Cement is a sticky substance that can cement particles to each other and to create a solid object capable of forming particles and a mixture of calcareous materials, clay, silica and metal oxides at 1400 to 1500 ° C is made. The material obtained after heating is called clinker and gypsum cement grinding it with the right amount of different types achieved. Pozzolanic cement clinker and gypsum as well as the addition of pozzolan to be sure. Clinker grain size of 5-20 mm and its color is dark green.