Theoretical Models and Experimental Techniques in Nondestructive Evaluation of Concrete

Abstract:

When evaluating concrete strength, common opinion is that adequate precisions can be achieved only by a particular or even total destruction. However, such methods are not always applied, besides they are very laborious. The NDE methods have a number of merits, when compared with destructive ones: a possibility to find cracks and hidden flaws in concrete; besides, they show good results in testing materials of other types, such as metals and composites. At the same time, application of NDE methods to concretes is difficult because of their complex internal structure. No existing theory can predict these properties of the transmitted wave. Therefore, the main goal of the present work is to propose a theoretical model enabling the wave penetration of ultrasonic wave through a medium with multiple internal obstacles to be described adequately. Practical applications of this ultrasonic method is toward the evaluation of mechanical properties of concrete, where the influence of internal dislocations, such as pores and cracks, is of significant importance.

• Periodical: Key Engineering Materials (Volumes 293-294)
• Pages: 207-216
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.293-294.207
• Online since: September 2005
• Authors: Michele Brigante, Mariano Modano
• Keywords: Acoustic, Concrete, Non-Destructive

References

[1] J. Krautkramer: Utrasonic Testing of Materials (Springer-Verlag, Berlin 1990).

[2] A. Ishimaru: Wave Propagation and Scattering in Random Media, (Academic, New York 1978).

[3] J.D. Achenbach: Wave Propagation in Elastic Solids (North-Holland, Amsterdam 1973).

[4] Y. -H. Pao and C. -C. Mow: Diffraction of Elastic Waves and Dynamic Stress Concentration (Crane Russaki, New York 1973).

[5] D. Rapaport: The Art of Molecular Dynamics Simulation (Cambridge University Press, Cambridge 1996).

[6] A. Derode, A. Tourin, and M. Fink: J. Acoust. Soc. Amer. Vol. 107 (2000), p.2987.

[7] A. Tourin et al.: J. Acoust. Soc. Amer. Vol. 108 (2000), p.503.

[8] A. Tourin, M. Fink, and A. Derode: Waves in Random Media, Vol. 10 (2000), p.31.

[9] V.M. Malhotra and N.J. Carino: Handbook on Nondestructive Testing of Concrete (CRC Press, New York 1991).

[10] J.D. Achenbach, A.K. Gautesen, and H. McMaken: Ray Methods for Waves in Elastic Solids (Pitman, Boston 1982).

[11] H. Kuttruff: Room Acoustics (Elsevier, Amsterdam 1991).

[12] O.C. Zienkiewicz and R.L. Taylor: The Finite Element Method (5-th ed. vol. 1, Elsevier, New York 2000).

[13] P.K. Banerjee and R. Butterfield: Boundary Element Methods in Engineering Science (McGraw Hill, London 1981).

[14] J.E. Goodman and J. O'Rourke: Handbook of Discrete and Computational Geometry (CRC, Boca Raton 1997).

[15] L.M. Brekhovskikh: Waves in Layered Media (2-nd ed, Academic Press, New York 1980).