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1、武汉理工大学二○一三年攻读硕士学位研究生招生专业目录武汉理工大学二○一二年九月meettheconstructiondrawingsprovidedstrengthandworkabilityofconstructionrequirements,mixingratiomustbedeterminedbytest.Constructionwhenyouneedtochangethemixofcementitiousmaterial,retesting,andsubmittedtothesupervisorforapproval.(2)mixingofcementitiousmaterial
2、s,shouldbecarriedoutstrictlyaccordingtothetesttodeterminetheingredientsofingredients,notampering,ingredientweighingerrorsshouldbeallowedsubjecttothefollowing:cement±2%;sand,gravelis±3%,water,additives±1%.(3)thecementitiousmaterialinthemixingprocessshouldremainofcoarseandfineaggregatewaterstabilit
3、y,accordingtochangesinmoisturecontentofaggregateandadjustwatertoensuretheaccuracyofthewater/cementratio.(4)mixingtimeofcementitiousmaterials:mechanicalmixingofnotlessthan2~3min,notartificialmix.Localsmallartificialmixtureofdrymixatleastthreetimes,thenwet-mixtouniformcolor,canbeused.(5)withcementi
4、tiousmaterialsshouldbemixed.Cementitiousmaterialsallowedintervalshouldbedeterminedthroughexperiments,orrefertothetableselected.Segregationduringtransportandstorage,watermortarandmasonrybeforemixingagain,initialsettingofcementitiousmaterialsshallnotbeused.Cementitiousmaterialsallowbreakswhenlaying
5、temperature(℃)allowedinterval(min),ordinaryPortlandcementandslagPortlandcement20~309012010~201351805~10195/8.4.5andpozzolanacementmasonrymasonrywithPucastingmethod,theprocessis:masonrypreparation–materialselection→putspulpplacedstone→...8.58.5.1masonrymortarforconstructionofmasonrysandinthesand,a
6、ndsiftthesandshallnotincludegrass-rootsandotherdebris.Sandclaydoesnotexceed5%.Mixingofmortar350Lmortarmixer.Mixingtime,finishedfeeding,andshallnotbelessthan1.5min,thebatchingprocess,cementbatchingerrorcontrolwithin±5%.Mortarmixusedcementmortarusedintheblendedinto3h,suchasatemperatureofover30°cdur
7、ingtheconstructionperiod,within2Hoftheblendedintofinished,suchasthephenomenonofcementmortar,mixagaininfrontofthebuilding.8.5.2brickmaterialaccordingtothedesignrequirements,usingprecastconcretehollowbrick,sourcedlocally
