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Validation of simple nondestructive method for evaluation of cover concrete quality

Tóm tắt:

The Water Intentional Spraying Test (WIST) was originally proposed as a simple nondestructive method for evaluating the cover concrete quality based on the “repetition number of water spraying,” rN. The validity of the test was verified in the present study by comparing rN with the coefficient of air permeability, kT, determined by the Torrent test. Both tests were conducted on three-month-old concrete specimens produced with different cement types, water-to-cement ratios, and curing periods, using different measurement heights. A good relationship was observed between kT and rN, with the WIST also found to be sensitive for the detection of poor-quality concrete.

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