Study of the influence of microstructural parameters on the ultrasonic velocity in steel-fiber-reinforced cementitious materials

被引：17

作者：

Acebes, M. ^{[2
]}

Molero, M. ^{[1
,3
]}

Segura, I. ^{[2
]}

Moragues, A. ^{[4
]}

Hernandez, M. G. ^{[1
]}

机构：

[1] CAEND CSIC UPM, Ctr Acust Aplicada & Evaluac No Destruct, Madrid 28500, Spain

[2] Ctr Tecnol CARTIF, Valladolid, Spain

[3] Univ Nacl Autonoma Mexico, Dpto Fis, Fac Ciencias, Mexico City 04510, DF, Mexico

[4] UPM, Dpto Ingn Civil & Construcc, Madrid 28040, Spain

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2011年 / 25卷 / 07期

关键词：

Ultrasonic velocity; Micromechanical model; Steel-fiber-reinforced concrete; APPROXIMATE ELASTIC-MODULI; MECHANICAL-PROPERTIES; 3; PHASES; MODEL; MORTAR; INCLUSION; CONCRETE; POROSITY; RATIO; PASTE;

D O I：

10.1016/j.conbuildmat.2010.12.062

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, the influence of steel fibers on the ultrasonic velocity of steel-fiber-reinforced cementitious materials was studied using a micromechanical model. To this end, a three-phase micromechanical model was extended and generalized to multiphase materials. Firstly, such a model was used to predict the influence of the geometry and volume fraction of steel inclusions on the ultrasonic velocity of steel-fiber-reinforced cementitious materials. Experimental validation was carried out on steel-reinforced and non-reinforced mortar specimens through destructive and non-destructive testing by ultrasound. Comparisons between predicted and measured ultrasonic velocity were in good agreement, with errors less than 1.5%. Moreover, the model was also validated on experimental data obtained from steel-fiber-reinforced concrete specimens [c et al. Constr Build Mater 2007;21:1250-31. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3066 / 3072

页数：7

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