Page 133 - 《水资源与水工程学报》2023年第3期
P. 133

!34 " ! 3 #                       & ' ( ) & * + , -                               Vol.34No.3
               2023 $ 6 %               JournalofWaterResources&WaterEngineering                 Jun.,2023

            DOI:10.11705/j.issn.1672-643X.2023.03.16


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                 ABCDE:TV432 .8   FGHIJ:A    FKLE:1672643X(2023)03012907
                             Developmentandperformanceofabrasionresistant
                               epoxymortarforhighheadgateinsandyrivers


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                         CHENWei,RENKailin,ZHANGYuling,JIANGLing,YANGGuihai,
                                                              2
                                                                            2
                                            WANGZhengzhong,KANGYang
                 (1.ChinaRailwayWaterResourcesandHydropowerPlanningandDesignGroupCo.,Ltd.,Nanchang330029,China;
                   2.CollegeofWaterResourcesandArchitecturalEngineering,NorthwestA&FUniversity,Yangling712100,China)
                 Abstract:Akindofepoxymortarsuitableforerosionresistantandabrasionresistantprotectionofhigh
                 headgateflowsurfaceinsandyriverswasdevelopedforthesafeoperationofhydraulicstructures.Ac
                 cordingtothetheworkingperformanceoftheepoxyresinsystem ,theprimaryformulawasformed,then
                 theorthogonaltestwasusedtostudythesignificanceoftheinfluenceofdifferentfactorsonthecompres
                 sivestrengthandflexuralstrengthoftheepoxymortar ,soastoanalyzetheinfluenceofcement-sandra
                 tioandcementcontentonthemechanicalpropertiesofthemortar.Meanwhile ,theinternalporesizeand
                 distributionofepoxymortarwithdifferentproportionswerestudiedbynuclearmagneticresonanceimaging
                 technology ,andtheperformanceofdifferentproportionsofepoxymortaragainstbedloadabrasionwas
                 testedbyahighspeedunderwatersteelballgrinder.Theresultsshowthatthecement-sandratiohasa
                 significanteffectonthecompressivestrengthandflexuralstrengthofepoxymortar.Withtheincreaseof
                 thecement-sandratio ,thecompressivestrengthandflexuralstrengthofepoxymortarfirstincreaserap
                 idlyandthendecreasetoacertainextent.Whenthequartzsand∶cement∶epoxyresinis5∶1∶3,theep
                 oxymortariseasytomixandhasgoodfluidity.After7daysofcuring ,theinternalporesofthemortar
                 areevenlydistributed,itscompressivestrengthis119.0MPa,flexuralstrengthis42.24MPa,andthe
                 thicknesslossof216hhighspeedunderwatersteelballmethodis0.063mm.Combinedwithdataanaly

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