簡(jiǎn)介:EFFECTOFTEMPERATUREANDAGINGONTHEMECHANICALPROPERTIESOFCONCRETEPARTIEXPERIMENTALRESULTSJINKEUNKIMA,SANGHUNHANB,,YOUNGCHULSONGCADEPARTMENTOFCIVILENGINEERING,KOREAADVANCEDINSTITUTEOFSCIENCEANDTECHNOLOGY,3731KUSONG,YUSONG,TAEJON305701,REPUBLICOFKOREABCOASTALANDHARBOURENGINEERINGLABORATORY,KOREAOCEANRESEARCHANDDEVELOPMENTINSTITUTE,1270SADONG,ANSAN,KYUNGGIDO425744,REPUBLICOFKOREACCIVILANDARCHITECTURALENGINEERINGGROUP,KOREAELECTRICRESEARCHINSTITUTE,10316MUNJI,YUSONG,TAEJON305380,REPUBLICOFKOREARECEIVED12MARCH2001ACCEPTED17JANUARY2002ABSTRACTTHISPAPERREPORTSTHERESULTSOFCURINGTEMPERATUREANDAGINGONTHESTRENGTHANDELASTICMODULUSANDTHEPARTIIPAPERSUGGESTSAPREDICTIONMODELBASEDONTHESEEXPERIMENTALRESULTSTESTSOF480CYLINDERSMADEOFTYPESI,V,ANDVCEMENTFLYASHCONCRETES,CUREDINISOTHERMALCONDITIONSOF10,23,35,AND50?CANDTESTEDATTHEAGESOF1,3,7,AND28DAYSAREREPORTEDACCORDINGTOTHEEXPERIMENTALRESULTS,CONCRETESSUBJECTEDTOHIGHTEMPERATURESATEARLYAGESATTAINHIGHEREARLYAGECOMPRESSIVEANDSPLITTINGTENSILESTRENGTHSBUTLOWERLATERAGECOMPRESSIVEANDSPLITTINGTENSILESTRENGTHSTHANCONCRETESSUBJECTEDTONORMALTEMPERATUREEVENTHOUGHTHEELASTICMODULUSHASTHESAMETENDENCY,THEVARIATIONOFELASTICMODULUSWITHCURINGTEMPERATUREISNOTSOOBVIOUSASCOMPRESSIVESTRENGTHBASEDONTHEEXPERIMENTALRESULT,THERELATIONSHIPSAMONGCOMPRESSIVESTRENGTH,ELASTICMODULUS,ANDSPLITTINGTENSILESTRENGTHAREANALYZED,CONSIDERINGTHEEFFECTSOFCURINGTEMPERATURE,AGING,ANDCEMENTTYPED2002ELSEVIERSCIENCELTDALLRIGHTSRESERVEDKEYWORDSTEMPERATUREAGINGCOMPRESSIVESTRENGTHELASTICMODULISPLITTINGTENSILESTRENGTH1INTRODUCTIONTEMPERATUREVARIATIONCAUSEDBYTHEHEATOFHYDRATIONINMASSCONCRETEORTHECHANGEOFEXTERNALENVIRONMENTHASALARGEINFLUENCEONTHEMECHANICALPROPERTIESOFEARLYAGECONCRETEMECHANICALPROPERTIESSUCHASCOMPRESSIVESTRENGTH,ELASTICMODULUS,ANDSPLITTINGTENSILESTRENGTHAREFACTORSTOBECONSIDEREDINTHEDESIGNANDCONSTRUCTIONOFCONCRETESTRUCTURESSPECIFICALLY,EVALUATIONOFTHETHERMALCRACKINGOFMASSCONCRETESTRUCTUREREQUIRESESTIMATIONOFTHEELASTICMODULUSANDTENSILESTRENGTHOFEARLYAGECONCRETEWITHTEMPERATURETHEREFORE,EFFECTSOFTEMPERATUREANDAGINGONTHEMECHANICALPROPERTIESMUSTBESTUDIEDANDQUANTIFIED1–6MOSTOFTHECODERELATIONSHIPSBETWEENCOMPRESSIVESTRENGTHANDELASTICMODULUSORSPLITTINGTENSILESTRENGTHWEREDEVELOPEDBASEDONEXPERIMENTALDATAONCONCRETECUREDATNORMALTEMPERATUREANDTESTEDAT28DAYSTOAPPLYTHERELATIONSHIPTOCONCRETESCUREDATOTHERCURINGTEMPERATURESORTESTEDATDIFFERENTAGES,ITISNECESSARYTOEXAMINETHEVALIDITYOFTHERELATIONSHIPSATDIFFERENTTEMPERATURESANDAGES7–11THEOBJECTIVESOFTHISSTUDYARETOPRODUCEADATAINVENTORYOFTHEEARLYAGEMECHANICALPROPERTIESOFCONCRETEWITHTEMPERATUREANDTOINVESTIGATETHEVALIDITYOFTHERELATIONSHIPSBETWEENCOMPRESSIVESTRENGTHANDELASTICMODULUSORSPLITTINGTENSILESTRENGTHACCORDINGTOTEMPERATUREANDAGING2EXPERIMENTALPROGRAM21EXPERIMENTALVARIABLESEXPERIMENTALVARIABLESCONSISTEDOFCEMENTTYPE,WATER–BINDERRATIO,ANDCURINGTEMPERATUREDETAILSAREPROVIDEDINTABLE100088846/02/–SEEFRONTMATTERD2002ELSEVIERSCIENCELTDALLRIGHTSRESERVEDPIIS0008884602007445CORRESPONDINGAUTHORTEL82314006345FAX82314085823EMAILADDRESSSHHANKORDIREKRSHHANCEMENTANDCONCRETERESEARCH3220021087–1094OFTYPEVCEMENTCONCRETESISNOTSOOBVIOUS,DUETOTHEDIFFERENCEINTHEHYDRATIONRATEWITHCEMENTTYPEBECAUSETHEHYDRATIONRATEOFTYPEVCEMENTCONCRETEISSLOWERTHANTHATOFTYPEICEMENTCONCRETE,THECROSSOVEREFFECTOFTYPEVCEMENTCONCRETEISDELAYEDTHEREFORE,THECROSSOVEREFFECTOFTYPEVCEMENTCONCRETEATTESTINGAGESISNOTSOOBVIOUSASTYPEICEMENTCONCRETETABLES6AND7GIVETHEEXPERIMENTALRESULTSFORTYPEVCEMENTANDTYPEVCEMENTFLYASHTABLE4BASICMIXTUREPROPORTIONSUNITWEIGHTKG/M3BINDERBADMIXTURECEMENTTYPEWATER–BINDERRATIOW/BSAND–AGGREGATERATIOS/AWATERWCEMENTCFLYASHFSANDSGRAVELGAEAGENTB?SUPERPLASTICIZERB?TYPESIANDV040039181452–630989000505TYPESIANDV050042181362–707989000505TYPEVFLYASH04003818138568608989000505FIG1EXPERIMENTALCOMPRESSIVESTRENGTHANDELASTICMODULUSJKKIMETAL/CEMENTANDCONCRETERESEARCH3220021087–10941089
下載積分: 10 賞幣
上傳時(shí)間:2024-03-14
頁數(shù): 9
大?。?0.4(MB)
子文件數(shù):