Cov txheej txheem ob txheej txheej yog yooj yim siv. Cov khoom siv hauv paus yog sib xyaw nrog tus neeg sawv cev kho hauv kev faib ua feem thaum siv, thiab cov xim zaj duab xis yog qhuav los ntawm cov tshuaj tiv thaiv kev sib txuas los tsim cov xim tawv tawv, uas muaj qhov zoo adhesion rau hauv av thiab iav hlaws dai. Nws muaj qhov zoo ntawm kev ziab sai, hnav tsis kam, dej tsis kam, acid thiab alkali tsis kam, huab cua tsis zoo, thiab haum rau ntau yam kev nyab xeeb. Nws yog dav siv rau cement pavement thiab asphalt pavement raws li lub sijhawm ntev.
