Lub luag haujlwm ntawm dej tuav cov neeg sawv cev sib xyaw rau hauv Gypsum hmoov cov khoom?
Teb: plastering gypsum, bonded gypsum, caulking gypsum, gypsum putty thiab lwm cov khoom siv hmoov av siv. Txhawm rau pab txhawb kev tsim kho, gypsum retardrers yog ntxiv ntxiv thaum lub sij hawm tsim khoom kom ntev lub sijhawm tsim kho ntawm gypsum slurry. Tus retarder tau ntxiv rau inhibit cov txheej txheem hydration ntawm cov kev hemihydrate gypsum. Cov pob zeb ntawm gypsum yuav tsum khaws cia rau ntawm phab ntsa rau 1 txog rau cov phab ntsa uas muaj zog, yog li cov pa hluav taws xob tsis zoo, yog li cov pa hluav taws xob tsis zoo, yog li cov pa hluav taws xob tsis zoo, yog li cov pa hluav taws xob tsis zoo slurry tawv tawv thiab co cawv. Ua kom tiav, ua rau kev sib cais thiab plhaub ntawm cov sib koom ua ke ntawm cov plaster thiab phab ntsa saum npoo av. Qhov kev sib ntxiv ntawm cov dej-tswj tus neeg sawv cev yog tswj kom noo noo muaj nyob rau hauv gypsum slurry, kom ntseeg tau tias cov pa dej tawm ntawm lub interface, yog li kom ntseeg tau tias lub zog uas muaj zog. Feem ntau siv dej-ceev cov neeg sawv cev yog cov neeg muaj kev hais txog cellulose, HYCC), Hydroth Cellulose, muaj cov hmoov av methyl, thiab lwm yam los txhim kho cov dej ua kom ua tau zoo.
Tsis muaj teeb meem dab tsi ntawm cov dej-tswj dej yuav ncua cov hydration tus nqi ntawm cov neeg uas tsis hloov pauv, thaum tus nqi ntawm cov neeg sawv cev tsis hloov pauv, cov dej-tuav tus neeg sawv cev tuaj yeem ua rau 15-30 feeb. Yog li ntawd, tus nqi ntawm retarder tuaj yeem raug txo qis.
Dab tsi yog qhov ua kom zoo ntawm dej tuav tus neeg sawv cev hauv gypsum hmoov khoom?
Teb: Dej-tuav cov neeg sawv cev feem ntau siv hauv cov khoom hmoov av zoo xws li plastering gypsum, tsevneeg ua ke, gaulking gypsum, thiab gypsum putty. Vim tias hom gypsum no sib xyaw nrog tus txheej txheem hemsum, nws yog ib qho tsim nyog los tiv thaiv ib feem Qhov kev sib ntxiv ntawm cov dej-tswj tus neeg sawv cev yog tswj kom noo noo muaj nyob rau hauv gypsum slurry, kom ntseeg tau tias cov pa dej tawm ntawm lub interface, yog li kom ntseeg tau tias lub zog uas muaj zog.
Nws koob tshuaj yog feem ntau 0.1% rau 0.2% (xws li npaj cov pob zeb ua paug, thiab thaum npaj cov roj av muaj zog, thiab thaum npaj cov dej sib tw, cov dej uas tau txais loj dua (feem ntau 0.2% mus rau 0.5%).
Dej-tswj cov neeg sawv cev xws li methyl cellulose (MC) thiab hydroxypropylulose (Holmc) yog cov qog txias (HPMC) yog cov qog txias Cov neeg sawv cev rau cov dej uas yuav tsum tau sib xyaw ua ntej nrog Gypsum hmoov kom tawg. Npaj ua hmoov qhuav; Ntxiv dej thiab do, cia sawv ntsug li 5 feeb, do dua, cov nyhuv yog qhov zoo dua. Txawm li cas los xij, muaj cov khoom siv ntawm cellulose tam sim no ether cov khoom lag luam uas tuaj yeem ua rau muaj cov nyhuv me me ntawm kev tsim cov hmoov av qhuav.
Tus neeg sawv cev Waterproof ua haujlwm li cas Waterproof muaj nuj nqi hauv Gypsum Hardenive lub cev?
Teb: sib txawv hom waterproofing agents tau siv lawv cov kev ua haujlwm tsis muaj zog hauv lub cev tsis muaj zog raws li cov qauv sib txawv. Yeej yuav yog cov ntsiab lus rau hauv plaub txoj kev:
(1) Txo cov solubility ntawm lub cev ua kom tawv nqaij tawv, thiab siv lub zog ua kom siab rau hauv cov ntsev tsis zoo nrog cov solubility. Piv txwv li, saponified battent fatty acid muaj C7-C9 ntxiv, thiab tsim nyog muaj nuj nqis ntawm QuickLime thiab ammonium borate tau ntxiv tib lub sijhawm.
(2) Tsim cov duab lim dej waterproof los thaiv cov corillary pores hauv lub cev tawv. Piv txwv li, kev sib tsoo emulsion, asphalt emulsion, rosaffin-rosin composite emulsion, txhim kho asphalt concultite emulsion, thiab lwm yam.
(3) hloov lub zog saum lub zog ntawm lub cev tawv, yog li cov lwg dej nyob hauv lub xeev cohesive thiab tsis tuaj yeem nkag mus rau hauv cov capillary raws. Piv txwv li, ntau yam kev tshuaj yej dej siicone dej tau sib xyaw, suav nrog ntau yam emulsified Silicone roj.
(4) los ntawm txheej sab nraud lossis tshem tawm hauv dej cais los ntawm kev raus dej hauv cov capillarrary raws ntawm lub cev tawv, muaj ntau yam ntawm cov tshuaj uas siliconeofprofing tuaj yeem siv tau. Cov kuab tshuaj raws li cov silicones zoo dua li cov dej uas muaj dej xau, tab sis cov qub ua rau lub cev muaj roj av tsis kam.
Txawm hais tias cov neeg tsis muaj dej uas txawv tuaj yeem siv los txhim kho cov khoom siv dej ntawm kev sib txawv, uas tsis haum rau ib puag ncig nrog kev hloov chaw ntub thiab qhuav.
Dab tsi yog kev hloov kho ntawm lub tsev gypsum los ntawm waterproofing neeg sawv cev?
Teb: Muaj ob txoj kev tseem ceeb ntawm gypsum waterproofing tus neeg sawv cev: thiab lwm qhov yog kom txo cov ntaub ntawv nqus dej ntawm gypsum. Thiab txo cov dej nqus dej tuaj yeem ua tau los ntawm ob yam. Ib qho yog kom nce cov kev cog lus ntawm lub happsum tawv, uas yog, txhawm rau txo cov dej tsis sib haum thiab cov kab nrib pleb, yog li txhawm rau txhim kho cov dej tsis kam ntawm Gypsum. Lwm tus yog kom nce lub zog saum npoo ntawm lub cev gypsum tau tawv, uas yog, txhawm rau txo cov dej pore nto fydrophobic zaj duab xis.
Cov neeg sawv cev uas tsis muaj dej uas txo qhov porosity ua lub luag haujlwm los ntawm kev thaiv cov hws zoo ntawm gypsum thiab nce cov kev cog lus ntawm gypsum lub cev. Muaj ntau ntau admixtures rau kev txo porosity, xws li: pataffin emulsion, asphalt emulsion, Rosin emulsion thiab parapin asposite emulsion. Cov neeg ua haujlwm tsis muaj dej yog qhov ua tau zoo hauv Gypsum nyob rau hauv Godsum nyob rau hauv tib lub sijhawm, lawv kuj muaj kev cuam tshuam tsis zoo ntawm gypsum cov khoom lag luam.
Cov tshuaj tiv thaiv dej feem ntau cov dej pleev cov dej uas hloov lub zog saum npoo yog silicone. Nws tuaj yeem Infiltrate chaw nres nkoj ntawm txhua lub zog, hloov lub zog saum toj tsis muaj dej, thiab yog li hloov cov dej, thiab tib lub sijhawm muaj huab cua sib xyaw ua ke ntawm plaster. Cov ntau yam ntawm cov hom waterproofing tus neeg sawv cev tsuas yog suav nrog: socomone resinate, thiab lwm lub sijhawm uas nws tsis tuaj yeem tiv thaiv cov teeb meem ntev dhau los, thiab cov dej noo yog pov thawj cov teeb meem ntawm cov khoom lag luam gypsum.
Cov kws tshawb fawb hauv tsev siv cov qauv organic thiab cov khoom siv hluav taws xob waterproofing waterproofing yog ua los ntawm compounding ntsev waterproofing tus neeg sawv cev. Tus Gypsum Composite Waterproofing Tus neeg sawv cev ua ke nrog Gypsum thiab dej, koom nrog hauv cov txheej txheem crystallization ntawm gypsum, thiab tau txais cov nyhuv zoo dua.
Dab tsi yog inhiscitia cov nyhuv ntawm cov zaub mov nqaij lim dej ntawm effLorescence hauv gypsum tshuaj khib?
Teb: (1) Ntxiv rau ntawm cov neeg muaj dej sib ntxiv ntawm cov kab tshuaj khib nyiab uas muaj kev cuam tshuam nrog kev ua kom zoo nkauj ntawm gypsum kev sib cav ntxiv nrog cov xoom ntxiv hauv qee qhov ntau. Lub inisabitos nyhuv ntawm cov sopane ntawm 0.4% Sia Ave yog qhov zoo tshaj plaws, thiab nws Inhibosity cuam tshuam yuav ruaj khov thaum tus nqi tshaj qhov nyiaj no.
(2) Ib qho ntxiv ntawm cov kab ua si kom tsis txhob ua rau cov dej khib nyiab ntawm cov ntoo khaub hlab sab nraud, tab sis kuj txhim kho cov nyhuv effegitoses cuam tshuam ntawm effhlorescence.
(3) Thaum ntxiv rau ntawm cov chaw ua kom zoo, nws tsis muaj kev phom sij ntawm cov khoom lag luam sab hauv thiab tsis muaj peev xwm siv tau los ntawm cov khoom lag luam sab hauv thiab cov khoom lag luam.
Lub Sijhawm Post: Nov-22-2022