Alkali-Silica Reaction (ASR): 14 Day Expansion Test Results

For questions on ASR data contact the Concrete Engineering Unit

The Office of Materials has tested several concrete aggregate sources for potential alkali-silica reactivity. The 14 day expansion test results are summarized for the years 1995 to 2005. The ASR summary reports are in Adobe (pdf) format and are available in subsets according to District. Click below on the District number of interest. These reports may be viewed with the Adobe Acrobat Reader.
(Click here if you need the Adobe Acrobat Reader)

A earlier version of the data (1995 to 2001) is available in map form at this link.

ASR Reports (12/31/08)

Click on Map for district data or Click here for ASR by Pit

Office of Materials & Road Research  E-mail:  1400 Gervais Avenue  Maplewood, MN 55109-2044  Phone: (651) 366-5592  FAX: (651) 366-5461
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