Development of ultrasonic pulse velocity for Portland cement concrete at elevated temperature
DOI:
https://doi.org/10.37375/bsj.v8i21.4057Keywords:
Ultrasonic Pulse Velocity, Early-age concrete, Temperature effect, Curing temperature, Compressive strengthAbstract
Ultrasonic Pulse Velocity (UPV) is a widely adopted non-destructive testing method that has been used for more than sixty years to assess the condition of concrete structures and identify possible areas of weakness. In practice, it is frequently applied as an indirect means of estimating the compressive strength of concrete.
This paper examines how temperature affects the early evolution of Ultrasonic Pulse Velocity (UPV) in Portland cement concrete immediately after casting, along with its correlation to strength prediction. The approach was used to analyze the influence of different temperature conditions on UPV development during the initial curing stage.
The experimental findings show that UPV is highly sensitive to temperature during the first 24 hours after casting. Elevated curing temperatures accelerate the rate of increase and produce higher pulse velocity values compared to lower temperature conditions.
Furthermore, the relationship between compressive strength and UPV was evaluated. The results indicate that an exponential relationship offers a dependable model for estimating compressive strength from UPV measurements.
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