A COMPARISON OF FREEZING AND THAWING DURABILITY OF NON-AIR ENTRAINED CONCRETE PAVERS UNDER ASTM C 67 AND ASTM C 666

ASTM C 936 currently evaluates the resistance to freezing and thawing of paving blocks by either historical performance in the field or by an accelerated laboratory test found in ASTM C 67. Criticisms have been raised by both paver manufacturers and private agencies regarding the ability of this procedure to adequately simulate the exposure conditions to which block pavements may encounter. This paper attempts to address these concerns by comparing the performance of concrete pavers tested under ASTM C 67 conditions to that of the most widely used freezing and thawing standard for concrete products, ASTM C 666. A comparison of the test results revealed significant variation in the amount and rate of deterioration, and the mode of failure.