Study of the effect of penetrating materials for restoration and repair of navycon tm buildings and structures
Abstract
Establishment and use of regularities in the formation of the structure of cement composites to improve their hydrophysical and physico-mechanical characteristics.
It was established that the increase in water resistance is ensured by the synthesis of additional crystal hydrates and their formation on the surfaces of pores and capillaries taking into account their electrosurface properties, in particular, it was established that crystal hydrates form electroheterogeneous contacts with the structural elements of cement stone. This makes it possible to reduce the thickness of the contact zone, which strengthens and seals the structure of the material as a whole.
It was established that the penetration of the components of the waterproofing composition (water-soluble salts of nitrates, chlorides, sulfates) into the porous material is ensured due to the diffusion of their ions through water-saturated pores and capillaries, and the depth of penetration is the length of the diffusion path over time, which corresponds to the setting time of the waterproofing composition.
"NAVYCON" protective materials are used as a coating during the construction and repair of building structures that are under the influence of water, aggressive environments, temperature changes and high loads.
Materials based on inorganic binders, produced in the form of dry mixtures of penetrating action, are used on bases and substrates with developed capillary porosity (concrete, reinforced concrete, brickwork, etc.).
Composite material based on TM "NAVYCON" cement with compressive strength up to 61.0 MPa and flexural strength up to 9.1 MPa, adhesion to the concrete base up to 3.3 MPa, water resistance not less than W12, frost resistance more than F400, shrinkage deformation after 3 months at 0.04%, which is several times higher than the requirements of regulatory documents of Ukraine for similar warehouses. The composite material is effective under both direct and reverse water pressure. Effective in joint work with polymer coating. Effective for passivation and transformation of metal surfaces damaged by corrosion.
The use of the additive will significantly increase the profitability of concrete mixes, because when the complex chemical additive developed jointly with the company Navikon -Ukraine is introduced, the physical characteristics of concrete will improve, the cost will significantly decrease and the quality will increase by an order of magnitude.
