The Open Civil Engineering Journal




ISSN: 1874-1495 ― Volume 13, 2019
RESEARCH ARTICLE

Performance of Two-way RC Slabs Retrofitted by Different Configurations of High Performance Fibre Reinforced Cementitous Composite Strips



Mahdi A. Abbaszadeh1, *, Mohammad K. Sharbatdar1, Ali Kheyroddin2
1 Faculty of Civil Engineering, Semnan University, Semnan, Iran
2 Faculty of Civil Engineering, Semnan University, Semnan, Iran and Visiting Scholar at the Department of Civil Engineering and Applied Mechanics, University of Texas, Arlington, TX, USA

Abstract

Introduction:

Considering the promising results gained from several studies using cementitious composites with strain hardening behaviour (High Performance Fibre Reinforced Cementitious Composites, HPFRCC) for repair and retrofitting concrete flexural members, in this paper the possibility of using HPFRCC for retrofitting two-way RC slabs is investigated.

Methods:

A total of five two-way slabs were made and tested to failure. Three slabs were retrofitted with a variety of different types of retrofit configurations and two other slabs, having low and conventional reinforcement ratios, were used as control slabs. A novel technique of bonding, designated NSM-HPFRCC, is proposed. Flexural responses of all slabs are evaluated and the bonding behaviour and associated failure modes are investigated.

Results and Conclusion:

It is shown that the proposed retrofit configurations, especially when accompanied by the NSM-HPFRCC technique, can greatly improve the flexural performance of retrofitted slabs; hence, they can be used successfully to retrieve the flexural reinforcement deficiency of weak slabs.

Keywords: Two-way slabs, Steel fibres, HPFRCC, Retrofit, Flexural performance, NSM technique, Composites.


Article Information


Identifiers and Pagination:

Year: 2017
Volume: 11
First Page: 650
Last Page: 663
Publisher Id: TOCIEJ-11-650
DOI: 10.2174/1874149501711010650

Article History:

Received Date: 08/03/2017
Revision Received Date: 05/06/2017
Acceptance Date: 12/07/2017
Electronic publication date: 12/08/2017
Collection year: 2017

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© 2017 Abbaszadeh et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


* Address correspondence to this author at the Faculty of Civil Engineering, Semnan University, Semnan, Iran; P,O Box: 3513119111; Tel: +1 604 561 0529; E-mails: Mahdi.Abbaszadeh@yahoo.com; Abbaszadeh@iaumalard.ac.ir



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