Alkali aggregate reactions in concrete: a review of the Ethiopian situation

Abstract

The reaction of aggregates with alkalis in the cement to produce alkali silica reaction and alkali carbonate reaction is reviewed. The effects of the two reactions on the durability of concrete structures are highlighted. By taking samples of aggregates and cement test results, the potential of alkali silica reaction in Ethiopia is preliminarily assessed. Finally a _ set of' conclusions and recommendations are forwarded

Keywords: Alkali silica reaction; Alkali carbonate reaction; Cement; Concrete; Durability; Moisture; Sand;