Research progress on calculation method of Alkali-Silica Reaction( ASR) process of concrete
This paper describes the progress of simulation research on the Alkali-Silica Reaction ( ASR) process in concrete. It first summarizes the current research status of ASR computational models, then explores the optimal models in ASR computational models, and finally proposes suggestions for the problems existing in existing ASR computational models. The computational models of ASR mainly include theoretical model, mesoscopic model, macroscopic model and macro mesoscopic ladder model. The theoretical model can predict mortar expansion under specific aggregate type and particle size conditions, but it is not suitable for concrete structure. A-mong them, the theoretical model of bivalent ion concentration has the highest simulation accuracy;the mesoscopic model can describe the distribution of mesoscopic cracks in concrete under the action of ASR, but the modeling is relatively complex. Among them, the lattice discrete particle model has the highest simulation accuracy;macroscopic models can describe the damage zone and damage dis-placement of concrete by ASR, but most of them ignore the creep effect of concrete. The simulation accuracy of macroscopic creep model is the highest;the macro mesoscopic ladder model is a comprehensive ASR computing model, but the research is less. On this respect, further researches are needed.
concreteAlkali-Silica Reactionsimulation studycomputational modeloptimal model
万方数据
维普
