Video: Yuav ua li cas gypsum cuam tshuam rau lub sijhawm teem ntawm cement?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Lub retardation mechanism ntawm gypsum yog : thaum twg xis mas yog hydrated, gypsum reacts nrog C3A sai sai tsim calcium sulfoaluminate hydrate uas tso nyiaj thiab tsim cov yeeb yaj kiab tiv thaiv ntawm cement particles los cuam tshuam cov dej ntawm C3A thiab ncua sijhawm teem sijhawm ua haujlwm.
Hauv qhov no, vim li cas gypsum tau ntxiv rau hauv cov cement?
Thaum twg cement yog sib xyaw nrog dej, nws dhau los ua lub sijhawm ntev. Qhov no yog hu ua kev teeb tsa cement . Gypsum feem ntau ntxiv rau Portland cement rau tiv thaiv thaum ntxov hardening los yog "flash setting", cia ua hauj lwm raws sij hawm. Gypsum slows qhov chaw ntawm cement yog li ntawd cement yog txaus txaus.
Ib sab saum toj no, uas txo tus nqi ntawm kev teeb tsa cov cement? Gypsum ntxiv rau cement rau txo tus kev teeb tsa tus nqi ntawm cement uas yog nce kev teeb tsa sij hawm
Ib sab saum toj, ntau npaum li cas gypsum ntxiv rau cov cement?
Rau Portland zoo tib yam cement , nws tseem nyob nruab nrab ntawm 3 txog 4% thiab nyob rau qhov xwm txheej ceev cement , nws tuaj yeem txo qis txog 2.5%. Lub hom phiaj tseem ceeb ntawm ntxiv gypsum hauv cement yog kom qeeb cov txheej txheem hydration ntawm cement ib zaug nws yog tov nrog dej.
Lub sijhawm teeb tsa ntawm pob zeb yog dab tsi?
Pib teem sijhawm lub sijhawm yuav tsum tau ua kom ncua cov txheej txheem dej los yog tawv. Kawg teem sijhawm yog sij hawm thaum lub paste kiag li poob nws splasticity. Nws yog sij hawm coj rau cement xibhwb cement pob zeb kom tawv txaus thiab ua kom lub ntsej muag ntawm cov pwm uas nws raug pov.
Pom zoo:
Tus neeg teem sijhawm teem sijhawm ntau npaum li cas?
Cov nyiaj hli nruab nrab hauv tebchaws rau Tus Teem Sijhawm Teem Sijhawm hauv Tebchaws Meskas yog $ 28,143 toj xyoo lossis $ 14 toj ib teev. Cov uas nyob hauv qab 10 feem pua ua qis dua $ 17,000 hauv ib xyoos, thiab 10 feem pua saum toj no tau tshaj $ 44,000
Lub sijhawm teem sijhawm rau auction txhais li cas?
Feem ntau cov khoom yog "Teem sijhawm rau Kev Sib Tw" kom txog rau thaum hnub ntawm kev sib tw thaum lawv yuav raug muab tshem tawm lossis ncua sijhawm. Kev muag khoom raug kaw feem ntau raug ncua lossis raug tshem tawm ntawm lub sijhawm kawg vim tias tus tswv tsev tau txais kev pom zoo nrog tus qiv lossis tus qiv nrhiav tus neeg yuav khoom ua ntej pib qhov kev sib tw
Kev sib tsoo zoo ntawm cov cement cuam tshuam li cas rau lub sijhawm teem?
Cov nyhuv ntawm kev sib tsoo zoo nyob rau lub sij hawm OfSetting Txij li cov coarse hais ntawm cov cement yog xyaum inert, muaj txhua yam uas yuav tsum tau ntseeg hais tias finer sib tsoo yuav ua rau kom cov kev ua ntawm ib tug qauv, txij li thaum nws yuav ua rau ib co inert particlesactive
Kuv yuav teem sijhawm lub rooj sib tham ob lub lis piam hauv Outlook 2016 li cas?
Qhib Outlook, tom qab ntawd nyem rau ntawm lub rooj sib tham khawm. Nyob rau hauv lub qhov rai teem caij, nyem lub pob rov tshwm sim. Nyob rau hauv lub qhov rais teem caij rov tshwm sim, xaiv lub Hnub thiab Txhua lub npov xov tooj cua, ces nkag mus rau 14 rau hauv Txhua daim teb. Nyem OK khawm, tom qab ntawd ua kom tiav cov txheej txheem ntawm Outlook
Yuav tsum muab lub sijhawm twg rau tus neeg muag khoom yog tias lub sijhawm ua haujlwm tsis tas sijhawm?
1) Yog tias lub sijhawm ua haujlwm tseem tsis tau tas sijhawm, tus neeg muag khoom tuaj yeem tsim kev sib tw kom zoo lossis xa cov khoom ua ntej hnub kawg, (thiab yog li kho qhov kev sib tw tsis zoo yam tsis muaj kev lav phib xaub rau kev ua txhaum cai). -Tus neeg muag khoom yuav tsum ua tam sim ntawd thiab yuav tsum ua raws li lub sijhawm tshuav rau kev ua haujlwm