Kev tsim kho tshuab ntawm cov plastering mortar tau ua tiav qhov kev vam meej hauv xyoo tas los no. Cov plastering mortar kuj tau tsim los ntawm qhov chaw sib tov tus kheej mus rau qhov tam sim no cov mortar qhuav-mix thiab ntub-mix mortar. Nws qhov kev ua tau zoo dua thiab kev ruaj khov yog cov yam tseem ceeb los txhawb kev tsim kho tshuab plastering, thiab cellulose ether yog siv ua plastering mortar. Cov khoom siv tseem ceeb muaj lub luag haujlwm tseem ceeb. Hauv qhov kev sim no, los ntawm kev kho qhov viscosity thiab dej khaws cia ntawm cellulose ether, thiab los ntawm kev hloov kho synthetic, cov teebmeem ntawm cov cim qhia kev sim xws li dej khaws cia tus nqi, 2 teev poob sib xws, qhib lub sijhawm, sag tsis kam, thiab fluidity ntawm plastering mortar ntawm kev tsim kho tshuab tau kawm. Thaum kawg, nws tau pom tias cellulose ether muaj cov yam ntxwv ntawm dej khaws cia tus nqi siab thiab cov khoom zoo qhwv, thiab tshwj xeeb tshaj yog tsim rau kev tsim kho tshuab ntawm plastering mortar, thiab txhua tus cim ntawm plastering mortar ua tau raws li cov qauv hauv tebchaws.
Tus nqi khaws dej ntawm cov plastering mortar
Qhov ceev ntawm kev khaws dej ntawm cov plastering mortar yog qhov nce ntxiv thaum qhov viscosity ntawm cellulose ether yog los ntawm 50,000 txog 100,000, thiab nws yog qhov txo qis thaum nws yog los ntawm 100,000 txog 200,000, thaum qhov ceev ntawm kev khaws dej ntawm cellulose ether rau kev txau tshuab tau mus txog ntau dua 93%. Qhov ceev ntawm kev khaws dej ntawm cov mortar siab dua, qhov tsawg dua qhov yuav muaj mortar yuav los ntshav. Thaum lub sijhawm sim txau nrog lub tshuab txau mortar, nws tau pom tias thaum qhov ceev ntawm kev khaws dej ntawm cellulose ether qis dua 92%, cov mortar yuav los ntshav tom qab muab tso rau ib lub sijhawm, thiab, thaum pib txau, nws yooj yim heev rau thaiv cov yeeb nkab. Yog li ntawd, thaum npaj cov plastering mortar uas tsim nyog rau kev tsim kho tshuab, peb yuav tsum xaiv cellulose ether nrog qhov ceev ntawm kev khaws dej siab dua.
Cov tshuaj nplaum plastering 2 teev poob qhov sib xws
Raws li cov kev cai ntawm GB/T25181-2010 "Cov Mortar Sib Xyaws Npaj Txhij", qhov yuav tsum tau poob qhov sib xws ob teev ntawm cov plastering mortar ib txwm yog tsawg dua 30%. Cov viscosity ntawm 50,000, 100,000, 150,000, thiab 200,000 tau siv rau kev sim poob qhov sib xws 2 teev. Nws tuaj yeem pom tias thaum cov viscosity ntawm cellulose ether nce ntxiv, qhov poob qhov sib xws 2 teev ntawm cov mortar yuav maj mam txo qis, uas kuj qhia tau tias cov viscosity ntawm cellulose ether Qhov siab dua tus nqi, qhov zoo dua qhov ruaj khov ntawm cov mortar thiab qhov zoo dua qhov kev ua tau zoo ntawm cov mortar. Txawm li cas los xij, thaum lub sijhawm txau tiag tiag, nws tau pom tias thaum lub sijhawm kho leveling tom qab, vim tias cov viscosity ntawm cellulose ether siab dhau, qhov sib xws ntawm cov mortar thiab lub trowel yuav ntau dua, uas tsis zoo rau kev tsim kho. Yog li ntawd, nyob rau hauv cov ntaub ntawv ntawm kev ua kom ntseeg tau tias cov mortar tsis settle thiab tsis delaminate, qhov qis dua qhov viscosity nqi ntawm cellulose ether, qhov zoo dua.
Lub sijhawm qhib ntawm cov plastering mortar
Tom qab cov tshuaj pleev plastering raug txau rau ntawm phab ntsa, vim yog dej nqus ntawm cov phab ntsa substrate thiab cov dej noo noo ntawm qhov chaw ntawm cov tshuaj pleev, cov tshuaj pleev yuav tsim ib qho zog hauv lub sijhawm luv luv, uas yuav cuam tshuam rau kev tsim kho theem tom ntej. Lub sijhawm clotting tau raug soj ntsuam. Tus nqi viscosity ntawm cellulose ether yog nyob rau hauv qhov ntau ntawm 100,000 txog 200,000, lub sijhawm teeb tsa tsis hloov pauv ntau, thiab nws kuj muaj qee qhov kev sib raug zoo nrog tus nqi khaws cia dej, uas yog hais tias, qhov siab dua tus nqi khaws cia dej, lub sijhawm teeb tsa ntev dua ntawm cov tshuaj pleev.
Kev ua haujlwm ntawm cov plastering mortar
Qhov poob ntawm cov khoom siv txau muaj ntau yam ua rau qhov fluidity ntawm cov plastering mortar. Nyob rau hauv tib lub dej-khoom siv piv, qhov siab dua qhov viscosity ntawm cellulose ether, qhov qis dua qhov fluidity ntawm mortar. , uas txhais tau tias qhov siab dua qhov viscosity ntawm cellulose ether, qhov ntau dua qhov tsis kam ntawm cov mortar thiab qhov ntau dua qhov hnav ntawm cov khoom siv. Yog li ntawd, rau kev tsim kho tshuab ntawm plastering mortar, qhov qis dua viscosity ntawm cellulose ether zoo dua.
Kev tsis kam ntawm cov plastering mortar
Tom qab cov tshuaj pleev plastering raug txau rau ntawm phab ntsa, yog tias qhov tsis kam ntawm cov tshuaj pleev tsis zoo, cov tshuaj pleev yuav sag lossis txawm tias plam tawm, cuam tshuam loj heev rau qhov tiaj tus ntawm cov tshuaj pleev, uas yuav ua rau muaj teeb meem loj rau kev tsim kho tom qab. Yog li ntawd, cov tshuaj pleev zoo yuav tsum muaj thixotropy zoo heev thiab tiv taus sag. Qhov kev sim pom tias tom qab cov cellulose ether nrog viscosity ntawm 50,000 thiab 100,000 tau tsa ntsug, cov vuas ncaj qha swb nqes, thaum cov cellulose ether nrog viscosity ntawm 150,000 thiab 200,000 tsis plam. Lub kaum sab xis tseem ntsug tsa, thiab yuav tsis muaj kev plam tshwm sim.
Lub zog ntawm cov plastering mortar
Siv 50,000, 100,000, 150,000, 200,000, thiab 250,000 cellulose ethers los npaj cov qauv plastering mortar rau kev tsim kho tshuab, nws tau pom tias nrog kev nce ntawm cellulose ether viscosity, lub zog ntawm plastering mortar qis dua. Qhov no yog vim cellulose ether tsim cov kua viscosity siab hauv dej, thiab ntau lub npuas cua ruaj khov yuav raug qhia thaum lub sijhawm sib tov ntawm cov mortar. Tom qab cov cement tawv, cov npuas cua no yuav tsim ntau lub voids, yog li txo qhov zog ntawm cov mortar. Yog li ntawd, cov plastering mortar uas tsim nyog rau kev tsim kho tshuab yuav tsum muaj peev xwm ua tau raws li qhov tsim nyog, thiab yuav tsum xaiv cov cellulose ether tsim nyog.
Lub sijhawm tshaj tawm: Lub Peb Hlis-15-2023