Vol.23, Special Issue, 2023, pp. S25–S34
UDC:

Recommendations defined by the European standard SRPS EN 206 for use of concrete in certain classes of exposure are not sufficient, and for this reason the standard SRPS U.M1.206 was also adopted, which is a national annex for its application. The effect of frost significantly affects the durability of the concrete structure because it can lead to its destruction. Protection is achieved by adding chemical admixture that entrains air into fresh concrete. The paper shows the possibility of applying the new additive Sika Aer Solid. Concrete resistance to frost, freeze-thaw resistance with de-icing salt, depth of penetration of water under pressure and chloride migration coefficient are tested in laboratory conditions and samples taken from concrete prefabricated elements. For the same class of consistency, concrete with Sika Air Solid, compared to concrete with air entraining admixture, had better properties both in the fresh and hardened state.

Keywords: durability of concrete, effect of frost, Sika Aer Solid, chloride migration coefficient