Patent ID: 6253617
Filing Date: 2001-07-03
Classification: G01N

Abstract:
A method for testing at least one resistance of the group consisting of the freeze-thaw resistance and the de-icing agent resistance of solid bodies, forming test specimens, said method comprising the following steps:a) conditioning at least one solid body, forming a test specimen by adjusting a defined moisture condition to ensuing conditions of use;b) placing the conditioned solid body having a surface of exposure into a specimen container for a test medium in such a manner that the surface of exposure is downwardly faced and is in close contact with the test medium, said specimen being immersed in a coolant bath deeply enough to provide a good and uniform thermal contact between said coolant bath and said test medium;c) maintaining a contact between the solid body and the test medium long enough to reach a defined degree of saturation of the solid body;d) subjecting the test medium above the coolant bath to a predetermined temperature-time profile to simulate a continuous freeze-thaw cycle in the solid body, wherein the test specimen is held during method steps b) through d) in the specimen container in such a manner that moisture as well as heat are transported uniaxially and substantially perpendicular to the surface of exposure into the body; ande) carrying out at least one reference measurement to determine the change of a physical quantity of a solid body before and after the method steps b) through d), whereby internal damage of said solid body owing to attacks by freeze-thaw cycles and said test medium is determined.