Laboratory freezing and thawing tests (A.S.T.M. test No. C4744 and modifications thereof) were correlated with results of outdoor-exposure tests. This correlation was based on saturation coefficient, absorption, rate of absorption, strength, and method of manufacture. New York building brick of the soft-mud and stiff-mud types were investigated. The results show that those brick within a specific absorption range and with the greatest strength and the smallest saturation coefficient will have lower loss in the freezing-thawing tests.
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