Experimental study of wave dispersion and attenuation in concrete

被引：200

作者：

Philippidis, TP

Aggelis, DG

机构：

[1] Univ Patras, Dept Mech Engn & Aeronaut, Rion 26504, Greece

[2] FORTH ICE HT, Patras 26500, Greece

来源：

ULTRASONICS | 2005年 / 43卷 / 07期

关键词：

concrete; dispersion; attenuation;

D O I：

10.1016/j.ultras.2004.12.001

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

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.

引用

页码：584 / 595

页数：12

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