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再生混凝土的SHPB实验及能量耗散分析.docx

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再生混凝土的SHPB实验及能量耗散分析为题目，写不少于1200的论文 Abstract SplitHopkinsonPressureBar(SHPB)testiscommonlyusedtodeterminethemechanicalpropertiesofmaterialsathighstrainrates.Inthisresearch,SHPBexperimentswerecarriedoutonspecimensmadeofrecycledconcrete,commonlyknownasRecycledAggregateConcrete(RAC),andconventionalconcretetocomparetheirmechanicalproperties.TheresultsobtainedfromtheexperimentsshowedthatRAChasalowercompressivestrengthandstress-strainpeakvaluecomparedtoconventionalconcrete.However,itshowedahigherstrainratesensitivity,demonstratingitspotentialasamaterialforapplicationsthatdemandhighenergyabsorptioncapacity. Keywords:SplitHopkinsonPressureBar,RecycledAggregateConcrete,strainratesensitivity,energydissipation 1.Introduction RecycledAggregateConcrete(RAC)isasustainablealternativetoconventionalconcrete,asitismadebyusingrecycledmaterials.Itisshowntohavesimilarmechanicalpropertiestoconventionalconcrete,butwithadditionaladvantages,suchasreducedenvironmentalimpactandcost-effectiveness.ThepropertiesofRAC,particularlyitsmechanicalpropertiesathighstrainrates,havebeenofinteresttoresearchersduetoitspotentialapplicationsinstructuressubjectedtodynamicloads,suchasearthquake-resistantstructures,andblast-resistantstructures. SplitHopkinsonPressureBar(SHPB)testisawell-knownmethodusedtodeterminethedynamicpropertiesofmaterials.Thetestiscarriedoutbycompressingthespecimeninahigh-speedimpactevent.Duringcompression,theincidentwave,transmittedwave,andreflectedwavearerecordedbysensors.Thestrainrateduringcompressionisdeterminedbasedontheimpactvelocityandthelengthofthespecimen.Inthisresearch,SHPBexperimentswerecarriedoutonRACandconventionalconcretetocomparetheirdynamicproperties. 2.ExperimentalMethods 2.1Specimens Specimensusedforthisresearchwerecubeswithdimensionsof100mmx100mmx100mm.RACspecimensweremadebyusingrecycledaggregatesfromoldconcrete,whichwerecrushedandscreened.Therecycledaggregatesaccountedfor50%ofthetotalweightofthemix,andtherestwascomprisedofcement,sand,andwater.Conventionalconcretespecimen