EFFECT OF LENGTH OF FREEZING PERIOD ON DURABILITY OF CONCRETE

Concretes with different entrained air void systems were subjected to long and short cycles of freezing and thawing in 4% sodium chloride solution. Results indicated that the long freeze-thaw cycles were more severe than the short freeze-thaw cycles for the same number of cycles, even where air void spacing factors were no greater than 0.008 in. These findings agree with the ice accretion theory of frost damage in concrete.