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1、西北工業(yè)火學碩士學位論文摘要ABSTRACTABSTRACTLightweightaggregateconcrete(LAC)isoneofconcretethatusesartificialornaturallightweightaggregateinsteadofnormalaggregate.Comparedwithnormalconcrete,lightweightaggregateisprovidedwithvirtues:lightweightandhighstrength,heatinsulationandpreservation,fire-resistant,ase
2、ismatic,durability,generaleconomicalandtechnicalefect.Atthesametime,largeoftheindustrialsolidwastesuchadflyashandsilica戶，。，isutilizedinthepropertyoftheLACandthemanufactureofthelightweightaggregate.Itishelpfulincomprehensiveutilizationofresourceandenvironmentprotection.TheLAChasthegreatnesssupe
3、riorityintheengineer吻applicationsaslargespanbridgeandh妙buildingandoceanicengineer.Thelightweightaggregateconcreteisabranchofmodernconcretewhichwillbedevelopedinthefuture.Theauthorofthisarticleusedorthogonaltestdesign,arrangedthetestschemescientifically,selectedmaterialcarefully,atlastyieldedan
4、highstrengthlightweightaggregateconcretematerial(HSLACM),whosecompressivestrengthexceeded50Witandqualityunder1950kg/m}mainlybyusing42.5OrdinaryPortlandCement,expanded為ashaggregate,silicafume,superplasticizersandsoon.Thisarticlestatesthetechnicalwaytoproduceh砂strengthlightweightaggregatemateria
5、l,specifiestheperformanceofcomposingmaterialsindetailandtheirinfluenceuponhighstrengthlightwe妙taggregatematerial.Accordingtoanalyzingexperimentdataandthecomprehensive-equilibrationtheory,themastsuitablemixdesignwasgained,andanexperienceexpressionaboutmaterialperformanceandcementheaterratiowasf
6、ound.Atthesametime,theperformanceofLACisanalyzedbylessdataandneuralnetworks.ItshowsthattheartificialneuralnetworkcanbeusedasanewapproachtopredicttheperformanceofSCCanditwillbehelpfulinproportioningtheSCCmixturesinthenearfutureKeywords:lightweightaggregateconcrete,expandedflyashaggregate,silica
7、fume,orthogonaltest,superplasticizers,neuralnetwork西北工業(yè)大學碩士學位論文第一章緒論第一章緒論第一節(jié)引言人類進入21世紀，在大規(guī)模、大型化、極其苛刻的條件下使用混凝土的機會增多，加之環(huán)境保護和節(jié)約能源的極高要求，混凝土目前存在的一些問題，如果不能妥善有效地解決，將難以承擔其應有的使命，其用途也難以大幅度拓展。為了適應未來建筑向高層、超高層、大跨度發(fā)展，以及滿足人類對地下和海洋開發(fā)的需求，混凝土今后的發(fā)展方向是:輕質(zhì)、
