Cracking behavior in reinforced concrete members with steel fibers: A comprehensive experimental study

被引：97

作者：

Tiberti, Giuseppe ^{[1
]}

Minelli, Fausto ^{[1
]}

Plizzari, Giovanni ^{[1
]}

机构：

[1] Univ Brescia, DICATAM Dept Civil Engn Architecture Land Environ, I-25123 Brescia, Italy

来源：

CEMENT AND CONCRETE RESEARCH | 2015年 / 68卷

关键词：

Tensile properties; Fracture toughness; Durability; Fiber reinforcement; Crack control; TENSION; STRENGTH; LININGS;

D O I：

10.1016/j.cemconres.2014.10.011

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The addition of fibers in concrete determines a cracking phenomenon characterized by narrower and more closely spaced cracks, with respect to similar members without fibers. Fiber Reinforced Concrete (FRC) may significantly improve the tension stiffening into the undamaged portions of concrete among cracks, and, in addition, may provide noticeable residual stresses at a crack due to the bridging effect provided by its enhanced toughness. This paper aims at further investigating the ability of fibers in controlling cracks by discussing more than ninety tension tests on Reinforced Concrete (RC) prisms, carried out at the University of Brescia, having different sizes, reinforcement ratios, amount of fibers and concrete strengths. In particular the influence of FRC in reducing the crack spacing and the crack width is evaluated as a function of the FRC toughness. Finally, the most recent available models for predicting the crack spacing of FRC composites are evaluated and critically discussed. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：24 / 34

页数：11

共 32 条

[1]

Abrishami HH, 1997, ACI STRUCT J, V94, P769

[2]

[Anonymous], 2005, EN10080 UNI

[3]

[Anonymous], 2005, Test Method for Metallic Fibered ConcreteMeasuring the Flexural Tensile Strength Limit of Proportionality (LOP) Residual, NEQ

[4]

[Anonymous], 1976, 6556 UNI