Fundamental Study of Crack Propagation of External Sulfate Attack with Mesoscale Analysis System for Coupled Chemo-Mechanical Behaviours

In this study, three dimensional numerical analysis systems, which can consider the change in physico-chemical property and expansive strain due to external sulfate attack, was constructed in order to evaluate the process of expansion cracking behavior.This analysis was coupled with cement hydration model, sulfate attack analysis and Rigid Body Spring Model.In this paper, this analysis was conducted to evaluate the expansive crack propagation in association with cement source and mix proportion.As results, it was confirmed that this analysis can describe signature expansion cracking behavior.