基于CA灌浆材料的半柔性路面低温性能  

Low Temperature Performance of Semi-flexible Pavement With CA Grouting Material

作　　者：张晓燕[1] 成志强[1] 孔繁盛[1] 

机构地区：[1]山西省交通科学研究院黄土地区公路建设与养护技术交通行业重点实验室,太原030006

出　　处：《北京工业大学学报》2017年第8期1205-1211,共7页Journal of Beijing University of Technology

基　　金：山西省交通厅科技项目(2013-1-1)

摘　　要：为了解决半柔性路面(semi-flexible pavement,SFP)材料低温性能不良的问题,以-10℃弯曲破坏应变为低温性能评价指标,对比研究了AC-13、AC-20普通沥青混合料以及4种级配的半柔性路面材料的低温性能;分析了普通水泥灌浆材料以及阴离子、阳离子水泥沥青(cement asphalt,CA)灌浆材料的半柔性路面低温性能,研究了CA灌浆材料对半柔性路面低温性能的改善作用.结果表明:4种半柔性路面材料-10℃弯曲破坏应变范围为1 050.16×10^(-6)~1 947.57×10^(-6),显著小于普通沥青混合料-10℃弯曲破坏应变值,且不满足现行规范对路面低温性能的技术要求;采用阳离子CA灌浆材料的半柔性路面-10℃弯曲破坏应变为3 159.26×10^(-6),阳离子CA灌浆材料可显著提高半柔性路面材料低温性能,而阴离子CA灌浆材料对半柔性路面材料的低温性能改善作用不显著.研究结论为半柔性路面的研究及技术推广提供了试验基础.To solve the problem of lower temperature performance of semi-flexible pavement material,the bending strain in -10 ℃ index was allowed to evaluate the low temperature crack resistance performance,and it was comparatively studied among AC-13,AC-20 ordinary asphalt mixture and four kinds of gradation of semi-flexible material. Furthermore,low temperature crack resistance performance of semi-flexible pavement with ordinary cement grouting material,anionic and cationic CA grouting material were comparatively studied, to analyze the improvement action on low temperature crack resistance performance with CA grouting material. Results show that bending strains in-10 ℃ of four kinds of semi-flexible pavement materials is in the 1 050. 16 × 10^(-6)-1 947. 57 × 10^(-6) range,significantly less than the values of ordinary asphalt mixture,which does not satisfy the requirements of the current specification for pavement performance at low temperature. Bending strains in-10 ℃ of semi-flexible pavement material with cationic CA grouting material is 3 159. 26 × 10^(-6),can significantly improve the low temperature performance,but improvement effect with anionic CA grouting material is not significant. The research provides a base of test for further research and technology promotion of semiflexible pavement.

关 键 词：半柔性路面 低温性能 水泥基灌浆材料 乳化沥青 

分 类 号：TU525.9[建筑科学—建筑技术科学]