- 金珊珊1,2,楊金龍1,2,索 智1,2,楊柯南1,2
2020年第6期
摘要
引用本文
摘?要:測試了多組配合比砂漿不同齡期的強度及孔隙結構,引入基于熱力學關系的分形模型計算得到了砂漿的孔表面積分形維數。利用統計學方法,探討了孔隙量參數和孔徑分布參數與砂漿抗壓強度的定量關系,建立了同時考慮孔隙量和孔徑分布的強度預測模型,采用該模型對多組配合比混凝土的抗壓強度進行預測。結果表明,預測強度接近室內試驗實測強度。Abstract:Thestrengthandporestructureofcementmortarwithdifferentproportionsatdifferentagesweremeasured.Thefractalmodelbasedonthethermodynamicrelationshipwasintroducedtocalculatetheporesurfacefractaldimensionofthecementmortar,whichcouldbeusedasoneofthecharacteristicparametersoftheporesizedistribution.Thequantitativerelationshipsbetweenthecompressivestrengthandtheporevolumeparametersandtheporesizedistributionparameterswerediscussedbystatisticalmethod.Thestrengthpredictionmodelwithconsiderationofbothporevolumeandporesizedistributionwaspresented.Thestrengthofconcretewithdifferentproportionswascalculatedbythestrengthpredictionmodel.Theresultsshowthecalculationstrengthapproachestothetestedstrength.Thestrengthpredictionmodelproposedinthisresearchcanbeappliedintheassessmentofthematerialstrengthofexistingconcretestructure.
金珊珊,楊金龍,索智,等.基于分形理論的水泥砂漿強度預測模型[J].混凝土與水泥制品,2020(6):1-5,12.
JIN S S,YANG J L,SUO Z,et al.The Strength Prediction Model of Cement Mortar Based on Fractal Theory[J].China Concrete and Cement Products,2020(6):1-5,12.