Modification of Cement Composites with Hydrothermal Nano-SiO2

The modification of cement concretes with various silica-containing additives is an urgent task that can significantly improve their physical and mechanical properties, as well as operational characteristics. In this paper, SiO2 sols and nanopowders based on a hydrothermal solution were obtained by a technological method using ultrafiltration membrane concentration. The physicochemical characteristics of silica nanoadditives were measured by...