期刊论文

中文

硅酸盐通报

1001-1625

2019

38

8

2614-2621+2630

10.16552/j.cnki.issn1001-1625.2019.08.041

51778069:国家自然科学基金 2015CB057700:国家重点基础研究发展计划（973计划）

本校为第一机构

选用端钩型钢纤维、单丝聚丙烯纤维和纤维素植物纤维,进行了共28组普通素混凝土、单掺、二元及三元纤维混掺增强高性能混凝土的梁三分点加载弯曲韧性试验。绘制了梁受弯荷载-挠度全曲线和底部弯拉应力-应变曲线,结合规范法和文献法分别计算了各纤维混凝土梁的弯曲韧性指标,分析了纤维掺量及混掺方式对混凝土弯曲韧性的影响。结果显示,所有方法计算混凝土弯曲韧性指标结果相近;相较普通素混凝土,纤维的掺入可显著提升混凝土的弯曲韧性,随着纤维掺量增加,三种单掺纤维混凝土试件弯曲韧性指标分别大致呈"先增后减"、"递增"及"递减"趋势;纤维增强混凝土弯曲韧性由强到弱依次为钢纤维,聚丙烯纤维,纤维...

The flexural toughness test of a total of 28 sets of common plain concrete,single-mixed,binary and ternary fiber blending reinforced high-performance concrete beams were carried out with end-hook steel fiber,monofilament polypropylene fiber and cellulose plant fiber.The flexural load-deflection curve and the bending-tension stress-strain curve at the bottom of the beam were plotted.The flexural toughness indexes of each fiber reinforced concrete beam were calculated by combining the standard method and the literature method.The influence of fib...