A team of scientists from the South Ural State University (SUSU) in the Russian city of Chelyabinsk has created frost-resistant concrete for severe Arctic weather conditions.
The university assured that it is possible to obtain a material with an ultra-high resistance to frost by changing the structures of the hydrate phases of the cement stone.
The scientists conducted laboratory research in a 5% table salt solution at a temperature of 50 degrees below zero. According to the Russian media Lenta.ru, the data obtained during the study reveals that the degree of frost resistance of concrete can vary from four to five times “in relation to constant water-cement, but with the introduction of various modifiers that affect the composition of the hydration phases “.
“A stable hydrosilicate gel has been formed when the portlandite content in the cement stone does not exceed 5%. This was achieved by introducing optimal doses of modern modifying additives,” explained a scientist at the Russian university SUSU.
With these obtained qualities, the scientists have obtained a resistant concrete that can be used in the sphere of construction in the Arctic, Siberia and the Far East.