Ntev Npaum Li Cas Gypsum Qhuav? Lub Sij Hawm Qhuav Rau Stucco Thiab Khoom Siv Tes Ua. Dab Tsi Ntxiv Kom Maj Mam Ua Kom Tawv?

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-18 12:13

Paub ntau npaum li cas gypsum qhuav yog qhov tseem ceeb heev tsis yog rau cov neeg tsim khoom xwb, tab sis kuj rau cov uas ua qee yam nrog lawv tus kheej tes. Lub sij hawm qhuav rau stucco thiab cov ntawv tsim khoom tuaj yeem sib txawv. Ntxiv nrog rau tus lej tus lej, koj yuav tsum paub dab tsi ntxiv txhawm rau txhawm rau txhawm rau ua kom tawv tawv, thiab qhov twg cov tshuaj ntxiv no cuam tshuam rau txheej txheem.

Lub sij hawm qhuav ntawm stucco

Ntawm no peb tsuas tuaj yeem hais txog qhov ntsuas nruab nrab, uas tau muab nrog kev hloov kho ruaj khov. Cov plaster huv tuaj yeem teeb tsa yam tsawg 10 feeb. Lub sijhawm kho siab tshaj plaws tsuas yog 25 feeb. Lub sijhawm teem ntawm alabaster yog luv dua, tsuas yog 5 txog 10 feeb.

Cov lej nruab nrab no tuaj yeem cuam tshuam los ntawm:

• cov npe khoom ntawm cov khoom siv, sib xws rau qhov tso cai thauj khoom rau 1 sq. cm (tsawg kawg 4 ntawm lawv tau paub tsuas yog hauv peb lub tebchaws);
• tus nqi dej siv hauv kev sib xyaw (tau kawg, nrog kev sib tov ntau dua, ob qho tib si gypsum thiab alabaster yuav tawv dua qeeb);
• cov av noo nyob ib puag ncig huab cua (cov txiaj ntsig zoo ib yam, txawm tias tsawg dua);
• qhov kub ntawm huab cua thiab dej siv rau kev sib xyaw, nrog rau qhov ntsuas kub ntawm phab ntsa thiab lwm yam qauv;
• feem raws li cov hmoov av;
• qhov tshwm sim ntawm ntau yam impurities thiab lawv muaj pes tsawg leeg.

Tab sis tseem, av noo thiab kub, nrog rau cov khoom lag luam ntawm lub npe, tsis txhob cuam tshuam ntau dhau. Lub sijhawm sib txawv tsis zoo li ntau dua 10-30%. Yog li ntawd, hauv daim ntawv ntshiab, ob qho tib si gypsum thiab alabaster tau npaj ua ntu ntu. Yuav tsum muaj raws nraim ntawm lawv raws li tuaj yeem thov hauv ob peb feeb . Txwv tsis pub, qee qhov ntawm cov khoom yuav ploj mus; qhov nyiaj xav tau yog txiav txim siab los ntawm kev txawj.

Txij li thaum alabaster feem ntau tsis siv rau hauv txheej ntau dua 1 cm, kev teeb tsa pib hauv 4 feeb . Kev ua tiav tuaj yeem ua tiav tom qab 60 feeb. Qhov siab tshaj plaws tau tiav tom qab 24 teev.

Cov neeg teeb tsa feem ntau poob siab los ntawm qhov ua tau zoo no, tshwj xeeb yog cov uas tsis muaj kev paub dhau los. Yog li ntawd, lawv siv cov tshuaj tshwj xeeb ntxiv.

Ntev npaum li cas cov hniav plaster siv kom qhuav?

Qee lub sij hawm rau cov neeg nyiam kos duab kos duab, plaster kuj tawv heev. Zoo li kev tsim kho, nws pib ua kom tawv tawv tom qab 4 feeb. Cov txheej txheem no txuas ntxiv mus rau lwm 26 feeb. Yog li ntawd, tag nrho lub sijhawm tawv tawv yog 30 feeb .… Qhov xaus yog qhov yooj yim heev thiab pob tshab: tsis muaj teeb meem nyuaj npaum li cas, koj yuav tsum siv zog siv cov tshuaj npaj tam sim ntawd.

Dab tsi ntxiv kom maj mam ua kom tawv?

Feem ntau siv citric acid . Peb grams ntawm cov tshuaj yog diluted hauv 1 liter dej. Yog tias koj siv mis hmoov hloov cov kua qaub, koj yuav tsum tau muab 10 g. Cov nyiaj tib yam siv lo lus MC Tag nrho cov tshuaj reagents no ua tib yam nkaus - lawv tso cai ua kom lub sijhawm ua kom khov tau ntev txog ¼ teev.

Tom qab qhov kawg ntawm kev teeb tsa, lawv yuav tsis cuam tshuam rau qhov zoo ntawm cov khoom siv tes ua thiab nws qhov tsos.

Ntxiv thov:

• PVA kua nplaum (25% ntawm qhov ntim dej hauv kev daws);
• mis rog cov ntsiab lus los ntawm 3, 2% hauv tus nqi ntawm 10-20% ntawm cov ntim dej;
• rooj vinegar (60 g rau 0.5 l) - cov tshuaj reagent zoo, raws li tus naj npawb ntawm cov kws sau ntawv, nce lub sijhawm ua kom khov los ntawm 50 feeb;
• ntxhua khaub ncaws / kua xab npum - feem, 100 g lossis 200 g rau 1 liter (teeb tsa lub sijhawm nce los ntawm 20-30 feeb);
• tshaj lij yas yas (qee zaum hu ua retarders).