东南大学学报（自然科学版）2012，Vol.42Issue(5)：962-969,8.DOI:10.3969/j.issn.1001-0505.2012.05.030
用碱矿渣胶凝材料粘贴FRP布加固混凝土结构的剪切性能
Interfacial shear performance in FRP strengthened concrete structures using AASCM as adhesive
摘要
Abstract
Since the fire resistance of current epoxy adhesive is poor, a novel alkali-activated slag cementitious material (AASCM) is prepared by using industry byproduct granulated blast furnace slag as raw material and water glass as alkaline activator, which is a fire-resistant inorganic adhesive used for fiber reinforced polymer (FRP) strengthened concrete structures. The influence of modulus and dosage of water glass as well as dosage of water on the compressive strength of samples was investigated and the optimized mix proportion of the AASCM was determined. The optimized modulus of water glass Ms is 1.0, and the quality ratio of water glass to slag is 12% and the quality ratio of water to slag is 42% . Through the in-plane shear tests, the influence of the types of FRP and adhesive on the interfacial shear performance between FRP sheets and concrete substrates was studied. Two types of CFRP effective bond lengths 160 and 220 mm were suggested. The test results indicate that the AASCM shows good effect on strengthening concrete structures with CFRP sheets. The in-plane shear strength of AASCM is comparable to that of organic adhesive. Ideal failure mode, i. e. large area concrete is stripped from the concrete surface, can be found after interfacial failure.关键词
碱矿渣胶凝材料/剪切/浸润性/破坏模式Key words
alkali-activated slag cementitious material/ shear/ wettability/ failure mode分类
建筑与水利引用本文复制引用
朱晶,郑文忠..用碱矿渣胶凝材料粘贴FRP布加固混凝土结构的剪切性能[J].东南大学学报（自然科学版）,2012,42(5):962-969,8.基金项目
国家教育部长江学者奖励计划资助项目(2009-37)、教育部博士点基金资助项目(20092302110046)、黑龙江省自然科学基金资助项目(E200916)、哈尔滨工业大学"985工程"优秀科技创新团队建设资助项目(2011). （2009-37）
