活性粉末混凝土单轴循环压缩试验条件下力学特性研究  

Mechanical Properties Research of Reactive Powder Concrete under Uniaxial Circulating Compression Experiment Conditions

作　　者：王晓飞[1,2] WANG Xiao-fei(College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China;School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院 [2]北京交通大学土木建筑工程学院

出　　处：《硅酸盐通报》2019年第7期2321-2328,共8页Bulletin of the Chinese Ceramic Society

摘　　要：通过对3种钢纤维体积含量(0%、2%、4%)活性粉末混凝土在较长龄期(3年)进行单轴循环及常规单轴压缩试验,得到其在对应加载制度下轴向及径向应力应变全曲线数据。比较分析了3种钢纤维体积含量活性粉末混凝土在两种加载制度下峰值强度、轴向峰值应变、弹性模量、泊松比、破坏模式及轴应力体应变曲线的异同,并对RPC基本力学性能随钢纤维体积含量增加的变化规律进行了定量分析。结果显示:峰值强度、轴向峰值应变、弹性模量、泊松比、破坏模式只与钢纤维体积含量有关,与加载制度无关;活性粉末混凝土峰值强度、轴向峰值应变、泊松比随钢纤维体积含量的增加而增大;对3种钢纤维体积含量活性粉末混凝土在单轴循环压缩试验条件下的滞回性能也进行了详细分析。By the test of uniaxial circulating compression and convention uniaxial compression about three kinds of reactive powder concretes with steel fiber volume contents of 0%,2%and 4%,obtained the axial direction and radial direction stress strain curves data of the three kinds of reactive powder concretes under the two loading systems,made a comparative analysis on the effects of loading systems(uniaxial circulating compression and conventional uniaxial compression)and steel fiber volume contents on peak strength,axial peak strain,elastic modulus,poisson ratio and failure modes.The results show that peak strength,axial peak strain,elastic modulus,poisson ratio and failure modes of the three kinds RPC only has the relationship with steel fiber volume content,has little relationship with the two loading systems mentioned.Peak strength,axial peak strain,poisson ratio increases with the increasing of steel fiber volume contents.Onhysteretic behavior of the three kinds of reactive powder concrete were analyzed detailed.

关 键 词：活性粉末混凝土 钢纤维 单轴循环 力学行为 滞回性能 体应变 

分 类 号：TU528.572[建筑科学—建筑技术科学]