Cov hauv qab no tuaj yeem yog cov cai dav dav rau Ordinary Portland Cement (OPC): Phab ntsa thiab txhua kab tuaj yeem raug tshem tawm tom qab kwv yees 24-48 teev Slabs, nrog rau lawv cov khoom seem hauv qab lawv, feem ntau tuaj yeem raug tshem tawm tom qab 3-4 hnub. Soffits, nrog lawv cov khoom seem hauv qab lawv, tuaj yeem raug tshem tawm tom qab ib lub lim tiam.
Thaum twg peb yuav tsum tshem tawm qhov kaw?
Tag nrho slab shuttering yuav tsum tau muab tshem tawm tom qab 10 hnub. Kev tshem tawm cov kab hluav taws xob yuav tsum tau 8 hnub. Beams thiab arches ua tiav tshem tawm ntawm kev kaw yuav tsum tau 14 hnub. Yog hais tias kab thiab arches muaj qhov ntev tshaj li 6 meter, lub sij hawm tshem tawm yuav tsum yog 21 hnub.
Thaum twg koj tuaj yeem tshem tawm qhov thaiv ntawm cov pob zeb?
Feem ntau formwork ntawm txhua phab ntsa, thiab lwm cov ntsiab lus ntsug tuaj yeem raug tshem tawm tom qab 24 txog 48 teev. Rau cov pob zeb pob zeb, formwork tuaj yeem muaj kev nyab xeeb tshem tawm tom qab 3 hnub kho thiab khoom siv tom qab 2 lub lis piam.
Ntev npaum li cas ua ntej koj tuaj yeem tshem tawm cov qauv ntawm pob zeb?
Formwork tej zaum yuav ua tib zoo tshem tawm tom qab 24 teev. Koj tuaj yeem taug kev ntawm qhov chaw tom qab 3 hnub tab sis zam kev thauj khoom hnyav tsawg kawg 7 hnub.
Puas yog nws los nag tom qab nchuav pob zeb?
nag ntog rau saum cov pob zeb uas tsis tu ncua tuaj yeem ua rau ntog thiab cuam tshuam ib theem thiab ntab tiav. Txawm li cas los xij, yog tias dej ntau dhau ua haujlwm rau hauv cov pob zeb sib xyaw, qhov no tuaj yeem ua rau cov pob zeb tsis muaj zog tag nrho.
