A cement composition is made from a heat activated chemical salt selected from the group consisting of magnesium oxide, potassium oxide, sodium oxide, and calcium oxide and mixtures thereof. This activated salt is the mixed with hydraulic cement in an amount of 2½ to 3½ parts activated salt to one part hydraulic cement and the resulting mixture of hydraulic cement and activated salt is mixed with water and aggregate. In addition, industrial waste may be added to the mix in minor amounts of 5 to 30 percent.