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Workshops and webinars were conducted in 2012 and 2013 to transfer the deliverables of the ASR Development and Deployment Program. The goal was to provide State Department of Transportation (DOT) engineers and practitioners with the information and tools necessary to address ASR in their states.


The main objectives for the workshops and webinars were to:

  • Review the fundamentals of alkali-aggregate reaction (e.g. alkali-silica reaction, ASR, versus alkali-carbonate reaction, ACR)
  • Summarize available methods of preventing or mitigating ASR-induced damage in newly-constructed and existing concrete structures.
  • Discuss and recommend test methods and specifications related to AAR.
  • Provide case studies of AAR-affected concrete structures, including rehabilitation strategies.


The following topics were covered during the 1-day workshops:

Workshops Locations and Dates

Face to face workshops were conducted on the following dates and locations:

  • Nov. 19, 2012 in Raleigh, NC
  • Nov. 29, 2012 in Nashville, TN
  • Jan. 17, 2013 in Washington, DC (Transportation Research Board Meeting)
  • March 4, 2013 in Phoenix, AZ
  • March 6, 2013 in Salt Lake City, UT
  • May 17, 2013 in Harrisburg, PA


The same information was presented during three consecutive webinars (Part I, II, & III) in February of 2013. Below are links to access the recordings and PowerPoint Presentations for the 2-hour training events:

Reference Materials

Below is a link to download the Reference Manual for the workshops, a document to supplement the workshop/webinar presentations and elaborate on the following areas: chemistry of ASR mechanism, aggregate test procedures, preventive measures, diagnosis and prognosis of ASR, and management actions (monitoring and repair) of ASR-affected concrete structures.

Some other relevant publications and guidance developed under the FHWA ASR Development and Deployment Program include:

The online FHWA ASR Reference Center includes research reports, guidance documents, specifications related to ASR, field trials reports, and other helpful links. The ASR Reference Center can be accessed at: https://www.fhwa.dot.gov/pavement/concrete/asr/reference.cfm

To request hard copies of reports contact Gina Ahlstrom.

Updated: 01/25/2018
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