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干湿循环对碱激发材料固化细铁尾矿砂强度特性的影响分析.docx

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干湿循环对碱激发材料固化细铁尾矿砂强度特性的影响分析 Title:AnalysisoftheInfluenceofWet-DryCyclingontheSolidificationandStrengthCharacteristicsofAlkali-ActivatedMaterialsforStabilizationofFineIronTailings Abstract: Irontailings,abyproductoftheironoreminingindustry,posesignificantenvironmentalandsafetychallengesduetotheirfineparticlesizeandpotentialforleachingharmfulelements.Alkali-activatedmaterials(AAMs)haveemergedasapromisingsolutionforstabilizingandsolidifyingthesetailings,reducingtheirenvironmentalimpact,andimprovingtheirmechanicalproperties.However,theperformanceofAAMsisaffectedbyvariousfactors,includingcuringconditions.Thisstudyaimstoinvestigatetheinfluenceofwet-drycyclingonthesolidificationandstrengthcharacteristicsofalkali-activatedmaterialsforthestabilizationoffineirontailings. Introduction: Theironoreminingindustrygeneratesvastamountsoftailings,whicharetypicallystoredintailingsdams.However,thesedamsposeasignificantriskoffailure,leadingtocatastrophicenvironmentalandsafetyconsequences.Tomitigatetheserisks,approachessuchasalkali-activatedmaterialshavebeenexplored.Alkaliactivationinvolvestheadditionofalkalineactivators,suchassodiumhydroxideorsodiumsilicate,toinduceachemicalreactionthatsolidifiesandstrengthensthetailings.Wet-drycycling,whichsimulatesthenaturalexposuretoalternatingwetanddryconditions,islikelytoinfluencetheperformanceofAAMs.Understandingtheeffectsofwet-drycyclingonthesolidificationandstrengthcharacteristicsiscrucialforoptimizingthestabilizationprocessandensuringthelong-termdurabilityofthestabilizedtailings. Methodology: Thestudyinvolveslaboratoryexperimentsandcharacterizationtechniquestoanalyzetheimpactofwet-drycyclingonAAMsforstabilizingfineirontailings.Thefollowingmethodologywillbefollowed: 1.Collectionandpreparationoffineirontailingssamples:Arepresentativesampleoffineirontailingswillbecollectedfromaminesite.Thesampleswillthenbeprocessedtoremoveimpuritiesanddriedtoaconstantweight. 2.Preparationofalkali-activatedmaterial:Variousmixdesignswillbeformulated,varyingthecontent