Yuav ua li cas Precast Qhob Ua?
Pob zeb ua kev lim dej yog ib yam khoom tsim los ntawm cov pob zeb ntim rau hauv ib lub poom uas tsim nyog los yog "formwork" thiab tom qab ntawd kho nyob rau hauv ib cheeb tsam tswj, thauj mus rau kev tsim kho thiab tshem tawm mus rau qhov chaw ("tilt up"). Hauv kev sib piv, cov txuj ci qhab nia raug muab pov rau hauv ib daim ntawv-meej tshwj xeeb thiab kho rau ntawm qhov chaw. Prefabricated pob zeb txawv ntawm cov pob zeb hauv av precast uas siv cov aggregate los ua cov pob zeb, kom qhov kawg ntawm cov khoom zoo li lub pob zeb lossis pob zeb.
Prefabricated (panels) tsuas yog siv nyob rau thaj tsam ntawm sab nrauv phab ntsa thiab sab hauv phab ntsa. Compresses on pob zeb ua ke thiab pob zeb los tsim ib qho khoom tsis tau tswj los ntawm cov phab ntsa lossis lub ntsej muag. Los ntawm kev ua cov pob zeb precast (feem ntau hu ua cov khoom siv nyob rau hauv prefabricated) hauv qhov chaw tswj, precast concrete muaj lub sijhawm los kho kom zoo thiab saib xyuas cov neeg ua hauj lwm. Kev siv cov precast qhob tshuab muaj ntau qhov zoo tshaj nyob hauv cov zeeg casting. Precast qhob ntau yuav ua tau rau hauv av, uas yuav pab kom muaj kev ruaj ntseg ntawm tag nrho qhov project. Muab piv rau qhov chaw siv, cov nroj tsuag precast muaj ntau dua tswj cov khoom zoo thiab cov txheej txheem. Templates siv nyob rau hauv prefabricated nroj tsuag yuav reused pua pua txhiab lub sij hawm ua ntej yuav rov qab siv dua, feem ntau ua rau lawv pheej yig dua nyob rau hauv qhov chaw pov thawj thaum saib tus nqi ntawm ib chav tsev nyob.
Muaj ntau lub xeev thiab tsoomfwv cov haujlwm thauj mus los hauv Tebchaws Meskas yuav tsum tau siv cov khoom siv ua kom tiav los ntawm lub koomhaum Kev Tsim Nyog (APA), National Precast Concrete Association (NPCA) lossis Precast Prestressed Concrete Association (PCI).
Muaj ntau ntau hom kev siv pob zeb ua kev tsim siv rau kev tsim kho, uas txawv loj, ua haujlwm, thiab nqi. Cov khoom siv ua ntej lub tsev siv kuj yog siv los npog tag nrho los yog ib feem ntawm lub tsev sab nrauv lossis cais cov phab ntsa kom zoo nkauj rau ib puag ncig, soundproofing thiab phab ntsa kev ruaj ntseg, qee qhov ntawm cov khoom yuav yog cov qhe ntawm cov tswv cuab. Cov dej nag, cov dej thiab cov kav dej thiab cov kav dej siv hauv cov av hauv precast.
