A preliminary study on ultrasonic non-destructive testing of concrete in maritime environment
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Inclou dades d'ús des de 2022
Cita com:
hdl:2117/333063
Tipus de documentText en actes de congrés
Data publicació2013
EditorCIMNE
Condicions d'accésAccés obert
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Abstract
This paper describes an experimental study in which non-destructive testing (NDT) of
concrete in marine and a non-marine environment was performed. Nine (150mm x 150mm x 150mm) cubic
specimens from three batches of concrete with w/c of 0.40, 0.50, and 0.60 and with appropriate
variations in cement and sand were prepared.
The hardened concrete specimens were cured under controlled laboratory conditions for 28 days. In
the first stage the cubic specimens were tested using through-transmission NDT technique
lying simply on laboratory floor, representing a typical of non-marine environment.
Afterwards, for simulating marine-like environment, the cubic specimens were retested
lying in a water tank. The underwater through-transmission of the specimens was performed.
The results obtained from both ways of testing were recorded and plotted in time and frequency
domains. P-wave velocities and attenuation of the wave signals were measured and
compared. Additionally, the wave reflection factor (WRF) was calculated and compared for
specimens tested under water.
The results show that the wave attenuation, the P-wave velocities in concrete, and the WRF are
highly influenced by the w/c ratio. The outcomes of this study can be useful in conducting research
on
testing actual maritime concrete structures.
CitacióShah, A.A.; Ribakov, Y.L.; Zhang, C. A preliminary study on ultrasonic non-destructive testing of concrete in maritime environment. A: MARINE V. "MARINE V : proceedings of the V International Conference on Computational Methods in Marine Engineering". CIMNE, 2013, p. 670-676. ISBN 978-84-941407-4-7.
ISBN978-84-941407-4-7
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