The paper presents the 'anti-freezing' action of admixtures in the light of their influence on lowering the freezing point of fresh concrete. There have been presented the results of freezing point tests for selected admixtures to concrete mix in commercial concentrations, reduced to the concentrations applicable in dosing to a regular concrete mix, as well as the results of tests of the concrete mix with the use of the said admixtures. The results of the tests should be helpful in understanding which admixtures better support the protection of concrete that sets in low temperature conditions, and in particular - why the application of admixtures does not enable the abandoning of other protective activities at the early stage of concrete setting in minus temperatures.
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