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Operations Topics	Promotion Topics	Technical Topics	Safety & Environmental Topics

Presented by: Mike Thomas, U. New Brunswick  (BIO)
Time: 3:00 pm EST │ 1.5 hours duration
Pricing: $50 (Members & Non-Members)

Webinar Description:

Damage of concrete structures due to alkali-silica reaction (ASR) has occurred in all regions of the United States. Many specifications now require that aggregates be tested to determine the potential for reactivity and that appropriate preventive measures be taken to minimize the risk of damaging reaction. This Webinar is designed to provide an understanding of ASR, how to test for it and how to prevent it. Topics covered will include:

• What is ASR – causes and symptoms

• Test methods to determine aggregate reactivity

• Methods for preventing ASR in new concrete (e.g. use of supplementary cementing materials, low-alkali cement, lithium admixtures) and how to test the prevention

• Guidelines and specifications for avoiding ASR

• What can be done for existing ASR-affected structures

This webinar is intended for concrete producers, contractors, owners, and engineers.

Presenter Bio:

Michael Thomas (Ph.D., P.Eng.) is a Professor in the Department of Civil Engineering at the University of New Brunswick (UNB) and a registered Professional Engineer in the province of New Brunswick.

He has been working in the field of cement and concrete research since 1983.

Prior to joining UNB in 2002 he had been on faculty at the University of Toronto since 1994 and previous to this he worked as concrete materials engineer with Ontario Hydro in Canada and as a research fellow with the Building Research Establishment in the UK.
 

Dr. Thomas’s main research interests are concrete durability and the use of industrial by-products including pozzolans and slag. His studies on durability have included alkali-silica reaction, delayed ettringite formation, sulfate attack, deicer-salt scaling, carbonation, chloride ingress and embedded steel corrosion. He is also active in the area of service-life modeling, and in the repair and maintenance of concrete structures. He has authored more than 100 technical papers and reports on these subjects, and is a co-author of the service-life model, Life-365.

Dr. Thomas is active on technical committees within the American Concrete Institute (ACI), ASTM, RILEM, and the Canadian Standards Association. He was a recipient of the ACI’s Wason Medal for Materials Research in 1997, the ACI Construction Practice Award in 2001 and was elected to a Fellow of the Institute in 2006.

Dr. Thomas is also the President of C&CS Atlantic Inc. and provides consulting services in the area of concrete materials, performance, rehabilitation and litigation. In 2005, Dr. Thomas and his colleague Dr. Kevin Folliard of the University of Texas in Austin formed School of Concrete Inc. to provide training courses, educational seminars and workshops for industry, government and academia.
 

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