钢纤维增强混凝土性能及微观结构研究  

Study on Performance and Microstructure of Steel Fiber Reinforced Concrete

作　　者：孙雪伟 张万磊 仲建军 岑峰 高培伟[1] 李浩然[1] SUN Xuewei;ZHANG Wanlei;ZHONG Jianjun;CEN Feng;GAO Peiwei;LI Haoran(Nanjing University of Aeronautics and Astronautics,Nanjing 211100,China;Sinoroad Transportation Science and Technology Co.,Ltd.,Nanjing 211808,China)

机构地区：[1]南京航空航天大学,南京211100 [2]中路交科科技股份有限公司,南京211808

出　　处：《路基工程》2023年第2期85-89,共5页Subgrade Engineering

基　　金：国家自然科学基金项目(51908285);江苏省交通运输厅重大专项Z02;江西省交通运输厅科技项目(2020H0047);中铁四局与华设有限公司联合资助项目(22040、KFB21498)。

摘　　要：针对不同体积分数钢纤维掺量,研究其对混凝土试件抗压性能的影响,并结合真空电镜扫描图像,分析钢纤维与水泥基体相互黏结作用机理。结果表明:钢纤维增强混凝土相对普通混凝土具备更为良好的抗压性能,随着钢纤维掺量的增加,对混凝土试样本身产生了促进作用,提高了混凝土的抗压强度。Aimming at the different volume fractions of steel fiber,its effect on the compressive properties of concrete specimens was studied,and the mechanism of mutual bonding between steel fibers and cement matrix was analyzed in combination with vacuum electron microscopy scanning images.The results show that steel fiber-reinforced concrete has better compressive properties than ordinary concrete.And with the increase of fiber volume fraction,it promotes concrete specimen itself and improves the compressive strength of concrete.

关 键 词：钢纤维 混凝土 抗压强度 断裂性能 微观结构 

分 类 号：TU528.572[建筑科学—建筑技术科学]