High performance fibre-reinforced cementitious composite (CARDIFRC) - Performance and application to retrofitting

被引：128

作者：

Farhat, F. A. ^{[1
]}

Nicolaides, D. ^{[1
]}

Kanellopoulos, A. ^{[1
]}

Karihaloo, B. L. ^{[1
]}

机构：

[1] Cardiff Univ, Sch Engn, Cardiff CF24 3AA, Wales

来源：

ENGINEERING FRACTURE MECHANICS | 2007年 / 74卷 / 1-2期

关键词：

D O I：

10.1016/j.engfracmech.2006.01.023

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This paper describes first some of the recent performance checks on the high performance fibre-reinforced cementitious composite CARDIFRC and then its application to the retrofitting of damaged concrete beams. It is shown that an even distribution of fibres throughout the bulk of the material is crucial to its excellent fatigue performance and to the reduction in the autogenous shrinkage strains. The distribution of fibres in beams, cylinders and strips is examined using computerised tomography imaging and traditional image analysis. Thin strips of CARDIFRC are used to retrofit damaged concrete beams which are subjected to thermal cycling. It is shown that neither the load carrying capacity of the retrofitted beams nor the bond between retrofit strips and concrete deteriorates with thermal cycling. The load carrying capacity of retrofitted beams is predicted with a model based on fracture mechanics, and the predictions are shown to be in good agreement with test data. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：151 / 167

页数：17

共 23 条

[1] Fracture model for flexural failure of beams retrofitted with CARDIFRC [J].