Lub luag haujlwm tshwj xeeb ntawm kev kho pob zeb

Lub luag haujlwm tshwj xeeb ntawm kev kho pob zeb

Tom qab cov pob zeb tau nchuav ua ntej kev tsim kho hauv pem teb, peb yuav tsum xaiv txoj kev kho kom tsim nyog raws li qhov xwm txheej tiag tiag. Lub sijhawm kho kuj txawv nrog cov cement sib txawv. Txawm li cas los xij, tus kws kho mob ua haujlwm li cas?

Kev kho pob zeb yog dab tsi?

Cov txheej txheem ntawm kev ua kom muaj kev vam meej ntawm cov cement hydration hauv cov pob zeb tshiab hu ua curing. Kev kho pob zeb feem ntau yog hais txog kev tuav cov av qeeg. Nyob rau hauv cov ntaub ntawv ntawm txaus noo noo curing, cov cement tuaj yeem ncav cuag qhov siab tshaj plaws ntawm hydration, tab sis nyob rau hauv cov ntaub ntawv ntawm qhuav sai, tsuas yog ib tug tsawg degree ntawm hydration yuav ua tau tiav. Yog tias cov pob zeb kho tsis zoo txaus, qhov zoo yuav tsis ua tiav.

Lub luag haujlwm ntawm kev txuag

Feem ntau, kev sib xyaw dej ntawm cov pob zeb yuav tsum ntau dua li cov dej xav tau ntawm cov cement hydration. Txawm li cas los xij, tom qab kev teeb tsa thawj zaug ntawm pob zeb, dej poob vim evaporation lossis lwm yam laj thawj yuav cuam tshuam rau tag nrho cov dej ntawm cov cement. Tshwj xeeb tshaj yog nyob rau saum npoo ntawm pob zeb, thaum cov pob zeb dries mus rau ib tug txheeb ze humidity hauv qab no 80%, lub hydration ntawm cov cement feem ntau nres, uas ua rau ntau yam khoom ntawm cov pob zeb puas. Cov pob zeb saum npoo yog qhov tseem ceeb heev rau kev ua haujlwm ntev, kev ua haujlwm tsis zoo thiab cov qauv ntawm cov pob zeb, yog li kev saib xyuas ntawm cov pob zeb saum npoo yog qhov tseem ceeb heev.

Kev poob ntawm cov av noo tsis tsuas yog cuam tshuam rau txheej txheej ntawm cov pob zeb, tab sis kuj vim tias cov dej noo hauv cov pob zeb muaj nyob rau hauv cov hlab ntsha, cov dej noo yuav nce los yog poob raws li cov capillaries. Thaum cov av noo tsis txaus, cov dej noo hauv cov hlab ntsha tseem yuav nce mus rau cov pob zeb. Nyob rau saum npoo, cov dej noo yuav evaporate ntxiv thiab yuav maj mam cuam tshuam cov dej tsis txaus hauv cov pob zeb. Yog li ntawd, thaum lub sij hawm kho ntawm cov pob zeb, nws yog ib qho tsim nyog los xyuas kom meej tias qhov saum npoo ntawm cov pob zeb muaj cov av noo txaus, thiab tib lub sijhawm, cov evaporation ntawm cov dej yuav tsum tau tiv thaiv.

Feem ntau, cov pob zeb yuav tsum tau ntub dej tom qab nchuav. Lub sijhawm kho nws txawv ntawm cov cement mus rau cov cement, thiab feem ntau siv 7-14 hnub. Yog tias muaj kev tso cai, koj tuaj yeem nqa cov npog ntub dej, koj tuaj yeem npog npog. Rau cov qauv uas tsis muaj tej yam kev mob los npog cov ntub dej thiab cov tshuaj tua kab mob, cov pob zeb kho tus neeg sawv cev tuaj yeem muab txau rau ntawm pob zeb rau kev kho. Piv txwv li, qee qhov nyuaj ntawm cov qauv, cov dej tsis muaj dej thiab lwm yam. Txoj kev kho tus neeg sawv cev kho tuaj yeem tiv thaiv cov pob zeb ya raws los ntawm evaporating, khaws cov av noo ntawm cov pob zeb, thiab ua kom lub hydration mus tas li.