Video: Qhov txawv ntawm 4000 psi thiab 5000 psi pob zeb yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Pob zeb footings thiab slabs ntawm qib feem ntau xav tau a pob zeb ntawm 3,500 rau 4, 000 psi . Tshem tawm cov slabs, kab teeb, thiab girders (raws li feem ntau pom nyob rau hauv cov choj) xav tau 3,500 rau 5, 000 psi . Ib txwm pob zeb cov phab ntsa thiab cov kab yuav muaj li ntawm 3,000 mus rau 5, 000 psi , thaum 4, 000 rau 5, 000 psi yog xav tau rau pavement.
Hauv qhov no, qhov txawv ntawm 4000 thiab 5000 psi pob zeb yog dab tsi?
Feem ntau, ntxiv dag zog pob zeb sib txawv nruab nrab 3,500 ib 4, 000 psi yog siv rau ntawm ko taw thiab slabs ntawm qib; nruab nrab 3,500 ib 5, 000 psi ntawm cov slabs, kab teeb thiab girders; thiab phab ntsa thiab kab ib txwm xav tau nruab nrab 3,000 rau 5, 000 psi . Thaum tsis muaj zog pob zeb yog siv txawv yuav tsum muaj zog.
Ib yam li ntawd, 5000 psi pob zeb siv rau dab tsi? Pob zeb uas tshaj 5,000 PSI yog siv nyob rau hauv tshwj xeeb kev tsim kho tej yaam num uas yuav tsum tau cov ntaub ntawv nyob rau hauv lub tsev uas muaj peev xwm tiv taus hnyav thiab hnyav hnyav thiab tsim kua muag.
Hais txog qhov no, 4000 psi pob zeb siv rau dab tsi?
4000 PSI pob zeb yog siv rau hnyav tsheb pavement, hnyav siv hauv pem teb slabs zoo li lub khw thiab warehouses, thiab pob zeb footings tsim los txhawb nqa hnyav.
Qhov txawv ntawm 3500 thiab 4000 psi pob zeb yog dab tsi?
MAIN txawv yog hauv tus nqi ntawm cement siv. Ib lub cubic yard ntawm pob zeb , seb nws yog 3000 psi los yog 4000 psi , hnyav txog 4000 phaus (thaum koj suav nrog qhov hnyav ntawm dej).
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
Qhov sib txawv ntawm 3000 psi thiab 4000 psi qhob yog dab tsi?
Qhov txawv ntawm 3000 Psi pob zeb VS 4000 Psi pob zeb yog dab tsi? Qhov sib txawv MAIN yog nyob rau hauv tus nqi ntawm cov cement siv. Ib lub cubic mev ntawm pob zeb, txawm tias nws yog 3000 psi lossis 4000 psi, hnyav txog 4000 phaus (thaum koj suav nrog qhov hnyav ntawm dej)
Dab tsi yog qhov txawv ntawm qhov ua tau zoo thiab cov khoom lag luam teb thiab cov ntsiab lus ntawm kev lag luam uas txhua qhov ua haujlwm zoo tshaj?
Lub tuam txhab muaj peev xwm ua kom tau raws li cov neeg siv khoom xav tau raws sijhawm yog hu ua Kev Ua Haujlwm Zoo, thaum ua haujlwm tau zoo yog lub tuam txhab muaj peev xwm xa khoom raws li tus neeg siv khoom xav tau nrog tsawg kawg ntawm cov khoom siv raw, kev ua haujlwm thiab tus nqi
Dab tsi yog qhov txawv ntawm pob zeb pob zeb thiab cov cement slab?
Qhov sib txawv ntawm cov cement thiab pob zeb Txawm hais tias cov ntsiab lus cement thiab pob zeb feem ntau siv sib hloov, cov cement yog cov khoom xyaw ntawm cov pob zeb. Lub pob zeb yog qhov sib xyaw ntawm cov khoom sib xyaw thiab muab tshuaj txhuam. Cov aggregates yog xuab zeb thiab gravel los yog crushed pob zeb; cov tshuaj nplaum yog dej thiab portland cement
Dab tsi yog qhov taw qhia ntawm pob zeb pob zeb?
Ib tug footing yog muab tso rau hauv qab ntawm Frost kab thiab ces cov phab ntsa ntxiv rau saum. Qhov taw qhia yog dav dua phab ntsa, muab kev txhawb nqa ntxiv ntawm lub hauv paus ntawm lub hauv paus. Lub hauv paus T-shaped yog muab tso rau thiab tso cai rau kho; thib ob, cov phab ntsa yog tsim; thiab thaum kawg, lub slab yog nchuav ntawm phab ntsa