Concrete RepairMarch 25, 2026by Growth Friday
What Is Alkali Silica Reaction in Concrete? Causes, Symptoms, and Structural Risks
Alkali silica reaction is a specific type of alkali aggregate reaction (AAR), which is a deleterious internal swelling reaction that occurs in concrete between highly alkaline cement paste and reactive amorphous silica found in many common aggregates. This guide explains what alkali silica reaction is, what causes it, the symptoms to watch for, the structural risks involved, and the repair options available when damage begins to appear.
