The ultrasonic pulse velocity (UPV) in water-saturated is higher than in dry concrete. However, moisture on the UPV is defined within a wide range: — from to quite significant (16 per cent). The nature of "UPV − concrete moisture" correlation is also interpreted in different — both as linear and as exponential. This paper reviews various degrees of moisture saturation influence the UPV in when sounding is carried out by the frequently used testing method — the indirect transmission by using wave pulse. Research was conducted on specimens both under standard conditions and at elevated . The results show a sudden UPV increase at the when the maximum water absorption in concrete is .
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Lencis et al. (2013) studied this question.
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