ABSTRACT

Recently, it was reported that seismically detailed beam-column joint suffered from joint damage during earthquake. Performance of geopolymer as repair material for seismically detailed beam-column joint following removal and replacement technique under cyclic loading is yet to be explored. Experimental program was carried out to examine suitability of geopolymer mortar (GM) and steel fiber reinforced geopolymer mortar (GMSF) to rehabilitate seismically detailed beam-column joint under cyclic loading. It was observed that GM failed to restore cyclic performance of rehabilitated specimens, whereas specimens rehabilitated with GMSF showed better performance in terms of stiffness degradation, ductility, energy dissipation, and damage index.

摘要

最近，据报道地震详细的梁柱节点在地震中遭受节点损坏。地质聚合物作为地震详细梁柱接头在循环载荷下拆除和更换技术后的修复材料的性能尚待探索。开展了实验计划，以检验地质聚合物砂浆 (GM) 和钢纤维增强地质聚合物砂浆 (GMSF) 在循环荷载下修复抗震详细梁柱节点的适用性。据观察，GM 未能恢复修复标本的循环性能，而用 GMSF 修复的标本在刚度退化、延展性、能量耗散和损伤指数方面表现出更好的性能。