Qhuav pob mortar, tseem hu ua pob zeb qhuav los yog pob zeb qhuav, yog sib xyaw ntawm cov cement, xuab zeb, thiab cov dej tsawg tsawg. Nws yog feem ntau siv rau cov ntawv thov xws li kho cov pob zeb ua vaj tse, teeb tsa cov kav dej da dej, lossis tsim cov plag tsev. Lub sijhawm kho ntawm cov pob zeb qhuav yog qhov tseem ceeb uas yuav tsum tau xav txog kom nws lub zog thiab kav ntev. Thaum lub sij hawm kho qhov tseeb yuav txawv nyob ntawm ntau yam, ntawm no yog ib qho kev piav qhia ntawm cov txheej txheem kho thiab cov sij hawm raug cuam tshuam.

Kev kho yog cov txheej txheem ntawm kev tswj cov dej kom tsim nyog thiab qhov kub thiab txias kom tso cai rau lub mortar tsim nws lub zog tag nrho thiab kav ntev. Thaum lub sij hawm kho, cov ntaub ntawv cementitious hauv cov pob zeb qhuav tau dhau los ua cov txheej txheem hydration, qhov uas lawv hnov ​​​​mob chemically nrog dej los tsim cov qauv ruaj khov thiab ruaj khov.

1. Lub Sijhawm Teeb Meem: Lub sijhawm pib pib yog hais txog lub sijhawm nws siv rau cov tshuaj khib kom tawv mus rau qhov chaw uas nws tuaj yeem txhawb nqa qee qhov tsis muaj qhov cuam tshuam loj. Rau cov pob zeb qhuav, lub sij hawm pib lub sij hawm luv luv, feem ntau nyob ib ncig ntawm 1 mus rau 4 teev, nyob ntawm seb cov cement thiab cov khoom siv ntxiv.
2. Lub Sijhawm Teeb Meem Kawg: Lub sijhawm teeb tsa zaum kawg yog lub sijhawm xav tau rau cov tshuaj khib kom ncav cuag nws qhov siab tshaj plaws hardness thiab lub zog. Lub sijhawm no tuaj yeem sib txawv heev, txij li 6 mus rau 24 teev lossis ntau dua, nyob ntawm seb yam xws li cement hom, mix tsim, ambient kub, av noo, thiab thickness ntawm daim ntawv thov.
3. Lub Sijhawm Kho Mob: Tom qab lub sijhawm pib thiab zaum kawg, cov tshuaj khib nyiab txuas ntxiv kom muaj zog thiab ua haujlwm ntev los ntawm txoj kev kho. Kev kho yog feem ntau ua los ntawm kev ua kom cov mortar moist, uas tso cai rau cov dej txuas ntxiv ntawm cov ntaub ntawv cementitious.
   • Initial Curing: Lub sijhawm kho thawj zaug yog qhov tseem ceeb rau kev tiv thaiv kom qhuav ntxov ntxov ntawm cov tshuaj khib. Nws feem ntau yuav tsum npog cov ntaub ntawv qhuav pob zeb nrog ib daim ntawv yas los yog cov pam vov kom khaws cov dej noo. Cov theem no feem ntau kav li 24 mus rau 48 teev.
   • Intermediate Curing: Thaum thawj theem kho tiav lawm, lub mortar yuav tsum tau khaws cia kom ntub dej kom zoo thiab txhim kho lub zog. Qhov no tuaj yeem ua tiav los ntawm ntu ntu txau dej rau ntawm qhov chaw lossis los ntawm kev siv cov tshuaj tua kab mob uas tsim cov dej noo thaiv. Kev kho nruab nrab feem ntau txuas ntxiv rau 7 mus rau 14 hnub.
   • Long-Term Curing: Qhuav pob mortar tseem muaj zog ntxiv rau lub sijhawm ntev. Txawm hais tias nws yuav ua tiav lub zog txaus rau qee daim ntawv thov tom qab ob peb hnub lossis ob peb lub lis piam, nws raug pom zoo kom tso cai rau kev kho kom ntev ntev kom ua kom nws ruaj khov. Qhov no tuaj yeem nyob qhov twg los ntawm 28 hnub mus rau ob peb lub hlis, nyob ntawm seb qhov kev xav tau tshwj xeeb.

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias lub sijhawm kho tuaj yeem cuam tshuam los ntawm lwm yam xws li kub, av noo, thiab kev sib xyaw tshwj xeeb ntawm cov pob zeb qhuav. Kev kub siab dua feem ntau ua kom cov txheej txheem kho kom zoo, thaum qhov kub qis dua tuaj yeem ncua lub sijhawm kho. Tsis tas li ntawd, kev tswj xyuas cov dej kom zoo thaum lub sij hawm kho yog qhov tseem ceeb los tiv thaiv kev tawg thiab ua kom pom kev loj hlob zoo.

Txhawm rau txiav txim siab lub sijhawm kho kom raug rau ib daim ntawv thov qhuav pob zeb, nws yog ib qho tseem ceeb uas yuav tau sab laj nrog cov neeg tsim khoom cov lus pom zoo thiab ua raws li cov lus qhia. Cov chaw tsim khoom cov lus qhia yuav suav nrog cov cement tshwj xeeb, sib xyaw tsim, thiab ib puag ncig kom muab sijhawm kho kom raug rau qhov zoo tshaj plaws.

Nyob rau hauv cov ntsiab lus, lub sij hawm pib ntawm qhuav pob mortar yog luv luv, feem ntau 1 mus rau 4 teev, thaum lub sij hawm teem kawg ntawm 6 mus rau 24 teev los yog ntau tshaj. Kev kho yog tswj xyuas cov dej noo hauv cov tshuaj khib nyiab, nrog kev kho thawj zaug kav ntev li 24 mus rau 48 teev, kev kho nruab nrab ntawm 7 mus rau 14 hnub, thiab kev kho lub sij hawm ntev txuas ntxiv rau ob peb lub lis piam mus rau lub hlis. Ua raws li kev kho kom zoo yog qhov tseem ceeb los xyuas kom meej lub zog, durability, thiab tag nrho kev ua tau zoo ntawm cov pob zeb qhuav.