Study of Fine-Grained Cement Concrete with Ground Glass

Abstract

The large surface area of the aggregate in small-grained concrete causes an increased consumption of the binder (cement) and water, increased porosity, low bending, tensile and shock loads. To a large extent, these disadvantages can be reduced by enhancing the adhesive interaction of the cement stone (binder paste) with the surface of the aggregate. However, the adhesion strength of a cement stone to the surface of sand grains is less than the strength of the cement stone. Therefore, the latter is not completely used in cement–sand mortar. The substance from which the aggregate grains are composed may have an amorphous or crystalline structure. The amorphous structure of a material determines its isotropy. In this case, glass may be a suitable quartz-containing amorphous material. It was revealed that when using materials characterized by a vitreous structure as a filler, the adhesive interaction of their particles with the cement stone (binder paste) increases due to an increase in the quality of the mortar layer between them and the cement stone (binder paste), which is due to the fact that glass particles have significantly fewer defects in comparison with particles of materials characterized by a crystalline structure.KeywordsFine-grained concreteAggregateGround glass wasteCement stone