长沙理工大学学报(自然科学版)
用于装配式柔性路面的可卷曲环氧树脂混合料
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(长沙理工大学 交通学院 ,湖南 长沙 410114)

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通讯作者:

赵锋军(1977—)(ORCID:0009-0002-0945-5266),男,副教授,主要从事桥面沥青铺装工程等方面的研究。E-mail:zhaofengjunisme@163.com

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U414

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Curable epoxy resin mixture for prefabricated flexible pavement
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(School of Transportation , Changsha University of Science & Technology , Changsha 410114, China)

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    摘要:

    【目的】为解决沥青路面现场施工受自然因素影响大、对环境有污染、施工时间长等问题,有必要研发一种低碳环保、质量可控的可卷曲环氧树脂混合料 (curable epoxy resin mixture,CERM)。【方法】通过拉伸试验的变形指标控制环氧树脂与增韧剂的比例,根据黏度试验的施工和易性要求确定稀释剂质量,并结合已有研究确定环氧树脂的各组分比例。以超薄磨耗层的级配为基础,通过小梁弯曲试验的极限应变控制混合料的变形要求,根据劈裂试验的劈裂强度控制混合料的强度要求确定环氧树脂结合料在 CERM中的最佳质量分数。采用车辙试验、冻融劈裂试验和铺砂法验证 CERM的关键性能是否满足公路工程的要求,并在试验过程中控制混合料的配比和成型条件,以确保结果的可比性。【结果】通过正交试验确定的最佳工艺参数分别为:增韧剂与环氧树脂的质量比为 4∶1,稀释剂的最佳质量分数为 14%,环氧树脂的最佳质量分数 (以胶浆质量计)为15%。此时,CERM的弯曲挠度达 4.9 mm。在高温抗变形能力方面:CERM的动稳定度达 12 458次/mm;在环氧树脂结合料的质量分数为 12%~15%时,CERM的动稳定度的波动幅度大于 18%,满足了高温地区的重载交通需求。在水稳定性方面:CERM的劈裂残留强度比达 89.69%,且在环氧树脂结合料的质量分 数为15%时,CERM的劈裂强度达 2.75 MPa。在抗滑耐久性方面:构造深度(texture depth,TD)的值(ETD=0.62 mm)满足《公路沥青路面施工技术规范 》 (JTG F 40—2004) (摘要后续简称 “ 《规范》 ” )中的要求 (ETD ≥ 0.55 mm),摆式摩擦系数(British pendulum number,BPN)的值(EBPN=0.56)满足《规范》中的要求 (EBPN ≥0.45)。尽管环氧树脂的填充导致 CERM的ETD较OGFC -7型沥青混合料的 ETD(0.92 mm)小,但仍可通过优化骨料级配实现抗滑性能与耐久性的平衡。【结论】研发的 CERM满足《规范》中的强度、稳定性、抗滑等要求,可为装配式柔性路面的工厂生产、现场施工提供基础。

    Abstract:

    [Purposes ] To address the issues associated with asphalt pavement construction,such as significant susceptibility to natural factors,environmental pollution,and prolonged construction periods,a low -carbon,environmentally friendly,and quality -controllable curable epoxy resin mixture (CERM) was developed.[Methods] The ratio of epoxy resin and toughening agent was controlled through the deformation index of the tensile test,and the dosage of the diluent was determined according to the construction workability requirements of the viscosity test.According to the existing research,the ratio of each component in the epoxy resin was determined.Based on the gradation of the ultra -thin wearing course,the deformation requirements of the mixture were controlled through the ultimate strain of the bending test of small beam.Based on the strength requirements of the mixture through the splitting strength of the splitting test,the optimal dosage of the epoxy resin binder in CERM was determined.The rutting test,freeze -thaw splitting test,and sand patch method were adopted to verify whether the key performance of CERM meets the needs of highway engineering.During the test,the mixture ratio and forming conditions were controlled to ensure the comparability of the results.[Findings] Orthogonal tests determine the optimal formulation of CERM as follows:a toughening agent/epoxy resin mass ratio of 4∶1.The optimal dosage of the diluent is 14% (by mass fraction ),and that of the epoxy resin binder is 15% (measured by the mass of the rubber cement ).Under these conditions,CERM exhibits a flexural deflection of 4.9 mm.In terms of high -temperature deformation resistance,the dynamic stability of CERM reaches 12 458 times/mm;when the mass fraction of the epoxy resin binder is 12%-15%,the fluctuation range of CERM ’s dynamic stability is greater than 18%,meeting the heavy -load traffic requirements in high -temperature areas.In terms of water stability,the splitting residual rate of CERM is 89.69%,and when the mass fraction of the epoxy resin binder is 15%,the splitting strength of CERM reaches 2.75 MPa.In terms of skid resistance and durability,the value of texture depth (TD) is ETD=0.62 mm,which meets the requirement in the Technical Specification for Construction of Highway Asphalt Pavements (JTG F 40—2004) (subsequently referred to as the Specification ) that ETD ≥ 0.55 mm.The value of British pendulum number (BPN) is EBPN = 0.56,which also meets the requirement in the Specification that EBPN ≥ 0.45.Although the filling of epoxy resin results in a lower ETD for CERM compared to the one for the OGFC -7 type asphalt mixture (0.92 mm),the balance between skid resistance performance and durability can still be achieved by optimizing the aggregate gradation.[Conclusions ] The CERM meets the requirements of strength,stability,and skid resistance performance specified in the Specification and can provide a foundation for the factory production and on -site construction of prefabricated flexible pavement.

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赵锋军,陈鑫波,乐洋.用于装配式柔性路面的可卷曲环氧树脂混合料[J].长沙理工大学学报(自然科学版),2025,22(5):54-62.
ZHAO Fengjun, CHEN Xinbo, LE Yang. Curable epoxy resin mixture for prefabricated flexible pavement[J]. Journal of Changsha University of Science & Technology (Natural Science),2025,22(5):54-62.

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  • 收稿日期:2025-05-10
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  • 在线发布日期: 2025-11-27
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