Abstract
Generally speaking, with regard to mechanical chracteristics of materials, modulus of elasticity is sensitive to variations in the ratio of crystalline and non-crystalline parts in the structure, while strength is comparatively insensitive to such variations. Meanwhile, the progress of alkali-silica reaction can be considered as being the process of the proportion of the non-crystalline part to the crystalline part increasing in ratio in the entire structure of the concrete. By taking advantage of such a property, it can be judged whether or not deterioration due to alkali-silica reaction has progressed in the structure from the results of measurements of compressive strengths and moduli of elasticity of cores taken from concrete members.
