Qhuav-mix mortar (DMM) yog cov khoom siv hauv tsev tsim los ntawm kev ziab thiab crushing cement, gypsum, txiv qaub, thiab lwm yam raws li cov ntaub ntawv tseem ceeb, tom qab qhov tseeb proportioning, ntxiv ntau yam kev ua haujlwm thiab cov khoom siv ntxiv. Nws muaj qhov zoo ntawm kev sib xyaw yooj yim, kev tsim kho yooj yim, thiab ruaj khov zoo, thiab tau siv dav hauv kev tsim kho engineering, kho kom zoo nkauj engineering thiab lwm yam. Lub ntsiab Cheebtsam ntawm qhuav-siv mortar muaj xws li cov ntaub ntawv hauv paus, fillers, admixtures thiab additives. Ntawm lawv,cellulose ether, raws li ib qho tseem ceeb ntxiv, plays lub luag haujlwm tseem ceeb hauv kev tswj hwm rheology thiab txhim kho kev tsim kho.
1. Cov khoom siv hauv paus
Cov khoom siv hauv paus yog cov khoom tseem ceeb ntawm cov khoom sib xyaw qhuav, feem ntau suav nrog cov cement, gypsum, txiv qaub, thiab lwm yam. Qhov zoo ntawm cov khoom siv hauv paus ncaj qha cuam tshuam rau lub zog, adhesion, durability thiab lwm yam khoom ntawm qhuav-siv mortar.
Cement: Nws yog ib qho ntawm cov khoom siv hauv paus feem ntau hauv cov tshuaj khib nyiab qhuav, feem ntau zoo tib yam silicate cement lossis hloov cement. Qhov zoo ntawm cov cement txiav txim siab lub zog ntawm mortar. Feem ntau cov qauv muaj zog yog 32.5, 42.5, thiab lwm yam.
Gypsum: feem ntau siv hauv kev tsim cov plaster mortar thiab qee qhov tshwj xeeb hauv tsev mortar. Nws tuaj yeem ua kom zoo dua coagulation thiab hardening zog thaum lub sij hawm hydration txheej txheem thiab txhim kho lub operability ntawm lub mortar.
Txiv qaub: feem ntau yog siv los npaj qee qhov tshwj xeeb mortars, xws li txiv qaub mortar. Kev siv cov txiv qaub tuaj yeem txhim kho cov dej tuav ntawm mortar thiab txhim kho nws cov Frost tsis kam.
2. Filler
Filler hais txog inorganic hmoov siv los kho lub cev lub cev ntawm mortar, feem ntau suav nrog cov xuab zeb zoo, quartz hmoov, nthuav perlite, nthuav dav ceramsite, thiab lwm yam. Lub luag haujlwm ntawm qhov muab tub lim yog muab lub ntim ntawm cov tshuaj khib thiab tswj nws cov dej ntws thiab adhesion.
Cov xuab zeb zoo: feem ntau siv hauv cov tshuaj khib nyiab qhuav, nrog rau qhov me me, feem ntau hauv qab 0.5 hli.
Quartz hmoov: siab fineness, haum rau mortars uas yuav tsum tau ntau zog thiab durability.
Expanded perlite/expanded ceramsite: feem ntau siv nyob rau hauv lub teeb mortars, nrog zoo suab rwb thaiv tsev thiab tshav kub rwb thaiv tsev zog.
3. Cov khoom xyaw
Admixtures yog cov tshuaj lom neeg uas txhim kho kev ua haujlwm ntawm cov tshuaj khib nyiab qhuav, feem ntau suav nrog cov dej tuav cov neeg ua haujlwm, retarders, accelerators, antifreeze agents, thiab lwm yam. Admixtures tuaj yeem kho lub sijhawm teem sijhawm, fluidity, dej tuav, thiab lwm yam ntawm mortar, thiab ntxiv txhim kho kev tsim kho thiab kev siv cov tshuaj khib nyiab.
Dej-retaining tus neeg saib xyuas: siv los txhim kho cov dej tuav ntawm mortar thiab tiv thaiv dej los ntawm volatilizing sai heev, yog li ncua sij hawm tsim kho ntawm mortar, uas yog ib qho tseem ceeb heev, tshwj xeeb tshaj yog nyob rau hauv kub los yog qhuav ib puag ncig. Feem ntau cov dej khaws cia muaj xws li cov polymers.
Retarders: tuaj yeem ncua lub sijhawm teem sijhawm ntawm mortar, haum rau qhov kub thiab txias tsim ib puag ncig tiv thaiv mortar los ntawm hardening ntxov ntxov thaum tsim kho.
Accelerators: ceev cov txheej txheem hardening ntawm mortar, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias ib puag ncig, feem ntau siv los ua kom cov hydration ntawm cov cement thiab txhim kho lub zog ntawm mortar.
Antifreeze: siv nyob rau hauv qhov kub thiab txias ib puag ncig los tiv thaiv mortar los ntawm poob lub zog vim khov.
4. Cov tshuaj ntxiv
Additives xa mus rau cov tshuaj los yog tej yam ntuj tso khoom siv los txhim kho tej yam khoom ntawm qhuav-sib tov mortar, feem ntau suav nrog cellulose ether, thickener, dispersant, thiab lwm yam Cellulose ether, raws li ib tug nquag siv functional additive, plays lub luag hauj lwm tseem ceeb nyob rau hauv qhuav-mix mortar.
Lub luag haujlwm ntawm cellulose ether
Cellulose ether yog ib chav kawm ntawm cov khoom siv polymer ua los ntawm cellulose los ntawm kev hloov kho tshuaj, uas yog siv dav hauv kev tsim kho, txheej txheej, tshuaj niaj hnub thiab lwm yam haujlwm. Nyob rau hauv qhuav-mix mortar, lub luag hauj lwm ntawm cellulose ether yog feem ntau xav txog nyob rau hauv cov nram qab no yam:
Txhim kho cov dej tuav ntawm mortar
Cellulose ether tuaj yeem ua kom cov dej khaws cia ntawm mortar thiab txo cov evaporation sai ntawm cov dej. Nws cov qauv molecular muaj cov pab pawg hydrophilic, uas tuaj yeem tsim muaj zog khi nrog cov dej molecules, yog li ua kom cov mortar moist thiab tsis txhob muaj cov kab nrib pleb lossis teeb meem kev tsim kho los ntawm kev poob dej sai.
Txhim kho rheology ntawm mortar
Cellulose ether tuaj yeem kho qhov fluidity thiab adhesion ntawm mortar, ua rau lub mortar ntau yam thiab yooj yim rau kev khiav lag luam thaum siv. Nws tsub kom lub viscosity ntawm mortar los ntawm thickening, tsub kom nws anti-segregation, tiv thaiv mortar los ntawm stratifying thaum lub sij hawm siv, thiab xyuas kom meej kev tsim kho ntawm mortar.
Txhim kho qhov adhesion ntawm mortar
Cov zaj duab xis tsim los ntawm cellulose ether nyob rau hauv mortar muaj qhov zoo adhesion, uas yuav pab txhim kho lub zog ntawm kev sib txuas ntawm mortar thiab substrate, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem ntawm txheej txheej thiab tiling, nws tuaj yeem txhim kho kev sib raug zoo thiab tiv thaiv kev poob.
Txhim kho kev tawg tsis kam
Kev siv cov cellulose ether pab txhim kho qhov tawg tsis kam ntawm mortar, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem ziab, cellulose ether tuaj yeem txo cov kab nrib pleb los ntawm shrinkage los ntawm kev ua kom lub zog thiab tensile lub zog ntawm mortar.
Txhim kho kev tsim kho ntawm mortar
Cellulose ethertuaj yeem kho lub sijhawm tsim kho ntawm mortar, ua kom lub sijhawm qhib, thiab ua kom nws muaj kev tsim kho zoo hauv qhov kub thiab txias. Tsis tas li ntawd, nws tseem tuaj yeem txhim kho qhov flatness thiab kev ua haujlwm ntawm mortar thiab txhim kho kev tsim kho kom zoo.
Raws li cov khoom siv zoo thiab ib puag ncig zoo hauv tsev, qhov laj thawj ntawm nws cov muaj pes tsawg leeg thiab kev faib ua feem txiav txim siab qhov zoo ntawm nws cov kev ua tau zoo. Raws li ib qho tseem ceeb ntxiv, cellulose ether tuaj yeem txhim kho cov khoom tseem ceeb ntawm cov khoom sib xyaw qhuav, xws li dej tuav, rheology, thiab adhesion, thiab plays lub luag haujlwm tseem ceeb hauv kev txhim kho kev tsim kho thiab kev ua kom zoo ntawm mortar. Raws li kev tsim kho kev lag luam txuas ntxiv nce nws cov kev xav tau ntawm cov khoom siv, daim ntawv thov ntawm cellulose ether thiab lwm yam khoom siv ntxiv hauv cov tshuaj khib nyiab qhuav yuav dhau los ua ntau dua, muab qhov chaw ntau dua rau kev lag luam kev lag luam.
Post lub sij hawm: Apr-05-2025