摘要
再生石灰粉煤灰稳定碎石材料的耐久性直接影响着该技术的推广。本文通过优选抗裂级配和采用聚酯纤维及废旧沥青混合料(RAP)增韧技术对再生半刚性基层进行性能改善,对改善后的再生半刚性基层材料通过抗冻试验、抗疲劳试验以及抗冲刷试验进行耐久性评价,并与新料基层、改善前再生半刚性基层的耐久性进行对比,结果表明,增韧的再生半刚性基层材料其耐久性优于新料基层。
The durability of recycled lime fly ash stabilized macadam material directly affects its popularization. In this study, the performance of the regenerated semi-rigid base layer is improved by the preferred anti-crack grading and polyester fiber and waste asphalt mixture(RAP) toughening technology. The durability evaluation on improved regenerated semi-rigid base material is carried out by the freeze test, the fatigue test and the anti-scour test, and the durability comparison with the new base layer and unimproved regenerated semi-rigid base layer is reviewed. The results show that the toughened regenerated semi-rigid base material has better durability than the new base layer.
出处
《中国建材科技》
2020年第4期78-81,共4页
China Building Materials Science & Technology
基金
首都重点道路工程减灾减排技术及应用(2018-02-05)
北京建筑大学未来城市设计高精尖创新中心重大科技项目“首都重点道路工程减灾减排技术及应用”(2018-02-05)
国家自然基金项目(51678028)。
关键词
废旧石灰粉煤灰稳定碎石
再生利用
抗冻性能
抗裂性能
疲劳性能
waste lime fly ash stabilized macadam
recycling
antifreeze performance
crack resistance
fatigue performance
