Cement The major cements: composition and properties
2 #0183;#32;Cement Cement The major cements: composition and properties: Portland cement is made up of four main compounds: tricalcium silicate (3CaO #183; SiO2), dicalcium silicate (2CaO #183; SiO2), tricalcium aluminate (3CaO #183; Al2O3), and a tetracalcium aluminoferrite (4CaO #183; Al2O3Fe2O3). In an abbreviated notation differing from the normal atomic symbols, these compounds are designated as C3S, C2S