Bonding behaviour in ASR affected concrete

Alkali Silica Reaction (ASR) has been found to deteriorate the bond between steel and concrete. This article will discuss if this is true. The early study regarding effect of ASR on the bond strength was done by Chana (1989) in Britain from Transport and Road Research Laboratory. The experiment was extensive. The Na2eq was taken … Continue reading Bonding behaviour in ASR affected concrete

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)