Cement, the important building material is a mixture of oxides of several elements. Besides calcium, iron and sulphur, oxides of elements of which of the group (s) are present in the mixture?

Question

Philoid · Accepted Answer

Cement is a product obtained by combining a material rich in lime. Calcium Oxide with other materials like clay which contains silica (SiO₂) along with the oxides of aluminium, iron, and magnesium

The average composition of Portland cement is:
CaO(50−60%),SiO₂(20−25%),Al₂O₃(5−10%),Fe₂O₃(1−2%),SO₂(1−2%) and MgO(2−3%).
Thus, it contains elements of group 2 (Ca), group 13 (Al) and group 14 (Si).