CREATION OF HIGH-STRENGTH CONCRETE WITH IMPROVED BIOLOGICAL RESISTANCE INDICATORS BASED ON A COMPOSITE BINDER
The article presents the results of creating high-strength powder-activated concrete with reduced consumption of cement clinker and increased crack resistance and biological resistance due to a rationally selected composition, including a composite binder and activated mixing water. The essence of the invention consists in the fact that high-strength powder-activated concrete contains a composite binder based on Portland cement clinker in the amount of 70%, fly ash - 26%, two - water gypsum - 3% and sodium sulfate - 1%, filler - finely ground quartz powder, limestone with a specific surface area of 600 m2/kg, filler-quartz sand fraction 0.63-5.0 mm, hyper plasticizer brand "Melflux 2651 F" and water of mixing. As the hardening water, it contains mixing water that has undergone electrochemical and electromagnetic activation with the introduction of copper oxide-hydroxide compounds in the amount of 7...69 g/m3. The produced building materials can be used in the production of concrete structures and products based on cement binder for civil, industrial, and special-purpose buildings and structures, including buildings and structures whose structures have high requirements for crack resistance and biological resistance.