| 60 | 0 | 15 |
| 下载次数 | 被引频次 | 阅读次数 |
为研究设缓冲层的水泥混凝土路面各层间的结合状态，以AC-13沥青混合料为缓冲层，强度等级C30的混凝土为路面面层，水泥稳定碎石为基层制作试件，通过改造土工直剪仪剪切盒，在竖向荷载分别为0.327、0.627、0.927、1.227 kN,在温度分别为15、30、60℃下进行层间剪切试验。试验结果表明：相同温度下，水泥稳定碎石与缓冲层界面、水泥混凝土与缓冲层的层间抗剪强度均随竖向荷载的增大而增大；相同竖向荷下，2个界面的层间抗剪强度均随温度升高而减小，摩阻因数、黏聚力和层间结合系数随温度升高而减小。各参数变化规律一致，可用层间结合系数综合表征层间结合状态。
Abstract：To study the bonding state between different layers of cement concrete pavements with a buffer layer, AC-13 asphalt mixture is used as the buffer layer, and concrete with a strength grade of C30 is used as the surface layer. Cement-stabilized crushed stone is used for the base layer to fabricate specimens. Shear tests are conducted using a modified geotechnical direct shear apparatus with vertical loads of 0.327, 0.627, 0.927, 1.227 kN at temperatures of 15, 30, 60 ℃. The test results indicated that, at the same temperature, the shear strength at the interface between the cement-stabilized crushed stone and the buffer layer, as well as the shear strength at the interface between the cement concrete and the buffer layer, both increase with the increase in vertical load. At the same vertical load, the shear strengths at the two interfaces decrease with the rise in temperature, and the friction coefficient, cohesion, and interlayer bonding coefficient also decrease with the increase in temperature. The variation patterns of each parameter are consistent, and the interlayer bonding state can be comprehensively characterized by the interlayer bonding coefficient.
[1] LIU Y,QIAN ZD,YIN Y X,et al.Investigation on interlayer behaviors of a double-layered heterogeneous asphalt pavement structure for steel bridge deck[J].Journal of Materials in Civil Engineering,2022,34(5):04022062.
[2] 赵之仲，柳泓哲，刘桂强，等.ATB柔性基层与半刚性基层的层间抗剪规律[J].山东大学学报(工学版),2019,49(3):57-62.
[3] HWANG H S,RYU S W,OH J S,et al.Investigation of texture effects at interlayer bonding behavior between asphalt concrete (AC) overlay on Portland cement concrete (PCC)[J].Canadian Journal of Civil Engineering,2022,49(3):412-419.
[4] 中华人民共和国交通运输部，中交公路规划设计院有限公司.公路水泥混凝土路面设计规范：JTG D40—2011[S].北京：人民交通出版社，2011.
[5] LU Z,FENG Z G,YAO D D,et al.Bonding performance between ultra-high performance concrete and asphalt pavement layer[J].Construction and Building Materials,2021,312:125375.
[6] JIA X Y,HUANG B S.Characterization of shear resistance of interlayer between concrete bridge deck and asphalt concrete overlay utilizing inclination shear test[J].Journal of Materials in Civil Engineering,2022,34(2):04021424.
[7] HE H Z,AI C F,RAHMAN A.Characterization of interface morphology and its impact on interlayer bonding strength in double-layered asphalt systems[J].Construction and Building Materials,2024,421:135617.
[8] YANG X,RAHMAN A,LUO Y,et al.Effects of interlayer surface characteristics on the interface bonding between double-layered asphalt systems[J].International Journal of Pavement Engineering,2023,24(1):2192496.
[9] WEIDENMANN K A,BAUMG?RTNER L,HASPEL B.The edge shear test:an alternative testing method for the determination of the interlaminar shear strength in composite materials[J].Materials Science Forum,2015,825/826:806-813.
[10] KOMARAGIRI S,DRIMALAS T,HAZLETT D,et al.An in-situ method to evaluate the interlayer bond between hot-mix asphalt and portland cement concrete surface[J].Construction and Building Materials,2024,411:134648.
[11] JIN T P,LIU L K,YANG R,et al.Investigation of interlayer bonding performance between asphalt concrete overlay and Portland cement concrete using inclined shear fatigue test[J].Construction and Building Materials,2023,400:132681.
[12] HE H,RAHMAN A,AI C.Interlocking characteristic and its correlation with interlayer shear strength in typical double-layered asphalt systems[J].International Journal of Pavement Engineering,2024,25(1):2347996.
[13] 龚育超.半刚性基层表面不同层间处治方法的试验研究[D].西安：长安大学，2018.
[14] 刘斌.蜡制养护剂用于水泥混凝土路面隔离层作用机理及应用研究[D].长沙：长沙理工大学，2016.
[15] 曹明明，陆阳，黄晚清，等.复合式路面层间界面剪切滑移特性[J].交通运输工程学报，2018,18(4):1-11.
[16] 任少博，王浩，邹晓龙，等.薄层橡胶沥青复合式路面层间高温滑移特性[J].科学技术与工程，2019,19(29):294-300.
[17] 胡凯健.刚柔复合式路面层间抗剪性能分析[D].成都：西南交通大学，2020.
[18] 武书华，陈华鑫，张久鹏，等.半刚性基层沥青路面层间界面力学特性与黏结状态的试验研究[J].东南大学学报(自然科学版),2016,46(2):406-412.
[19] 赵碧全，冉武平，王亚强.基面层间接触状态对沥青路面车辙影响的室内试验分析[J].公路工程，2023,48(4):64-69.
[20] JANGATE W,SUJIVORAKUL C.The effect of surface roughness and a steel anchor on the direct-shear bond between existing concrete and new concrete[J].Structures,2024,70:107799.
[21] 何锐，陈拴发，胡苗，等.水泥混凝土路面沥青混凝土功能层剪切变形性能[J].建筑材料学报，2015,18(3):415-420.
[22] 中华人民共和国交通部，交通部公路科学研究所.公路沥青路面施工技术规范：JTG F40—2004[S].北京：人民交通出版社，2005.
[23] 王旭东，张蕾，曾峰，等.《公路路面基层施工技术细则》实施手册[M].北京：人民交通出版社，2015.
[24] 樊丽然.动荷载下设缓冲层的水泥混凝凝土路面结构响应研究[D].济南：山东交通学院，2023.
基本信息:
DOI：
中图分类号:U416.216
引用信息:
[1]王兵,孙丰哲,董肇明等.温度对设置缓冲层水泥混凝土路面层间结合系数的影响[J].山东交通学院学报,2025,33(02):65-70.
基金信息:
山东省交通科技创新计划项目(2022B17)