摘要
目前国内大孔隙沥青混合料大都使用PE、SBS、EVA等热塑性改性沥青,然而循环荷载、温度应力和水的综合作用容易引发热塑性沥青混合料力学强度和耐久性降低。环氧沥青的固化反应可使沥青从热塑性转变为热固性,从而获得比普通沥青优异得多的物理、力学性能。为提高大孔隙沥青混合料的性能,使用环氧沥青作为黏结剂,制配出大孔隙环氧沥青混合料,通过常规的结构性能测试,并与大孔隙热塑性沥青混合料性能进行对比,结果表明大孔隙环氧沥青混合料不仅具有良好的路用性能,还具有优秀的排水性能和抗滑性能。
PE,SBS and EVA and some other thermo-plastic modified asphalt are widely used in porous asphalt concrete mixture pavement during these years. However, these types of asphalt concrete mixture are easily affected by the combined action of cycle loading.temperature stress and water, leading to a decrease of the mixture＇s mechanical performance. The solidification reaction of epoxy asphalt can turn the asphalt from thermo-plastic one to thermo-set one, bringing with much better mechanical performance and physical property than common asphalt. In order to enhance the performance of porous asphalt concrete mixture, epoxy asphalt is used as binder in the process of proportioning design and it turns out that porous epoxy asphalt concrete mixture has better mechanical property as well as better sliding resistance and surface drainage properties comparing with porous thermo-plastic asphalt concrete mixture in some conventional tests of structure performance.
出处
《公路》
北大核心
2011年第12期11-14,共4页
Highway
基金
教育部新世纪优秀人才支持计划
项目编号NCET-08-0118
