Alkali-Silica Reaction:

Alkali-Silica Reaction (ASR) belongs to the expansive chemical reactions with the existent chemicals in the concrete mixture.

Lots of Silica exist in the aggregate of concrete, whereas potassium and sodium alkalis exist in cement paste.

The silica of aggregate creates a reaction with potassium and sodium of cement. This reaction leads to an expansion in the concrete as well as forms a network of cracks, spalling of joints, and movement of specific portions of the structure.

The strength of the concrete structure is significantly reduced due to these reactions.