Cov ntsiab lus ntawm cov dej txo tus neeg sawv cev

Dej-txo admixture yog ib qho kev sib xyaw ua ke uas tuaj yeem txo cov dej sib xyaw thaum tswj cov slump ntawm pob zeb tsis hloov pauv. Feem ntau ntawm lawv yog cov anionic surfactants, xws li lignin sulfonate, naphthalene sulfonate formaldehyde polymer, thiab lwm yam. Tom qab muab ntxiv rau cov pob zeb sib tov, nws muaj cov nyhuv dispersing ntawm cov cement hais, uas tuaj yeem txhim kho nws cov kev ua haujlwm, txo cov dej haus, thiab txhim kho. fluidity ntawm cov pob zeb sib tov; los yog txo cov cement noj thiab txuag cov cement.