资源描述:
《石油化工生产技术专业毕业论文书撰写规范》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、石油化工生产技术专业毕业论文撰写规范石油化工生产技术教研室编二○○六年十二月meettheconstructiondrawingsprovidedstrengthandworkabilityofconstructionrequirements,mixingratiomustbedeterminedbytest.Constructionwhenyouneedtochangethemixofcementitiousmaterial,retesting,andsubmittedtothesupervisorfor
2、approval.(2)mixingofcementitiousmaterials,shouldbecarriedoutstrictlyaccordingtothetesttodeterminetheingredientsofingredients,notampering,ingredientweighingerrorsshouldbeallowedsubjecttothefollowing:cement±2%;sand,gravelis±3%,water,additives±1%.(3)thecement
3、itiousmaterialinthemixingprocessshouldremainofcoarseandfineaggregatewaterstability,accordingtochangesinmoisturecontentofaggregateandadjustwatertoensuretheaccuracyofthewater/cementratio.(4)mixingtimeofcementitiousmaterials:mechanicalmixingofnotlessthan2~3mi
4、n,notartificialmix.Localsmallartificialmixtureofdrymixatleastthreetimes,thenwet-mixtouniformcolor,canbeused.(5)withcementitiousmaterialsshouldbemixed.Cementitiousmaterialsallowedintervalshouldbedeterminedthroughexperiments,orrefertothetableselected.Segrega
5、tionduringtransportandstorage,watermortarandmasonrybeforemixingagain,initialsettingofcementitiousmaterialsshallnotbeused.Cementitiousmaterialsallowbreakswhenlayingtemperature(℃)allowedinterval(min),ordinaryPortlandcementandslagPortlandcement20~309012010~20
6、1351805~10195/8.4.5andpozzolanacementmasonrymasonrywithPucastingmethod,theprocessis:masonrypreparation–materialselection→putspulpplacedstone→...8.58.5.1masonrymortarforconstructionofmasonrysandinthesand,andsiftthesandshallnotincludegrass-rootsandotherdebri
7、s.Sandclaydoesnotexceed5%.Mixingofmortar350Lmortarmixer.Mixingtime,finishedfeeding,andshallnotbelessthan1.5min,thebatchingprocess,cementbatchingerrorcontrolwithin±5%.Mortarmixusedcementmortarusedintheblendedinto3h,suchasatemperatureofover30°cduringtheconst
8、ructionperiod,within2Hoftheblendedintofinished,suchasthephenomenonofcementmortar,mixagaininfrontofthebuilding.8.5.2brickmaterialaccordingtothedesignrequirements,usingprecastconcretehollowbrick,sourcedlocally.