Page 113 - 《水资源与水工程学报》2025年第2期
P. 113

!36 "!2 #                         & ' ( ) & * + , -                               Vol.36No.2
               2025 $ 4 %               JournalofWaterResources&WaterEngineering                 Apr.,2025

            DOI:10.11705/j.issn.1672-643X.2025.02.13


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                 CDE: ÐÑo;XCT; ¾Jëý; œg; ÈÀÁl; .Pí%
                 FGHIJ:TV431;TU528   KLMNO:A    KPQJ:1672643X(2025)02010909
                   Quantitativemodelforporestructurecharacteristicsandstrengthof

                                ironoretailingsconcretebasedonXCTimages

                                                       1
                                                                                                  1,2
                                                                                       1
                                                                       1
                           1
                                          1
                     LIWei,FANMinghui,LIRunyang,LIUZhenghao,RENWenyuan,LUOTao
                   (1.CollegeofWaterResourcesandArchitecturalEngineering,NorthwestA&FUniversity,Yangling712100,China;
                   2.ShaanxiKeyLaboratoryofSafetyandDurabilityofConcreteStructures,XijingUniversity,Xi’an710123,China)
                 Abstract:Theconsumptionofconcretehasincreasedannuallyduetothedevelopmentofwaterconser
                 vancyengineering ;however,themechanicalpropertiesofconcretearesubjectedtotheporestructure
                 within.BasedonXraycomputedtomography(XCT),thisstudyanalyzedtheinfluenceofdifferentiron
                 oretailingsdosagesontheporestructurefrommultipleperspectives ,suchasporosity,porelocationdis
                 tributionandsizedistribution.Thegreyrelationalanalysisandregressionanalysiswereusedtocategorize
                 theporesintoharmfulporesandlessharmfulpores.Thelinearquantitativemodelwasestablishedtoana
                 lyzetherelationshipbetweenconcretestrengthandporosityofharmful,andlessharmfulpores.There
                 sultsshowedthatthe3Dporosityandaverageporesizegraduallydecreaseswiththeincreaseofironore
                 tailingsdosage.Moreporesscatterintheedgeareathaninthecenterofthespecimens,withporesof150
                 -250 μ mdistributingmostwidelyunderdifferentdosages.Intermsofcompressivestrengthandsplitting
                 tensilestrength,thesurfaceareaboundaryfortheharmfulporesandlessharmfulporesare70and30
                   2
                 mm,respectively.Theproposedquantitativestrength-porestructuremodelintegratestheeffectsofpo
                 rosityandporesizedistribution ,itcanproduceexcellentverificationresultsandpredictthechanging
                 trendofconcretestrength.

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