As a key component of a swivel bridge, the spherical hinge is a steel-concrete structure, which is susceptible to moisture damage during waiting time. In this paper, spherical hinge moisture damage prevention is investigated comprehensively from two aspects of impermeable concrete and steel-concrete interface waterproof coating. Three impermeable concretes were prepared and tested by the compressive strength test, splitting tensile test, four-point bending test and the impermeability test. The test results illustrated that addition of cementitious capillary crystalline active masterbatch (CCCAM) and polypropylene fiber (PP) could improve the toughness and brittleness of concrete. The addition of CCCAM was an effective technique for improving the permeability of concrete. However, the incorporation of PP and CCCAM at the same time cannot improve the impermeability of concrete. This may be because the chaotic support structure formed by PP prevents the infiltration and uniform dispersion of CCCAM. A waterproof coating consolidation performance test was proposed to quantify the interface bond strength of waterproof coatings and assess the impact of temperature, moisture and freeze-thawing cycles on consolidation performance of waterproof coatings. The test results showed that temperature had a significant effect on the interface consolidation property of waterproof coatings and the optimal dosage of SBS modified asphalt (SBS), polyurethane (PLT) and unsaturated polyester resin (UPLS) waterproof coating is 1.18kg/m², 0.95kg/m² and 1.15kg/m², respectively. Moreover, it was found that PLS waterproof coating maintained excellent properties in complex environment. This is because PLS has excellent shear strength and rubber characteristics, and it can form a hard–soft–hard transition layer between the concrete and steel, reducing the impact of environmental factors.

中文翻译：

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旋转桥球形铰链结构防潮的研究

球形铰链是旋转桥的关键组成部分，是钢-混凝土结构，在等待期间容易受潮。本文从防渗混凝土和钢-混凝土界面防水涂料两个方面对球形铰链防潮害进行了综合研究。制备了三种不渗透混凝土，并通过抗压强度试验，劈裂拉伸试验，四点弯曲试验和抗渗性试验进行了测试。试验结果表明，添加水泥质毛细管结晶活性母料（CCCAM）和聚丙烯纤维（PP）可以提高混凝土的韧性和脆性。添加CCCAM是提高混凝土渗透性的有效技术。然而，PP和CCCAM的同时使用不能改善混凝土的抗渗性。这可能是因为由PP形成的混沌支撑结构阻止了CCCAM的渗透和均匀分散。提出了防水涂料固结性能测试，以量化防水涂料的界面结合强度，并评估温度，水分和冻融循环对防水涂料固结性能的影响。试验结果表明，温度对防水涂料的界面固结性能有显着影响，SBS改性沥青（SBS），聚氨酯（PLT）和不饱和聚酯树脂（UPLS）防水涂料的最佳用量为1.18kg / m。这可能是因为由PP形成的混沌支撑结构阻止了CCCAM的渗透和均匀分散。提出了防水涂料固结性能测试，以量化防水涂料的界面结合强度，并评估温度，水分和冻融循环对防水涂料固结性能的影响。试验结果表明，温度对防水涂料的界面固结性能有显着影响，SBS改性沥青（SBS），聚氨酯（PLT）和不饱和聚酯树脂（UPLS）防水涂料的最佳用量为1.18kg / m。这可能是因为由PP形成的混沌支撑结构阻止了CCCAM的渗透和均匀分散。提出了防水涂料固结性能测试，以量化防水涂料的界面结合强度，并评估温度，水分和冻融循环对防水涂料固结性能的影响。试验结果表明，温度对防水涂料的界面固结性能有显着影响，SBS改性沥青（SBS），聚氨酯（PLT）和不饱和聚酯树脂（UPLS）防水涂料的最佳用量为1.18kg / m。水分和冻融循环对防水涂料固结性能的影响。试验结果表明，温度对防水涂料的界面固结性能有显着影响，SBS改性沥青（SBS），聚氨酯（PLT）和不饱和聚酯树脂（UPLS）防水涂料的最佳用量为1.18kg / m。水分和冻融循环对防水涂料固结性能的影响。试验结果表明，温度对防水涂料的界面固结性能有显着影响，SBS改性沥青（SBS），聚氨酯（PLT）和不饱和聚酯树脂（UPLS）防水涂料的最佳用量为1.18kg / m。²，分别为0.95kg / m ²和1.15kg / m ²。此外，发现PLS防水涂料在复杂环境中保持优异的性能。这是因为PLS具有出色的剪切强度和橡胶特性，并且可以在混凝土和钢材之间形成硬—软—硬的过渡层，从而减少了环境因素的影响。