玄武岩纤维增强混凝土静、动力性能试验研究  

Experimental investigation on the static and dynamic behaviour of basalt fibers reinforced concrete

作　　者：沈刘军[1] 许金余[1] 李为民[1] 范飞林[1] 杨进勇[1] 

机构地区：[1]空军工程大学工程学院,陕西西安710038

出　　处：《混凝土》2008年第4期66-69,共4页Concrete

摘　　要：对纤维体积含量分别为0、0.1%、0.2%、0.3%的玄武岩纤维增强混凝土进行试验,研究了玄武岩纤维体积掺量对混凝土抗压强度、劈裂抗拉强度的影响,并利用φ100 mm的SHPB装置进行了冲击压缩试验,得到了不同应变率下的全过程应力—应变曲线。试验结果表明:混凝土材料具有应变速率敏感性,随着应变率的增加,混凝土的峰值应力增加,发现玄武岩纤维的体积掺量为0.1%时,具有最好的力学性能。The effect of volume fractions on compressive strength and splitting tensile strength of concrete was studied by experiments with Basalt Fibers Reinforced Concrete （BFRC）.The volume ratio of basalt fiber is 0,0.1%,0.2%,0.3% respectively.At the same time,the dynamic compression intention of BFRC under variable strain rate,and the overall-process stress-strain curves were obtained by using the （φl00mm split hopkinson pressure bar device.The results prove the strain rate sensitivity of concrete material, and the peak stress intensity of BFRC is increased when the strain rate improves.BFRC has the best mechanical properties at 0. 1%.

关 键 词：玄武岩纤维增强混凝土 SHPB装置 应力-应变曲线 应变率 

分 类 号：TU528.572[建筑科学—建筑技术科学]