四川建材

随着混杂纤维在高强混凝土中的应用，探究混杂纤维种类对高强混凝土的基本力学性能影响规律尤为关键。为研究纤维类型、纤维尺寸和纤维掺量等对高强纤维混凝土(HSFRC)抗压强度和劈裂抗拉强度的影响规律，筛选出合适的混杂纤维类型和掺量，设计高强纤维混凝土立方体抗压和劈拉试验，并对试验结果进行分析。结果表明，掺入有机纤维替代钢纤维会降低HSFRC的抗压强度和劈裂抗拉强度，相比之下，掺入1.0%TX12型有机纤维对于HSFRC的抗压强度影响最小，掺入0.5%TMA20型有机纤维对于HSFRC的劈拉强度影响最小。最后，结合各因素综合分析，认为掺入体积分数为1.0%的TX12型有机纤维可以在保证较高抗压强度和劈裂抗拉强度的同时，实现更佳的经济性和耐久性。

With the application of hybrid fibers in high-strength concrete, it is particularly crucial to explore the influence of hybrid fiber types on the basic mechanical properties of high-strength concrete.To study the influence of fiber type, fiber size, and fiber content on the compressive strength and splitting tensile strength of high-strength fiber reinforced concrete(HSFRC),suitable hybrid fiber types and contents were selected, and high-strength fiber reinforced concrete cube compressive and splitting tensile tests were designed, and the test results were analyzed.The results show that adding organic fibers instead of steel fibers can reduce the compressive strength and splitting tensile strength of HSFRC.In contrast, adding 1.0% TX12 type organic fibers has the least impact on the compressive strength of HSFRC,and adding 0.5% TMA20 type organic fibers has the least impact on the splitting tensile strength of HSFRC;Finally, based on comprehensive analysis of various factors, it is believed that adding TX12 organic fibers with a volume fraction of 1.0% can achieve better economy and durability while ensuring higher compressive strength and splitting tensile strength.