- 金珊珊1,2,杨金龙1,2,索 智1,2,杨柯南1,2
2020年第6期
摘要
引用本文
摘 要:测试了多组配合比砂浆不同龄期的强度及孔隙结构,引入基于热力学关系的分形模型计算得到了砂浆的孔表面积分形维数。利用统计学方法,探讨了孔隙量参数和孔径分布参数与砂浆抗压强度的定量关系,建立了同时考虑孔隙量和孔径分布的强度预测模型,采用该模型对多组配合比混凝土的抗压强度进行预测。结果表明,预测强度接近室内试验实测强度。Abstract:Thestrengthandporestructureofcementmortarwithdifferentproportionsatdifferentagesweremeasured.Thefractalmodelbasedonthethermodynamicrelationshipwasintroducedtocalculatetheporesurfacefractaldimensionofthecementmortar,whichcouldbeusedasoneofthecharacteristicparametersoftheporesizedistribution.Thequantitativerelationshipsbetweenthecompressivestrengthandtheporevolumeparametersandtheporesizedistributionparameterswerediscussedbystatisticalmethod.Thestrengthpredictionmodelwithconsiderationofbothporevolumeandporesizedistributionwaspresented.Thestrengthofconcretewithdifferentproportionswascalculatedbythestrengthpredictionmodel.Theresultsshowthecalculationstrengthapproachestothetestedstrength.Thestrengthpredictionmodelproposedinthisresearchcanbeappliedintheassessmentofthematerialstrengthofexistingconcretestructure.
金珊珊,杨金龙,索智,等.基于分形理论的水泥砂浆强度预测模型[J].混凝土与水泥制品,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.