聚丙烯纤维和硅灰对轻骨料混凝土性能的影响  

Effect of polypropylene fiber and silica fume on the performance of lightweight aggregate concrete

作　　者：赵诗语 苏有文[1] 张文星 杨钦淞 ZHAO Shiyu;SU Youwen;ZHANG Wenxing;YANG Qinsong(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621000,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621000

出　　处：《混凝土与水泥制品》2024年第8期57-61,共5页China Concrete and Cement Products

摘　　要：研究了聚丙烯纤维(PF)掺量(0、0.2、0.4、0.6、0.8、1.0、1.2 kg/m^(3))与硅灰掺量(0、1%、2%、3%、4%、5%、6%、7%、8%)对轻骨料混凝土(LAC)抗压、抗折强度和抗冻性能的影响。结果表明:同时掺入适量的PF和硅灰有效提高了LAC的抗压、抗折强度,其中,对于抗压强度,最佳PF和硅灰的掺量分别为0.8 kg/m^(3)和5%;对于抗折强度,最佳PF和硅灰的掺量分别为1.0 kg/m^(3)和5%;当PF和硅灰的掺量分别为1.0 kg/m^(3)和5%时,LAC试件的抗冻性能相对最优。The effects of polypropylene fiber(PF)content(0,0.2,0.4,0.6,0.8,1.0,1.2 kg/m^(3))and silica fume content(0,1%,2%,3%,4%,5%,6%,7%,8%)on the compressive and flexural strengths and frost resistance of lightweight aggregate concrete(LAC)were investigated.The results show that the compressive and flexural strengths of LAC are effectively improved by the simultaneous addition of appropriate contents of PF and silica fume.For compressive strength,the optimum PF and silica fume contents are 0.8 kg/m^(3) and 5%,respectively.For flexural strength,the optimum PF and silica fume contents are 1.0 kg/m^(3) and 5%,respectively.The frost resistance of LAC specimens is relatively optimal when the contents of PF and silica fume are 1.0 kg/m^(3) and 5%,respectively.

关 键 词：轻骨料混凝土 聚丙烯纤维 硅灰 力学性能 抗冻性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]