2023年2月材料开发与应用文章编号:1003-1545(2023)01-0081-04海工混凝土结构用环氧树脂固化体系性能研究徐姗姗1,白师豪1,马志超1,陈程2(1.中国船舶集团有限公司第七二五研究所厦门材料研究院,福建厦门361101;2.福建科胜加固材料有限公司,福建厦门361027)摘要:随着我国海洋经济的飞速发展,对海工混凝土结构腐蚀修复补强技术的需求日益增大。现有地面以上混凝土结构修复技术非常成熟,环氧树脂固化体系对于海洋环境的适用性是其应用环境由地面拓展到海工领域的关键。本研究遴选出7种市售固化剂,通过固化剂及树脂体系黏度、水下凝胶时间对其进行初步筛选,并研究了固化环境、固化时间、固化剂用量对树脂体系的压缩性能影响。最终,通过对拉伸性能、黏结性能的研究,得到海水环境下综合性能表现最优的为810固化剂。结果表明:当环氧树脂E51与固化剂810质量比为2∶1时,在海水中养护7d,水下凝胶时间为65min,压缩强度为101.59MPa,拉伸强度为32.59MPa,断裂伸长率为4.09%,黏结强度为3.52MPa。关键词:海工混凝土结构;环氧树脂;固化;性能中图分类号:TQ177.6文献标识码:AStudyonPropertiesofEpoxyResinCuringSystemforMarineConcreteStructuresXUShanshan1,BAIShihao1,MAZhichao1,CHENCheng2(1.XiamenAdvancedMaterialsAcademyofLuoyangShipMaterialResearchInstitute,Xiamen361101,China;2.FujianKeshengReinforcementMaterialCo.,Ltd.,Xiamen361027,China)Abstract:Withtherapiddevelopmentofmarineeconomy,thedemandformarineconcretestructurecorrosionrepairingandre-inforcementtechnologyisincreasing.Theexistingrepairtechnologyofconcretestructuresabovegroundlevelisverymature.Theapplicabilityofepoxyresincuringsystemtothemarineenvironmentisthekeyissuetoexpanditsapplicationenvironmentfromthegroundsurfaceengineeringtotheoffshoreengineering.Inthispaper,7kindsofcommercialcuringagentsareselectedandscreenedbycuringagent,viscosityofresinsystemandunderwatergeltime.Theeffectsofcuringenvironmentandtimeanddos-ageofcuringagentoncompressionpropertiesoftheresinsystemarestudied.Finally,throughthestudyoftensilepropertiesandbondproperties,itisconcludedthatthe810curingagenthasthebestcomprehensiveperformanceinseawaterenvironment.Theresultsshowthatwhenthemassrat...