基于沥青砂浆路用性能的细集料级配  

Research on Fine Aggregate Gradationbased on Asphalt Mortar Road Performance

作　　者：梁庭熹 许新权 谢光宁 LIANG Tingxi;XU Xinquan;XIE Guangning(Guangdong Huiqing Expressway Co.,Ltd.,Guangzhou Guangdong 510623,China;Guangdong Jiaoke Technology R&D Co.,Ltd.,Guangzhou Guangdong 510550,China;Guangdong Hualu Transport Technology Co.,Ltd.,Guangzhou Guangdong 510420,China)

机构地区：[1]广东惠清高速公路有限公司,广东广州510623 [2]广东交科技术研发有限公司,广东广州510550 [3]广东华路交通科技有限公司,广东广州510420

出　　处：《广东公路交通》2024年第2期21-26,共6页Guangdong Highway Communications

摘　　要：为了优化细集料级配,采用变I法计算多种细集料级配。借助贝雷法检验级配的嵌挤效果。成型沥青混合料试件,分别进行单轴贯入试验和低温劈裂试验。试验结果表明:随着I值增大,砂浆级配变细,抗剪能力与低温抗拉能力均先增大、后减少。考虑在提高沥青砂浆抗剪能力的同时不至于过度削弱其低温抗裂性,建议适宜的I值为0.68,此时沥青砂浆的抗剪能力与抗裂能力均较优。In order to optimize the gradation of fine aggregate,the variable I method has been used to calculate various fine aggregate gradations.The embedding effect of the gradation has been tested using the Bailey method,and asphalt mixture specimens have been formed.Uni-axial penetration tests and low-temperature splitting tests have been conducted respectively.The experimental results have shown that as the I value increases,the mortar grading becomes finer,the shear resistance and low-temperature tensile strength first increase and then decrease.Considering improving the shear resistance of asphalt mortar while not excessively weakening its low-temperature crack resistance,it has been recommended to have an appropriate I value of 0.68,at which,the shear and crack resistance of asphalt mortar are relatively superior.

关 键 词：沥青砂浆 路用性能 细集料 级配 

分 类 号：U414[交通运输工程—道路与铁道工程]