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1、西北工业火学硕士学位论文摘要ABSTRACTABSTRACTLightweightaggregateconcrete(LAC)isoneofconcretethatusesartificialornaturallightweightaggregateinsteadofnormalaggregate.Comparedwithnormalconcrete,lightweightaggregateisprovidedwithvirtues:lightweightandhighstrength,heatinsulationandpreservation,fire-resistant,ase
2、ismatic,durability,generaleconomicalandtechnicalefect.Atthesametime,largeoftheindustrialsolidwastesuchadflyashandsilica户，。，isutilizedinthepropertyoftheLACandthemanufactureofthelightweightaggregate.Itishelpfulincomprehensiveutilizationofresourceandenvironmentprotection.TheLAChasthegreatnesssupe
3、riorityintheengineer吻applicationsaslargespanbridgeandh妙buildingandoceanicengineer.Thelightweightaggregateconcreteisabranchofmodernconcretewhichwillbedevelopedinthefuture.Theauthorofthisarticleusedorthogonaltestdesign,arrangedthetestschemescientifically,selectedmaterialcarefully,atlastyieldedan
4、highstrengthlightweightaggregateconcretematerial(HSLACM),whosecompressivestrengthexceeded50Witandqualityunder1950kg/m}mainlybyusing42.5OrdinaryPortlandCement,expanded为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西北工业大学硕士学位论文第一章绪论第一章绪论第一节引言人类进入21世纪，在大规模、大型化、极其苛刻的条件下使用混凝土的机会增多，加之环境保护和节约能源的极高要求，混凝土目前存在的一些问题，如果不能妥善有效地解决，将难以承担其应有的使命，其用途也难以大幅度拓展。为了适应未来建筑向高层、超高层、大跨度发展，以及满足人类对地下和海洋开发的需求，混凝土今后的发展方向是:轻质、
