Video: Qhov piv ntawm Portland cement rau xuab zeb yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Li qub piv yog 1 part cement ,,2 ntu xuab zeb , thiab 3 qhov chaw gravel (ua lag luam lo lus ib feem rau duav, thoob, lossis lwm yam khoom siv ntsuas). # Pib ntxiv dej rau qhov sib tov maj mam, sib tov txuas ntxiv kom txog thaum nws dhau los ua yas txaus los tso rau hauv koj daim ntawv.
Ib yam li ntawd, nws tau nug, qhov piv ntawm cov xuab zeb thiab cov cement sib xyaw yog dab tsi?
Rau lub hom phiaj dav dav, sib tov 6 ntu xuab zeb rau 1 part cement . Rau tej yaam num hnyav, kuv raug qhia rau sib tov 4 ntu xuab zeb rau 1 part cement , tab sis tsis ntev los no, kuv tau sib tov 3 ntu xuab zeb rau 1 part cement . Cov piv koj xaiv nyob ntawm qhov kev npaj siv.
Tom qab ntawd, lo lus nug yog, kuv puas yuav tsum tau sib tov xuab zeb nrog cement? Nws raug nquahu kom koj ua raws li cov qauv qhia uas muaj li ntawm 60 txog 75 feem pua ntawm cov khoom siv sib xyaw nrog 10 mus rau 15 feem pua cement . Raws li rau kev siv dej, koj xav tau tsawg kawg yog 15 mus rau 20 feem pua ntawm cov dej uas kuj nyob ntawm qhov sib sau uas koj siv. Rau sib tov cement tsis muaj xuab zeb , koj xav tau : Dej.
Ntawm no, koj puas yuav tsum sib tov xuab zeb nrog cement?
Thaum xuab zeb yog cov feem ntau aggregate siv los tsim pob zeb, koj kuj sib tov cement nrog gravel, crushed pob zeb los yog tej daim ntawm cov qub pob zeb. Qhov sib npaug yooj yim rau kev ua vaj tse yog: 60 mus rau 75 feem pua ntawm cov khoom sib sau ( xuab zeb los yog lwm qhov sib sau ua ke hais) sib xyaw nrog 10 mus rau 15 feem pua cement.
Dab tsi ntxiv rau cov cement kom nws muaj zog?
Koj ua tau ntxiv ntau Portland cement mus bagged qhob rau ua kom muaj zog . Koj tuaj yeem ua tau ntxiv hydrated txiv qaub. Rau ua tus muaj zog tshaj pob zeb, cov xuab zeb yuav tsum tau muab los ntawm volcanic lava uas muaj cov ntsiab lus silica siab.
Pom zoo:
Yuav ua li cas yog qhov tsawg kawg nkaus pob zeb npog nyob rau hauv mm ntawm ib tug cam khwb cia nyob rau hauv qhov chaw pob zeb tso tawm tsam thiab mus tas li raug rau lub ntiaj teb?
Table-1: Yam Tsawg Npog Thickness rau Cast-in-Place Qhob Hom kev tsim ua vaj tse hla, hli Qhob nrum tiv thaiv thiab txuas mus tas li nrog hauv av 75 Pob zeb sib chwv nrog av lossis dej No. 19 txog No. 57 tuav 50 No. 16 bar thiab me dua 40
Qhov ratio ntawm xuab zeb rau mortar yog dab tsi?
Ib qho kev sib tov sib xyaw yog 1 cement: 3 xuab zeb
Qhov hnyav ntawm 1 CFT xuab zeb yog dab tsi?
Sib npaug: 95.46 phaus (lb) hauv qhov hnyav. Hloov cubic taw rau phaus tus nqi nyob rau hauv lub puam xuab zeb unitsscale
Dab tsi xuab zeb kuv siv rau pob zeb?
Pob zeb xuab zeb yog thiab aggregate sandusually muaj xws li gneiss, ntxiab pob zeb, limestone los yog granite.Qhov tshwj xeeb ntawm cov xuab zeb no feem ntau crushed ntawm lub quarryand ces ntxuav thiab tshuaj xyuas kom zoo
Dab tsi yog qhov txawv ntawm pob zeb pob zeb thiab cov cement slab?
Qhov sib txawv ntawm cov cement thiab pob zeb Txawm hais tias cov ntsiab lus cement thiab pob zeb feem ntau siv sib hloov, cov cement yog cov khoom xyaw ntawm cov pob zeb. Lub pob zeb yog qhov sib xyaw ntawm cov khoom sib xyaw thiab muab tshuaj txhuam. Cov aggregates yog xuab zeb thiab gravel los yog crushed pob zeb; cov tshuaj nplaum yog dej thiab portland cement