Puas yog pob zeb zoo dua li cement?
Puas yog pob zeb zoo dua li cement?

Video: Puas yog pob zeb zoo dua li cement?

Video: Puas yog pob zeb zoo dua li cement?
Video: Yexus Yog Lub Pob zeb ruaj khov- Xf. txawj Pes Vaj - ( Acoustic version ) cover: Simon Thao 2024, Kaum ib hlis
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Pob zeb yog ruaj dua tshaj li cement.

Yog lawm, pob zeb tuaj yeem kav ntau pua xyoo, tab sis cement yog ntau tsawg ruaj. Yuav kom siv ib tug analogy, cement yog to pob zeb zoo li mis nyuj rau ice cream. Tseeb, ice cream muaj mis nyuj nyob rau hauv nws, tab sis nws tsis yog mis nyuj. Nws yog tiag tiag ntau zoo dua.

Hauv qhov no, cov cement muaj zog dua li pob zeb?

Pob zeb yog qhov sib xyaw ntawm cov dej, cement , xuab zeb ib yam li mortar. Txawm li cas los pob zeb kuj muaj gravel thiab lwm yam coarse aggregates uas ua rau nws muaj zog dua thiab ruaj khov dua. Pob zeb muaj dej tsawg-rau- cement ratio thiab yog ib tug thinner sib xws tshaj mortar.

Tsis tas li ntawd, cov cement tuaj yeem siv los ntawm nws tus kheej? Cement yog hmoov zoo khi uas yeej tsis yog siv ib leeg tab sis yog ib feem ntawm ob qho tib si ua vaj tse thiab cug, nrog rau stucco, pobzeb grout, thiab txheej txheej nplaum. Cug yog tsim los ntawm cement , nplua xuab zeb thiab txiv qaub; nws yog siv ib qho khoom siv khi thaum tsim nrog cib, thaiv, thiab pob zeb.

cement muaj zog npaum li cas?

Nws yog pob zeb uas yog muaj zog txaus los nqa qhov kev ntxhov siab ntawm 3,000 psi ntawm 28 hnub. Qhob kuj yuav raug teev nyob rau hauv lwm yam zog thiab. Pas ua vaj tse muaj zog ntawm 7,000 psi los yog tsawg dua; pob zeb nrog lub zog ntawm 7,000 thiab 14, 500 psi yog suav tias yog cov pob zeb muaj zog.

Yuav ua li cas koj qhia tau los ntawm pob zeb?

Nyob rau hauv dav dav, lo lus cement yog hais txog txhua yam ntaub ntawv uas tuav tau lwm yam ntaub ntawv ua ke. Pob zeb , ntawm qhov tod tes, yog cov khoom sib xyaw xws li xuab zeb, gravel, thiab pob zeb me me ua ke nrog txhua yam cement thiab dej. Tom qab ntawd lub concoction yog tso cai rau qhuav thiab harden.

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