钢桥面聚酯型聚氨酯混凝土路用性能试验  

Experiment on Road Performance of Polyester Polyurethane Concrete for Steel Bridge Deck

作　　者：徐斌 牛石磊 王仁贵[3] 王佐才[2] 范龙 罗扣[4] XU Bin;NIU Shilei;WANG Rengui;WANG Zuocai;FAN Long;LUO Kou(Ningbo Roaby Technology Industrial Group Co,Ltd,Ningbo 315800,China;College of Civil Engineering,Hefei University of Technology,Hefei 230009,China;CCCC Highway Consultants Co,Ltd,Beijing 100010,China;China Railway Major Bridge Reconnaissance&Design Institute Co,Ltd,Wuhan 430056,China)

机构地区：[1]宁波路宝科技实业集团有限公司,浙江宁波315800 [2]合肥工业大学土木与水利工程学院,安徽合肥230009 [3]中交公路规划设计院有限公司,北京100010 [4]中铁大桥勘测设计院集团有限公司,湖北武汉430056

出　　处：《土木工程与管理学报》2023年第6期9-14,共6页Journal of Civil Engineering and Management

基　　金：国家自然科学基金(52278301,51922036);中国中铁股份有限公司科技研究开发计划项目(2020-重大-01)。

摘　　要：本文针对聚酯型聚氨酯混凝土(PPUC)作为钢桥面铺装材料的路用性能开展试验研究。通过室内力学性能试验、车辙试验、低温三点弯曲试验和冻融劈裂试验,研究PPUC的基本力学性能、高温稳定性、低温抗裂性和水稳定性,并与常见的钢桥面铺装材料进行对比分析。试验结果表明:PPUC的抗压、抗拉和抗弯拉强度分别为75.3,8.4,22.4 MPa,均大于C30水泥混凝土的力学性能指标;PPUC在60℃下的动稳定度为63000次/mm,远大于沥青玛蹄脂混凝土(SMAC)和环氧沥青混凝土(EAC),并且在80℃高温下,PPUC的动稳定度仅下降了19%;在-10℃下,PPUC的低温抗弯性能明显优于EAC和SMAC;PPUC冻融前后的劈裂强度分别为7.85,7.30 MPa,均大于EAC,SMAC的劈裂强度,且PPUC的劈裂强度比为93%。In this paper,the experimental study was conducted to investigate the road performance of polyester polyurethane concrete(PPUC)as steel bridge deck paving material.The basic mechanical properties,high-temperature stability,low-temperature cracking resistance and water stability of PPUC were investigated by mechanical properties test,wheel tracking test,low-temperature three-point bending test and freeze-thaw splitting test.In addition,the results were compared with common steel deck paving materials.The test results show that the compressive,tensile and flexural strength of PPUC are 75.3,8.4 and 22.4 MPa respectively,which are greater than those of C30 cement concrete.The dynamic stability of PPUC is 63000 times/mm at 60℃,which is much higher than that of SMAC and EAC.At 80℃,the dynamic stability of PPUC decreases by only 19%.At-10℃,the low-temperature bending resistance of PPUC are higher than those of EAC and SMAC,which indicates that PPUC has better low-temperature stability.The splitting strength of PPUC before and after freezing-thawing is 7.85 MPa and 7.30 MPa respectively,which are higher than those of EAC and SMAC.The splitting strength ratio of PPUC is 93%,which indicates that PPUC has good water stability.

关 键 词：钢桥面铺装 聚酯型聚氨酯混凝土 路用性能 力学性能 耐久性能 

分 类 号：TU502[建筑科学—建筑技术科学] U443.33[建筑科学—桥梁与隧道工程]