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试验研究掺加短切玄武岩纤维(BFCS)对环氧沥青及其混合料性能的影响,采用黏度、拉伸、马歇尔、车辙和低温弯曲试验,分析了2%~10%(质量分数)BFCS掺量下改性环氧沥青及其混合料性能。试验结果表明:添加BFCS之后,改性环氧沥青的容留时间略有缩短,断裂延伸率和抗拉强度在掺量不大于6%时均有所提高,其中4%BFCS掺量改性环氧沥青断裂延伸率可达235%,比普通环氧沥青提高9.3%;与普通环氧沥青混合料相比,掺2%,4%和6%BFCS改性环氧沥青混合料依然保持良好的高温性能,且掺4%BFCS改性环氧沥青混合料的抗弯拉强度、最大弯拉应变和弯曲应变能密度临界值分别提高22.5%,18.9%和47.1%,表现出较高的低温强度和较好的低温变形能力。
The effects of BFCS on the properties of epoxy asphalt and its blends were investigated. The effects of BFCS content of 2% ~ 10% (mass fraction) on the properties of epoxy asphalt and its blends were investigated by using viscosity, tensile, Marshall, rut and low temperature bending test The amount of modified epoxy asphalt and its mixture performance. The experimental results show that after the addition of BFCS, the retention time of the modified epoxy asphalt slightly shortened, the elongation at break and the tensile strength increased at the dosage of no more than 6%, of which 4% BFCS modified epoxy Asphalt elongation at break reached 235%, which was 9.3% higher than that of ordinary epoxy asphalt. Compared with common epoxy asphalt, BFCS modified 2%, 4% and 6% modified epoxy asphalt still maintained good high temperature The flexural tensile strength, maximum bending strain and bending strain energy density critical value of 4% BFCS modified epoxy asphalt mixture increase by 22.5%, 18.9% and 47.1%, respectively, showing higher low temperature strength Good low temperature deformation ability.