ULTRASONIC SLOW DYNAMICS TO PROBE CONCRETE AGING AND DAMAGE

被引：3

作者：

Larose, E. ^{[1
]}

Tremblay, N. ^{[1
]}

Payan, C. ^{[2
]}

Garnier, V. ^{[2
]}

Rossetto, V. ^{[3
,4
]}

机构：

[1] CNRS, ISTerre, BP 53, F-38041 Grenoble, France

[2] Aix Marseille Univ, LMA CNRS UPR 7051, Marseille, France

[3] CNRS, LPMMC, F-38042 Grenoble, France

[4] Univ Grenoble, F-38042 Grenoble, France

来源：

REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 32A AND 32B | 2013年 / 1511卷

关键词：

Ultrasonic; Coda Waves; Diffuse Ultrasound; Multiple Scattering; Slow Dynamics; Multicomposite Materials; Aging; Damage; VELOCITY;

D O I：

10.1063/1.4789195

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The stiffness of concrete experiences a drop immediately after a moderate mechanical solicitation. Then the stiffness rises back logarithmically toward its initial value. This Slow Dynamics behavior has been probed by macroscopic quantities averaged over the sample volume, including resonant frequency. This article presents a different approach based on diffuse acoustic wave spectroscopy, a technique that is directly sensitive to the details of the sample structure. The parameters of the dynamics are found to depend on mechanical and thermal damage of the medium. Results confirm that slow dynamics can be used onsite to assess the level of damage of a given structure.

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收藏

页码：1317 / 1324

页数：8

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