ABSTRACT
This paper presents the applicability of a chemical kinetics model for the prediction of expansion in concrete due to Alkali-Silica Reaction (ASR). In this study, two types of reactive aggregates: andesite and chart were used in concrete. Firstly, to identify the parameters related to the expansion model, expansion behaviors of laboratory test concrete specimens were simulated with fitting from accelerated expansion tests called AW-CPT (Alkali-wrapped Concrete Prism Test), that avoid alkali leaching and drying. Then, the results by numerical simulation using parameters which obtained from simulation of AW-CPT were compared with the measured value of field exposure concrete blocks for 5 years. The model turned out to demonstrate agreement with the experiment when environmental conditions such as precipitation and temperature were well defined.
