市政技术2024，Vol.42Issue(3)：171-179,9.DOI:10.19922/j.1009-7767.2024.03.171
废旧塑料(RPE)改性沥青混合料性能优化研究
Study on Performance Optimization of Waste Plastic(RPE)Modified Asphalt Mixture
郭仁亮 1刘嬴昌 1张国华 1阚保香 2邵潇3
作者信息
- 1. 山东省高密市柴沟镇明董三合同项目经理部,山东高密 261500
- 2. 山东中塬建设发展有限公司,山东潍坊 261000
- 3. 山东交通学院,山东济南 250011
- 折叠
摘要
Abstract
In order to improve and enhance the performance of modified asphalt and the road performance of the mixture,the Recycle Polyethylene(RPE)with the content of 4％,6％,8％and 10％were selected to modify the matrix asphalt.The penetration,ductility and softening point tests were conducted at different mixing temperatures(160,170 and 180 ℃)under mixing times(1.0,1.5 and 2.0 h).The effects of different modification conditions on the conventional properties of RPE modified asphalt were studied to determine the optimum modification conditions.Under the optimum modification conditions,the mechanical properties of ordinary asphalt mixture and RPE modi-fied asphalt mixture were compared.The road performance of RPE modified asphalt mixture were evaluated by high temperature rutting test,low temperature bending test and water stability test.The results show that the optimum as-phalt content is 5.16％in ordinary asphalt mixture,and the optimum RPE content is 6.5％in RPE modified asphalt mixture;The performance of RPE modified asphalt mixture is the best at mixing temperature of 170 ℃ with 1.5 h mixing time;The mechanical properties of RPE modified asphalt mixture are better than those of ordinary asphalt mixture because high temperature performance and water stability are improved,and the low temperature perfor-mance is reduced.关键词
废旧塑料/RPE改性沥青/改性工艺条件/最佳掺量/性能优化Key words
waste plastics/recycle polyethylene(RPE)modified asphalt/modification process conditions/the op-timum dosage/performance optimization分类
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郭仁亮,刘嬴昌,张国华,阚保香,邵潇..废旧塑料(RPE)改性沥青混合料性能优化研究[J].市政技术,2024,42(3):171-179,9.
