Deflection behavior of concrete beams reinforced with PVA micro-fibers

被引：96

作者：

Hamoush, Sameer ^{[1
]}

Abu-Lebdeh, Taher ^{[1
]}

Cummins, Toney ^{[2
]}

机构：

[1] N Carolina Agr & Tech State Univ, Dept Civil Architectural & Environm Engn, Greensboro, NC 27411 USA

[2] USA, Corps Engineers, Concrete & Mat Div, Vicksburg, MS 39180 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2010年 / 24卷 / 11期

关键词：

Deflection; Moment-curvature; Stress-strain; Micro-fibers reinforced concrete; Flexural strength; Strain-softening; Ductility; Toughness index; Load-deflection curve; COMPOSITES; MODEL;

D O I：

10.1016/j.conbuildmat.2010.04.027

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents experimental and theoretical investigations on the stress-strain and load-deflection behavior of Poly Vinyl Alcohol (PVA) microfiber reinforced concrete composites. The actual stress-strain relationships in both compression and tension were established by performing a series of compression and tension tests on PVA micro-fibers reinforced concrete specimens. The proposed deflection model was developed by using the well known moment-curvature and conjugate beam methods. Comparisons with the experimental data indicated that the model can be efficiently used to predict the load-deflection behavior of the microfiber reinforced concrete beams. Flexural results indicated that the addition of PVA micro-fibers significantly increases toughness and ductility. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2285 / 2293

页数：9

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