This Technical Specification specifies a test method for the determination of the resistance of a hydraulically bound mixture to the cyclic action of freezing and thawing. The method described is suitable for hydraulically bound mixtures, including hydraulically stabilised soils, in accordance with EN 14227-1 to EN 14227-5 and the range of strengths covered by that standard. When required, a method for determining the change in height of a hydraulically bound subject to freeze thaw is specified in Annex A (normative). When required, a method for determining the freeze thaw resistance of a hydraulically bound mixture in the presence of salt is specified in Annex B (normative).