工程建设EngineeringConstruction第55卷第2期2023年2月收稿日期:2022-09-16基金项目:山西大同大学研究生教育创新项目(21CX33)作者简介:杨得源(1996—),硕士研究生,从事混凝土力学性能研究。双掺粉煤灰-陶粒泵送混凝土力学性能研究杨得源1a,何晓升2b,武佳瑞1a(山西大同大学a.煤炭工程学院;b.建筑与测绘工程学院,山西大同037003)摘要:为提高粉煤灰和陶粒的利用率,达到节约资源、保护环境的目的,本文通过控制粉煤灰和陶粒的掺量,以密度、坍落度、混凝土抗压强度等参数作对比设计正交试验,对粉煤灰-陶粒双掺混凝土的力学性能进行研究。通过对试验结果进行极差分析,找出影响双掺混凝土的主次因素,作为BP神经网络的输入,预测混凝土的抗压强度,与实际值进行对比分析。结果表明:当粉煤灰掺量为12%,陶粒掺量在36%时,混凝土力学性能最佳,满足泵送要求;实测值和预测值的误差不超过2%,有很高的预测精度。上述结论可作为开发利用粉煤灰-陶粒混凝土的依据。关键词:粉煤灰;陶粒混凝土;泵送混凝土;坍落度;抗压强度;正交试验中图分类号:TU502+.6文献标识码:A文章编号:1673-8993(2023)02-0008-07doi:10.13402/j.gcjs.2023.02.016StudyonmechanicalpropertiesofpumpcretecodopedwithflyashandceramsiteYANGDeyuan1a,HEXiaosheng1b,WUJiarui1a(ShanxiDatongUniversity,a.CoalEngineeringSchool;b.ArchitectureandsurveyingEngineeringSchool,Datong037009,Shanxi,China)Abstract:Inordertoimprovetheutilizationrateofflyashandceramsite,andtosaveresourcesandprotectenvironment,inthispaper,bycontrollingthecontentofflyashandceramsite,theorthogonalexperimentisdesignedtocomparethedensity,slump,concretecompressivestrengthandotherparameters,soastostudythemechanicalpropertiesofflyash-ceramsitecodopedconcrete.Throughtherangeanalysisoftheexperimentalresults,theprimaryandsecondaryfactorsaffectingthecodopedconcretearefoundoutastheinputofBPneuralnetwork,thenthecompressivestrengthofconcreteispredictedandcomparedwiththeactualvalue.Theresultsshowthatwhentheflyashcontentis12%andtheceramsitecontentis36%,themechanicalpropertiesofconcretearethebestandmeetthepumpingrequirements.Theerrorbetweenthemeasuredvalueandthepredictedvalueislessthan2%,sothepredictionaccuracyisveryhigh....