Journal
ULTRASONICS
Volume 43, Issue 7, Pages 584-595Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultras.2004.12.001
Keywords
concrete; dispersion; attenuation
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Results from an experimental study concerning wave propagation in cementitious materials are presented in this paper. Narrow band pulses at several frequencies were introduced into specimens of cement paste, mortar and concrete allowing direct measurement of longitudinal wave velocities and amplitude for each frequency. It is shown that aggregate content play an important role in wave propagation increasing considerably the wave velocity, while the aggregate size seems to control the attenuation observed. Slight velocity variations observed with frequency are discussed in relation to the degree of inhomogeneity of the materials. (c) 2004 Elsevier B.V. All rights reserved.
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