Hnub Tim:5,Tau,2022

Thaum Maas yog tov nrog dej, vim kev sib nrig sibhawm ntawm cov molecules ntawm cov Masas Alerals, thiab qee qhov kev koom nrog cov dej daws Zaj duab xis tom qab Maas zaub mov yog hydrated. Ua ke, kom cov Maas slurry ua ib flocculation qauv. Cov teeb meem loj loj yog qhwv hauv cov qauv Flockculation yuav tsis tuaj yeem tiv thaiv dej thiab ua tsis tau kev tsim kho kom tau.

Tom qab ntxiv SuperPlasticizer, cov pab pawg hydrophobic ntawm cov kev daws teeb meem azasous, thiab cov duab hydlefling rau saum npoo ntawm cov cement paltle, kom saum npoo ntawm Masas Particle muaj tib tus nqi. Raws li kev txiav txim ntawm hluav taws xob cov tshuaj, cov Maas hais tawm los ntawm lwm tus, thiab cov qauv flocculation ntawm txoj kev ntseeg Maas tau tawg. Ntawm ib sab tes, cov dej dawb hauv flocculation qauv ntawm cov xis mas cov nplais thiab dej, yog li nce cov xim ntawm cov sib tov; Ntxiv mus, qhov slippage ntawm cov xis mas ua rau muaj kev nce qib ntxiv vim yog cov tuab yaj ntawm cov yeeb yaj kiab dej zaj duab xis. Nov yog lub hauv paus ntsiab lus uas dej txo cov neeg sawv cev txo qis vim kev tshaj tawm, dispersion, ntub dej thiab lubrication.

Lub hauv paus ntsiab lus: nyob rau hauv luv luv, tus neeg sawv cev dej feem ntau yog surfactant uas adsorbs nyob rau saum npoo ntawm Maas ua kom pom cov khoom hluav taws xob. Cov lus repel ib leeg vim yog tib lub hluav taws xob them nqi, yog li ntawd cov Maas hais tawm, thiab cov dej tshaj ntawm cov lus tso tawm los txo cov dej. Ntawm qhov tod tes, tom qab ntxiv cov dej ua ke txo qis, uas cuam tshuam rau cov kev ua kom zoo nkauj ntawm cov cement, uas cuam tshuam rau cov cement tsis zoo tshaj, cov qauv network ntau dua ntom, thiab txhim kho lub zog thiab cov qauv ntom ntom ntawm cov cement slurry.

Thaum cov pob zeb tawg yog qhov zoo ib yam, lub admixture uas tuaj yeem txo cov dej haus hu ua cov pob zeb reducer. Dej txo tus neeg sawv cev tau muab faib ua cov dej ntws ib yam thiab cov dej ua haujlwm siab ua rau tus neeg sawv cev dej siab. Cov uas muaj dej txo qis tsawg dua lossis sib npaug rau 8% hu ua tus nqi txo qis ntawm ntau dua 8% yog hu ua cov dej ntws zoo siab. Raws li cov kev cuam tshuam sib txawv uas superplasticizers tuaj yeem coj mus rau hauv vaj tse, lawv muab faib ua thaum ntxov-entraining superplasticizers.

Los ntawm kev qhia txog kev ua haujlwm ntawm kev ntxiv cov dej txo tus neeg sawv cev rau lub cim kev kho tus neeg saib xyuas, peb muaj kev nkag siab txog dej kom tus neeg sawv cev ntawm cov neeg sawv cev. Hauv cov lus yooj yooj yim, lub luag haujlwm ntawm cov dej txo tus neeg sawv cev yog tus neeg sawv cev sab nrauv, thiab tso cov dej ntawm cov khoom noj kom zoo ib yam, thiab cov khoom noj kom haum rau cov dej.