温拌再生沥青混合料集料-沥青黏附特性研究.pdfVIP

学兔兔 第 18卷第 2期 建 筑 材 料 学 报 V01．1 8．No．2 2015年 4月 J0URNAL oF BUILDING MATERIALS Apr．，2015 文章编号：1007—9629(2015)02—0312—04 日 l皿 拌再生沥青混合料集料一沥青黏附特性研究 郭 鹏， 曹雪娟， 唐伯明 (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，重庆400074) 摘要：为研究温拌再生沥青混合料黏附特性，根据表面自由能理论，通过测定温拌再生沥青和集料 的表面能参数，计算了温拌再生沥青与集料的黏附功．结果表明：温拌剂的添加改善了再生沥青中 的极性分量以及Lewis酸、碱作用力，改善了再生沥青的表面自由能，提高了沥青与石料的裹附能 力；有水存在时温拌再生沥青一集料黏附功比较大，说明温拌条件下再生沥青混合料的水稳定性可 以得到一定改善． 关键词：表面自由能；温拌再生沥青混合料；沥青一集料；黏附 中图分类号：U416．26 文献标志码：A doi：10．3969／j．issn．1007—9629．2015．02．022 Research on Aggregates‘Asphalt Adhesion of Warm Mix Recycled Asphalt Mixture GUO Peng， CAO Xuej“a ， TANG Boming (StateLocal Area Jointed Engineering Laboratary of Traffic Civil Engineering Materials． Chongqing Jiaotong University，Chongqing 400074，China) Abstract：In order to study the adhesion characteristics of warm-mixing recycled asphalt mixture，the sur face energy parameters of warm—·mixing recycled asphalt and aggregate were measured according to the sur—— face free energy theory，and then，the adhesion work between warm—mixing recycled asphalt and aggregate were calculated．The results show that，by adding the warm mix agent，the polar component of recycled asphalt and Lewis acid，base interaction are improved and the attached ability between the asphalt and ag— gregate is improved．At the same time。the adhesive work between warm—mixing recycled asphalt and ag— gregate is relatively large in the presence of water，it indicates that the water ability of recycled asphalt mixture can be improved to some extent under the warm—mixing cond