A Experimental Study on the Alkali-Silica Reaction of Crushed Stones (Part 1 : The Identification of Reactive Aggregate and the Influence of Aggregate Content to the Alkali-Silica Reaction)

쇄석 골재의 알칼리-실리카 반응에 관한 실험적 연구(제 1보 : 반응성골재의 판정과 골재혼입율이 알칼리-실리카 반응에 미치는 영향)

The Alkali Aggregate Reaction(AAR), reported first by T. E. Stanton in 1940, is a reaction between certain siliceous aggregate and hydroxyl ions present in the pore fluid of a concrete. The damage of concrete structures, deteriorated by AAR, have been reported since using the crushed stones caused by the exhaustion of natural aggregates. This study was performed to investigate the AAR of crushed stones using chemical analysis, polarization microscope, XRD, chemical method(KS F 2545, ASTM C 289), mortar bar method(KS F 2546, ASTM C 227) and Scanning Electron Microscope(SEM) and Energy Dispersive X-ray Analysis (EDXA) of reaction products by AAR in mortar bar.