江苏大学学报（自然科学版）2018，Vol.39Issue(2)：242-248,7.DOI:10.3969/j.issn.1671-7775.2018.02.020
SBS-胶粉-HDPE复合改性沥青制备工艺
Preparation technology of modified asphalt SBS-rubber powder-HDPE composite
摘要
Abstract
Using SK-90#matrix asphalt,the orthogonal experiment with 6 test variables was adopted to prepare composite modifying asphalt.The determined technical indexes were analyzed by gray relational analysis to obtain the optimum preparation process parameters of composite modifying asphalt.The results show that the softening point and 5 ℃ ductility of asphalt are significantly improved by SBS-rubber powder-HDPE,and the elastic recovery rate of the twenty-second group sample reaches 60% with good elasticity.The optimum technological parameters for preparing SBS-rubber powder-HDPE modifying asphalt are determined by gray relational analysis with modifier SBS content of 5.0%,modifier powder content of 20.0%,modifier HDPE of 4.5%,shear rate of 4 500 r·min-1,shear time of 45 min and shear temperature of 170 ℃.SBS and HDPE are intertwined with each other under the action of high temperature shearing to form three-dimensional network structure with polymer as dispersion medium and asphalt as dispersed phase,and the overall performance of composite modifying asphalt is improved.关键词
复合改性沥青/正交试验/SBS/胶粉/HDPEKey words
composite modifying asphalt/orthogonal test/SBS/rubber powder/HDPE分类
交通工程引用本文复制引用
何锐,黄鑫,仵江涛,王振军..SBS-胶粉-HDPE复合改性沥青制备工艺[J].江苏大学学报（自然科学版）,2018,39(2):242-248,7.基金项目
青海省重大科技专项计划项目(2014-GX-A2A) （2014-GX-A2A）
广西科技计划项目(桂科AC16380112) （桂科AC16380112）
长安大学中央高校基本科研业务费专项资金资助项目(310831162001,310831161001) （310831162001,310831161001）
