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采用废旧塑料和增粘剂合成沥青混合料改性添加剂MPE,改性剂采用后添加工艺,即在沥青混合料拌和时直接投入,不需要经过加工厂对沥青的改性。在不同MPE改性添加剂掺量下,进行马歇尔稳定度及劈裂强度试验,得出残留稳定度及冻融劈裂残留强度比随MPE掺量变化的曲线图;进行车辙试验,得出不同MPE掺量下的动稳定度曲线,改变拌和工艺,并与SBS改性沥青混合料和现场取样MPE沥青混合料进行试验对比,最终得出适宜的MPE掺量可有效改善沥青混凝土的高温稳定性和水稳定性。并运用高倍显微镜从微观结构上对其改性原理进行了解释。该工艺既简单易行,又经济环保。
Abstract：Asphalt modifier additive MPE was made from recycled plastics,which was added when aggregates mixed with asphalt,avoiding preparation of asphalt modifying in the factory.At different contents of modifier additive MPE,Marshall stability and tensile strength tests were made in order to obtain the relationship of residual stability & tensile strength ratio with amounts of MPE.Besides,dynamic stability tests of asphalt concrete were executed,including conditions of different amounts of MPE,different mixing technics as well as SBS modified asphalt and field product.Finally,optimal content of MPE can be got,at which high-temperature & moisture stability of asphalt concrete can be improved most.Then modifying principle was revealed by high power microscope from microstructure.In addition,this technic is not only simple and easy,but also economical and benefit for environmental protection.
[1]方长青.包装废PE改性沥青的研究[D].西安理工大学,2005.
[2]李慧川.废旧包装PE改性道路沥青的试验研究[D].华中科技大学,2006.
[3]周研,于永生,张国强.废塑料改性沥青的性能研究[J].石油沥青,2007,21(4):6-9.
[4]张登良.沥青路面工程手册[M].人民交通出版社2004:132-134.
[5]陈国强,刘黎萍,高晓飞.Sasobit改性沥青混合料的性能评价[J].公路工程.2009,34(6):64-67.
[6]彭红卫,谷莉,龚璐.Domix改性沥青及混合料的路用性能研究[J].公路工程.2010,35(4):84-88.
[7]杨锡武,刘克,杨大田.PE改性沥青的几个问题[J].中外公路.2008,28(6):203-207.
[8]李同祥.PE改性沥青的路用研究[J].中国公路学报.1994,7(1):8-13.
[9]许世展,孙建波,田亚林.PE改性沥青理论分析及其试验研究[J].2006,6:189-190.
[10]孙长新,李明国.高聚物化学网构改性沥青混合料高温稳定性能研究[J].中南公路工程,20053,0,(3):73-76.
[11]马健萍,李豁,孙长新.高聚物化学网构改性沥青原理及性能[A].第四届国际道路和机场路面技术大全[C].200,2(4).2004,29(3):61-65.
[12]JTJ 052-2000,公路工程沥青及沥青混合料试验规程[S].
[13]JTJ F40-2004,公路沥青路面施工技术规范[S].
基本信息:
中图分类号:U414
引用信息:
[1]王家主.废旧塑料合成改性添加剂对沥青混合料性能的影响[J].公路工程,2011,36(06):74-77.
基金信息:
福建省交通科技发展项目(200703)
2011-12-20
2011-12-20