Yuav ua li cas yog cov pob zeb ntub dej heev?
Yuav ua li cas yog cov pob zeb ntub dej heev?

Video: Yuav ua li cas yog cov pob zeb ntub dej heev?

Video: Yuav ua li cas yog cov pob zeb ntub dej heev?
Video: Keeb Puam: Yuav Ua Cas Yog Nej (17/12/2021) 2024, Kaum ib hlis
Anonim

Thaum twg muaj ib yam nkaus dej ntau hauv pob zeb , muaj ntau dua shrinkage nrog muaj peev xwm rau ntau qhov tawg thiab txo compressive zog. Raws li txoj cai dav dav, txhua nti ntxiv ntawm kev poob qis qis zog los ntawm kwv yees li 500 psi.

Xav txog qhov no, cov pob zeb puas yuav qhuav yog tias ntub dhau?

Ib qho mix uas yog ntub dhau tej zaum yuav zoo qhuav los ntawm kev ntxiv cement , tab sis tsis txhob xav tias muaj yuav tsis yog yuav tshwm sim. Qhuav shrinkage ua ib. Tsis tas li, yog tsuas yog sab saum toj ntawm slab yog raug rau qhov sib ntxiv, ces hauv qab yuav ua tsis muaj zog. Thirdly, koj tso cai rau cement pib reacting nrog cov dej sib tov.

Tsis tas li ntawd, lub pob zeb tshiab yuav tsum khaws cia ntub ntev npaum li cas? cav 7d

Tsis tas li lo lus nug yog, yuav ua li cas yog tias mortar ntub dhau?

Cug yog ntub dhau yuav khiav tawm ntawm cov pob qij txha. Yog nws yog ib yam nkaus qhuav, daim ntawv cog lus yuav tsis muaj zog. Cia tus mortar sawv ntsug li 5 feeb, ces sib tov dua ua ntej siv nws. Yog qhov sib tov yog soupy, txo tus nqi ntawm cov dej.

Yuav ua li cas yog pob zeb qhuav dhau lawm?

Yog nws qhuav ib yam nkaus sai sai, nto ntawm lub pob zeb yuav tsis muaj zog, thiab yuav raug spalling. Spalling tshwm sim thaum ib tug qaug zog nto txheej ntawm pob zeb tso cai rau dej nkag mus. Cov dej khov thiab tawg tuaj ntawm qhov chaw pob zeb.

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