Cov txiv qaub ceev feem ntau muaj cov txiv qaub overheated, overheated txiv qaub txij nkawm qeeb, yog tias cov pob zeb tshauv paste hardening dua, nws yuav ua rau tawg tawg vim kev laus expansion.Txhawm rau tshem tawm qhov teeb meem ntawm cov txiv qaub hlawv, cov txiv qaub yuav tsum "hnub nyoog" li ntawm 2 lub lis piam tom qab kev kho.Cov duab yog dawb (los yog grey, xim av, dawb), amorphous, nqus dej thiab carbon dioxide los ntawm huab cua.Calcium oxide reacts nrog dej los tsim calcium hydroxide thiab tso tawm cua sov.Soluble nyob rau hauv acidic dej, insoluble nyob rau hauv cawv.Inorganic alkaline corrosive cov khoom, lub teb chaws txaus ntshai code: 95006.Txiv qaub reacts chemically nrog dej thiab tam sim ntawd rhuab mus rau kub tshaj 100 ° C.