Dab tsi yog waterproofing mortar?
Aug 12, 2024
Waterproof mortar yog ib hom khoom siv dej tsis sib haum uas ua tiav cov dej tsis muaj dej thiab tsis muaj dej los ntawm kev txhim kho qhov ntom ntawm cov tshuaj khib thiab txhim kho nws cov kev sib tsoo. Nws yog tsuas yog siv rau hauv cov dej tsis muaj dej uas muaj cov kab nrib pleb uas tsis zoo yuav tsis txhim kho vim kev sib haum xeeb ntawm cov txheej txheem, kub thiab av noo hloov, lossis kev co. Muaj peb hom dej khib nyiab siv los ua cov txheej txheem dej tsis zoo hauv cov haujlwm xws li: (1) Rigid multi-layer cement mortar; (2) Waterproof mortar nrog ntxiv waterproofing agents; (3) Polymer cement waterproof mortar.
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Rigid Multi-layer Cement Mortar
Hom mortar no yog npaj los ntawm txheej txheej thiab compacting cement paste ua los ntawm cov cement thiab dej, thiab cov cement mortar ua los ntawm cov cement, xuab zeb, thiab dej. Cov khaubncaws sab nraud povtseg yog siv thiab sib cog lus kom txiav tawm feem ntau ntawm cov kab capillary, tsuas yog ib qho me me ntawm cov seem capillary pores, uas tsis tuaj yeem tsim cov dej-permeable network txuas ntxiv. Lub hardened waterproof txheej yog li nthuav tawm siab waterproof thiab impermeability kev ua tau zoo.
Waterproof mortar nrog Ntxiv Waterproofing Agents
Cov tshuaj tiv thaiv dej tau ntxiv rau cov cement mortar los txhim kho nws cov dej tsis zoo. Feem ntau hom dej khib nyiab nrog cov tshuaj tiv thaiv dej muaj xws li chloride hlau tsis muaj dej khib nyiab, ferric chloride waterproof mortar, hlau xab npum waterproof mortar, thiab ultra-thaum ntxov zog waterproof mortar.
Chloride Hlau Waterproof Mortar
Hom mortar no yog cov kua daj daj uas npaj los ntawm kev sib xyaw cov ntsev xws li calcium chloride thiab aluminium chloride nrog dej hauv ib qho piv txwv, thiab tom qab ntawd ntxiv cov sib tov rau cov cement mortar. Thaum lub sij hawm teem thiab hardening txheej txheem ntawm lub mortar, cov tebchaw xws li hydrated calcium chloroaluminate thiab hydrated calcium chloroaluminate yog tsim, uas sau cov voids nyob rau hauv lub mortar, li no pab txhawb nws ceev thiab waterproof zog.
Ferric Chloride Waterproof Mortar
Cov dej khib nyiab no yog npaj siv ferric chloride waterproofing agents, uas yog tsim los ntawm hlau oxide, hydrochloric acid, thiab txhuas sulfate ua cov ntaub ntawv tseem ceeb. Tus neeg saib xyuas dej tsis zoo tshwm sim los ntawm kev daws teeb meem xim av tsaus, feem ntau yog tsim los ntawm ferric chloride, ferrous chloride, thiab txhuas sulfate. Tus neeg sawv cev yog thawj zaug diluted nrog dej ua ntej sib xyaw nrog cov cement thiab xuab zeb los ua ib lub mortar nrog cov khoom zoo heev. Nyob rau hauv mortar, ferric chloride reacts nrog calcium hydroxide uas tsim thaum lub sij hawm cement hydration txheej txheem los tsim calcium chloride thiab ferric hydroxide colloid. Calcium chloride activates cov cement, txhim kho lub zog ntawm mortar, thaum lub ferric hydroxide colloid txo cov ntshav ntawm cov mortar thiab ua rau kom nws ceev.
Hlau xab npum Waterproof mortar
Hom dej khib nyiab no yog npaj los ntawm kev ntxiv cov mis nyuj dawb slurry, uas yog saponified los ntawm cua sov sib tov ntawm alkali hlau tebchaw xws li sodium carbonate los yog poov tshuaj hydroxide, ammonia dej, stearic acid, thiab dej nyob rau hauv ib qho piv txwv, rau hauv cement mortar. Cov slurry muaj cov nyhuv plasticizing, uas tuaj yeem txo cov dej-cement piv thiab tsim ib txheej hydrophobic adsorption thiab insoluble tshuaj ntawm cov cement hais thiab slurry. Cov txheej txheem no thaiv cov capillary pores nyob rau hauv lub mortar hardened, txiav tawm thiab txo cov dej-permeable raws, tsub kom qhov ceev ntawm mortar, thiab endows nws nrog waterproof khoom.
Ultra-Early Strength Waterproof Mortar
Hom mortar no yog npaj los ntawm kev sib tov ib qho nyiaj tsawg-calcium aluminate hom ultra-thaum ntxov zog ntxiv nrog Portland cement (los yog cov cement zoo tib yam). Tus nqi ntawm cov khoom ntxiv tuaj yeem hloov kho raws li qhov ceev ntawm qhov project, nrog rau lub sijhawm teem sijhawm kho tau nyob rau hauv thaj tsam ntawm 1-45 feeb. Lub zog ultra-thaum ntxov lub zog tsis muaj dej tsis zoo muaj lub zog thaum ntxov, ruaj khov tom qab lub zog, thiab kev nthuav dav me ntsis, uas tuaj yeem txhim kho qhov tawg tsis kam thiab impermeability ntawm mortar.
Polymer Cement Waterproof Mortar
Qhov mortar no yog npaj los ntawm kev sib xyaw cov cement thiab ib qho polymer dispersion nrog xuab zeb. Tom qab hardening, lub polymer nyob rau hauv lub mortar zoo seals cov kev sib txuas qhov hws, ua rau kom ceev thiab tawg tsis kam ntawm lub mortar, yog li txhim kho nws impermeability thiab cuam tshuam tsis kam. Lub polymer dispersion yog cov khoom ua kua uas cov khoom siv polymer sib npaug sib npaug hauv dej los ntawm kev ntxiv qee qhov ntawm cov khoom siv polymer latex (xws li roj hmab hluavtaws, hluavtaws cob, roj hmab ntuj, thiab lwm yam) thiab cov khoom siv ntxiv (xws li emulsifiers, stabilizers, defoamers, curing agents, thiab lwm yam). Cov hom polymers muaj xws li cov organic silicon, cationic chloroprene latex, ethylene-vinyl acetate copolymer emulsion, styrene-butadiene roj hmab latex, thiab vinyl chloride-vinylidene chloride copolymer emulsion.
