摘要
对粗骨料后掺率分别为0、10%、20%、25%、30%5种混凝土柱试件进行了小偏心受压试验,分析了各后掺骨料混凝土柱的极限承载力、构件的延性、混凝土及钢筋应变等基本性能。研究表明:后掺骨料混凝土柱试件的极限承载力比普通混凝土柱试件有所提升,后掺率为10%的混凝土柱试件延性最好,后掺率为20%的混凝土柱试件的延性与普通混凝土柱相近。综合来说,后掺率为20%时,混凝土柱具有较好的受力性能及工作性能。
Small eccentric compression tests are carried out for five kinds of scattering-filling coarse aggregate concrete columns to analyze the ultimate bearing capacity, component ductility, concrete strain and reinforcement strain, where the ratios of the replacement of five kinds of specimens are 0%, 10%, 20%, 25% and 30% respectively. The results show that the ultimate bearing capacity of scattering-filling coarse aggregate concrete specimens is higher than that of ordinary concrete specimen, the ductility of specimen when the replacement rate is 10% is the best and the ductility of specimen with a coarse aggregate replacement rate of 20% is similar to that of ordinary concrete specimen, In summary, when the replacement rate is 20%, the concrete column has good mechanical properties and working performance.
作者
贾金青
叶浩
周佳玉
李璐
JIA Jinqing, YE Hao, ZHOU Jiayu, LI Lu(State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, Chin)
出处
《水力发电》
北大核心
2018年第4期109-111,115,共4页
Water Power
基金
国家自然科学基金项目(51678112)
关键词
后掺粗骨料
小偏心受压
极限承载力
延性
泵送混凝土
scattering-filling coarse aggregate
small eccentric compression
ultimate bearing capacity
ductility
pumping concrete
