Cov tshuaj txhuam qhuav (DMM) yog cov khoom siv ua vaj tse hmoov uas tsim los ntawm kev ziab thiab tsoo cov cement, gypsum, txiv qaub ntsuab, thiab lwm yam ua cov khoom siv tseem ceeb, tom qab kev sib piv meej, ntxiv ntau yam khoom siv ntxiv thiab cov khoom sau. Nws muaj qhov zoo ntawm kev sib tov yooj yim, kev tsim kho yooj yim, thiab ruaj khov, thiab siv dav hauv kev tsim kho vaj tse, kev kho kom zoo nkauj thiab lwm yam teb. Cov khoom tseem ceeb ntawm cov tshuaj txhuam qhuav suav nrog cov khoom siv hauv paus, cov khoom sau, cov khoom sib xyaw thiab cov khoom ntxiv. Ntawm lawv,cellulose ether, ua ib qho khoom siv tseem ceeb, ua lub luag haujlwm tseem ceeb hauv kev tswj hwm rheology thiab txhim kho kev ua haujlwm ntawm kev tsim kho.
1. Cov khoom siv tseem ceeb
Cov khoom siv hauv paus yog cov khoom tseem ceeb ntawm cov tshuaj mortar qhuav, feem ntau suav nrog cement, gypsum, lime, thiab lwm yam. Qhov zoo ntawm cov khoom siv hauv paus cuam tshuam ncaj qha rau lub zog, kev nplaum, kev ruaj khov thiab lwm yam khoom ntawm cov tshuaj mortar qhuav.
Cement: Nws yog ib qho ntawm cov khoom siv tseem ceeb tshaj plaws hauv cov mortar qhuav, feem ntau yog cov cement silicate lossis cov cement hloov kho. Qhov zoo ntawm cov cement txiav txim siab lub zog ntawm cov mortar. Cov qib zog txheem feem ntau yog 32.5, 42.5, thiab lwm yam.
Gypsum: feem ntau siv rau hauv kev tsim cov plaster mortar thiab qee cov mortar tshwj xeeb hauv kev tsim kho. Nws tuaj yeem ua rau muaj kev sib xyaw zoo dua thiab ua kom tawv dua thaum lub sijhawm ua kom dej noo thiab txhim kho kev ua haujlwm ntawm cov mortar.
Txiv qaub ntsuab: feem ntau yog siv los npaj qee cov tshuaj khib tshwj xeeb, xws li cov tshuaj khib txiv qaub ntsuab. Kev siv cov txiv qaub ntsuab tuaj yeem ua kom cov tshuaj khib khaws dej tau zoo dua thiab txhim kho nws txoj kev tiv thaiv te.
2. Cov khoom sau
Cov khoom sau yog hais txog cov hmoov inorganic uas siv los kho cov khoom siv ntawm cov mortar, feem ntau suav nrog cov xuab zeb zoo, hmoov quartz, perlite nthuav dav, nthuav dav ceramsite, thiab lwm yam. Cov khoom sau no feem ntau tau txais los ntawm cov txheej txheem tshuaj ntsuam tshwj xeeb nrog qhov loj me sib npaug kom ntseeg tau tias kev ua haujlwm ntawm cov mortar. Lub luag haujlwm ntawm cov khoom sau yog los muab qhov ntim ntawm cov mortar thiab tswj nws cov kua thiab kev nplaum.
Xuab zeb zoo: feem ntau siv rau hauv cov mortar qhuav ib txwm muaj, nrog rau qhov me me, feem ntau qis dua 0.5 hli.
Quartz hmoov: siab fineness, haum rau mortars uas xav tau lub zog siab dua thiab durability.
Cov perlite nthuav dav / cov ceramsite nthuav dav: feem ntau siv rau hauv cov mortars sib dua, nrog rau kev rwb thaiv suab zoo thiab cov khoom rwb thaiv cua sov.
3. Cov khoom sib xyaw
Cov tshuaj ntxiv yog cov tshuaj uas txhim kho kev ua tau zoo ntawm cov tshuaj sib xyaw qhuav, feem ntau suav nrog cov neeg sawv cev khaws dej, cov tshuaj qeeb, cov tshuaj ua kom nrawm, cov neeg sawv cev tiv thaiv kev khov, thiab lwm yam. Cov tshuaj ntxiv tuaj yeem kho lub sijhawm teeb tsa, kev ntws, kev khaws dej, thiab lwm yam ntawm cov tshuaj sib xyaw, thiab txhim kho kev ua tau zoo ntawm kev tsim kho thiab kev siv cov tshuaj sib xyaw.
Tus neeg sawv cev khaws dej: siv los txhim kho qhov khaws dej ntawm cov pob zeb thiab tiv thaiv kom dej tsis txhob vaporized sai dhau, yog li ntawd ntev lub sijhawm tsim kho ntawm cov pob zeb, uas yog qhov tseem ceeb heev, tshwj xeeb tshaj yog nyob rau hauv qhov kub siab lossis qhuav. Cov neeg sawv cev khaws dej feem ntau suav nrog polymers.
Cov tshuaj tiv thaiv: tuaj yeem ncua lub sijhawm teeb tsa ntawm cov mortar, tsim nyog rau qhov chaw tsim kho kub siab kom tiv thaiv cov mortar kom tsis txhob tawv ua ntej lub sijhawm tsim kho.
Cov khoom siv ua kom nrawm: ua kom cov txheej txheem tawv ntawm cov mortar, tshwj xeeb tshaj yog nyob rau hauv qhov kub qis, feem ntau siv los ua kom cov tshuaj tiv thaiv hydration ntawm cov cement thiab txhim kho lub zog ntawm cov mortar.
Antifreeze: siv rau hauv qhov kub qis kom tiv thaiv cov mortar kom tsis txhob poob zog vim khov.
4. Cov Khoom Ntxiv
Cov khoom ntxiv yog hais txog cov tshuaj lom neeg lossis cov khoom ntuj tsim uas siv los txhim kho qee yam khoom tshwj xeeb ntawm cov tshuaj mortar qhuav, feem ntau suav nrog cellulose ether, thickener, dispersant, thiab lwm yam. Cellulose ether, ua cov khoom siv ntxiv uas siv ntau, ua lub luag haujlwm tseem ceeb hauv cov tshuaj mortar qhuav.
Lub luag haujlwm ntawm cellulose ether
Cellulose ether yog ib chav kawm ntawm cov polymer compounds ua los ntawm cellulose los ntawm kev hloov kho tshuaj lom neeg, uas yog siv dav hauv kev tsim kho, txheej, tshuaj txhua hnub thiab lwm yam teb. Hauv cov mortar qhuav, lub luag haujlwm ntawm cellulose ether feem ntau yog pom tseeb hauv cov hauv qab no:
Txhim kho qhov kev khaws cia dej ntawm cov mortar
Cellulose ether tuaj yeem ua rau cov mortar khaws dej tau zoo thiab txo qhov dej evaporation sai. Nws cov qauv molecular muaj cov pab pawg hydrophilic, uas tuaj yeem tsim lub zog sib txuas nrog cov dej molecules, yog li ua rau cov mortar noo thiab zam kev tawg lossis teeb meem kev tsim kho los ntawm kev poob dej sai.
Txhim kho qhov rheology ntawm mortar
Cellulose ether tuaj yeem kho qhov fluidity thiab adhesion ntawm mortar, ua rau mortar sib npaug zoo dua thiab yooj yim rau kev siv thaum lub sijhawm tsim kho. Nws ua rau cov mortar viscosity nce ntxiv los ntawm kev ua kom tuab, ua rau nws tiv thaiv kev sib cais, tiv thaiv mortar los ntawm kev faib thaum siv, thiab ua kom ntseeg tau tias qhov zoo ntawm mortar.
Txhim kho qhov adhesion ntawm mortar
Cov zaj duab xis tsim los ntawm cellulose ether hauv mortar muaj qhov nplaum zoo, uas pab txhim kho lub zog sib txuas ntawm mortar thiab substrate, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem kev tsim kho ntawm txheej thiab tiling, nws tuaj yeem txhim kho kev ua tau zoo ntawm kev sib txuas thiab tiv thaiv kev poob.
Txhim kho qhov tawg tsis kam
Kev siv cov cellulose ether pab txhim kho qhov tawg tsis kam ntawm cov mortar, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem ziab, cellulose ether tuaj yeem txo cov tawg los ntawm kev ntsws los ntawm kev ua kom lub zog thiab lub zog tensile ntawm cov mortar.
Txhim kho kev ua tau zoo ntawm cov mortar
Cellulose etherNws tuaj yeem kho lub sijhawm tsim kho ntawm cov pob zeb mortar, ua kom lub sijhawm qhib ntev dua, thiab ua rau nws tswj tau kev ua haujlwm zoo hauv qhov kub thiab txias lossis qhov chaw qhuav. Tsis tas li ntawd, nws kuj tseem tuaj yeem txhim kho qhov tiaj tus thiab kev ua haujlwm ntawm cov pob zeb mortar thiab txhim kho qhov zoo ntawm kev tsim kho.
Ua ib yam khoom siv hauv tsev uas ua tau zoo thiab zoo rau ib puag ncig, qhov laj thawj ntawm nws cov khoom sib xyaw thiab qhov sib piv txiav txim siab qhov zoo ntawm nws cov kev ua tau zoo. Ua ib qho khoom ntxiv tseem ceeb, cellulose ether tuaj yeem txhim kho cov yam ntxwv tseem ceeb ntawm cov tshuaj mortar qhuav, xws li kev khaws dej, rheology, thiab kev nplaum, thiab ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua tau zoo ntawm kev tsim kho thiab qhov zoo ntawm cov tshuaj mortar. Raws li kev lag luam kev tsim kho txuas ntxiv nce nws cov kev xav tau rau kev ua tau zoo ntawm cov khoom siv, kev siv cellulose ether thiab lwm yam khoom siv ntxiv rau hauv cov tshuaj mortar qhuav yuav dhau los ua ntau dua thiab dav dua, muab qhov chaw ntau dua rau kev nce qib hauv kev lag luam.
Lub sijhawm tshaj tawm: Plaub Hlis-05-2025