钢纤维混凝土的拉压比试验

发布时间：2018-03-06 10:52

本文选题：钢纤维　切入点：拉压比　出处：《江苏大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：考虑钢纤维体积率、混凝土基体强度和钢纤维类型等参数,采用标准试件150 mm×150 mm×150 mm的立方体进行抗压和劈裂抗拉试验,分析各因素对混凝土拉压比的影响.结果表明:钢纤维能提高混凝土立方体抗压强度和劈拉强度,显著改善混凝土受压和受拉破坏形态,使其保持良好的整体性;钢纤维的加入能提高混凝土的拉压比,且拉压比随钢纤维体积率的增加而逐渐加大,增幅最大达到27.4%;钢纤维混凝土的拉压比随基体强度提高而减小,但对比素混凝土降幅明显减小;波纹形钢纤维和端钩形钢纤维均能提高混凝土的拉压比,波纹形钢纤维优于端钩形钢纤维,而螺纹形钢纤维最差,降低了混凝土的拉压比.
[Abstract]:Considering the steel fiber volume ratio, concrete strength and steel fiber type and other parameters, using the standard sample of 150 mm * 150 mm * 150 mm cube compressive strength and splitting tensile test, analysis of the factors affecting the tensile compression ratio of concrete. The results show that steel fiber can improve the compressive strength and splitting tensile strength obviously, the improvement of concrete compressive and tensile failure form, to maintain good integrity; the addition of steel fiber can improve the tensile and compression ratio of concrete, and the tension compression ratio increases with the increase of steel fiber volume ratio and gradually increase, the largest increase reached 27.4%; ratio of compressive and tensile strength increased with the matrix of steel fiber reinforced concrete decreases, but the decline was significantly reduced compared with the plain concrete; corrugated steel fiber and hook steel fiber can increase the tension compression ratio of concrete, corrugated steel fiber is better than that of hooked steel fiber, and thread shaped steel fiber is the worst, reduce The ratio of tension to pressure of concrete.

【作者单位】：沈阳建筑大学土木工程学院;辽宁省建筑材料监督检验院;
【基金】：辽宁省高等学校优秀人才支持计划项目(LR2014015) 百千万人才工程项目(2014921046) 沈阳市城乡建设委员会科技计划项目(sjw2015-14)
【分类号】：TU528.572

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