Hnub Kawg: 20, Peb,2025
Dab tsi yog cov khoom yuav tsum tau rau gypsum self-leveling mortar?
1. Active admixtures: Self-leveling cov ntaub ntawv siv tau ya tshauv, slag hmoov, thiab lwm yam active admixtures los txhim kho particle loj tis thiab txhim khu lub zog ntawm cov khoom hardened. Slag hmoov undergoes hydration nyob rau hauv ib tug alkaline ib puag ncig, ua rau cov khoom structural ceev thiab tom qab lub zog.
2. Cov khoom siv cementitious thaum ntxov: txhawm rau ua kom lub sijhawm tsim kho, cov ntaub ntawv qib siab tus kheej muaj qee yam kev xav tau rau lub zog thaum ntxov (feem ntau 24-teev flexural thiab compressive zog). Sulphoaluminate cement yog siv los ua cov khoom siv cementitious thaum ntxov. Sulphoaluminate cement hydrates sai thiab muaj zog thaum ntxov, ua tau raws li cov cai no.
3. Alkaline activator: Gypsum composite cementitious cov ntaub ntawv ua tiav lawv qhov siab tshaj plaws qhuav lub zog nyob rau hauv nruab nrab alkaline tej yam kev mob. Quicklime thiab 32.5 cement tuaj yeem siv los kho cov pH los tsim ib qho chaw alkaline rau dej.
4. Teem lub accelerator: Teem lub sij hawm yog qhov tseem ceeb ntawm kev ua tau zoo ntawm cov ntaub ntawv tus kheej. Teem sijhawm luv luv lossis ntev dhau los ua rau muaj kev puas tsuaj rau kev tsim kho. Lub coagulant txhawb kev ua haujlwm ntawm gypsum, ua kom cov supersaturated crystallization ntawm dihydrate gypsum, ua kom lub sijhawm teem sijhawm, thiab ua kom lub sijhawm teem thiab hardening ntawm tus kheej-leveling khoom nyob rau hauv ib tug tsim nyog ntau yam.
5. Dej Reducer: Txhawm rau txhim kho qhov ntom thiab lub zog ntawm cov khoom siv tus kheej, qhov sib piv ntawm cov dej-rau-cement yuav tsum raug txo. Thaum tswj kom zoo fluidity, ntxiv cov dej reducer yog tsim nyog. Cov dej-txo mechanism ntawm naphthalene-raws li dej reducer yog cov sulfonic acid pawg nyob rau hauv naphthalene-raws li dej reducer molecules hydrogen-bond nrog dej molecules, tsim ib tug ruaj khov dej zaj duab xis nyob rau saum npoo ntawm cov khoom cementitious. Qhov no ua kom yooj yim rau zawv zawg ntawm cov khoom siv, txo qhov sib xyaw dej xav tau thiab txhim kho cov qauv ntawm cov khoom siv tawv.
6. Dej Retention Agent: Self-leveling cov ntaub ntawv yog siv rau ntawm ib tug nyias txheej txheej, ua rau lawv yooj yim absorbed los ntawm lub hauv paus txheej. Qhov no tuaj yeem ua rau muaj dej tsis txaus, tawg tawg, thiab txo lub zog. Hauv qhov kev sim no, methylcellulose (MC) tau raug xaiv los ua tus neeg saib xyuas dej. MC nthuav tawm cov dej ntub dej zoo, khaws cia dej, thiab cov khoom ua yeeb yaj kiab, tiv thaiv dej exudation thiab ua kom muaj dej puv ntawm cov khoom siv tus kheej.
7. Redispersible polymer hmoov (tom qab no hu ua polymer hmoov): Polymer hmoov tuaj yeem ua kom cov elastic modulus ntawm tus kheej-leveling cov ntaub ntawv, txhim kho nws cov tawg tsis kam, daim ntawv cog lus zog, thiab dej tsis kam.
8. Defoaming tus neeg saib xyuas: Defoaming cov neeg ua haujlwm tuaj yeem txhim kho cov khoom nto ntawm cov khoom siv tus kheej, txo cov npuas thaum lub sij hawm molding, thiab pab txhawb lub zog ntawm cov khoom.
Post lub sij hawm: Oct-20-2025