Kev tsim cov gypsum-based self-leveling mortars yuav tsum tau siv ntau yam khoom siv raw, txhua yam uas cuam tshuam rau cov yam ntxwv tshwj xeeb ntawm cov khoom kawg. Ib qho tseem ceeb ntawm cov self-leveling mortar yog cellulose ether, uas yog ib qho tseem ceeb additive.
Cov tshuaj gypsum uas ua raws li tus kheej: kev txheeb xyuas
Cov tshuaj mortar uas ua rau nws tus kheej sib npaug yog ib yam khoom siv tshwj xeeb uas tsim los rau kev siv hauv pem teb uas xav tau qhov chaw du thiab tiaj tus. Cov tshuaj mortar no feem ntau muaj cov khoom sib txuas, cov pob zeb sib xyaw thiab ntau yam khoom ntxiv kom ua tiav cov yam ntxwv tshwj xeeb. Gypsum yog ib yam khoom siv ntuj tsim uas feem ntau siv ua cov khoom sib txuas tseem ceeb hauv cov tshuaj mortar uas ua rau nws tus kheej sib npaug vim nws cov yam ntxwv tshwj xeeb, suav nrog kev teeb tsa sai thiab ua haujlwm tau zoo heev.
Cov ntaub ntawv raw rau gypsum-based self leveling mortar:
1. Gypsum:
Qhov Chaw: Gypsum yog ib qho mineral uas tuaj yeem khawb tau los ntawm cov chaw tso nyiaj ntuj.
Kev Ua Haujlwm: Gypsum ua haujlwm ua tus khi tseem ceeb rau cov mortar uas nws tus kheej sib npaug. Nws pab kom nws khov sai thiab muaj zog.
2. Kev sib sau ua ke:
Qhov Chaw: Aggregate yog los ntawm cov av qeeg ntuj lossis pob zeb tawg.
Lub Luag Haujlwm: Cov pob zeb sib xyaw, xws li xuab zeb lossis cov pob zeb me me, muab qhov loj rau cov mortar thiab cuam tshuam rau nws cov khoom siv kho tshuab, suav nrog lub zog thiab kev ruaj khov.
3. Cellulose ether:
Qhov Chaw: Cellulose ethers yog los ntawm cov cellulose ntuj xws li ntoo pulp lossis paj rwb.
Kev Ua Haujlwm: Cellulose ether ua haujlwm ua tus hloov kho rheology thiab tus neeg sawv cev khaws dej kom txhim kho kev ua haujlwm, kev nplaum thiab kev ua tau zoo ntawm cov tshuaj khib nyiab.
4. Tus neeg sawv cev txo dej ua haujlwm zoo:
Qhov Chaw: Superplasticizers yog cov polymers hluavtaws.
Kev Ua Haujlwm: Tus neeg sawv cev txo dej ua haujlwm zoo dua qub txhim kho qhov fluidity thiab workability ntawm mortar los ntawm kev txo cov dej hauv cov dej, ua rau nws yooj yim dua rau kev tso thiab theem.
5. Tshuaj tiv thaiv kev qaug zog:
Qhov Chaw: Cov tshuaj tiv thaiv feem ntau yog ua los ntawm cov organic compounds.
Kev Ua Haujlwm: Tus neeg ncua sijhawm tuaj yeem ua rau lub sijhawm teeb tsa ntawm cov mortar qeeb dua, txuas ntxiv lub sijhawm ua haujlwm thiab txhawb cov txheej txheem leveling.
6. Kev Sau:
Qhov Chaw: Cov khoom sau tuaj yeem yog ntuj (xws li limestone) lossis hluavtaws.
Kev Ua Haujlwm: Cov khoom sau ua rau muaj qhov ntim ntawm cov mortar, ua kom nws qhov ntim ntau ntxiv thiab cuam tshuam rau cov khoom xws li qhov ceev thiab thermal conductivity.
7. Fiber:
Qhov Chaw: Cov fibers tuaj yeem yog cov ntuj (piv txwv li cellulose fibers) lossis cov khoom siv hluavtaws (piv txwv li polypropylene fibers).
Kev Ua Haujlwm: Cov fibers ua rau lub zog tensile thiab flexural ntawm cov mortar thiab txo qhov kev pheej hmoo ntawm kev tawg.
8. Dej:
Qhov Chaw: Cov dej yuav tsum huv thiab haum rau haus.
Kev Ua Haujlwm: Dej yog qhov tseem ceeb rau cov txheej txheem hydration ntawm plaster thiab lwm yam khoom xyaw, pab txhawb rau kev txhim kho lub zog ntawm mortar.
Txheej Txheem Tsim Khoom:
Kev npaj cov khoom siv raw:
Gypsum yog mined thiab ua tiav kom tau txais cov hmoov zoo.
Cov khoom sib sau ua ke raug sau thiab tsoo kom loj li qhov xav tau.
Cellulose ethers yog tsim los ntawm cov cellulose los ntawm kev ua tshuaj lom neeg.
sib tov:
Cov gypsum, cov khoom sib xyaw ua ke, cellulose ethers, superplasticizer, retarder, fillers, fibers thiab dej raug ntsuas thiab sib xyaw kom raug kom ua tiav qhov sib xyaw ua ke.
Kev Tswj Xyuas Zoo:
Cov khoom sib xyaw ua ke raug kuaj xyuas kom zoo kom ntseeg tau tias nws ua tau raws li qhov sib xws, lub zog thiab lwm yam qauv kev ua tau zoo.
Pob:
Cov khoom kawg yog ntim rau hauv cov hnab lossis lwm lub thawv rau kev faib tawm thiab siv rau ntawm cov chaw tsim kho.
xaus lus:
Kev tsim cov gypsum-based self-leveling mortars yuav tsum tau xaiv thiab sib xyaw ua ke ntawm cov khoom siv raw kom ua tiav cov yam ntxwv xav tau. Cellulose ethers ua lub luag haujlwm tseem ceeb ua cov khoom ntxiv uas txhim kho kev ua haujlwm, kev nplaum thiab kev ua tau zoo ntawm cov mortar. Raws li kev lag luam kev tsim kho txuas ntxiv mus, kev tshawb fawb thiab kev txhim kho hauv kev tshawb fawb txog cov ntaub ntawv yuav ua rau muaj kev txhim kho ntxiv hauv cov mortars self-leveling, suav nrog kev siv cov khoom ntxiv tshiab thiab cov khoom siv raw ruaj khov.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-11-2023