Cov dej dawb uas tuaj yeem khov rau hauv cov pob zeb tau txo qis heev, lub impermeability ntawm cov pob zeb yog txhim kho, thiab khov-thaw kuj muaj zog. Piv nrog rau lwm hom dej-txo cov neeg ua haujlwm, polycarboxylic acid dej-txo cov neeg ua haujlwm muaj zog dispersibility ntawm cov cement hais. Lawv tuaj yeem txhim kho cov qauv pore sab hauv thiab qhov pore loj ntawm cov pob zeb, ua kom cov pob zeb ntom ntom, txo cov hlab ntshav, thiab ntxiv dag zog rau impermeability ntawm pob zeb.
Lub polycarboxylate dej txo tus neeg sawv cev kuj muaj qee qhov huab cua nkag, uas yuav qhia qee cov npuas ruaj khov rau hauv cov pob zeb, kom qhov nthuav dav siab concentration tshwm sim los ntawm kev khov thiab kev tsiv teb tsaws ntawm cov dej supercooled tuaj yeem txo tau zoo, thiab cov pob zeb' s khov-thaw tsis kam ua haujlwm tuaj yeem txhim kho tau zoo.
Cov ntsiab lus chloride ion, sodium sulfate cov ntsiab lus, thiab cov ntsiab lus alkali ntawm polycarboxylic acid dej reducer yog qis dua lwm hom dej reducers, uas yog qhov zoo dua rau kev ua haujlwm ntawm cov pob zeb ua kom muaj zog. Qee cov ntaub ntawv qhia tau hais tias ntxiv polycarboxylic acid dej-txo tus neeg sawv cev rau cov pob zeb zoo tib yam kuj tuaj yeem ua rau kom muaj zog ntawm cov hlau-pob zeb.
