摘要
为评价布敦岩沥青(BRA)与粗集料的黏附性能,根据粒径差异提出干拌称重法,给出定量评价指标——黏附系数δ,分析了粗集料岩性种类和布敦岩沥青预热温度对2种材料黏附性能的影响.借助表面能理论,通过分析不同粗集料岩沥青体系的黏附功Wa,验证了采用干拌称重法评价布敦岩沥青与粗集料黏附性能的有效性.结果表明:粗集料岩性种类和布敦岩沥青预热温度均对2种材料黏附性能有显著影响,推荐布敦岩沥青预热温度为90~96℃.
A new method of dry mixing and weighing was presented to evaluate the adhesion between Buton rock asphalt and coarse aggregate according to size variation,with a quantitative index,adhesion coefficientδ,on which the influence of pre-heating temperature and lithological characters of coarse aggregates had been also analyzed.Besides,the effectiveness of the method mentioned above to evaluate the adhesion between BRA and coarse aggregate was affirmed by analysing the adhesion work of different BRA-coarse aggregate systems based on surface energy theory.The results show that both pre-heating temperature and coarse aggregate types have a significant impact on the adhesion,and the recommended pre-heating temperature for BRA is 9096℃.
作者
刘黎萍
卢青兵
余颖
高经纬
LIU Liping;LU Qingbing;YU Ying;GAO Jingwei(Key Laboratory of Road and Traffic Engineering of Ministry of Education,Tongji University,Shanghai 201804,China)
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2019年第4期666-672,共7页
Journal of Building Materials
基金
福建省交通运输科技项目(201449)
关键词
布敦岩沥青
粗集料
黏附性能
黏附系数
表面能
黏附功
Buton rock asphalt(BRA)
coarse aggregate
adhesion
adhesion coefficient
surface energy
adhesion work
