Mechanism ntawm kev ua ntawm cov dej txo tus neeg sawv cev

Cov dej txo cov neeg ua haujlwm, tseem hu ua plasticizers, yog cov khoom siv ntxiv siv hauv cov pob zeb thiab lwm cov ntaub ntawv cementitious los txo cov dej uas xav tau kom ua tiav qhov kev xav tau thiab lub zog.Cov txheej txheem ntawm kev ua ntawm cov dej txo cov neeg ua haujlwm tuaj yeem piav qhia los ntawm lawv cov txiaj ntsig ntawm lub cev ntawm cov khoom siv cementitious.

Cov dej txo cov neeg ua haujlwm los ntawm adsorbing rau saum npoo ntawm cov cement hais thiab hloov cov nqi hluav taws xob ntawm cov khoom.Qhov no txo ​​cov quab yuam ntawm cov khoom, cia lawv ntim ua ke kom nruj dua.Yog li ntawd, qhov chaw khoob ntawm cov khoom raug txo qis, thiab cov dej uas yuav tsum tau ua kom puv cov qhov chaw yog txo.

Kev siv cov dej txo cov neeg ua haujlwm kuj tuaj yeem txhim kho kev ua haujlwm ntawm cov pob zeb lossis cov khoom siv cementitious, ua kom yooj yim rau kev tuav thiab qhov chaw.Qhov no yog vim qhov txo qis hauv viscosity ntawm qhov sib tov, uas tso cai rau kev txhim kho ntws thiab sib sau ua ke.

Cov tshuaj txo dej tuaj yeem muab faib ua ob pawg tseem ceeb: lignosulfonates thiab hluavtaws polymers.Lignosulfonates yog muab los ntawm cov ntoo pulp thiab feem ntau yog siv rau hauv cov pob zeb qis rau nruab nrab.Synthetic polymers yog tsim los ntawm cov tshuaj thiab tuaj yeem muab kev txo qis hauv dej ntau dua thiab txhim kho kev ua haujlwm, ua rau lawv tsim nyog siv rau hauv cov pob zeb ua haujlwm siab.

Hauv cov ntsiab lus, cov txheej txheem ntawm kev txiav txim ntawm cov dej txo cov neeg ua haujlwm cuam tshuam rau cov khoom siv cement thiab hloov cov nqi hluav taws xob ntawm cov khoom.Qhov no txo ​​cov quab yuam ntawm cov khoom thiab tso cai rau lawv ntim ua ke kom nruj dua, txo qhov chaw khoob thiab txo cov dej xav tau.Kev siv cov dej txo cov neeg ua haujlwm kuj tuaj yeem txhim kho kev ua haujlwm ntawm cov pob zeb lossis cov khoom siv cementitious, ua kom yooj yim rau kev tuav thiab qhov chaw.