Mar 09, 2012· The chemical compositions of Crusher dust and Marble sludge such as Fe 2 O 3, MnO, Na 2 O, MgO, K 2 O, Al 2 O 3, CaO, and SiO 2 are comparable with that of cement. The replacement of fine aggregate with 30% marble sludge and 70% Crusher dust (Mix B) gives an excellent result in strength aspect and quality aspect.