钢纤维对轻质混凝土抗折强度影响  

Effect on steel fiber on flexural strength of lightweight concrete

作　　者：张晓东 王中攀 王红梅[2,3] 丛宇婷[2] 金明山 ZHANG Xiao-Dong;WANG Zhong-Pan;WANG Hong-Mei;CONG Yu-Ting;JIN Ming-Shan(Heilongjiang Longye Water Conservancy and Hydropower Engineering Construction Co.,Ltd.,Harbin 150080,China;Heilongjiang University School of Civil Engineering,Harbin 150080,China;Heilongjiang UniversityHeilongjiang Province Village and Town Drinking Water Safety Engineering Technology Research Center,Harbin 150080,China;Heilongjiang Nongken Modern Agricultural Engineering Design Co.,Ltd.,Harbin 150090,China)

机构地区：[1]黑龙江省隆业水利水电工程建设有限公司,哈尔滨150080 [2]黑龙江大学建筑工程学院,哈尔滨150080 [3]黑龙江大学黑龙江省村镇饮水安全工程技术研究中心,哈尔滨150080 [4]黑龙江农垦现代农业工程设计有限公司,哈尔滨150090

出　　处：《黑龙江大学工程学报》2020年第4期20-23,共4页Journal of Engineering of Heilongjiang University

基　　金：冻土工程国家重点实验室开放基金项目(SKLFSE201802,SKLFSE201919);哈尔滨市应用技术研究与开发项目(2017RAXXJ031);黑龙江省大学生创新创业训练计划项目(202010212019)。

摘　　要：钢纤维轻质混凝土具有很好的抗拉强度、抗压强度和抗疲劳强度,研究钢纤维轻质混凝土的抗折强度对于公路、桥梁和机场跑道的建设具有重要的现实意义。试验采用正交试验法,研究钢纤维掺量(0.5%、1.0%和1.5%)、水灰比(0.40、0.45和0.50)和砂率(0.45、0.50和0.55)对粗骨料为浮石的轻质混凝土抗折强度的影响。研究结果发现,当钢纤维掺量为1.5%,控制好水灰比和砂率,轻质混凝土最高的抗折强度为4.07 MPa,是对照组的1.6倍。The steel fiber lightweight concrete has splendid tensile strength,compressive strength and fatigue strength,the study of steel fiber on the lightweight concrete flexural strength of the impact on the construction of roads,bridges and airports’runway has important practical significance.The effects of steel fiber content(0.5%,1.0%and 1.5%),water-cement ratio(0.40,0.45 and 0.50)and sand ratio(0.45,0.50 and 0.55)on the flexural strength of lightweight concrete with pumice aggregate are studied by orthogonal test.The results show that when the content of steel fiber is 1.5%and the water-cement ratio and sand ratio are well controlled,the highest flexural strength of the lightweight concrete is 4.07 MPa,1.6 times that of the control group.

关 键 词：轻质混凝土 钢纤维掺量 正交试验法 砂率 抗折强度 

分 类 号：TU528.2[建筑科学—建筑技术科学]