Alkali-silica reactivity (ASR) is a chemical reaction that occurs between the reactive silica in aggregates used to make concrete and the alkalis (sodium or potassium) present in the concrete mix. The reaction causes the formation of a gel that absorbs water and swells, exerting internal pressure that can lead to cracking and premature deterioration of the concrete. The deterioration weakens the matrix so the concrete can be further damaged by traffic loading, vibrations and environmental stresses such as freeze-thaw cycles or steel corrosion. Learn more about ASR, the best way to avoid ASR in new concrete and how to deal with ASR in existing concrete.
FMC Lithium Products Mitigate ASR