This European Standard specifies a test method which provides information on how an aggregate behaves when it is subjected to the cyclic action of freezing and thawing. NOTE The stresses on aggregates due to frost depend, amongst other factors, on the degree of water saturation as well as the rate of cooling. The results provide a means for assessing an aggregate's resistance to this form of weathering. The test is applicable to aggregates having a particle size between 4 mm and 63 mm.