Video: Qhov kub zoo tshaj plaws rau ncuav pob zeb yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
ntawm 50-60 ° F.
Yog li ntawd, nws puas yog qhov zoo rau ncuav pob zeb hauv huab cua txias?
Tsis txhob ncuav pob zeb tshaj hauv av khov, daus, lossis dej khov. Pob zeb hauv huab cua txias pom zoo kom muaj qhov qis qis, thiab dej tsawg heev rau cement ratio, txo los ntshav thiab txo lub sij hawm teem. Siv pob zeb kho daim pam tiv thaiv khov thiab khaws cov pob zeb ntawm qhov zoo curing kub.
Dab tsi yog lub sijhawm zoo tshaj plaws los nchuav pob zeb? Cov neeg feem coob xav tias qhov lub sijhawm zoo tshaj plaws los ncuav thiab ua kom tiav pob zeb yog nyob rau hnub tshav ntuj, breezy, kub hnub. Tsis yog! Cov zoo tshaj plaws Cov txiaj ntsig tuaj yeem ua tiav yog tias koj ncuav pob zeb Nyob rau ib hnub overcast, damp nrog huab cua kub nyob ib ncig ntawm 55 F. Yog hais tias qhov kub thiab txias yuav tsum nyob ntawm 55 F rau peb mus rau plaub hnub, nws yuav yog zoo tagnrho.
Kuj Paub, qhov tsawg kawg nkaus thiab qhov siab tshaj plaws ntawm pob zeb yog dab tsi?
Qhob Kub txwv
| Qhov loj me ntawm cov seem, cm | Qhov ntsuas kub tsawg kawg ntawm cov pob zeb tau muab tso rau thiab khaws cia thaum lub sijhawm tiv thaiv, ° C |
|---|---|
| Tsawg dua 30.48 | 12.77 |
| 30.48 txog 91.44 | 10 |
| 91.44 rau tsawg dua 182.88 | 7.22 |
| Ntau tshaj 182.88 | 4.44 |
Puas yuav kho pob zeb ntawm 40 degrees?
Rau siab-thaum ntxov zog pob zeb uas yuav tsis raug rau lub voj voog khov-thaw, ib hnub ntawm qhov kub siab tshaj 40 degrees txaus. Tab sis a pob zeb foundation lossis lwm yam qauv uas yuav nqa cov khoom hnyav thaum muaj hnub nyoog ntxov yuav tsum tau 20 hnub lossis ntau dua ntawm qhov ntsuas kub tsawg kawg ntawm 50 qib.
Pom zoo:
Yuav ua li cas yog qhov tsawg kawg nkaus pob zeb npog nyob rau hauv mm ntawm ib tug cam khwb cia nyob rau hauv qhov chaw pob zeb tso tawm tsam thiab mus tas li raug rau lub ntiaj teb?
Table-1: Yam Tsawg Npog Thickness rau Cast-in-Place Qhob Hom kev tsim ua vaj tse hla, hli Qhob nrum tiv thaiv thiab txuas mus tas li nrog hauv av 75 Pob zeb sib chwv nrog av lossis dej No. 19 txog No. 57 tuav 50 No. 16 bar thiab me dua 40
Dab tsi yog qhov siab tshaj plaws rau lub pob zeb pob zeb?
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Dab tsi yog qhov zoo tshaj plaws cement rau pob zeb?
Dab tsi yog cov cement zoo tshaj plaws rau kev tsim vaj tsev? Ordinary Portland Cement (OPC) 43 Qib Cement: Nws yog siv feem ntau rau cov phab ntsa plastering, Non-RCC cov qauv, txoj kev thiab lwm yam. Ordinary Portland Cement (OPC), 53 GradeCement: Portland Pozzolana Cement (PPC): Portland Slag Cement (PSC) : Dawb Cement:
Dab tsi yog qhov sib xyaw zoo tshaj plaws rau pob zeb?
Lwm 'txoj cai qub ntawm tus ntiv tes xoo' rau kev sib xyaw ua vaj tse yog 1 cement: 2 xuab zeb: 3 gravel los ntawm ntim. Sib tov cov khoom xyaw qhuav thiab maj mam ntxiv dej kom txog thaum lub pob zeb ua haujlwm. Qhov sib tov no yuav tsum tau hloov kho nyob ntawm qhov sib xyaw siv los muab cov pob zeb ua haujlwm zoo
Dab tsi yog qhov sib xyaw zoo tshaj plaws rau cov pob zeb pob zeb?
Kev sib xyaw ua ke ntawm 1 feem ntawm cov cement: 2 qhov chaw xuab zeb: 4 qhov sib xyaw ua ke (los ntawm ntim) yuav tsum tau siv rau kev taw qhia. Cov pob zeb yuav tsum tau muab tso rau hauv ib nrab ib teev ntawm kev sib tov.Brickwork - Muab koj cov pob zeb tso rau hauv koj lub trench