An Experimental Study on the Identification of Alkali-Silica Reactivity of Crushed Stones (1)

국내 쇄석 골재의 알카리-실리카 반응성 판정에 관한 실험적 연구 (1)

The damages due to alkali-aggragate reaction between the reactive silica constituents of the aggregate and the alkalies in cement have been frequently reported since 1923 in America. Recently, alkali-aggregate reaction, especially alkali-silica reaction, can be found all over the area using crushed stones. This research was performed to indentify the alkali-silica reactivity of 18 sets of crushed stones being used currently in domestic reacy-mixed concrete plant as coarse aggregates by petrollogical, chemical and mortar bar method. It is found that all the aggregates used in this study are innocuous at alkali-silica reaction. Further study will be carried out with some aggregates in more severe conditions.