掺锂渣再生粗骨料混凝土受弯梁短期刚度研究  

Short-time stiffness test of bending beam of recycled coarse aggregate concrete mixed with lithium slag

作　　者：侯勇辉 秦拥军[1] 郭泽思 严文龙[1] 

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830047

出　　处：《中国科技论文》2017年第1期51-56,共6页China Sciencepaper

基　　金：国家自然科学基金资助项目(51668061);新疆维吾尔自治区自然科学基金资助项目(2012211A005)

摘　　要：对掺锂渣再生粗骨料混凝土受弯梁进行试验,观察其破坏形态,研究再生粗骨料取代率和锂渣掺量对挠度和曲率的影响,探究挠度和曲率的关系。结果表明:试验梁破坏形态与普通混凝土梁相似,锂渣和再生粗骨料的掺入,在一定程度上减小了挠度和曲率;试验梁挠度和曲率关系仍满足现行普通混凝土规范的规定,并通过数据分析,建议适合该试验梁的短期刚度计算公式。Based on the test results of 9 recycled aggregate concrete bending beam mixed with lithium slag, its failure form was observed and the relationship between deflection and curvature was explored. Factors, such as the replacement rate of recycled coarse aggregate, the lithium slag content, were evaluated for their effects on deflection and curvature. The results showed that the test beam failure pattern were similar to ordinary concrete beam. Meanwhile, the lithium slag and recycled coarse aggregate added into the concrete decreased the deflection and curvature. The test beam deflection and curvature relationship still met the current common concrete specification, By the analysis of test data, the formulas of short-time stiffness of recycled aggregate con-crete beam mixed with lithium slag were recommended.

关 键 词：锂渣 再生粗骨料 混凝土 受弯梁 挠度 曲率 短期刚度 

分 类 号：TU37[建筑科学—结构工程]