为改善沥青路面的质量,延长路面的使用寿命,探讨玄武岩短切纤维在增强沥青混合料路用性能方面的适用性,选用AC-13C型级配,通过高温稳定性、水稳定性、低温性能、疲劳性能,对比研究玄武岩短切纤维改性沥青混合料的路用性能。试验结果表明:玄武岩短切纤维沥青混合料各项路用性能均能满足规格的要求。掺加玄武岩短切纤维可提高沥青混合料的高温性能(动稳定度为1 428次/mm),显著提高低温抗裂性能(弯曲破坏应变为3 478με),疲劳性能提高2倍以上。玄武岩短切纤维可作为改善沥青路面路用性能的改性剂应用于公路建设中。
In order to improve the quality of asphalt pavement,prolong its service life and explore the applicability of short-cut basalt fiber in enhancing asphalt mixture performance,the AC-13C asphalt mixture was investigated for its pavement performance of high temperature stability,water stability,low temperature anti-cracking and fatigue.The research indicates that the pave performance of the short-cut basalt fiber modified asphalt mixture meets the code requirement.With the short-cut basalt fiber,the asphalt misture can achieve better pavement performance of rut resistance,low temperature anti-cracking and fatigue.The short-cut basalt fiber can be used in road engineering as an additive material that enhances the comprehensive performance of asphalt pavement.