Damage diagnosis of concrete structures: Modified accelerated mortar test for testing the ASR expansion potential

Direct testing of the alkali-silica reactivity that causes damage in concrete generally involves a very time-consuming process, since the concrete specimens have to be stored in a cloud chamber for several months. To abbreviate this test period, a modified accelerated mortar test was developed at the scientific-technical institute WTI Unterwellenborn to determine the ASR potential in the concrete. This new test was calibrated and compared in tests carried out by the method recommended by the DAfStb [1].