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28CONSTＲUCTIONTECHNOLOGY20145439DOI10.7672/sgjs2014090028*12111121．1000132．100013。MB。《》MB。MBSiO2Al2O3、、。MBMB。MB、。TU528A1002-8498201409-0028-04StudyontheTestMethodsoftheMethyleneBlueValueoftheLimestonePowderZhouYongxiang12WangYonghai2WangWei1DingWei1HeGengxin121．ChinaAcademyofBuildingＲesearchBeijing100013China2．NationalTechnicalCommittee458onConcreteofStandardizationAdministrationofChinaBeijing100013ChinaAbstractTheapplicationofthelimestonepowderintheconcreteisbecomingmoreandmoreimportantrecently．TheMethyleneBlueValueMBisthekeytechnologicalindexwhichreflectstheabsorptionpropertiesofthelimestonepowder．AccordingtotheconstitutingrequirementofthestandardTechnicalspecificationfortheapplicationofthelimestonepowderintheconcretethetestmethodsandthechangingregularitiesareanalyzedsystematically．ThetestingresultoftheMBrelatestoseveralfactorsincludingthecontentsofSiO2andAl2O3thesampleamountaswellasthesedimentpercentageetc．ItisstableandregularthatthetestingresultsoftheMBofthecompoundofthelimestonepowderandthestandardsandwhichissimilartothatofthemanufacturedsand．TheeffectofthelimestonepowderwithhighpuritytotheMBofthefineaggregatesystemissimilartothatoftheflyashandtheslagpowder．KeywordsconcretelimestonepowderMethyleneBluevalueadsorption*“”“”2008BAE61B05E-mailxiangzizhou@gmail．com2014-01-031-2。。3。。。。MB。MB。。《》。MB。。2014No．9291Table1Chemicalcompositionanalysisofthelimestonepowder%CaCO3SiO2MgOAl2O3Fe2O3K2OTiO2SrOSO3Cr2O3P2O5MnO187.335.183.871.800.840.630.120.080.050.050.040.03293.181.933.240.610.520.250.040.080.060.050.020.03378.8810.472.003.442.080.590.440.300.520.300.080.04463.3622.512.675.783.790.870.460.080.110.050.080.07577.9910.773.074.030.630.350.400.092.380.05—0.13689.817.22—1.210.760.690.090.050.060.060.030.02798.121.04—0.360.25——0.02—0.05—0.01CaO32Table2Basicperformanceofthelimestonepowder%45μm7d28d14.0971030.163.464.2257.5971040.173.268.4311.8981000.268.166.5413.2981000.173.867.1515.91001010.175.772.4680.51001000.177.765.3781.5971010.271.869.5817.81001020.276.469.01。8X812。2MBMB《、》JGJ52—2006。。JGJ52—2006200g。1～6100g200g7200gMB3。3MB3MB7.07MB。1MBSiO2+Al2O31。1MBSiO2+Al2O33MBSiO2+Al2O3。3MBTable3TheMBvaluesofthesamples/g/mLMB1200603.0100303.02200251.25100121.232001457.25100707.04200703.5100353.55200502.5100252.56200452.25100222.27200150.751MBSiO2+Al2O3Fig．1TherelationshipofMBvalueandcontentofSiO2+Al2O3forlimestonepowder3043100g200gMB。SiO272%2001005025g4MB4。42%200g100gMB。。47MBTable4TheMBvaluesunderdifferentmassesofNo．7samplewithmudpowder/%/g/mLMB0200150.752.0200301.502.0100151.502.050102.002.02552.003MBMB70.5%1.0%1.5%2.0%2.5%3.0%3.5%4.0%4.5%5.0%MB5。57MBTable5TheMBvaluesofNo．7samplewithdifferentcontentofmudpowder/%/g/mLMB0200150.750.5200201.001.0200201.001.5200251.252.0200301.502.5200301.503.0200402.003.5200402.004.0200452.254.5200452.255.0200502.505MB5%MB2.50。4MBJGJ52—2006MB1.4。0.5～1.0mm1∶3MB。7《》GB/T17671—19990.5～1.0mm。5%6%7%8%9%10%JGJ52—2006MB。6。670.5～1.0mmMBTable6TheMBvaluesofcompositesampleofNo．7powderand0.5～1.0mmstandardsand/%/g0.5～1.0mm/g/mLMBA1547.52.5150200201.00A2647.03.0150200221.10A3746.53.5150200251.25A4846.04.0150200271.35A5945.54.5150200301.50A61045.05.0150200321.60678%MB1.4。0.5～1.0mm6%8%10%71∶3MB7。77MBTable7TheMBvaluesofcompositesampleofNo．7powderandgradedstandardsand/%/g/g/mLMBC2647.03.0150200221.10C4846.04.0150200271.35C61045.05.0150200321.60670.5～1.0mmMB。MB4MB6%8%10%8。84MB1.0＜1.4。6%MB＞1.85。3%MB1.4。5MB7、MB2014No．931840.5～1.0mmMBTable8TheMBvaluesofcompositesampleofNo．4powderand0.5～1.0mmstandardsand/%/g0.5～1.0mm/g/mLMBB0050.00150200201.00B2647.03.0150200371.85B4846.04.0150200412.05B61045.05.0150200452.259MBTable9TheMBvaluesofcompositesampleofseriesofpowdermaterialsandordinaryriversand/%/g/g/g/mLMBD00000200200291.75D0050g70150200461.45D2647g73150200502.30D4846g74150200542.50D61045g75150200352.70E5—50gⅡ—150200251.25E6846gⅡ4150200402.00E7—50gS95150200251.25E8846gS954150200402.00Ⅱ2.4%0%6%8%10%MB9。925%MBMB。D0E5E7MB、MB。61MBSiO2Al2O3MBSiO2+Al2O3。2MB。3MB。0.5～1.0mmMBMBMB1.4。4、MB。MB。1．J．20091238-43．2．J．2007219-21．3．J．200836101401-1405．2014424。、、。。、、、。。———3、、、76m。、。“”、、。。“”2014-04-30