Yuav ua li cas sib tov cement los ua mortar ntawm pob zeb?
Sep 23, 2024
Raws li Chaw Tsim Tshuaj & Chaw Tsim Khoom Siv Khoom Siv, Borida ib txwm tsom mus rau ntau cov khoom siv hauv tsev, xws li: Dej-Reducer, Accelerator, thiab hom Additives rau Concrete Admixture, Cement Admixture, Pumping, Mortar Admixtures hauv Daim Ntawv Thov ntawm Railways, High-Speed, Water Conservancy & Hydropower Projects, Choj, Tunnels, thiab pob zeb thiab lwm yam.
Peb qhov chaw nyob
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Thaum pib ntawm qhov kev tsim kho, kev nkag siab txog qhov pom kev sib xyaw ua ke zoo tshaj plaws rau cov slabs thiab cov plag tsev yog qhov tseem ceeb. Cov pob zeb sib xyaw ua ke cuam tshuam rau lub zog, durability, thiab tag nrho kev ncaj ncees ntawm koj cov qauv. Nyob rau hauv phau ntawv qhia no, peb delve rau hauv lub nuances ntawm kev sib xyaw ua ke sib piv, tshawb txog lawv qhov tseem ceeb, thiab muab cov lus qhia ntxaws ntxaws rau ntau yam kev siv.
Qhov sib xyaw ua ke yog dab tsi?
Qhov sib xyaw ua ke yog hais txog qhov tshwj xeeb ntawm cov cement, xuab zeb, sib sau ua ke (gravel lossis crushed pob zeb), thiab dej uas sib xyaw ua ke los tsim cov pob zeb. Qhov piv no tseem ceeb heev vim nws cuam tshuam rau kev ua haujlwm, lub zog, thiab kav ntev ntawm cov khoom kawg. Qhov sib npaug zoo sib xyaw ua kom ntseeg tau tias koj cov pob zeb muaj peev xwm tiv taus lub sijhawm nruj thiab ntau yam ib puag ncig.
Vim li cas qhov sib xyaw ua ke tseem ceeb?
Ib qho kev sib xyaw ua vaj tse meej yog qhov tseem ceeb rau ntau qhov laj thawj:
Lub zog thiab ruaj khov: Ib qho piv txwv tsim nyog lav qhov tsim nyog compressive zog rau daim ntawv thov npaj, pab tiv thaiv kev ua haujlwm tsis zoo.
Ua haujlwm tau: Txoj kev sib xyaw ua ke tso cai rau kev tuav tau yooj yim, tso, thiab ua kom tiav, uas yog qhov tseem ceeb rau kev ua tiav qhov chaw du thiab tsis txhob muaj qhov tsis xws luag.
Durability: Kho kom raug cov pob zeb ua kom muaj kev ntxhov siab ib puag ncig, txo qhov kev pheej hmoo ntawm cov kab nrib pleb thiab deterioration nyob rau lub sijhawm.
General Concrete Mixing Ratio
Tus qauv kev sib xyaw ua ke feem ntau suav hais tias yog4:2:1, uas txhais tau tias:
4 qhov chaw crushed pob zeb
2 seem xuab zeb
1 ntu cement
Lub hauv paus piv txwv no ua haujlwm raws li cov lus qhia tab sis tuaj yeem hloov kho raws li cov kev xav tau tshwj xeeb.
Kev sib xyaw ua ke ntawm pob zeb rau Slabs
Rau pob zeb slabs, qhov sib tov sib xyaw yog1:2:4, muaj xws li:
1 ntu cement
2 seem xuab zeb
4 ntu coarse aggregate
Qhov sib piv no muab qhov sib npaug zoo ntawm lub zog thiab kev ua haujlwm, ua rau nws haum rau feem ntau daim ntawv thov slab. Txawm li cas los xij, nws yog ib qho tseem ceeb los txiav txim siab txog yam xws li lub peev xwm thauj khoom, ib puag ncig, thiab cov slab npaj siv ua ntej ua tiav qhov sib xyaw ua ke. Rau cov slabs raug huab cua huab cua los yog hnyav hnyav, yuav tsum tau hloov kho.
Kev sib xyaw ua ke ntawm kev sib xyaw rau hauv pem teb
Qhov sib tov piv rau cov pob zeb hauv pem teb txawv raws li lawv lub hom phiaj. Rau cov tsev nyob hauv pem teb, ib qho kev sib xyaw ua ke yog1:3:6:
1 ntu cement
3 seem xuab zeb
6 ntu coarse aggregate
Qhov kev faib ua feem no cuam tshuam qhov sib npaug ntawm lub zog thiab kev ua haujlwm. Rau kev lag luam lossis kev lag luam hauv pem teb uas yuav tsum ua kom muaj kev tsheb loj lossis hnyav, kev sib xyaw kom muaj zog tuaj yeem tsim nyog, xws li1:2:4los yog1:1.5:3. Kev sab laj nrog tus kws tsim qauv lossis tus neeg ua haujlwm paub txog tuaj yeem ua kom pom tseeb ntawm qhov sib xyaw zoo tshaj plaws rau cov ntawv thov hauv pem teb.
Kev sib xyaw ua ke rau cov kab teeb
Rau cov pob zeb ua kom muaj zog, ib qho kev sib xyaw ua ke yog1:1.5:3:
1 ntu cement
1.5 seem xuab zeb
3 qhov sib xyaw ua ke
Cov qauv no ua kom muaj zog txaus rau kev siv cov qauv. Xwb, ib tug ratio ntawm1:2:3tuaj yeem siv tau, muab kev daws teeb meem nrog kev ua haujlwm zoo thiab ua haujlwm ntev.
Kev sib xyaw ua ke ntawm qhov sib xyaw rau cov kab
Qhov zoo tagnrho sib tov piv rau cov pob zeb ua ke yog1:1:2:
1 ntu cement
1 feem xuab zeb
2 qhov sib xyaw ua ke
Txawm hais tias qhov piv txwv no yog tus qauv, kev hloov pauv yuav tshwm sim nyob ntawm qib pob zeb thiab cov kev xav tau tshwj xeeb engineering.
Kev sib xyaw ua ke ntawm kev sib xyaw rau plastering
Rau plastering, qhov sib xyaw ua ke sib txawv ntawm kev siv sab hauv thiab sab nrauv. Rau sab hauv plastering, ib tug piv ntawm1:6yog ib yam:
1 ntu cement
6 seem xuab zeb
Nyob rau hauv sib piv, txheej plastering feem ntau xav tau ib tug sib tov ntawm1:4:
1 ntu cement
4 seem xuab zeb
Hom Kev Sib Tw Sib Tw
Tsim Mix Ratio
Ib qho kev sib xyaw tsim qauv yog kev sib xyaw ua ke ntawm cov ntaub ntawv suav kom ua tau raws li qhov tseeb engineering xav tau ntawm ib qhov project tshwj xeeb. Qhov kev sib xyaw no yog txiav txim siab los ntawm kev kuaj sim, kom ntseeg tau tias cov pob zeb muaj cov yam ntxwv xav tau xws li lub zog, durability, thiab kev ua haujlwm.
Nominal Concrete Mixing Ratio
Nominal qhob mixing ratios muab kwv yees proportions rau cov khoom xyaw siv nyob rau hauv qhob. Feem ntau hais hauv qhov yooj yim, cov piv txwv no yog qhov tsim nyog rau cov ntawv me me lossis cov ntawv tsis yog cov qauv uas qhov precision tsis tseem ceeb.
Standard Mix Ratio
Standard mix ratios xa mus rau qhov zoo-txhais proportions ntawm qhob cov khoom xyaw, xam kom tau raws li cov qauv engineering. Tsis zoo li nominal mixes, cov piv txwv no yog tsim rau cov txiaj ntsig zoo sib xws nyob rau ntau qhov kev tsim kho.
High-Strength Concrete Mix Ratio
High-strength pob zeb, tsim rau superior durability thiab lub zog, yuav tsum tau tshwj xeeb sib tov proportions. Rau cov qib zoo li M50 txog M70, kev tsim qauv sib xyaw yog feem ntau ua haujlwm, tsim kom ua tiav qhov kev ua tau zoo rau cov ntawv thov.
