海上水泥基灌浆料抗海水侵蚀性能研究  

Research on Corrosion Resistance to Seawater of Offshore Cement-based Grouting Materials

作　　者：王小萍 朱嵘华 卢望舒 WANG Xiaoping;ZHU Ronghua;LU Wangshu(Yangjiang Offshore Wind Power Laboratory;Ocean College,Zhejiang University)

机构地区：[1]阳江海上风电实验室 [2]浙江大学海洋学院

出　　处：《广东建材》2024年第5期1-3,共3页Guangdong Building Materials

基　　金：广东省科技专项资金和阳江市科技专项资金项目(SDZX2021025).

摘　　要：基于水泥-硅灰-矿粉三元胶凝体系,在超低水胶比条件下制备超高性能水泥基灌浆料(UHPCG),并采用长期浸泡法,分析其抗折强度和抗压强度的经时变化,分析其腐蚀系数F1和腐蚀系数F2的经时变化,研究其抗海水侵蚀性能。结果表明,在天然海水中浸泡至180d,UHPCG外观完好无损,其抗折强度和抗压强度仍有一定程度的提高,其腐蚀系数F1和腐蚀系数F2仍保持在1以上,远高于未发生侵蚀破坏的规定限值,表现出很强的抗海水侵蚀能力,可用于海上工程。超低水胶比、整体颗粒细化和火山灰效应的协同作用使UHPCG具有优异的抗海水侵蚀性能。Based on cement-silica fume-mineral powder ternary gelling system,ultra-high performance cement-based grouting materials(UHPCG)with ultra-low water-to-binder(W/B)ratio was prepared,and the corrosion resistance to seawater was investigated through the analysis of changes in flexural and compressive strength over time and the analysis of changes in corrosion coefficient F1 and corrosion coefficient F2 over time by long-term immersion method.The results showe that after soaking in natural seawater for 180 days,the appearance of UHPCG was intact,and its flexural and compressive strength still had a certain degree of improvement,and its corrosion coefficient F1 and corrosion coefficient F2 remained above 1,far higher than the specified limit value for no corrosion damage,demonstrating strong corrosion resistance to seawater and can be used in offshore engineering.The synergistic effect of ultra-low W/B ratio,overall particle refinement and volcanic ash effect made UHPCG get excellent corrosion resistance to seawater.

关 键 词：超低水胶比 UHPCG 抗海水侵蚀性能 腐蚀系数 海上工程 

分 类 号：P752[天文地球—海洋科学]