Federal Highway Officials Update Online ASR Reference Center

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The Federal Highway Administration (FHWA) maintains an online reference center on alkali-silica reactivity (ASR) developed under the FHWA ASR Development and Deployment Program. This online resource has been updated to provide engineers and practitioners with the most current and pertinent information related to ASR in an easily accessible format. There are currently over 300 references posted to the reference center, spanning a large variety of subject areas, including ASR mechanisms, test methods, laboratory research, and detection and mitigation strategies.

The reference center also contains a large number of case studies from around the world, including select field trial summaries that document ASR treatment methods, test results and treatment efficacy. In addition, an extensive collection of state Department of Transportations' (DOT) specifications related to ASR has been compiled; as more states adopt measures to address ASR, the reference center will be updated accordingly.

Additional specifications, guidance documents and test methods published by international agencies committed to raising ASR awareness, such as the Canadian Standards Association (CSA) and the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM, from the name in French), have been included as well. Issues of a quarterly newsletter Reactive Solutions, published by the Transtec Group, are also posted on this Web site.

Click here to access the ASR Reference Center.