Controlling Alkali Silica Reaction in Concrete

Thank you for your interest in this webinar. We look forward to you registering. Please feel free to contact the Concrete Institute of Australia on 02 9955 1744 or email
 for more detail.


Thursday, 8 October 2020
2:00 PM - 3:30 PM


Webinar , Online CIA


Alkali-silica reaction (ASR) is when aggregates containing silica react with alkali hydroxide in concrete to form a gel that swells with water from the surrounding cement paste or the environment. This can then cause enough pressure that the concrete becomes damaged. ASR is typically indicated by random map cracking and, in advanced cases, closed joints and attendant spalled concrete.
Why is it important for designers and specifiers to know about ASR – there are materials used in concrete that can help reduce the risk of ASR occurring; certain structure types, requirements and areas that can increase the risk of ASR, and new testing methodology available to predict the level of risk!

This webinar will be presented by Peter Clarke, recently retired Chair of the Australian Standard (AS) Committee CE-012 Aggregates & Rock for Engineering Purposes. Peter has a wealth of experience in this field and was instrumental in developing two new AS test methods for assessing the potential alkali-silica reactivity of aggregates in 2014: AS1141.60.1 and AS1141.60.2. Peter also led a team revising and updating HB79 Guidelines on minimising the risk of damage to concrete structures in Australia which was published in 2015.  


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


Mr. Peter Clark
Past Chair, CE-012 Aggregates & Rocks for Engineering Purposes


Our presenter, Peter Clark, will cover three main topics in his presentation:
  • What are the challneges in the future for engineers to understand to control ASR
  • Current research with respect to old information ASR and how it can be applied today
  • Recommendations for updates to Standards for testing and specification of aggregates with respect to ASR
This webinar is applicable to all concrete designers and specifiers to undertsnad the impact of ASR on concrete structures and what can be done to mitigate the issue.


The webinar will run from 2.00pm to approx. 3.00pm and is based on NSW time (Australian Eastern Daylight Saving Time).

Delegates will be emailed login details and a password for this webinar 24 hours prior to the event.

Times for all States:

NSW/VIC/TAS/ACT 2.00pm to 3.00pm (AEDST)
SA 1.30pm to 2.30pm
QLD 1.00pm to 2.00pm
NT 12.30pm to 1.30pm
WA  11.00am to 12.00pm

Communication Devices

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