建筑施工起重机械安全检测规程(1)

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2、tyguarantees.(3)usinghotwatermix,hotwatertemperaturedoesnotexceed60ctoensureconcretemachineuptoatemperatureof15~20℃,castingtemperatureisgreaterthan5degreescentigrade.(4)strictcontrolofmixingconcreteadmixtureadmixtureofcementandconcrete,mixingtimestirringatroomtemperaturetimeof1.5times.2tr

3、ansportready-mixedconcretetrucks,concretemustbecoatedintransportinsulationtopreventheatloss.Toshortenthetransporttimetoensureconcretepouringtemperaturenotlowerthan10degreesCelsius.3,thepouringofconcrete(1)beforeconcretepouring,clearingsnowandiceonthetemplateandsteelanddirt.(2)usingconcret

4、epumps(HBT-80)fortheverticaltransportation,fire-retardantthermalinsulationforconcretepumppipewrap,topreventheatloss,toensurethattheconcreteintothemoldtemperatureofnotlessthan5degreescentigrade.(3)concretenotsubjectedtoimpactloadingnotfullycooled.4,concretecuringconcretecuring:concretecuri

5、ngcomprehensivethermalstoragemethodisused.(1)wallofconcretecuring:releasetimeafterflame-resistantquiltcoverandpressupordowntopreventwind,accordingtothethermalcalculationtodeterminethethicknessoftheinsulationis.(2)curingconcreteroof:roofaftertheconcretehasbeenpoured,thesurfacecoveredwithre

6、ady-mixedconcretemanufacturerstosignqualityguarantees.(3)usinghotwatermix,hotwatertemperaturedoesnotexceed60ctoensureconcretemachineuptoatemperatureof15~20℃,castingtemperatureisgreaterthan5degreescentigrade.(4)strictcontrolofmixingconcreteadmixtureadmixtureofcementandconcrete,mixingtimest

7、irringatroomtemperaturetimeof1.5times.2transportready-mixedconcretetrucks,concretemustbecoatedintransportinsulationtopreventheatloss.Toshortenthetransporttimetoensureconcretepouringtemperaturenotlowerthan10degreesCelsius.3,thepouringofconcrete(1)beforeconcretepourin