Estimation of the Residual Expansion of Concrete Affected by Alkali Silica Reaction

Abstract

An experimental research program was carried out in order to validate a methodology for the mechanical assessment of structures damaged by alkali-silica reaction (ASR). Long-term deformations of specimens kept under varied environments were measured. Results were collected according to the French methodology for measuring residual expansion, on cores drilled from cylinders and prisms made of the same concrete materials. Numerous testing conditions were intended to check the experimental robustness of the most significant input data for structural assessment. It appears that omitting the measured expansion of the specimens during a rather long period