Concrete in the Marine Environment

Thank you for your interest in this webinar. Unfortunately, it has closed for registration. However, it will be available on demand in the near future. Please keep an eye out for this on our website or contact the Concrete Institute of Australia at [email protected] for more detail.

EVENT SPONSORS

event image

When

Thursday, 25 June 2020
2:00 PM - 3:00 PM

Where

WEBINAR W
Zoom Webinar , Online, WA CIA

Overview

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).

 

Lessons learned when using concrete in a marine location can be applicable to all uses of concrete, especially where emphasis is on the long term performance of the concrete structure.

Prices

CIA Members $33.00 CIA Student Members $22.00 CIA Retired Members $22.00 Non Members $55.00

Presenters

Mr. Jason Chandler
Project Manager - Boral Concrete NSW

Professor Robert Melchers
Professor of Civil Engineering - The University of Newcastle

Topics

Professor Robert E. Melchers
Professor of Civil Engineering, The University of Newcastle,
 
New perspectives for the understanding of reinforcement corrosion in marine concrete structures.  
 
Professor Melchers, Professor of Civil Engineering, The University of Newcastle, Australia, PhD (University of Cambridge, UK), Fellow, Australian Academy of Technology and Engineering, Honorary Fellow, The Institution of Engineers Australia.  Professor Melchers was the founding editor of the Australian Journal of Structural Engineering. He was also a founding Principal of AMOG Consulting Pty Ltd in 1991, which now has offices in Melbourne, Sydney, Adelaide, Perth and Houston.
 
Professor Melchers' research into structural reliability and corrosion modelling of steel and concrete structures has won him many international awards and invitations to contribute to international research projects. In 2013 he was awarded the Engineers Australia John Connell Medal, he has received two five-year Australian Professorial Fellowships from the Australian Research Council, has published four books, over 200 refereed journal papers and numerous conference papers and reports.
 
Awards include 2009 ACA Corrosion Medal, 2012 Jin S Chung Award (ISOPE), 2013 John Connell Gold Medal (The Institution of Engineers, Australia), 2014 Eminent Speaker, Structural College, The Institution of Engineers, Australia, 2018 Guy Bengough Award (IOM3).   
 
Existing theory and models do not well-predict the onset of chloride-induced reinforcement corrosion compared with observations and practical experience for actual concrete structures. Very high levels of chlorides may initiate some reinforcement corrosion in more permeable concretes, but then declines depending on the rate of oxygen availability. For high quality, low permeability concretes the early corrosion usually stops or becomes very slow. For such concretes serious corrosion does not commence until there is extensive loss of concrete calcium hydroxide through leaching to the environment. This is accelerated by the presence of chlorides. Evidence from actual concrete structures shows that this is a very slow process, with little loss even after 75-85 years. The reasons for this are described. The observations and inferences are considered to require a re-appraisal of conventional ideas and concepts associated with ‘chloride-induced’ reinforcement corrosion.  
 
 
Jason Chandler, Project Manager
Boral Concrete NSW
 
Performance of Concrete Mixes by Chloride Durability Test Methods, and Assessment of Factors Contributing to Concrete's Resistance to Chloride Ingress   
 
Jason is currently a project manager for Boral Concrete.  Previously he has worked in Boral's NSW Technical department and in that time developed an interest in concrete sustainability and durability.  From this interest he was instrumental in the development and commercialisation of Boral's low carbon, low shrink, high durability ENVISIA concrete and has presented papers at the last two CIA bi-annual conferences.
 
This webinar will look at actual chloride durability test results of various concrete mixes when assessed by a number of different recognised chloride durability test methods.  There will be some discussion around limitations of the test methods in highly durable concrete, possible modifications to those methods and a review of factors affecting concrete's ability to withstand ingress of chlorides.  Boral has embarked on a multi-year program of trials with both conventional and improved cementitious materials and this webinar will include some of the findings from these trials.

 

Program

The webinar will run from 2.00 - 3.00pm and is based on NSW time (Australian Eastern Standard Time). Delegates will be sent login details and a password for this webinar prior to the event by email.

Times for all States:

NSW/VIC/QLD/TAS/ACT  2.00pm to 3.00pm
SA/NT 1.30pm to 2.30pm
WA 12.00pm to 1.00pm

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.

By making a booking you are acknowledging that you have read and accept the Concrete Institute of Australia’s
Terms of Service.