基于表面能理论的抗剥落剂-SBS沥青改善集料黏附性研究  

Research on Performance and Microscopic Mechanism of Modified Diatomite SBS and High Viscosity Compound Modified Asphalt Based on Surface Energy Theory

作　　者：潘峰 靳灿章 肖田 杨凯 PAN Feng;XIAO Tian;YANG Kai;JIN Canzhang(Tianjin Haihe Developing Investment Co.Ltd.,Tianjin 300010,China;Tianjin Municipal Engineering Design&Research Institute Co.Ltd.,Tianjin 300392,China)

机构地区：[1]天津市海河建设发展投资有限公司,天津300010 [2]天津市政工程设计研究总院有限公司,天津300392

出　　处：《天津建设科技》2024年第5期12-14,74,共4页Tianjin Construction Science and Technology

基　　金：天津市交通运输科技发展计划(2022-18)。

摘　　要：为研究抗剥落剂掺加沥青中与集料之间的黏附性效果,制备了SBS改性沥青,掺加定量的抗剥落剂,与70#基质沥青进行对比试验。将改良水煮法试验结果作为沥青-集料黏附性的一个初步判断依据;采用接触角法得到表面能参数,计算黏附功分析其黏附性;成型沥青混合料,采用冻融劈裂试验确定沥青混合料的水稳定性,验证沥青-集料的黏附性。改良水煮法得到的3种沥青黏附性等级:SBS改性沥青和SBS-A黏附等级均为5级,70#基质沥青黏附等级为4级。沥青与石灰岩的黏附功:SBS-A>SBS改性沥青>70#基质沥青,SBS-A较SBS改性沥青黏附功提高了7.3%,较70#基质沥青黏附功提高了11.9%。SBS-A沥青混合料的TSR值较SBS沥青混合料的劈裂强度比提高2.9%,试验结果充分验证了SBS-A与石灰岩之间的黏附性较高。In order to study the effect of adhesion between the anti-spalling agent and the aggregate,SBS modified as⁃phalt was prepared and dosed with a quantitative amount of anti-spalling agent in this paper,comparative tests were also carried out using 70#matrix asphalt.A modified boiling test was used as a preliminary basis for judging the adhesion of asphalt-aggregate adhesion,and the contact angle method was used to obtain surface energy parameters to calculate the adhesion work to analyze the adhesion.The asphalt mixture was molded and the freeze-thaw splitting test was used to determine the water stability of the asphalt mixture and to verify the asphalt-aggregate adhesion.The 3 kinds of asphalt adhesion grades obtained by the modified boiling method are:SBS modified asphalt and SBS-A adhesion grade are grade 5,and 70#matrix asphalt adhesion grade is grade 4.The adhesion power of the asphalt with limestone was:SBS-A>SBS-modified asphalt>70#matrix asphalt,and the adhesion power of SBS-A increased by 7.3%compared to SBS-modified asphalt and SBS-A increased by 11.9%compared to 70#matrix asphalt.The TSR value of SBS-A asphalt mixture is 2.9%higher than that of SBS-modified asphalt mixture,and the test results fully verify that the adhesion between SBS-A and limestone is high.

关 键 词：沥青路面 SBS改性沥青 接触角 黏附功 冻融劈裂试验 表面能 抗剥落剂 

分 类 号：U414[交通运输工程—道路与铁道工程]