高速公路橡胶颗粒复合改性沥青路面耐久性试验研究  

Research on Durability Test of Rubber Particle Composite Modified Asphalt Pavement on Highways

作　　者：门雪峰 MEN Xuefeng(Haiwei Engineering Construction Co.,Ltd.of China Communications First Highway Engineering Co.,Ltd.,Beijing 101119,China)

机构地区：[1]中交一公局海威工程建设有限公司,北京101119

出　　处：《北方建筑》2024年第6期41-46,共6页Northern Architecture

摘　　要：为了保障橡胶颗粒复合改性沥青能够在路面施工中得到合理应用,提出高速公路橡胶颗粒复合改性沥青路面耐久性试验研究。本文以某高速公路路面施工工程为基础,从性能角度对橡胶颗粒复合改性沥青原料进行准备后,分别制备了橡胶颗粒含量为0%,10%和20%的复合改性沥青,开展100 m的路面耐久性试验。测试结果表明,10%使用比例的橡胶颗粒复合改性沥青的双对数拟合曲线参数具有较大的K值和较小的n值,具有更好的抗疲劳性能。劈裂抗拉强度达到5 MPa,破坏劲度模量为2500 MPa,破坏劲度模量达到了3600 MPa。相对于掺入0%的试件,掺入10%的试件残留稳定度提升约12.14%。当混合比增加到20%时,残留稳定度又下降了6.06%,表明掺入10%时,水稳定性能较优。最终得出,10%比例的橡胶颗粒复合改性沥青耐久性最好,能够确保路面质量和安全性。In order to ensure the reasonable application of rubber particle composite modified asphalt in pavement construction,a durability test study on highway rubber particle composite modified asphalt pavement is proposed.In this paper,based on a certain highway pavement construction project,the raw materials of rubber particle composite modified asphalt are prepared from a performance perspective,and composite modified asphalt with rubber particle content of 0%,10%,and 20% are prepared,and a 100 m pavement durability test is carried out.The test results show that the double logarithmic fitting curve parameters of rubber particle composite modified asphalt with a 10% usage ratio have larger K values and smaller n values,indicating better fatigue resistance.The splitting tensile strength reached 5 MPa,and the failure stiffness modulus was 2500 MPa,and the breaking tensile strain is 3600 MPa.The residual stability of the specimen with 10% addition is improved by about 12.14% compared to the specimen with 0% addition.When the mixing ratio increased to 20%,the residual stability decreased by 6.06%,indicating that the water stability performance was better when 10% was added.Ultimately,it is concluded that a 10%proportion of rubber particle composite modified asphalt has the best durability and can ensure road quality and safety.

关 键 词：橡胶颗粒复合改性沥青 路面耐久性 动态弯沉测试 低温性能测试 摩擦系数测试 渗水性能测试 

分 类 号：TU571[建筑科学—建筑技术科学]