Video: Puas yog pob zeb ua kua?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Pob zeb pib lub neej li ib ua kua (los yog ua kua -like) thiab sai sai siv cov khoom sib txuas nrog cov pob zeb.
Ntawm no, yog cement yog kua?
Cement yog ib lub ntsiab lus dav rau cov khoom siv uas ua rau cov khoom sib txuas ua ke. “ Cement rau pob zeb yog hmoov (khoom) uas dej ntxiv los ua slurry (nominally A ua kua ) uas tom qab ntawd nkag mus rau cov tshuaj tiv thaiv tshuaj los ua cov khoom ruaj khov. Khoom lossis ua kua nyob ntawm seb koj nyob qhov twg hauv cov txheej txheem.
Tsis tas li ntawd, ua li cas rau dej hauv pob zeb? Dej yog cov khoom tseem ceeb, uas thaum tov nrog cement , daim ntawv muab tshuaj txhuam uas khi cov aggregate ua ke. Cov dej ua rau lub hardening ntawm pob zeb los ntawm cov txheej txheem hu ua hydration. Ntau dhau lawm dej txo pob zeb lub zog, thaum tsawg dhau yuav ua rau lub pob zeb ua haujlwm tsis tau.
Tsis tas li lo lus nug yog, yam twg yog qhov tseeb?
Qhob yog ib sib tov ntawm txiv qaub (CaO), cement, dej (H2O), xuab zeb, thiab lwm cov pob zeb hauv av thiab cov khib nyiab . Tag nrho cov khoom xyaw no sib tov ua ke. Cov neeg ua haujlwm tom qab ntawd nchuav cov pob zeb rau hauv pwm thiab cov pob zeb hloov mus rau hauv cov khoom (raws li cov cement solidifies) nrog cov khoom sib cais hauv.
Cov cement tuaj yeem siv los ntawm nws tus kheej?
Cement yog ib cov hmoov khi zoo uas yeej tsis tau siv ib leeg tab sis yog ib feem ntawm ob qho tib si pob zeb thiab mortar, nrog rau stucco, pobzeb grout, thiab nyias-set nplaum.
Pom zoo:
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