Alkali-Silica reaction has been identified as one of main causes for premature deterioration of concrete structures, and many papers have been published dealing with various aspects of the mechanism and effects. However, a comprehension method to predict the extent of reaction and the ensuring damage has not yet been established. In this paper, an attempt has been made to present a new model based on kinetics to predict the extent of reaction between reactive aggregate and the surrounding cement matrix. The model also incorporates the affect of diverse factors such as size and reactivity of aggregate, alkalinity of cement matrix, etc. It was found that the results obtained from the simple chemical test (ASTM C 289) can be explained on the basis of the model proposed here.
