摘要
为了控制废旧沥青回收料(RAP)级配及沥青含量的变异性,保障泡沫温拌再生沥青混合料的性能,将RAP料"分档"处理,并研究了RAP掺量对泡沫温拌再生沥青混合料高温性能、劈裂强度及短期抗水损害能力的影响。结果表明:RAP"分档"处理有利于降低RAP级配及沥青含量的变异性;随着RAP掺量增加,泡沫温拌再生沥青混合料的高温稳定性和劈裂强度提高;当RAP掺量为30%~50%时,泡沫温拌再生沥青混合料的短期抗水损害能力高于热拌沥青混合料,随着RAP掺量的增加,泡沫温拌再生沥青混合料的冻融劈裂强度比(TSR)逐渐减小。
In order to control the variability of gradation and asphalt content of RAP, and guarantee the performance of foamed warm mix recycled asphalt mixture,we divide the RAP into sections with different sizes(divided files),and the influence of RAP on high temperature performance splitting strength and short-term water resistance capability of the foamed warm mix recycled asphalt mixture is also studied. The research results indicates that RAP treated with "divided files" is helpful to reduce the vari- ability of gradation and asphalt content,with the increase of RAP, the high temperature stability and splitting strength of the foamed warm mix recycled asphalt mixture are enhanced,when the RAP content is 30%-50%, the short-term water resistance of the foam warm mix recycled asphalt mixture is higher than that of the traditional hot mix asphalt mixture,with the increase of RAP,the TSR of the foam warm mix recycled asphalt mixture decreases.
作者
战琦琦
郭伟
张瑜
吴涛
郭鹏
韦万峰
ZHAN Qiqi;GUO Wei;ZHANG yu;WU Tao;GUO Pen;WEI Wanfeng(Chongqing Zonjo Recycling Asphalt Concrete Co.Ltd.,Chongqing 400121,China;Chongqing Asphalt Pavement Recycling Engineering Technology Research Center,Chongqing g00121,China;National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《新型建筑材料》
北大核心
2018年第11期25-29,共5页
New Building Materials
基金
国家自然科学基金项目(51708072)
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开放基金项目(LHSYS-2016-007)
关键词
道路工程
RAP
泡沫
温拌
再生
pavement engineering
RAP
foam
warm mix
recycled
作者简介
战琦琦,男,1985年生,山东济宁人,工程师,硕士,研究方向为路面结构设计、施工技术及路面材料。地址:重庆市两江新区峨嵋大道北段99号,E—mail:32223524@qq.com。