Concrete block has the merit on saving materials 、 energy and protecting environment and so on comparing with fire-clay brick, and it's a new building material promoted vigorously by country, which has been widely used and developed.
Na_2O-CaO-Al_2O_3-SiO_2 glass-ceramics is a new kind of constructional material. It not only provides with good mechanical properties,but also possesses of good decorative effects.
According to data that surveyed and studied on cement plant, stir factory, building block factory in Nanjing, it has analyzed techno economics profits, and utilize the theory of technical economics studied to carry on case analysis to the Nanjing Dongji building block Ltd.