论文部分内容阅读
环氧沥青是一种性能优异的道路铺面材料,固化后强度较高且在高温下不易熔融流淌,但采用不同基质沥青制备的环氧沥青在性能方面存在差异。分别采用70号沥青、90号沥青和SBS改性沥青制备了环氧沥青(EA),采用荧光显微镜观察各种环氧沥青材料的断面微观相结构后发现,SBS沥青制备的环氧沥青(SBS-EA)相容性相对较好;力学性能方面,SBS-EA具有更高的拉伸强度和断裂伸长率,分别可达2.28MPa和475%;此外,SBSEA的玻璃化转变温度低至-17℃,在低温条件下依然能保持一定的韧性和变形能力。
Epoxy asphalt is a kind of road paving material with excellent properties. It has high strength after curing and is not easy to melt and flow at high temperature. However, there are differences in performance between epoxy asphalt prepared with different matrix asphalt. Epoxy asphalt (EA) was prepared by using asphalt No.70, asphalt No.90 and SBS modified asphalt respectively. The microscopic structure of the cross-sections of various epoxy asphalt materials was observed under a fluorescence microscope. It was found that SBS asphalt prepared epoxy asphalt (SBS -EA), SBS-EA has higher tensile strength and elongation at break, up to 2.28MPa and 475% respectively. In addition, the glass transition temperature of SBSEA is as low as - 17 ℃, still maintain a certain degree of toughness and deformation under low temperature conditions.