摘要
为明确不同温拌添加剂对橡胶改性沥青抗水损害性能的影响机制,通过原子力显微镜(AFM)力谱试验,分别测定了浸水前后不同温拌橡胶沥青的粘聚力和粘附力,并在此基础上分析了温拌橡胶沥青的水损伤特性。结果表明:未浸水条件下,添加Sasobit温拌剂后橡胶沥青的粘聚、粘附性能显著降低;浸水条件下,Advera、Evotherm能有效提高橡胶沥青的抗粘聚破坏能力,而Advera、Evotherm和Sasobit三种温拌剂均能改善橡胶沥青在水浸泡后的粘附性能;橡胶沥青中掺加温拌剂能有效降低其在浸水过程中的粘聚性能和粘附性能损伤。
In order to clarify the influence of different warm mix addtives on the moisture stability of rubber asphalt,the Atomic Force Microscopy(AFM)force spectroscopy tests were utilized to measure the cohesive forces and adhesive forces of different warm rubber asphalts before and after moisture conditioning.Furthermore,the moisture damage properties of the studied asphalts were analysed.The results show that Sasobit significantly reduced both the cohesive forces and adhesive forces of the rubber asphalt prior to moisture conditioning.In addition,Advera and Evotherm were found to inprove the cohesive forces after moisture conditioning,and all warm mix additive increased the adhesive forces of the rubber asphalt upon moisture conditioning.Finally,the inclusion of the WMA additives mitigated the reduction of cohesive forces and adhesive forces of the considered rubber apahlt after the moisture treatment.
作者
高榕
赵乐
GAO Rong;ZHAO Le(College of Civil Engineering,Xijing University,Xi’an 710123,China;CCCC First Highway Consultants Co.,Ltd.,Xi’an 710074,China)
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2018年第12期4045-4049,4055,共6页
Bulletin of the Chinese Ceramic Society
关键词
道路工程
温拌橡胶沥青
水稳定性
原子力显微镜
road engineering
warm rubber asphalt
moisture stability
atomic force microscopy
