瓯江大桥混凝土回弹法专用测强曲线研究-刘汉勇-赵尚传-王建生

48120151CHINACIVILENGINEEＲINGJOUＲNALVol．48Jan．No．120152012H242013-11-1412131．1000882．1000843．454000ZC3-AH450。35%、50%C801。。U446．3A1000-131X201501-0041-08StudyonspecialstrengthcurveofreboundmethodforconcreteevaluationofOujiangＲiverBridgeLiuHanyong12ZhaoShangchuan1WangJiansheng31．ＲesearchInstituteofHighwayoftheMinistryofTransportBeijing100088China2．TsinghuaUniversityBeijing100084China3．HenanPolytechnicUniversityJiaozuo454000ChinaAbstractAseriesofexperimentswerecarriedouttoinvestigatetheeffectsofmixingquantitiesadmixturemixingwayssingle-mixedanddouble-mixedandcarbonizeddepthinconcreteontherelationshipofconcretereboundvaluesandcompressivestrength．MoreoverthespecialconcretestrengthcurvesforOujiangＲiverBridgeareestablishedbasedonthetestresultswithZC3-AnormalreboundinstrumentandH450high-strengthreboundinstrumentrespectively．Theexperimentalresultsindicatethatmixingquantitiesandmixingwayssingle-mixedanddouble-mixedofadmixtureshavenoinfluenceontherelationshipofconcretereboundvaluesandcompressivestrengthwhenflyashcontentislessthan35%andgroundslagcontentislessthan50%．ThestrengthcurveequationwithoutconsiderationofcarbonizeddepthcanbeusedtoevaluatetheconcretestrengthofconcretebelowgradeC80andin1-yearconcreteage．Finallythefieldtestresultsshowthattheestablishedspecialstrengthcurvescanbeusedasbasisforthenon-destructivetestofconcretestrengthinOujiangＲiverBridge．KeywordsOujian[e-mail]。、、、、、1。《》。《》JGJ/T23—2011210．0MPa～60．0MPa。C50C60·42·2015C70、C80。。3-5。、。《》JGJ/T23—2011“。、、。”84+200+84m=368m。C60C60《》JGJ/T23—2011。、。11．1ZC3-A2．207JH450GHT4504．50JC50。300t。1．2、、、。1。1Table1ＲawmaterialsforconcreteP．II52．55～25mmIPC1．3《》JGJ/T23—2011E。、C35、C40、C50、C60C705C40、C50、C60、C70C805C60C5015%、25%35%15%、35%50%9150mm1530。12。12Fig．1PreparationoftestspecimensFig．2Testspecimenscuring481··43·1．47d、14d、28d、60d、90d、180d365d、。60～100kN83。1633100．1。4。0．1MPa。1%30．25mm30．5mm。3Fig．3Ｒeboundpointlayoutdiagram4Fig．4Ｒeboundingtest22．12．1．1315%、25%35%5。535%ZC3-AH4503。35%。aZC3-AbH4505Fig．5Ｒelationshipofreboundvalueandcompressivestrengthofconcretewithflyash2．1．2315%、35%50%·44·20156。6a50%ZC3-A3。50%ZC3-A。6bH4503。50%H450。aZC3-AbH4506Fig．6Ｒelationshipofreboundvalueandcompressivestrengthofconcretewithgroundslag2．1．3、37。7aZC3-A3。ZC3-A。7bH4503。H450。aZC3-AbH4507Fig．7Ｒelationshipofreboundvalueandcompressivestrengthofconcrete2．22．1481··45·ZC3-A。ZC3-A。12．0mm。62．0mm。。、、42。242δerδ≤±12．0%er≤±14．0%。fccu=42．27+2．37Ｒm1fccuＲm。248202．0mm2Table2ComparisonoftheregressionequationＲ2δ%er%fccu=－42．27+2．37Ｒm0．750057．579．50fccu=0．102Ｒ1．692m0．747377．599．62fccu=－58．45+3．12Ｒm－0．009Ｒ2m0．750017．549．39fccu=－903．76+214．05lnＲm+47．190．749847．599．56abcd8Fig．8Ｒegressioncurves·46·20158a。8a。。29fccu=0．19Ｒ1．53m10－0．01dm2fccuＲmdm。δ8．91%er11．41%δerδ≤±12．0%er≤±14．0%。2111。9Fig．9Ｒegressionsurface2．3C50H450。7。310。32δerfccu=－96．11+4．51Ｒm2－0．029Ｒ2m23fccuＲm2。ab10Fig．10Ｒegressioncurves3Table3ComparisonoftheregressionequationＲ2δ%er%fccu=－96．11+4．51Ｒm2－0．029Ｒ2m20．567．088．70fccu=1．66Ｒ0．913m20．557．339．00481··47·2．47。4-58-10。。2．2C35～C80。8ZC3-A7。13δer2。ZC3-AH450。81013H450ZC3-A。C80。3C40C601500mm×1500mm×1500mm11。28d、78d90d100mm、1∶1。ZC3-AC4014ZC3-AC6015H450C6036。451C40C604．5%。63C605．9%。。11Fig．11Box-typespecimen4C40Table4TestresultsofC40box-typespecimendMPaMPa%2838．448．7514．57841．355．257．33．79042．157．559．83．85C60ZC3-ATable5TestresultsofC60box-typespecimenZC3-AdMPaMPa%2844．964．167．04．37846．768．470．93．59049．875．878．33．26C60GHT450Table6TestresultsofC60box-typespecimenGHT450dMPaMPa%2859．769．867．04．27863．973．770．93．99064．073．778．35．9·48·20154135%、50%。2。C801。。3。1．M．20112JGJ/T23—2011S．2011JGJ/T23—2011TechnicalspecificationforinspectingofconcretecompressivestrengthbyreboundmethodJ．BeijingChinaArchitecture＆BuildingPress2011inChinese3．J．20115140-141WangDayong．Experimentalstudyoninspectingstructurecompressivestrengthofconcretewithhighvolumncompositemineraladmixturesandmixedsandbyultrasonic-reboundcombinedmethodJ．Concrete20115140-141inChinese4．J．200218291-93GuWeiSunYizengLiuBin．Aresearchonmeasuringcurveofstrengthofhigh-strengthconcreteJ．JournalofShenyangArchitectureandCivilEngineeringUniversityNaturalScience200218291-93inChinese5．J．200635482-85ZhaoShaoweiQiangWanmingGuoＲongetal．ExperimentalresearchforinspectionofhighstrengthconcretecompressivestrengthbyreboundmethodJ．JournalofHebeiUniversityofTechnology200635482-85inChinese6．J．2009575-77ZhangHaihong．TheresearchofinspectiononhighintensionconcretecompressivestrengthbyreboundmethodofFujianprovinceJ．FujianBuildingMaterials2009575-77inChinese7．J．2002235474-476ZhuFushengHuangZhiyeXuYanetal．ApplicationofnormalreboundinstrumentindeterminationofstrengthofhighstrengthconcreteJ．JournalofNortheasternUniversityNaturalScience2002235474-476inChinese8．J．20126128-130ChenHaibinZhouKunLuHuidong．ＲesearchonbuildinglocalcurveofreboundmethodforhighstrengthconcreteJ．Concrete20126128-130inChinese9．J．201066-8BianZhihuiChenZhaoyangZhaoShiyongetal．Ｒegressionequationscomparisonofreboundmethodtestingstrengthofhigh-strengthconcreteJ．FlyAshComprehensiveUtiliza