Wave dispersion and attenuation in fresh mortar: theoretical predictions vs. experimental results

被引：70

作者：

Aggelis, DG

Polyzos, D

Philippidis, TP

机构：

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

[2] FORTH, Inst Chem Engn & High Temp Chem Proc, Patras 26500, Greece

来源：

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | 2005年 / 53卷 / 04期

关键词：

fresh concrete; ultrasonic wave dispersion; attenuation; water-to-cement ratio;

D O I：

10.1016/j.jmps.2004.11.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present paper, the dispersive and attenuative behavior of fresh cementitious material is examined through a series of ultrasonic, through-transmission measurements. The sand size and content dominate attenuation behavior, while the effect of entrapped air bubbles is mostly obvious at lower frequencies elevating phase velocity to values much higher than that of water. Theoretical investigation seems to explain the observed dispersion and attenuation mainly through two scattering interactions: sand embedded in paste and air bubbles in mortar. The predictions made by scattering theory follow closely the experimental data. The possibility of material characterization is discussed. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：857 / 883

页数：27

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