Txawm hais tias peb tab tom tsim txoj kev lossis tsim tsev, cov cement yog cov khoom tseem ceeb. Qhov kub thiab av noo ntawm cov khoom cement yog qhov tsim nyog uas cuam tshuam rau lub zog ntawm cov qauv cement. Tau kawg, nws tsis yog cov no xwb, tseem muaj cov pobzeb cement, cement boards, cement kav, thiab lwm yam. Tom qab ntxiv cov dej tsim nyog rau cov cement, nws yuav tig mus rau hauv cov cement slurry, uas tuaj yeem ua tiav. Raws li lub sij hawm dhau mus, cov cement yuav solidify rau hauv ib qho khoom, cov txheej txheem yog qhov nyuaj, thiab ntau yam yuav cuam tshuam rau cov solidification ceev thiab hardening degree ntawm cement.
Nyob rau hauv tus txheej txheem ntawm kev sib tov, pouring, combining thiab tsim cov cement, muaj cov kev cai nruj heev. Yog tias lub tshuab hluav taws xob siv hluav taws xob siv rau kev kho, qhov kub thiab txias tuaj yeem tswj tau zoo dua thiab thaum kawg qhov molding zoo ntawm cov cement tuaj yeem tswj tau.
Thaum ua nrog cov cement, yog siv lub tshuab hluav taws xob, nws yuav muaj qee yam cuam tshuam rau lub zog ntawm cov khoom cement. Tom qab peb hliv cov cement, cov cement yog raug rau saum huab cua thiab qee zaum raug tshav ntuj kub. Cov dej evaporates sai heev thiab nws yog ib qho nyuaj rau replenish dej. Nws yuav sai sai qhuav heev, ua rau cov cement kom hydrate thiab txawm siv ncaj qha. Cov khib nyiab, ua rau khib nyiab thiab kev cuam tshuam.
Ntawm chav kawm, ntxiv rau hydration, nws txhais tau tias hardening. Thaum siv cov cement, piv txwv li, cov degree ntawm hardening ntawm lub tsev qauv kuj yuav tsum tau ib lub sij hawm ntawm curing tom qab molding. Lub sijhawm no, yog tias koj siv lub tshuab hluav taws xob, koj tuaj yeem ua kom cov av noo ntawm cov cement. Cement ntawm qhov kub sib txawv yuav cuam tshuam cov tshuaj tiv thaiv ntawm cov cement hydration. Thaum qhov kub thiab txias, cov tshuaj tiv thaiv yuav nrawm thiab lub zog condensation yuav nrawm. Yog tias qhov kub thiab txias qis dhau, cov tshuaj tiv thaiv tus nqi yuav qeeb thiab lub zog yuav qeeb raws li. Yog li ntawd, thaum peb tab tom tsim, feem ntau ntawm cov tshuab hluav taws xob yog tswj xyuas raws li cov huab cua puag, lossis qhov kub thiab txias hauv zos, qhov chaw, cov neeg siv, thiab dej zoo, thiab lwm yam, thiab tswj cov tshuaj tiv thaiv ntawm cov cement hydration thiab hardening los cuam tshuam cov cement lub zog. Qhov ceev thiab qeeb ntawm cov qauv tsim lub zog ntawm cov khoom.
Thaum cov khoom siv cement tau khaws cia siv peb lub tshuab hluav taws xob, lawv tuaj yeem hloov kho raws li cov neeg siv khoom xav tau. Lub siab ruaj khov thiab tuaj yeem ua tau raws li qhov xav tau ntawm ntau qhov chaw tsim khoom thiab huab cua. Lub zog kuj tuaj yeem hloov kho hauv ntau lub zog. Thaum tus nqi ntawm cov cement sib txawv, tus nqi ntawm cov chav xav tau kuj sib txawv, uas tuaj yeem txuag hluav taws xob zoo dua thiab tiv thaiv ib puag ncig.
Yog li ntawd, thaum siv lub tshuab hluav taws xob, nws muaj qhov zoo ntawm kev ua haujlwm siab thiab txuag hluav taws xob. Nws yooj yim dua thiab txuag hluav taws xob los xaiv lub tshuab hluav taws xob los tswj cov khoom cement. Lub tshuab hluav taws xob ua hluav taws xob yog cov cuab yeej siv hluav taws xob kub thiab lub zog siab. Lub tshuab hluav taws xob siab thiab kub kub tsim tawm tuaj yeem ntxuav thiab tua cov khoom siv hauv kev kho mob, thiab tseem tuaj yeem siv rau cov tshuaj reactors. Nws ua haujlwm rau ntau yam kev lag luam, xws li biochemical engineering, kev kho mob kev lag luam, kev lag luam ua zaub mov, kev lag luam ntim tshuab, khaub ncaws, kev tshawb fawb, kev kub siab, kev tsim kho kev lag luam, thiab lwm yam.
Post lub sij hawm: Mar-22-2024
