Cov neeg uas twb tau ua haujlwm nrog cov cement cug, tuaj yeem hnov tias qee tus masters uas tau muaj qee yam ntxiv rau nws zawv plaub hau (lossis lwm yam khoom txawv txawv). Ntawm tus neeg paub txog lub wizard, cov lus nug ncaj ncees tshwm sim tias vim li cas ntxiv qee yam ntxiv superfront hauv cov cement? Nws yog qhov tseem ceeb tshaj li kom nkag siab tias kev sib xyaw no yuav tsis ua mob.
Muaj cov qauv tsim khoom
Cesent cug yog yooj yim, muaj pov thawj nyob rau hauv ntau pua xyoo thiab vim yog ib qho tshwm sim, ib qho ntawm feem ntau nrhiav-tom qab tsim cov ntaub ntawv ntawm kev ua lag luam. Txhawm rau txhim kho qhov zoo ntawm cov kev daws teeb meem xis mas, ntau yam yas ua kom tau siv. Vim lawv, txoj kev daws yuav tau txais qee yam zoo thiab qhov zoo. Raws li txoj cai, cov kws tshaj lij Faib cov npe hauv qab no:
1. Txo cov dej ntws thiab daws teeb meem daws teeb meem
2. txhim kho cov qos tsis kam thiab noo noo tsis kam
3. Txhim kho cov yas thiab adhesion nrog fittings
4. Yooj yim rau kev sau thiab foob, ntxiv rau kev faib tawm ntau dua ntawm kev daws teeb meem
5. Yooj yim yooj yim dismantling formwork
6. Ua kom muaj kev siv lub ceg xis xis thiab hloov ntawm lub sijhawm lub sijhawm kom tshem tawm cov kev ua yuam kev
Muaj cov txheej txheem pej xeem.
Thaum nws los txog rau lub chaw tsim kho loj-, cov tuam txhab tau yuav khoom siv tshwj xeeb thiab siav tus sawv cev. Cov kab hauv qab yog cov tshuaj ntxuav cov kua tshuaj tau muaj tib puag ncig alkaline, ntxiv rau cov xis mas yog li siv tau.
Nws yog ib qho tseem ceeb : Thaum siv ob txhais cov lus siv thiab cov kev nkas muaj zog, cement cug yuav tsum tau sib xyaw kom huv si. Tsis tas li ntawd, cov tshuab ziab khaub ncaws yuav tsum tsis pub tshaj 5% ntawm tag nrho cov pawg ntawm kev daws.
Yuav yog li ntawd.
Raws li txoj cai, cov yas yas tau ntxiv thaum pib ntawm kev npaj ntawm kev daws teeb meem hauv lub xeev ua kua. Thaum nws los txog rau cov tshuaj hamicraft, lawv tau ua ntej-yaj hauv dej. Los ntawm 50 kg ntawm cov ntseeg tau li ntawm 200 ml ntawm cov kua tshuaj.