Kev ua haujlwm siab dej txo cov neeg ua haujlwm

Qee cov lus Askiv cov ntsiab lus tseem ceeb rau cov dej txo qis muaj xws li:

- Kev ua haujlwm siab dej txo cov neeg ua haujlwm
- Polycarboxylate superplasticizers
- Cov khoom sib xyaw ua ke
- Tshuaj lom neeg
- Polymer-based dej reducers
- Dispersants

Nov yog cov lus qhia luv luv rau sodium naphthalene formaldehyde sulfonate (SNF) polymer, yog ib qho ntawm cov dej txo qis hauv kev tsim vaj tsev:

Sodium naphthalene formaldehyde sulfonate (SNF) polymer yog ib hom kev ua haujlwm siab dej txo tus neeg sawv cev siv hauv kev tsim kho kev lag luam. Nws yog ib tug hluavtaws polymer uas ua raws li ib tug dispersant thiab txhim kho cov ndlwg zog ntawm qhob mix. SNF polymers feem ntau yog siv rau hauv kev tsim cov pob zeb ua kom muaj zog thiab ua haujlwm siab vim lawv muaj peev xwm txo cov dej hauv cov pob zeb sib tov yam tsis muaj kev cuam tshuam rau nws txoj haujlwm.

SNF polymer yog tsim los ntawm cov tshuaj tiv thaiv condensation ntawm naphthalene sulfonate, formaldehyde, thiab sodium hydroxide. Cov txiaj ntsig polymer muaj cov qauv kab ntev ntev nrog cov kab tsis zoo sulfonic acid pawg raws cov saw hlau. Thaum tov nrog pob zeb, SNF polymer molecules disperse thiab cais cov cement hais, txo cov kev sib txhuam ntawm lawv thiab yog li txo cov dej xav tau rau cov sib tov.

SNF polymers paub tias muaj cov dej txo qis, uas txhais tau hais tias lawv tuaj yeem txo cov dej ntsiab lus ntawm cov pob zeb sib tov txog li 30 feem pua. Lawv kuj txhim kho lub zog thiab durability ntawm cov pob zeb, txo qis shrinkage thiab tawg, thiab ua kom muaj kev ua haujlwm thiab siv tau. SNF polymers feem ntau yog siv los tsim cov pob zeb ua kom muaj zog rau cov phiaj xwm mega xws li txuas hniav, txoj kev loj, thiab cov dams.

Hauv cov ntsiab lus, Sodium naphthalene formaldehyde sulfonate (SNF) polymer yog cov dej txo cov neeg ua haujlwm zoo siv hauv kev tsim vaj tsev. Nws cov khoom, suav nrog cov dej-txo qis, txhim kho lub zog thiab kav ntev ntawm cov pob zeb, thiab txo qhov tawg thiab shrinkage, ua rau nws yog qhov kev xaiv nrov hauv kev tsim kho.