- 皇 民，趙玉如，畢潔同，王 松
2020年第9期
摘要
引用本文
摘 ? 要：設計了5組不同玄武巖纖維體積摻量（0、0.1%、0.2%、0.3%和0.4%）的混凝土試件，并對其進行了凍融循環試驗和軸向拉伸試驗。結果表明，玄武巖纖維提高了混凝土的軸向拉伸強度，纖維摻量越大，峰值應力越大，峰值應變也相應提高，試件表現出較好的延性破壞特征。凍融循環過程降低了混凝土軸向拉伸強度，而玄武巖纖維可以減弱混凝土的凍融損傷。玄武巖纖維的最佳體積摻量為0.3%。通過對試驗數據進行擬合，得到了玄武巖纖維混凝土（BFRC）的軸向拉伸應力-應變本構關系和凍融損傷演化方程，并在此基礎上建立了BFRC在凍融環境下的軸向拉伸應力-應變本構模型。
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,趙玉如,畢潔同,等.凍融作用下BFRC軸向拉伸本構模型研究[J].混凝土與水泥制品,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.
