Back to Basics - How raw material properties can impact concrete performance

For details on upcoming Concrete Institute of Australia events, please see the CIA website:  www.concreteinstitute.com.au  or contact the Queensland Branch Office on (07) 3227 5208 or [email protected].

Event Sponsor

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When

Thursday, 27 September 2018
5:00 PM - 8:30 PM

Where

Griffith University Gold Coast Campus
Parklands Drive, Room G42-2.17, Southport Qld 4215

Overview

Although concrete can be a relatively simple material to both design and produce, the properties of its primary constituent materials - that is, cement and SCM’s, aggregates and admixtures - can have a massive impact on the performance of a concrete mix, both in the plastic and/or the hardened states. The seminar will draw on the experiences of 3 eminent speakers from the raw materials supply industry who will explain how each of the 3 constituent materials can affect critical concrete performances. 
 
Aspects such as the impact of cement fineness on setting times, the effect of an optimised overall aggregate grading on pumpability and the benefits of minute bubbles of air on workability will all be explained in detail - along with many other key aspects. 
 
The seminar will have a strong focus on technology and will aim to provide the audience with an opportunity to go "back to basics" in terms of concrete technology and will be of benefit to both seasoned practitioners as well as newcomers to the world of concrete technology who want to understand the root causes of why concrete behaves the way it does.

Prices

CIA Members $75.00 CIA Student Members $20.00 CIA Retired Members $20.00 Non-members $98.00

Presenters

Bruce Perry
Cement Australia Pty Ltd

Bruno D'Souza
BASF

Paul Rocker
Lafarge Holcim

Topics

The properties of cement and SCM's and how they impact concrete performance
Bruce Perry, Cement Australia
Portland Cement was invented by Joseph Aspdin way back in 1824 and although not much has changed in the way of its composition, modern General Purpose cements are now manufactured in very efficient and complex facilities where QC and QA systems are highly evolved.  The properties of cements can, however, be controlled to impact the way that concrete behaves.  Aspects such as fineness will affect both shrinkage and ultimate strength. The addition of gypsum during the milling of clinker can also control the setting characteristics of concrete - including undesirable false and flash setting. The ratio of the different silicates in clinker give rise to different strength gain characteristics.  All of the above - and much more - will be discussed in detail.
 
Supplementary Cementitious Materials (SCM's) are now a key part of a modern concrete mix design but their properties can have a massive influence on how concrete behaves. Although fly ash is the predominant SCM in North Qld., the use of binary slag binders are soon to be permitted in MRTS70. The presentation will cover the key differences between fly ash & slag in both the plastic and hardened concrete states.

Concrete Admixtures: Basics and advances in technology
Bruno D'Souza, Business Development Manager - BASF 
Admixtures provide certain beneficial effects to concrete, including reduced water demand, increased workability, controlled setting and hardening, improved strength and better durability.
Proper selection of admixtures however, is necessary to achieve the desired fresh and hardened properties of concrete. One needs to carefully evaluate not only factors such as the compatibility of the admixture combination but also their interaction with other ingredients in a mix design.
It is therefore important to understand the mode of action and effects of both, conventional admixtures and those based on advanced and new technologies.

Managing the Concrete Plant – raw materials, quality control, plant & equipment, batching concrete.  What could go wrong?
Paul Rocker, National Functional Manager – Concrete & Aggregates, Lafarge Holcim
Concrete Batching, managing materials at the concrete plant, Quality Control and getting that truck ‘out the gate’ to the project site is the next milestone in managing plastic concrete. Lafarge Holcim will take us on a virtual tour of a concrete plant and visit the complexities of controlling the quality of the batched concrete, from the receipt of raw materials to batching the concrete and finally, slumping the concrete load in the truck before travelling to the job site.
 

Program

5.00 pm Registration Commences
 
5.30 pm Welcome & Introduction
 
5.35 pm Commencement of Speaker Presentations
 
7.05 pm Question time to panel of Speakers
 
7.30 pm Networking & Student Project Posters
(Griffith Concrete Club)
 Light refreshments served after conclusion of event
8.30 pm Seminar closes
 

Parking available see attached Griffith University Parking Map.  Further details re parking can be found on the Griffith University Website.

Communication Devices

 
Please note that audio and video recording or taking photographs is prohibited during this event without express approval from the Concrete Institute of Australia.

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