Mitigation of ASR in Concrete - Combined Materials Test Procedure

Project Description

Alkali-silica reactivity (ASR) is a deleterious chemical reaction associated with alkalis (sodium and potassium) present in cement or other sources and certain siliceous components that are soluble in high pH and combine with calcium and sodium/potassium to produce a gel. When this alkali-silica gel absorbs moisture, it has the potential to swell and eventually produces cracks in aggregate particles as well as in the cement paste. This research project is developing a new testing protocol that has a performance-based approach to explain combined material properties associated with field performance.

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