期刊
THEORETICAL AND APPLIED FRACTURE MECHANICS
卷 91, 期 -, 页码 66-75出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tafmec.2017.03.015
关键词
Fibre reinforced concrete; Fracture toughness; Micro-synthetic polypropylene fibrillated; FRC; Modified two-parameter fracture model
资金
- Italian Ministry for University and Technological and Scientific Research (MIUR), Research Grant PRIN [2015JW9NJT]
Low fracture toughness of concrete represents a serious shortcoming. An effective way to improve the concrete toughness is represented by the dispersion (during mixing) of discontinuous fibres into the concrete mix. The principal beneficial effect of fibres is the crack bridging in the cementitious matrix, providing resistance to crack propagation before fibre debonding and/or pulling out or failure. In the present paper, the fracture behaviour of FRC (fibre reinforced concrete) specimens is examined, with micro synthetic polypropylene fibrillated fibres being randomly distributed in concrete. The modified two parameter model, proposed by the authors to calculate Mode I plain-strain fracture toughness for quasi-brittle material, is able to take into account the possible crack deflection (kinked crack) during stable crack propagation. (C) 2017 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据