Study on the Adhesion Effect Factors between Asphalt And Aggregate in Double Chip Seal
Zhou Miaomiao;Zhu Qitao;Qiu Yeji;Shanxi Road&Bridge Group Co.,Ltd.;Xi'an Highway Institute;
In order to study on the adhesion effect factors between asphalt and aggregate in double chip seal,this research adopts the asphalt climbing height test and uses asphalt climb height as an evaluation index to study the effect of underlying gravel spreading temperature on adhesion.We take crushed stone peeling rate as inedx to value the effect of pre-wrapped and rubber particles content on adhesion by using the room temperature brush test,to value the effect of upper stone and asphalt spreading temperature,the type of asphalt on adhesion by room and low temperature brushing test.Research indicates:when the amount of pre-wrapped90#matrix asphalt accounts is 0.8% of the upper layer gravel weight,rubber particle content is 1% to 2%,SBS modified asphalt spreading temperature is 155℃ and lower stone spreading temperature is 80℃～120℃,the adhesion effect between asphalt and aggregate is excellent.
【CateGory Index】： U414