- 皇 民，赵玉如，毕洁同，王 松
2020年第9期
摘要
引用本文
摘 要：设计了5组不同玄武岩纤维体积掺量（0、0.1%、0.2%、0.3%和0.4%）的混凝土试件，并对其进行了冻融循环试验和轴向拉伸试验。结果表明，玄武岩纤维提高了混凝土的轴向拉伸强度，纤维掺量越大，峰值应力越大，峰值应变也相应提高，试件表现出较好的延性破坏特征。冻融循环过程降低了混凝土轴向拉伸强度，而玄武岩纤维可以减弱混凝土的冻融损伤。玄武岩纤维的最佳体积掺量为0.3%。通过对试验数据进行拟合，得到了玄武岩纤维混凝土（BFRC）的轴向拉伸应力-应变本构关系和冻融损伤演化方程，并在此基础上建立了BFRC在冻融环境下的轴向拉伸应力-应变本构模型。
Abstract: Five groups of specimens with different volume fractions of basalt fibers(0, 0.1%, 0.2%, 0.3% and 0.4%) were designed, and the freeze-thaw cycle test and the axial tension test were carried out on the specimens. The test results show that the basalt fiber improves the axial tensile strength of concrete; the higher the fiber content, the higher the peak stress and the peak strain; the specimen shows better ductile failure characteristics. Freeze-thaw cycle reduces the tensile strength of concrete, while basalt fiber can decrease the freeze-thaw damage of specimens. The optimum volume content of basalt fiber is 0.3%. By fitting the experimental datas, the stress-strain constitutive relation and the freeze-thaw damage evolution equation of basalt fiber reinforced concrete(BFRC) are obtained, and on this basis, the stress-strain constitutive model of BFRC under freeze-thaw environment is established.
皇民,赵玉如,毕洁同,等.冻融作用下BFRC轴向拉伸本构模型研究[J].混凝土与水泥制品,2020(9):47-51.
HUANG M,ZHAO Y R,BI J T,et al.Constitutive Analysis About Axial Tension of BFRC Under Freeze-thaw Action[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(9):47-51.
