集料粒径与ASR膨胀关系及膨胀预测研究进展

Effect of Aggregate Size on ASR Expansion and Progress of Its Prediction Model

综述了集料粒径与碱硅酸反应(ASR)膨胀关系的研究现状,指出了ASR膨胀研究存在的局限性,阐述了大粒径、多级配集料ASR膨胀规律研究的必要性。介绍了几种ASR膨胀机理及ASR膨胀预测模型,并指出基于碱硅酸反应活化能的测定预测ASR膨胀将可能成为今后研究的一个热点。

New research achievements in the effect of aggregate size on alkali-silica reaction（ASR） expansion are reviewed.The limitations and existing problems are pointed out and the necessity of further studies on the relationship between large size and multi-grade aggregates and ASR induced expansion is stated.Several ASR expansion mechanisms and the prediction models are introduced.It is pointed out that the ASR expansion prediction based on the activation energy of alkali-silica reaction may be a next focus in the future.