Nws siv sijhawm ntev npaum li cas rau hluav taws cement kom qhuav?
Nws siv sijhawm ntev npaum li cas rau hluav taws cement kom qhuav?

Video: Nws siv sijhawm ntev npaum li cas rau hluav taws cement kom qhuav?

Video: Nws siv sijhawm ntev npaum li cas rau hluav taws cement kom qhuav?
Video: sawv ntxov tag ki no nlpog thauj Vuas thiab ntoo tuaj txog lawm 2024, Kaum ib hlis
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Sai li sai tau, maj mam ua kom sov kom qhuav ntawm qhov chaw kho, maj mam nce cov cua sov kom tag nrho ua haujlwm kub dhau 3-4 teev.

Ib yam li ntawd, nws yuav siv sijhawm ntev npaum li cas rau qhov cub cement kom qhuav?

Damp qhov chaw maj mam nrog dej thiab siv cement . Tam sim ntawd ntxuav ntau dhau cement nrog dej sov kom tiv thaiv kom txhob etching mus tas li. Cua qhuav tsawg kawg ib teev. Tsis pub dhau 30 hnub, kub maj mam mus rau 500 ° F kom kho.

Tsis tas li ntawd, ua li cas koj thiaj li tau hluav taws xob cement tawm ntawm qhov cub? Thaum lub qhov cub yog txias tshem tawm ib qho yooj yim tshem tawm hluav taws cement daim. Koj tuaj yeem siv lub taub hau me me los pab koj xaiv qee qhov ntawm no kom ceev faj tsis txhob nti cov vitreous enamel ntawm lub raj xa dej. Nqus ib ncig ntawm lub foob rau tshem tawm tej plua plav residue thiab hluav taws cement pieces lwm.

Xav txog qhov no, lub qhov cub hluav taws xob yuav siv sij hawm ntev npaum li cas kom qhuav?

FIRE EXPOSURE Cua qhuav rau 1 txog 30 hnub. Cov khoom yuav tsum tsis pub dawb. Pib qhov hluav taws kub qis, ua kom kub qis dua 212oF (100oC) kom txog rau thaum lub mortar muaj qhuav kom huv si, feem ntau ib mus rau plaub teev. Ib zaug qhuav , nce cua sov rau 500oF (260oC) rau kev kho zaum kawg; cua sov rau 1-4 teev lossis ntau dua.

Qhov hluav taws kub cement yog dab tsi?

Ntau qhov cub hluav taws kub, qhov cub thiab qhov cub yog tsim los ntawm cov khoom siv hluav taws xob hluav taws xob lossis lwm yam khoom siv hluav taws xob uas hu ua refractory qhob. Kev lag luam, fireproof qhob yog ua los ntawm kev sib xyaw cov khoom hu ua ya tshauv, ib qho khoom siv los ntawm kev tsim khoom ntawm Portland cement.

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