DS EN 1367-6:2008 Tests For Thermal And Weathering Properties Of Aggregates - Part 6: Determination Of Resistance To Freezing And Thawing In The Presence Of Salt (Nacl) Describes a method of assessing the frost resistance of an aggregate when it is subjected to the cyclic action of freezing and thawing in the presence of 1% solution of NaCl in de-ionized or distilled