Thaum lub sijhawm ua cov cement sib tov, vim tias muaj kev nyiam sib nqus ntawm cov cement hais, lawv nyiam ib leeg los tsim cov flocs thiab tsim cov txheej txheem flocculent. Tus qauv flocculation qhwv ib feem ntawm cov dej sib tov thiab txo qhov ua haujlwm ntawm cov pob zeb sib xyaw.
Superplasticizer muaj cov khoom hydrophobic thiab hydrophilic. Cov pab pawg hydrophobic ntawm cov dej txo qis tau tsom mus rau adsorb ntawm cov nplais ntawm cov cement, thiab cov pab pawg hydrophilic taw tes rau cov kua dej thiab tsim cov yeeb yaj kiab adsorption. Thaum cov qhob sib xyaw ua ke, vim yog cov lus qhia ntxeem tau ntawm cov superplasticizer, cov nplaim dej ntawm cov cement muaj cov nqi hluav taws xob zoo ib yam, kev sib deev zoo ib yam ua rau lwm tus sib tsoo, cov cement sib xyaw ua ke tau sib cais, cov qauv ua dej ntawm cov pob zeb tawg , thiab cov dej ntim tau tso tawm kom ntxiv cov cement sib tov Cov dej xav tau ua kom muaj kev txav mus los ntawm cov pob zeb sib xyaw ua ke thiab ua tiav cov txiaj ntsig ntawm kev txo cov dej haus. Nyob rau tib lub sijhawm, cov yeeb yaj kiab adsorption tsim nyob rau saum npoo ntawm cov cement hais vim yog cov superplasticizer ua rau kev sib cuag ntawm cov cement thiab cov khoom sib npaug ntau dua thiab ua rau kev ua haujlwm ntawm cov pob zeb ua haujlwm; zaj duab xis adsorption tseem ua rau thaj tsam ntawm cov cement ntau thiab txhawb nqa cov dej ntau. Nws yog qhov muaj txiaj ntsig los txhim kho lub zog ntawm cov pob zeb ua ke.
