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首页> 外文期刊>Construction and Building Materials >Performance evaluation of polyurethane/epoxy resin modified asphalt as adhesive layer material for steel-UHPC composite bridge deck pavements
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Performance evaluation of polyurethane/epoxy resin modified asphalt as adhesive layer material for steel-UHPC composite bridge deck pavements

机译：聚氨酯/环氧树脂改性沥青的性能评价为钢-UHPC复合桥甲板路面粘合剂层材料

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Polyurethane/epoxy resin modified asphalt (PEA) has substantial potential in functioning as adhesive layer material for steel-ultra high performance concrete (UHPC) composite bridge deck pavements. In this research, the curing process of PEA was analyzed by Fourier transform infrared spectroscopy (FTIR) and fluorescence microscopy (FM) tests. Furthermore, mechanical and engineering performances of PEA were evaluated and further compared with those of styrene-butadiene-styrene (SBS) modified asphalt by viscosity test, tensile test, pull-out test, and dynamic shear rheometer (DSR) test. Results indicate that during the curing process of PEA, the polyurethane/epoxy resin undergoes a reaction with curing agent to form an interpenetrating polymer network (IPN) structure with a phase transition of polyurethane/epoxy resin from a dispersed phase to a continuous phase. The viscosity of PEA is affected by the asphalt content and temperature. PEA possesses excellent mechanical properties due to the formation of IPN structure and the toughening effect of asphalt. The high-temperature stability of PEA is far better than that of SBS modified asphalt. Additionally, the low-temperature cracking resistance and waterproof performances of PEA can meet the requirements of the adhesive layer well.(c) 2021 Elsevier Ltd. All rights reserved.
机译：聚氨酯/环氧树脂改性沥青（豌豆）具有钢 - 超高性能混凝土（UHPC）复合桥甲板路面的粘合剂层材料的作用。在该研究中，通过傅里叶变换红外光谱（FTIR）和荧光显微镜（FM）测试分析了豌豆的固化过程。此外，通过粘度试验，拉伸试验，拉出试验和动态剪切流变仪（DSR）测试，评估并进一步与苯乙烯 - 丁二烯 - 苯乙烯（SBS）改性沥青的机械和工程性能进行评估。结果表明，在豌豆的固化过程中，聚氨酯/环氧树脂经历与固化剂的反应，以形成具有来自分散相的聚氨酯/环氧树脂的相变的聚合物网络（IPN）结构，从分散相到连续相。豌豆的粘度受到沥青含量和温度的影响。由于IPN结构的形成和沥青的增韧效果，豌豆具有优异的机械性能。豌豆的高温稳定性远远优于SBS改性沥青。此外，豌豆的低温开裂性和防水性能良好的粘合剂层的要求。（c）2021 elestvier有限公司保留所有权利。

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