基于正交试验的高黏改性沥青制备及性能研究  

Research on Preparation and Performance of High Viscosity Modified Asphalt Based on Orthogonal Test

作　　者：张海燕 唐辉[2] 封雅宏 曹东伟 王秋显 许斌 ZHANG Hai-yan;TANG Hui;FENG Ya-hong;CAO Dong-wei;WANG Qiu-xian;XU Bin(Beijing ZhongluGaoke Highway Technology Co.,Ltd.,Beijing 100088,China;Chongqing Jiaotong University,Chongqing 400074,China;Shijiazhuang Jiaojian Expressway Construction Management Co.,Ltd.,Shijiazhuang 050000,China)

机构地区：[1]中路高科(北京)公路技术有限公司,北京100088 [2]重庆交通大学,重庆400074 [3]石家庄市交建高速公路建设管理有限公司,石家庄050000

出　　处：《当代化工》2021年第3期571-575,共5页Contemporary Chemical Industry

基　　金：河北省交通运输厅科技项目(项目编号:XF2018-10)。

摘　　要：为了制备一种性能优良的高黏改性沥青,采用自制的热塑性弹性体TPE、增韧剂和增黏剂对基质沥青进行改性,制备了T-HVA高黏改性沥青。通过正交试验分析各改性剂掺量对沥青性能的影响,以软化点、延度和动力黏度等指标进行控制,并通过综合平衡法对各指标综合分析,最终确定T-HVA高黏改性沥青的各改性剂最佳掺配比例为:热塑性弹性体TPE掺量5%、增韧剂ZR掺量2%、增黏剂ZN1掺量2%、增黏剂ZN2掺量1%。与6%SBS改性沥青和传统高黏改性沥青性能对比发现:最佳掺配比例下的T-HVA高黏沥青具有更好的低温性能、施工和易性和热储存稳定性,其高温性能远优于SBS改性沥青,但略差于传统高黏沥青。通过荧光显微图像分析表明,T-HVA高黏改性沥青形成了致密的网络状结构,改性材料分散性良好,沥青与改性剂间不存在明显界面。综合各项指标分析,T-HVA高黏改性沥青具有较强的集料黏结性和耐老化性,表现出较好的高温稳定性和低温柔性。In order to prepare a high-viscosity modified asphalt with excellent performance,self-made thermoplastic elastomer TPE,toughener and tackifier were used to modify matrix asphalt to prepare T-HVA high-viscosity modified asphalt.Orthogonal test was used to analyze the influence of each modifier dosage on asphalt performance,and the indexes including softening point,ductility and dynamic viscosity were controlled,and the comprehensive analysis of each index was carried out by the comprehensive balance method to finally determine the optimal blending ratio of each modifier of the modified asphalt as follows:thermoplastic elastomer TPE 5%,toughened ZR 2%,thickener ZN12%,thickener ZN 21%.Compared with the performance of 6%SBS modified asphalt and traditional high-viscosity modified asphalt,it was found that T-HVA high-viscosity asphalt with the best blending ratio had better low-temperature performance,construction and workability,and thermal storage stability.High temperature performance was far better than SBS modified asphalt,but slightly worse than traditional high viscosity asphalt.Fluorescence microscopic image analysis showed that a dense network structure was formed in the T-HVA high-viscosity modified asphalt,the modified material was well dispersed,and there was no obvious interface between asphalt and modifier.Based on the analysis of various indicators,T-HVA high-viscosity modified asphalt had strong aggregate adhesion and aging resistance,and showed good high-temperature stability and low-temperature flexibility.

关 键 词：道路工程 高黏改性沥青 正交试验 性能研究 

分 类 号：TE621[石油与天然气工程—油气加工工程]