城市公路交通建设用复合纤维混凝土综合性能研究  

Research on the Comprehensive Performance of Composite Fiber Concrete in Urban Highway Traffic Construction

作　　者：李鑫 杜晨阳 LI Xin;DU Chen-yang(Xi'an Traffic Engineering Institute,Xi'an 710300,Shaanxi,China)

机构地区：[1]西安交通工程学院,陕西西安710300

出　　处：《合成材料老化与应用》2024年第6期80-82,90,共4页Synthetic Materials Aging and Application

基　　金：陕西省教育厅2023年度一般专项科学研究计划项目(23JK0534);西安交通工程学院2023年度中青年基金项目(2023KY-27)。

摘　　要：为了改善水泥混凝土路面的使用性能,开展了复合纤维改性混凝土试验研究,主要考察了复合纤维掺量对混凝土工作性能、基本力学性能、抗裂性能和抗渗性能的影响。试验结果表明,随着复合纤维掺量的逐渐增大,混凝土的坍落度和轴心抗压强度均呈现出先增大后减小的趋势,而混凝土的最大裂缝宽度、单位面积上总开裂面积和渗水高度等参数则均呈现出先减小后增大的趋势。当复合纤维的掺量为0.2%时,混凝土的坍落度可以达到213mm,轴心抗压强度可以达到最大,而最大裂缝宽度、单位面积上总开裂面积和渗水高度均可以达到最小。研究认为,合适掺量的复合纤维能够有效改善混凝土的综合性能,能够满足城市公路交通建设施工的需求。In order to improve the performance of cement concrete pavement,experimental research on composite fiber modified concrete was carried out,mainly investigating the influence of composite fiber content on the workability,basic mechanical properties,crack resistance,and impermeability of concrete.The experimental results show that as the content of composite fibers gradually increases,the slump and axial compressive strength of concrete show a trend of increasing first and then decreasing,while the maximum crack width,total cracking area per unit area,and water seepage height of concrete all show a trend of decreasing first and then increasing.When the content of composite fibers is 0.2%,the slump of concrete can reach 213 mm,the axial compressive strength can reach its maximum,and the maximum crack width,total cracking area per unit area,and water seepage height can all reach their minimum.The research results indicate that the appropriate amount of composite fibers can effectively improve the comprehensive performance of concrete and meet the needs of urban highway transportation construction.

关 键 词：城市公路交通 混凝土路面 复合纤维 掺量 综合性能 

分 类 号：TU528[建筑科学—建筑技术科学] U416.1[交通运输工程—道路与铁道工程]