アルカリシリカ反応の膨張メカニズムに関する研究

Abstract

This paper describes expansion mechanism of the Alkali silica reaction (ASR). The reaction product is made of the reactive mineral (SiO2) and alkali (Na+, K+, OH-). It is known that the expansion of ASR changes by silica alkali ratio (SiO2/Na2O) of the reaction product. It is not easy to investigate the property of the reaction product made by using rock aggregate. In the experiment, water glass cullet is used instead of the reaction product which is created by ASR of the reactive rock aggregate. As a result, expansion of mortar mixing water glass cullet of silica alkali ratio (SiO2/Na2O) 3.6 became high, and expansion of mortar mixing water glass cullet including large amount of Al2O3 became low.