基于拉拔试验的水泥路面加铺超薄罩面层间粘结性能研究  

Research on Bonding Performance of Super-thin Overlay on Cement Pavement Based on Bitumen Bond Strength Test

作　　者：龚哲毅 黄卫东[1] 吕泉[1] 吴林军 曾健 GONG Zheyi;HUANG Weidong;LV Quan;WU Linjun;ZENG Jian(Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804;Jiangxi Highway Engineering Co.,Ltd.,Nanchang 330096)

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]江西省公路工程有限责任公司,南昌330096

出　　处：《石油沥青》2023年第4期9-13,共5页Petroleum Asphalt

摘　　要：通过拉拔试验研究了水、养生时间、粘层油种类、多次破坏-愈合、层间处理方式、层间污染等因素对层间粘结性能的影响,试验结果表明:浸水会降低沥青的拉拔强度,确保路面在干燥条件下铺筑,并给予路面充足的养生时间是保证层间粘结性能良好的重要条件;初期强度更高的沥青,经过多次破坏-愈合循环后的稳定可愈合强度可能会较低,因此只有综合考虑初始强度与愈合强度,才能客观评价沥青的粘结性能;刻槽、拉毛、抛丸等层间处理方式可以增强层间粘结性能,且拉毛与抛丸处治的效果略优于刻槽;界面粉尘会降低粘结强度,施工前有必要对界面进行除尘处理,同时建议选用抗粉尘能力较强的油性粘层油对界面进行改善;柴油污染会使粘结性能大幅下降,因此施工过程中需要做好污染油污防范与清理。The influence of factors such as water,curing duration,type of viscous layer oil,base surface treatment,multiple destruction-healing,interlayer treatment method and pollution on the bond strength was studied based on bitumen bond strength test.The test results showed that immersion case will reduce the bond strength.Dry condition and enough curing time were an important conditions to ensure good adhesion between layers.The stable strength of asphalt with higher initial strength may be lower after multiple destruction-heal⁃ing cycles.Therefore,only by comprehensively considering the initial strength and stable strength can evaluate objectively adhesive performance of asphalt.Surface treatment methods such as grooving,roughening and shot blasting can enhance the interlayer bonding performance,and the effect of roughening and shot blasting treat⁃ment was slightly better than grooving.In addition,the interface dust will reduce the bond strength,so it was necessary to dust the interface before construction,and it was recommended to select the adhesive layer oil with strong dust resistance to improve the interface.Diesel pollution will greatly reduce the adhesion perform⁃ance,so it was necessary to do a good job in the prevention and cleaning of oil pollution during the construc⁃tion process.

关 键 词：层间粘结 拉拔试验 影响因素 自愈合性能 

分 类 号：U416.2[交通运输工程—道路与铁道工程]