Comparison of domestic and European methods of testing concrete for frost resistance

The need for the existence of the test methods of concrete on frost-resistance both in the Russian Federation and the European Union due to the fact that much of Russia and much of the territories of the European countries are in the temperate zone, which is characterized by multiple transitions so-temperature through zero within calendar year, as well as the presence of snow cover lasting from 3 to 8-9 months. Currently, the Russian Federation, frost resistance of concrete is determined in accordance with GOST 10060-2012. “Concrete Methods for determining frost”, whereby the test was carried out on concrete samples-cubes by their multiple pope-belt freezing and thawing in water-saturated condition, using the quality saturation medium water or to accelerate the test, 5%-aqueous solution of sodium chlorite-grained. Reason to assume that the test concretes confirmed predetermined design mark on frost resistance is the simultaneous implementation of after-following conditions: no visible external damage samples in the form of chips, tre-communities, peeling and so on and decrease the compressive strength as a result of a predetermined number testing cycles is not more than 10% (in light concrete - not more than 15%) and the amount of weight loss of no more than 2%. Strength criteria laid down in the concrete domestic test method to frost more stringent than European, because of more severe climate that in most regions of the Russian Federation in comparison with European countries.