Technogenic resources for nanotechnologies in construction

Abstract

Abstract.A large group of industrial wastes from water purification, treatment and softening has been considered. The reference is made to the fact that slurries are a unique man-made product technologically ready for use and constantly restocking. Slurries have been classified by conditions of the formation, composition, chemical and physical properties. The nanoscale structural parameters of the slurry particles (the size distribution and fractal dimension) have been determined by the neutron small-angle scattering method. The conducted researches allow slurries to be considered a nanotechnogenic raw material. The use of slurries as additives in the building material production process reduces the harmful influence of industrial wastes on the environment and creates a significant reserve of material and energy resources in the construction industry.

Nanoscale Control of Hydrated Portland Cement Structure

“…According to characteristic features of their influence on the properties of resulting building materials, such additives can be described as nanoadditives or nanomaterials. From the point of view of their effects, raw sludges [7], in their turn, can be referred to as filling additives (e.g., carbonate sludges) or as structure forming additives (for example, alumo-alkaline sludges).…”