Editorial

The increasing demand of infrastructures in emerging\ncountries and the goal of reducing carbon dioxide emissions\nhave multiplied the studies on the cementitious properties\nof numerous local by-products. In the present issue, research\nis described on the characterisation of materials made of metakaolin, phophogypsum and magnetite–silica nanoparticles\n(Bolhassani and Sayyahmanesh, 2015; Guo and Shi, 2015; Liu\net al., 2015). The trend is noticed also in committees and meetings where sustainability is subject of sessions and objective\nof whole congresses. It can be said that it denotes the social\nsensitivity of researchers for contributing to a cleaner environment through the intelligent use of local by-products. The use\nof science helps to create more ecological building products.