- 目录
- 化学建材
- 首页
废弃PE裂解蜡作为沥青温拌剂的可行性研究
作者：王东升1，李传强2，3，袁小亚2
（1.重庆交通大学 土木工程学院，重庆 400074；2.重庆交通大学 材料科学与工程学院，重庆 400074；
3.广西道路结构与材料重点实验室，广西 南宁 530007）
摘要：以高密度聚乙烯（HDPE）和低密度聚乙烯（LDPE）共混废塑料为原材料，在不同温度下裂解得到的2种裂解蜡WMa-1和WMa-2，采用该裂解蜡对70#基质沥青进行改性，探讨聚乙烯废塑料裂解蜡作为沥青温拌添加剂的可行性。试验结果表明，在试验掺量范围内，WMa-1和WMa-2均具有良好的降黏效果，WMa-1能提高沥青的高温性能和抗车辙性能，但对沥青的低温性能不利；WMa-2能显著降低沥青硬度，改善沥青的低温塑性，但使沥青的高温抗变形能力明显降低。
关键词：PE废塑料；聚乙烯蜡；温拌剂；温拌沥青
中图分类号：TU535 文献标识码：A 文章编号：1001-702X（2020）05-0150-05
Feasibility study on waste polyethylene cracking wax as asphalt mixing agent
WANG Dongsheng1，LI Chuanqiang2，3，YUAN Xiaoya2
（1.School of Civil Engineering，Chongqing Jiaotong University，Chongqing 400074，China；
2.School of Materials Science and Engineering，Chongqing Jiaotong University，Chongqing 400074，China；
3.Guangxi Provincial Key Laboratory of Road Structure and Materials，Nanning 530007，China）
Abstract：High-density polyethylene（HDPE） and low-density polyethylene（LDPE） blended waste plastics were used as raw materials，and two cracking waxes WMa-1 and WMa-2 were obtained by cracking at different temperatures. The two kinds of cracking waxes were used to modify the 70# matrix asphalt，and the feasibility of using polyethylene waste plastic cracking wax as asphalt warming additive was discussed. The test results show that WMa-1 and WMa-2 have good viscosity-reducing effect within a certain dosage range. WMa-1 can enhance the high temperature performance and rutting resistance of asphalt，but it is not good for the low temperature performance of asphalt. WMa-2 significantly reduces the hardness of the asphalt，so that the high-temperature anti-deformation ability of the asphalt is significantly reduced，but can improve the low-temperature plasticity of the asphalt.
Key words：PE waste plastic，polyethylene wax，warm mixing agent，warm mix asphalt