摘要
通过对比使用环氧改性沥青前后沥青混合料样品强度的变化等试验方法,评价环氧改性沥青对沥青混凝土耐久性和疲劳寿命的影响,以及环氧改性沥青作为沥青黏结剂的性能。结果表明:加入环氧改性沥青的沥青混合料拉伸强度明显高于对照组,并且其强度随着环氧沥青质量分数的增加而增加。此外,四点弯曲试验结果表明,环氧改性沥青可有效减少试样梁的挠度,从而改善沥青混合料的抗疲劳性。另外,采用在中间层加入环氧改性沥青的试验方法表明,使用环氧改性沥青作为黏结剂可改善两层之间的黏合强度。
The performance of epoxy-modified asphalt as an asphalt binder,as well as the effect of epoxy-modified asphalt on the durability and fatigue life of asphalt concrete was investigated by comparing the changes in the strength of asphalt mixture samples before and after using epoxy-modified asphalt.The results showed that the tensile strength of the asphalt mixture with epoxy modified asphalt was significantly higher than that of the control group,and its strength increased with the increase of epoxy asphalt content.In addition,the four-point bending test results showed that epoxy-modified asphalt effectively reduced the deflection of the sample beam,thereby improving the fatigue resistance of the asphalt mixture.And the experiments of adding epoxy modified asphalt in the middle layer showed that using epoxy modified asphalt as a binder improved the bonding strength between the two layers.
作者
祝雯霞
ZHU Wen-xia(Xi'an International University,Xi'an 710077,China)
出处
《当代化工》
CAS
2021年第4期844-847,共4页
Contemporary Chemical Industry
基金
陕西省教育厅,沥青混凝土路面性能研究(项目编号:19JK0729)。
关键词
环氧改性沥青
沥青混合料性能
改性剂质量分数
Epoxy-modified asphalt
Properties of asphalt binders
Optimum modifier content
