Lub hauv paus yog lub hauv paus ntawm txhua lub tsev tsim. Yog li ntawd, qhov zoo dua nws yog xam thiab ua tiav, qhov ruaj khov thiab ruaj khov nws yog. Cov ntaub ntawv los ntawm lub hauv paus yog poured ho cuam tshuam nws zoo. Yog li ntawd, nws yuav tsum tau tham txog kev ua vaj tse, txiav txim siab hauv chav kawm ntawm pob zeb thiab nws cov hom.
Lub hauv paus yog pob zeb. Qhov no yog ib tug ancient sawv cev ntawm lub tsev ntaub ntawv. Pob zeb yog ib hom kev sib xyaw ntawm cov khoom hauv qab no: ib qho kev sib khi - cement (Portland cement thiab Portland slag cement), dej, nplua (xuab zeb) thiab ntxhib sib sau ua ke (crushed pob zeb thiab gravel).
Lub ntsiab lus tseem ceeb ntawm kev ua tau zoo yog cov chav kawm ntawm pob zeb thiab hom pob zeb. Lub hom phiaj qhia tus nqi ntawm cov cement uas suav nrog hauv cov pob zeb sib xyaw.
Chav kawm ntawm pob zeb yog ntawm cov hauv qab no: B10, B15, B20, B25, B30, B40, B80, B12, 5, B7, 5, B22, 5, B35…. Cov hom hauv qab no yog qhov txawv ntawm qhov chaw B7, 5 - B40.
Nws muaj cov cais tawm rau lub zog compressive, uas nyob ntawm qhov ntom ntawm pob zeb:
- M400 - M1000 - hnyav ntxiv;
- M100- М 600 - hnyav;
- M50 - M400 - normal;
- M25 - M200 - teeb;
- M4 - M100 - ultralight.
Cov npe npe ntawm no yog siv ntau heev. Tus lej tom qab tsab ntawv M yog lub zog compressive ntawm lub voos xwmfab, uas nws ncav cuag tom qab 28 hnub ntawm kev loj hlob. Kuj tseem muaj cov yam ntxwv tseem ceeb sib npaug ntawm cov pob zeb xws li: Frost tsis kam, tiv thaiv kev txhoj puab heev.
Qhov zoo thiab hom pob zeb rau lub hauv paus yog nyob ntawm lub hom phiaj, hom thiab kev ua haujlwm ntxiv. Cov huab cua hauv cheeb tsam muaj kev cuam tshuam loj rau kev siv ntau hom kev sib tov.
Nws yog ib qho tsim nyog yuav tsum tau ua tib zoo saib xyuas cov hauv qab no thaum npaj cov hauv paus:
- Txoj kev thauj mus los ntev, nrog rau kev thauj khoom los ntawm tus kheej qhov hnyav ntawm tus qauv.
- Kev kawm paub txog av thiab dej hauv av.
- Txoj kev teeb tsa ntawm thaj chaw uas nyob hauv qab theem hauv pem teb ntawm 1st pem teb, hom lub hauv paus thiab hom hauv qab daus.
Txhua yam no cuam tshuam rau cov chav kawm ntawm pob zeb, nrog rau nws lub cev thiab cov khoom siv kho tshuab. Thaum tsim ib lub tsev rau khoom, chaw tsim khoom lossis chaw nyob, koj yuav tsum xam cov nqi ntawm tag nrho cov loads.
txhawm rau txhawm rau lub hauv paus uas lub tsev yuav tsim kom muaj zog, kev xaiv txoj cai ntawm cov pob zeb rau lub hauv paus thiab muab tub lim yog tsim nyog. Lub hom phiaj yog nyob ntawm lub tsev tsim, qhov loj dua tus nqi thauj khoom, lub hom loj dua peb txais.
Los ntawmLos ntawm cov lus hais saum toj no, nws yog qhov tseeb tias kev ua haujlwm ntev ntawm ib lub tsev nyob ntawm lub hauv paus tau muab tso rau hauv nws, thiab nws qhov zoo yog nyob ntawm qhov proportions ntawm cov khoom vaj khoom tsev.
Kev npaj tus kheej ntawm kev sib xyaw ua ke zoo yog kim heev: vim qhov nyuaj ntawm kev tau txais pob zeb ntawm qhov xav tau zoo thiab qhov ntim ntawm nchuav rau hauv formwork, uas yuav tsum tau ua tiav hauv ib hnub.
Kev ua yuam kev hauv kev npaj cov pob zeb sib xyaw tsim nyog rau cov hauv paus tuaj yeem txo qis nws qhov zoo, uas yav tom ntej tuaj yeem ua rau muaj ntau yam xwm txheej phem. Txawm tias yog ib lub tsev ntiag tug, lub hauv paus ua haujlwm yuav tsum ua tib zoo ua raws li cov qauv kev tsim vaj tsev.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias koj yuav tsum xaiv lub hom phiaj zoo ntawm cov pob zeb, qee qhov tsim nyog rau kev tsim cov tsev loj, thaum lwm tus tuaj yeem tiv taus cov khoom me me xwb.
