基于PP裂解蜡的温拌沥青性能  

Performance of Warm Mix Asphalt Based on Polypropylene Wax

作　　者：杨佳昕 李传强 凌天清[3] 郑智能[4] YANG Jia-xin;LI Chuan-qiang;LING Tian-qing;ZHENG Zhi-neng(National and Local Joint Engineering Laboratory of Traffic and Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China;School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Architecture and Urban Planning,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学交通土建工程材料国家地方联合工程实验室,重庆400074 [2]重庆交通大学材料科学与工程学院,重庆400074 [3]重庆交通大学城市与建筑学院,重庆400074 [4]重庆交通大学土木工程学院,重庆400074

出　　处：《筑路机械与施工机械化》2020年第4期14-19,27,共7页Road Machinery & Construction Mechanization

基　　金：重庆市博士后科研项目(Xm2015075);广西道路结构与材料重点实验室开放课题项目(2017gxjgclkf-002,2018S0112)。

摘　　要：以废旧塑料聚丙烯作为原料,以改性沸石作为催化剂,通过高温裂解的方法制得新型沥青温拌剂。运用单因素试验对比以及对催化剂加入前后的改性沥青性能研究,确定催化剂对PP催化裂解的良性作用。通过不同催化剂用量和蜡掺量的对比试验确定最佳掺量,采用常规试验方法对改性沥青特性进行数据分析。对裂解蜡和改性沥青进行FTIR检测,对比分析峰值变化。试验结果表明,370℃~400℃裂解温度下改性沥青的相对黏度呈下降趋势,说明PP裂解蜡对沥青具有降黏作用。Using waste polypropylene as raw material and modified zeolite as catalyst,a new warm mix agent for asphalt mixture was prepared through high temperature cracking method.The single-factor test and the comparison on the performance of modified asphalt before and after the catalyst addition were used to determine the positive role of the catalyst in the catalytic cracking of polypropylene.The optimal amount of catalyst and wax was determined through tests and comparisons,and the conventional test method was used to analyze the characteristics of the modified asphalt.The cracked wax and modified asphalt were tested by FTIR,and the peak changes were compared and analyzed.The results show that the relative viscosity of modified asphalt shows a downward trend at the cracking temperature of 370℃-400℃,suggesting that polypropylene wax has a viscosity-reducing effect on asphalt.

关 键 词：催化裂解 聚丙烯 蜡 温拌剂 

分 类 号：U414.1[交通运输工程—道路与铁道工程]