seismic actions, the industy relies on the Europen standard and the USA standard.




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The Design of the Parramatta Road Ventilation Facility, West Connex, Sydney

Due to the location of the Parramatta Road Ventilation Facility (PRVF), innovative solutions were needed to reduce noise output and ensure the impact on the densely populated community was minimal. To achieve this, a unique shape for the shaft was developed, including three intersecting circular shafts that are each approximately 30m in diameter, to fit on the constrained site at the intersection of Parramatta Road and Wattle Street.



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The behaviour of reinforced crumbed rubber concrete beams under various structural loads

Crumbed Rubber Concrete is made by partially or fully replacing fine aggregate from the conventional concrete mix with similar size crumb rubber particles, usually from scrap tyres, making it a sustainable alternative to normal concrete.




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Mechanical properties of paste and concrete containing slag, seawater and sea sand

The durability of concrete is generally regarded as its ability to resist the effects and influences of the environment, while performing its desired function (Hoff 1991). The chemical deterioration of concrete subjected to seawater has been a topic of interest to concrete researchers in the last few decades, and the findings have revealed some very important facts. More Info

STRUT-AND-TIE: Modeling for Concrete Structures - Part 1

Strut-and-tie modeling is a powerful engineering tool where the engineer stays in control. With a reasonable amount of experience, it can help design engineers provide simple engineering solutions to complex structural problems.




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Innovative connections in prefabricated concrete

Smart & Innovative Connections in Precast Concrete for prefabricated concrete to be competitive it requires load-bearing, adjustable connections that are code compliant and can be installed quickly and efficiently. The presenters give an overview of innovative methods that have been used in recent projects worldwide. 

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STRUT-AND-TIE: Modeling for Concrete Structures - Part 2

Strut-and-tie modeling Part 2 introduces the delegate to Strut & tie analysis & design and Section 7  (STM) of covered in AS3600. 

STM is based on truss analogy and can be applied to many elements of  concrete structures. It is usually adopted to design non-standard elements or parts of elements of concrete structures such as pile caps, corbels, deep beams.


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Universal design in public domain

The importance of good concrete design is not just to make something structurally functional, but to ensure safer and easier access for everyone using the infrastructure provided (paths, traffic medians, bus stops, signs, etc). 

‘Access’ and ‘accessibility’ is largely concerned with fulfilling a set of measurable requirements as prescribed in legislative requirements such as the Building Code of Australia and other relevant standards. Meeting the broad challenges that designers face when providing accessible public spaces for a more inclusive society. 

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Investigation of Alkali Threshold Limits and Blended Aggregate In ASR Risk-Assessed Concrete

The approach to prevent deterioration in concrete due to alkali-silica reaction (ASR) is by the avoidance of any such dissolution reaction taking place in concrete. ASR can in part be prevented by limiting the alkali content and restricting the use of potentially reactive aggregates.

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Features and benefits of entrained pavement concrete using fly ash

The benefits of replacing a proportion of cement with fly ash in concrete mixes have been well understood for many years, particularly in the mitigation of alkali silica reactions. In pavement concrete mixes the properties of fly ash can often play havoc in controlling the amount of air in the concrete which is usually required for both protection against freeze/thaw expansive cycles during winter months as well as aiding slip forming processes.

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Modular Prefabricated Concrete Construction

Australia is recognised as a world leader in modular prefabricated concrete construction when it comes to innovation, design and practice. This seminar will be presented by Dr Shan Kumar, Principle Engineer - Smart Construction advisor - Sheldon Consulting Engineers, who has a wealth of experience in modular precast design and construction.

 



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Concrete Flooring and Pavements - Design and Construction

Slabs and pavements are critical to the serviceability of any facility but constructing them is not as simple as pouring a driveway. Each business has differing loads, vehicles and materials using the surfaces, which means that businesses and designers must consult in advance to ensure the choice of materials, the construction methods and the design itself are fit for purpose and that the surface stands the test of time.

We have two experts in the field who will discuss the vital elements of pavements and flooring to be considered before a project begins.

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Utilizing Petrography to identify deterioration mechanisim in hardend concrete

Petrography is a branch of pertrology that is applied to concrete and concrete raw materials. This technique examines and evaluates the optical properties and microstructural characteristics of the materials. Petrographic analysis for concrete begins by accepting an aggregate for use in concrete (ASTM C295). Concrete petrography is utilized to understand what is occurring within the concrete to account for the type of deterioration observed.

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Mechanical properties of ASR affected concrete: a review

Considering the importance of the Alkali Silica Reaction problem, extensive studies mostly by means of experimental investigations have been carried out to gain understanding on impacts of ASR on the mechanical properties on both plain and reinforced concrete specimens. 

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Waterproofing of Concrete

Well designed, properly constructed reinforced concrete structures are highly durable in most environments, but the integrity of many assets can be impacted by aggressive service environments and severe conditions, which leads to cracking and corrosion of the reinforcing steel which leads to spalling and increased maintenance costs.

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Design of cut and cover tunnels under hydrocarbon fires

The nature of concrete-based structures means that they generally perform very well in fire. Although a lot of information has been gathered on the complex behaviour and resistance of concrete under elevated temperature conditions is, the response to possible fires in concrete structures presents yet greater challenges due to the interactions of the structural elements, and the impact of complex small-scale phenomena at full scale.

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A modern approach to extend the life of concrete assets

A discussion where images of real life repair works will be shown and a Repair Consultant and a Specialist Material Supplier will collaborated in front of a webinar audience to display common pitfalls and reveal best methodologies for achieving not only repair but upgrade of your concrete structures. More Info

Concrete Maturity Testing and Anchor Bracing

The Australian construction industry, driven by the need to develop more efficient and safe methods of construction, evolved the practise of erecting and bracing precast concrete elements on early age low concrete strength suspended floor systems. This method of construction has significantly compressed a multi-level building’s program by at least 1-2 days per floor cycle. AS3850.1:2015 and previous versions, had not addressed the growing trend of early age erection of precast elements, which has been gaining popularity for more than 15 years.

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Guide to historical reinforcement in Australia

Many older buildings and structures need to be assessed for their load carrying capacity as part of upgrade or refurbishment works, or simply to ensure the existing structure is capable of carrying specific loads.

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Toward low carbon concrete

While industries of all kinds are exploring ways to reduce their carbon footprints, the construction industry is among the most significant to join the discussion. Cement is the most widely used man-made material in existence, and is used in the construction of everything from buildings and bridges to roads and sidewalks and all kinds of other infrastructure. Research groups around the world are already tackling many of these issues. 

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WestConnex Rozelle Interchange

The Rozelle Interchange and Western Harbour Tunnel Enabling Works is being designed and constructed by the John Holland CPB Contractors (JHCPB) Joint Venture. The ETAR connects Victoria Road to ANZAC Bridge east bound and allows a tunnel haul road to cross underneath by using a precast concrete Arch system. The Reinforced Earth Company designed and supplied this custom arch solution to JHCPB in April 2020. 

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Grouting of Precast Concrete

The importance of properly grouting load-bearing precast has been demonstrated first-hand by recent failures in Australia. Grout may also be used in the formation of pile foundations, ground anchors, under-reaming, underpinning, in road construction, dam construction, and other applications. The extent of grouting required for a particular area is determined by investigation of ground conditions and calculation of a drilling pattern. This considers the size, spacing and depth of the holes required. The type of grout and the particular ground conditions will influence the spacing of the holes.

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Performance-based specification for geopolymer concrete in chloride environments

Geopolymer Concrete is the result of the reaction of materials containing aluminosilicates such as fly ash and Ground Granulated Blast Furnace Slag with alkalis to produce an inorganic polymer binder. The major barriers to Geopolymer Concrete widespread adoption by the construction industry are concerns about durability and exclusion from current standards.

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Chloride Durability and Future Maintenance of a 40+ Year Marine Structure  

The Newcastle Port assets are located in an aggressive marine environment so the Corporation is acutely aware of corrosion induced deterioration and the need for corrosion management and maintenance approaches to sustain service lives of structural and building assets.

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Concrete Pavements and Footpaths

Footpaths and light pavements are part of everyday life.  Not much thought goes into how much the design and construction effect the usability of this infrastructure.  Trip hazards and cracking can make this experience less than desirable and may end up in injury and litigation.  What are the design and construction tips and tricks to significantly reducing these everyday issues?

 

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Concrete in the Marine Environment

One of the harshest environments that concrete can be used in is the Marine Environment. Concrete can provide a durable and robust solution in this unforgiving setting. This technical seminar will give two different perspectives on the use of concrete for maritime projects from the perspective of the reinforcement corrosion (Robert E. Melchers - Professor of Civil Engineering) and looking at the results of chloride durability test results for different concrete mixes (Jason Chandler – Boral).  More Info

WHAM: a simple and transparent non-linear sectional analysis tool for RC walls and building cores

This webinar will provide an overview of a recently developed analysis program for undertaking a non-linear sectional analysis of reinforced concrete (RC) walls and building cores.

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Mechanical Characteristics of Crumb Rubber Concrete for Practical Applications

Crumb rubber concrete (CRC) is a potentially effective environmental approach to use in the reduction of scrap tyres in landfills around the world. The use of crumb rubber in concrete has been investigated for some years at the laboratory research level. However, there are still concerns about using this class of concrete in practical applications due to its strength deficiencies. 

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Low Carbon Concrete

The world is changing and the concrete industry is finding new ways to adapt. Low carbon concrete has been flouted, but is it realistic? Can it be a true alternative to current practices? And if so, what will this mean for the concrete industry of the future?
 

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Blast and impact loading of concrete: Extreme cases

Explosive breaching is also used by special operations groups as a means to gain entry into a structure where conventional breaching methods are not sufficient or the emergency situation requires immediate entry to save lives.

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R & D Concrete Technologies - The Future of Concrete

“3D Concrete Printing” is a rapidly emerging technology with great promises to promote much-needed automation in construction, allowing “freeform” construction of complex structures without the use of formwork.

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Hybrid Reinforcement for Concrete

Hybrid reinforcement, a combination of traditional concrete reinforcement and steel fibres, is an alternative way to construct heavy raft foundations very efficiently.

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Application of geopolymer concrete for precast application - a review

With the binding characteristics similar to that of OPC concrete, geopolymer concrete could be an innovative substitute for OPC. However, the practical implication of geopolymer concrete has not been found yet. Hence, this project aims at evaluating the structural properties of geopolymer concrete for its use in precast pipes and culverts.

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Why are concrete bridges collapsing?

Accelerated and premature deterioration of most of the structures during the initial few years of its life cycle is of major concern to the asset owners. The premature deterioration has resulted in reduced service life of the reinforced concrete structures. There are different causes of reinforced concrete degradation that have different effects on the life of the structure. The resulting varied problems, if remain unattended, can eventually cause larger disasters such as structural failures.

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Mechanical Properties of Geopolymer Coarse Aggregate Concrete

This webinar presents an evaluation of the mechanical properties of concrete made with manufactured Geopolymer Coarse Aggregate (GPA) over the initial 90 days period from casting. 

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Design Elements for Fibre Reinforced Floors and Vapour Barriers

Over the last 40 years, fibre reinforced concrete has been increasingly used for pavement and ground floor slab construction in Australia to improve construction efficiency and productivity. However, not all these fibre reinforced concrete pavements have performed satisfactory; many have failed soon after construction and/or before reaching the end of their service lives.  More Info

Improving Corrosion Resistance of RC Beams Using Epoxy Treated Chopped Carbon Fibres

Reinforced concrete (RC) has been widely used in the construction field for many years because of its stability, economy, and resiliently in extreme conditions. However, steel bar corrosion arising from contamination of chloride is still regarded as one of the most critical issues affecting the durability and stiffness/strength of RC structures. Recently, an innovative material of carbon fibre has been plemented in concrete structures for improving mechanical performance. 

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Waterproofing performance of deep basements

Embedded retaining walls are a proven method for retention systems to structurally support deep excavations, shafts and/or basements and to form a barrier against the inflow of groundwater. Several factors need to be considered to select the most suitable wall type to comply with the project requirements and specifications. The selection of the retaining wall type offers a direct link to the expected grade of water proofing performance which is the focus of this presentation. More Info

Numerical Study on the Structural Behaviour of a Geopolymer Prestressed Concrete Beam

Geopolymer concrete has superior mechanical properties, such as higher compressive, tensile and flexural strengths than ordinary Portland cement concrete. These enhanced mechanical properties of geopolymer concrete suggest that there could be different structural behaviour and requirements on design criteria for prestressed concrete structures.

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Behaviour of Ultra-High Performance Geopolymer Concrete

In this study, the mechanical properties of a novel high performance alkali-activated geopolymer concrete under both static and dynamic loads were studied. The ground granulated blast-furnace slag powder and silica fume were used to manufacture this geopolymer concrete.

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Innovations in Concrete Repair

Accelerated and premature deterioration of most of the structures during the initial few years of its life cycle is of major concern to the asset owners. The premature deterioration has resulted in reduced service life of the reinforced concrete structures. There are different causes of reinforced concrete degradation that have different effects on the life of the structure. The resulting varied problems, if remain unattended, can eventually cause larger disasters such as structural failures. More Info

Concrete and the Energy Market

Given the move towards greener energy sources, wind farms have grown in popularity over the years with more than 35% of the clean energy in Australia coming from wind generation in 2019 and the Clean Energy Council noting wind power as the cheapest source of large-scale renewable energy. These projects are generally in remote areas and involve the use of mobile batch plants.  More Info

The Design of the Underwood Road Ventilation Facility, WestConnex

The Underwood Road Ventilation Facility (URVF) is located at the western end of the project siting directly above the westbound carriageway and alongside the existing M4 eastbound carriageway. The ventilation structure is 23.8 metres by 15.8 metres in plan and 40 metres high and compromises of six internal shafts. Five of the shafts support fans, damper and attenuator equipment ranging from 15 tonnes to 55 tonnes. The remaining shaft provides access into the mechanical shafts.

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Crack Width Reduction in Conventionally Reinforced Members Using Fibres

During the past 20 years there has been an increased focus on serviceability of concrete structures and this has led to an increased emphasis on crack width control. Changes have consequently been made to AS3600 and other standards, with new sections included to address design crack width estimation both with and without fibres.

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Major Projects - Melbourne's Metro Tunnel Project

Melbourne is experiencing a once-in-a-generation infrastructure boom. Construction is underway on the $11 Billion MetroTunnel which will untangle Melbourne’s city loop so that more trains can run more often across the city. Works to build the massive 9km twin rail tunnels and five new underground stations are also underway. This job employs four tunnel boring machines and utilizes a staggering 56,000 precast concrete segments to line these tunnels. More Info