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

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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)