Effect of Using Steel Bar Reinforcement on Concrete Quality by Ultrasonic Pulse Velocity Measurements

Non-destructive tests (NDTs) represent one of the solutions that aid engineers in evaluating the strength of materials. However, the results obtained using such tests are still questionable as they may be affected by different factors. One of these factors is the presence of steel reinforcement in concrete. An experimental investigation is presented in this study to investigate the effect of the single reinforcement steel bar on ultrasonic pulse velocity (UPV). Seven concrete beams, one containing no steel and the other six beams containing varying bar diameter and cover thicknesses, were tested. UPV measurements were obtained using the indirect method and then modified to eliminate the effect of the steel bar. To provide the scientific evidence to give a reliable and reasonable solution, a statistical analysis was also conducted. The results show that a large bar diameter and a small cover thickness significantly influence the measured UPV. Measured UPV with a spacing between transducers up to 500 mm can effectively be used to predict the compressive strength of concrete after the modification of the initial UPV.

[1]  I. Dominik,et al.  Non-Destructive Acoustical Rock Bolt Testing System with Intelligent Filtering in Salt Mine ‘Wieliczka’ , 2021, Energies.

[2]  A. Büyüksaraç,et al.  The Relationship Between Concrete Strengths Obtained by Destructive and Non-destructive Methods , 2020 .

[3]  A Ndagi,et al.  Non-destructive assessment of concrete deterioration by ultrasonic pulse velocity: A review , 2019, IOP Conference Series: Earth and Environmental Science.

[4]  B. Rai,et al.  Pulse velocity–strength and elasticity relationship of high volume fly ash induced self-compacting concrete , 2019, Journal of Structural Integrity and Maintenance.

[5]  M. Chemrouk,et al.  The influence of steel reinforcement on ultrasonic pulse velocity measurements in concrete of different strength ranges , 2019, IOP Conference Series: Materials Science and Engineering.

[6]  I. Dominik,et al.  Fast, non-destructive measurement of roof-bolt loads , 2019, Studia Geotechnica et Mechanica.

[7]  J. Greenhouse,et al.  On Teaching Statistical Practice: From Novice to Expert , 2018 .

[8]  Jean-Paul Balayssac,et al.  Development of a calibration methodology to improve the on-site non-destructive evaluation of concrete durability indicators , 2018 .

[9]  D. Breysse,et al.  Non destructive assessment of in situ concrete strength: comparison of approaches through an international benchmark , 2017 .

[10]  Laurence J. Jacobs,et al.  Quantitative evaluation of carbonation in concrete using nonlinear ultrasound , 2016 .

[11]  Denys Breysse,et al.  Non-destructive strength evaluation of concrete: Analysis of some key factors using synthetic simulations , 2015 .

[12]  A. Reguly,et al.  The use of the ultrasound measurement technique for the evaluation of mechanical properties of the ASTM A36 steels , 2011 .

[13]  Bashar S. Mohammed,et al.  Evaluation of rubbercrete based on ultrasonic pulse velocity and rebound hammer tests , 2011 .

[14]  I. Lawson,et al.  Non-Destructive Evaluation of Concrete using Ultrasonic Pulse Velocity , 2011 .

[15]  S. Simoes,et al.  Ultrasonic indirect method for evaluating clear wood strength and stiffness , 2009 .

[16]  Yiching Lin,et al.  Investigation of Pulse Velocity-Strength Relationship of Hardened Concrete , 2007 .

[17]  Alexandre Lorenzi,et al.  Ultrasonic Pulse Velocity Analysis in Concrete Specimens , 2007 .

[18]  Sudhanshu K. Mishra.  Median as a Weighted Arithmetic Mean of All Sample Observations , 2004 .

[19]  Hisham Qasrawi,et al.  Concrete strength by combined nondestructive methods simply and reliably predicted , 2000 .

[20]  Ahmed E. Ben-Zeitun,et al.  Use of pulse velocity to predict compressive strength of concrete , 1986 .

[21]  J. H. Bungey,et al.  The Influence of Reinforcement on Ultrasonic Pulse Velocity Testing , 1984 .

[22]  H. Chung,et al.  Effects of embedded steel bars upon ultrasonic testing of concrete , 1978 .

[23]  R. Jones,et al.  Recommendations for testing concrete by the ultrasonic pulse method , 1969 .