Controversial effect of Silica fume in concrete

Use of silica in concrete is one of the example that something that has been labeled as harmful can become a useful thing if we know its property in details. A branch of scientist are reporting that the Aggregate-Silica Reaction is responsible for deterioration of structure, while another group of researcher are using silica to … Continue reading Controversial effect of Silica fume in concrete

Alkali Silica Reaction (ASR)

The phenomenon of  aggregates reacting with alkali component of cement is called alkali aggregate reaction (AAR). The predominant form of alkali aggregate reaction is alkali- silica reaction (ASR) in which the silica content of aggregate reacts with sodium and potassium hydroxide of concrete. Other forms of AAR are alkali-carbonate reaction and alkali-silicate reaction. In China … Continue reading Alkali Silica Reaction (ASR)