摘要
针对溶剂型冷补沥青性能不足及其技术指标评价方法不完善的问题,本文优选冷补沥青的材料组成,通过试验确定了冷补沥青的最佳制备工艺。采用正交试验设计方法研制一种性能优良的溶剂型冷补沥青,并对冷补沥青的性能评价方法进行了优化,通过对比试验对其路用性能进行了验证。研究结果表明,研发的溶剂型冷补沥青最佳配合比为m(基质沥青)∶m(稀释剂)∶m(增黏剂)∶m(表面活性剂)∶m(补强剂)∶m(抗剥落剂)=100∶(20~25)∶4∶1∶5∶0.2。确定了溶剂型冷补沥青的最佳制备工艺,在110℃热熔融沥青中加入定量稀释剂,用高速剪切机搅拌10 min,其次加入定量增黏剂、补强剂和表面活性剂的混合物,持续搅拌10 min,最后加入定量抗剥落剂搅拌10 min。综合考虑各因素,经优化后的性能评价方法能较好地反映冷补沥青的路用性能。基于正交试验设计方法和最佳制备工艺制备的溶剂型冷补沥青性能优于选择的成品冷补沥青,并且能够拌制出性能优良的混合料。
Aiming at the problems of insufficient performance and imperfect technical index evaluation method for solvent cold patching asphalt, the composition was optimized, and the optimum preparation process was determined through experiments. A solvent cold patching asphalt with excellent performance was developed by orthogonal experiment, and the performance evaluation method was optimized. The road performance was verified by comparative experiment. The results show that the optimum mixture ratio of the solvent cold patching asphalt is m(asphalt) ∶m(diluent) ∶m(tackifier) ∶m(surfactant) ∶m(fortifier) ∶m(anti-stripping agent)=100 ∶(20~25) ∶4 ∶1 ∶5 ∶0.2. The optimum preparation process of the solvent cold patching asphalt is determined as follows: add a certain amount of diluent into the 110 ℃ hot melt asphalt, stir with a high-speed shear for 10 min, then add a mixture of quantitative tackifier, fortifier and surfactant, stir continuously for 10 min, finally add a certain amount of anti-stripping agent and stir for 10 min. Taking all factors into consideration, the optimized performance evaluation method can better reflect the road performance of cold patching asphalt. The solvent cold patching asphalt prepared by orthogonal experiment and optimal preparation process is better than the selected finished cold patching asphalt, and can be mixed to produce a mixture with excellent performance.
作者
郑木莲
金佳宏
刘侠
鞠健
董长江
闫春梅
ZHENG Mulian;JIN Jiahong;LIU Xia;JU Jian;DONG Changjiang;YAN Chunmei(Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang’an University,Xi’an 710064,China;Jining Hongxiang Highway Survey Design and Research Institute Co.,Ltd,Jining 272100,China;Hohhot Transportation Bureau,Hohhot 010010,China)
出处
《硅酸盐通报》
CAS
北大核心
2022年第1期342-353,共12页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(52078051)
山东省工信厅技术创新项目([2020]8号)。
关键词
冷补沥青
外加剂
正交试验
制备工艺
性能评价
技术指标
cold patching asphalt
admixture
orthogonal test
preparation process
performance evaluation
technical index
