Innovation and Technology Center of Kovalska industrial and construction group has successfully completed the research of concretes with increased resistance to sulfate corrosion. The new concrete is also resistant to acidic soils and seawater. The predicted service life of products made from it is three times longer than that of products made from ordinary concrete grades.
The research and tests lasted over one and a half years, 13 concrete formulations were studied, and four compositions demonstrated resistance to acidic environment. Under conditions of aging in a solution of acids, the strength of the developed concrete demonstrates class B50 after 28 days, and class B70 after a year. It was also determined whether the concrete retains its rebar protective properties: the concrete has a high pH, and thus the rebar remains protected from corrosion. When tested in acidic environments, after a year the surface layers of concrete shown corrosion levels of only 0.5-0.7 mm. The water resistance of the product is equal to the W16 grade, the concrete can withstand more than 250 freeze and thaw cycles (F250 grade).
The industrial construction group Kovalska was created on the basis of the Kiev Plant of Reinforced Concrete Products No. 3. As of today, the group unites 11 enterprises for the production of building materials: concrete mixes, reinforced concrete products, concrete elements of landscape design, dry construction mixtures, granite, paint and decorative plaster. The group also includes the company Kovalska Real Estate, which is engaged in the construction of residential buildings in Kiev.
