Application of acoustic tests to mechanical characterization of masonry mortars

被引：20
|
作者：
Haach, Vladimir G. [1 ]
Carrazedo, Ricardo [1 ]
Oliveira, Luciane M. F. [1 ]
Correa, Marcio R. S. [1 ]
机构：
[1] Univ Sao Paulo, Sch Engn Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil
来源：
NDT & E INTERNATIONAL | 2013年 / 59卷
关键词：
Acoustic tests; Elastic modulus; Mortar; Masonry;
D O I：
10.1016/j.ndteint.2013.04.013
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Resonant acoustic tests appeared recently as an interesting nondestructive alternative that can be applied for the determination of elastic properties with low cost and accuracy. Besides, the same sample can be tested repeatedly if necessary, simplifying laboratorial procedures for long term monitoring. This paper presents an experimentally based evaluation of elastic modulus of general mortars specified in British standard for masonry through both conventional (destructive) and acoustic (nondestructive) tests. Four mortar mixes were produced and cylindrical specimens (50 mm x 100 mm) were cast. The specimens were subjected to uniaxial compression, allowing the determination of the static elastic modulus. Acoustic tests were performed prior to the static tests so that the dynamic elastic modulus was characterized. A very good correlation between dynamic and static elastic moduli was achieved so that the second can be easily estimated from the first. Additionally, the dynamic elastic modulus is better correlated to the compressive strength of mortars than the static elastic modulus. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：18 / 24
页数：7
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