硅酸盐通报2017，Vol.36Issue(4)：1326-1332,1344,8.
橡胶粉改性沥青制备及性能试验研究
Experimental Investigation on Preparation Technology and Performance of Rubber Powder Modified Asphalt
摘要
Abstract
In order to prepare the applicable rubber powder modified asphalt used for asphalt pavement aiming at the influence factors such as the particle size of crumb rubber, the dosage of powder, shearing time, preparing temperature and shearing rate, the orthogonal test of 5 factors and 4 levels was applied in this paper, Meanwhile, elastic recovery rate, shear strength, segregation softening point difference and viscosity-temperature regression coefficient |B| were selected as evaluation indexes.Based on that, the optimal scheme of preparation of rubber powder modified asphalt was selected and the rubber modified asphalt was prepared well and its mechanism and road performance were analyzed.The results show that the asphalt modified with rubber powder under the condition of 30 mesh rubber powder with content of 24%, shear time of 60 min, preparation temperature of 205 ℃and shear rate of 5000 r/min has better performance.The porous powder particles uniformly dispersed in the asphalt system absorb the light components of asphalt, produces swelling and weak chemical reaction and presents the space network cross-linked structure, which is the main reason for the excellent performance of rubber powder modified asphalt.关键词
道路工程/废旧胶粉改性沥青/制备工艺/路用性能/改性机理Key words
road engineering/rubber powder modified asphalt/preparation technology/road performance/mechanism analysis分类
交通工程引用本文复制引用
徐安花,王小雯,熊锐,陈华鑫,房建宏,况栋梁,王晓磊,刘子铭..橡胶粉改性沥青制备及性能试验研究[J].硅酸盐通报,2017,36(4):1326-1332,1344,8.基金项目
国家自然科学基金(51608046) （51608046）
青海省重大科技专项(2014-GX-A2A) （2014-GX-A2A）
青海省交通科技项目(2014-01) （2014-01）
长安大学中央高校基本科研业务费创新团队支持子计划-卓越青年基金项目(310831163501) （310831163501）
中央高校基本科研业务费专项资金项目(310831171001) （310831171001）
