半刚性基层沥青路面纵缝水泥注浆处治研究  

Research on Cement Grouting Treatment of Longitudinal Joints in Semi-rigid Base Asphalt Pavement

作　　者：王少华 罗雪平 陈楚鹏 许新权 WANG Shaohua;LUO Xueping;CHEN Chupeng;XU Xinquan(Guangdong Road and Bridge Construction Development Co.,Ltd.,Guangzhou 510420,Guangdong,China;Guangdong Hualu Transportation Technology Co.,Ltd.,Guangzhou 510420,Guangdong,China)

机构地区：[1]广东省路桥建设发展有限公司,广东广州510420 [2]广东华路交通科技有限公司,广东广州510420

出　　处：《广东交通职业技术学院学报》2024年第5期18-22,共5页Journal of Guangdong Communication Polytechnic

基　　金：广东省省级科技计划项目(编号:2021B1111610002)。

摘　　要：依托中江高速公路改扩建工程,开展了半刚性基层沥青路面纵缝水泥注浆处治试验,试验了先注纵缝再注缝侧和先注缝侧再注纵缝两种注浆方案,采用贝克曼梁弯沉试验、钻芯及开挖检测等方式评价了不同注浆方案效果。结果表明:两种方案均能有效降低路表弯沉,提高路面结构强度,但先注缝侧再注纵缝效果更佳;两种方案均能对下基层及以下结构层脱空、纵缝等有效填充,填充效果无明显差别,且裂缝位置下基层芯样强度均值分别为1.4 MPa和1.2 MPa,底基层芯样强度均值分别为2.4 MPa和2.8 MPa。Based on the renovation and expansion project of the Zhongjiang Expressway,cement grouting treatment tests were conducted on the longitudinal joints of semi rigid base asphalt pavement.Two grouting schemes were tested,namely,injecting the longitudinal joint first and then the joint side,and injecting the joint side first and then the longitudinal joint.The effects of different grouting schemes were evaluated using Beckman beam deflection test,core drilling,and excavation detection methods.The results show that both schemes can effectively reduce road surface deflection and improve the structural strength of the road surface,but the effect of first injecting the side joint and then injecting the longitudinal joint is better.Both schemes can effectively fill voids and longitudinal joints in the lower and the following structural layers.There is no significant difference in the filling effect between the two schemes,and the average strength of the base core samples at the crack location is 1.4 MPa and 1.2 MPa,respectively.The average strength of the base core samples is 2.4 MPa and 2.8 MPa,respectively.

关 键 词：沥青路面 水泥注浆 改扩建 高速公路 结构补强 应用效果 

分 类 号：U418.6[交通运输工程—道路与铁道工程]