Effect of mix design methods on the mechanical properties of steel fibre-reinforced concrete prepared with recycled aggregates from precast waste

Emmanuel Ejiofor Anike; Messaoud Saidani; Adegoke Olubanwo; Mark Tyrer; Esmaiel Ganjian

doi:10.1016/j.istruc.2020.05.038

Effect of mix design methods on the mechanical properties of steel fibre-reinforced concrete prepared with recycled aggregates from precast waste

Emmanuel Ejiofor Anike, Messaoud Saidani, Adegoke Olubanwo, Mark Tyrer, Esmaiel Ganjian

EEC School of Energy, Construction and Environment

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

131 Downloads (Pure)

Abstract

This research investigates the impact of mix design methods on the mechanical characteristics of steel fibre-reinforced concrete (SFRC) made with recycled aggregates (RA) obtained from a precast waste concrete. The experimental campaign was carried out in two phases. In phase I, three types of steel fibre (SF) differing only in shape were examined. Then, eight mixes were formulated, considering a range of SF volume ratios from 0.125% to 1.5%, using both normal and the Equivalent Mortar Volume (EMV) mix design methods. In phase II, a reference mix and two recycled aggregate concrete mixes were developed, one designed with normal method and the other with the EMV technique and incorporating their associated optimum SF content obtained in phase I. The results show that the mechanical properties of SFRC proportioned with the EMV approach is not adversely affected and that water absorption capacity of the concrete is improved with this method compared to the traditional method. Also, mix design method adopted for recycled concrete affects the optimum SF volume ratio.

Original language	English
Article number	STRUCTURES-D-19-00876R1
Pages (from-to)	664-672
Number of pages	9
Journal	Structures
Volume	27
Early online date	1 Jul 2020
DOIs	https://doi.org/10.1016/j.istruc.2020.05.038
Publication status	Published - Oct 2020

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Structures, 27 (2020)] DOI: 10.1016/j.istruc.2020.05.038

© 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Funder

Funding Information: The authors acknowledge the contributions of Litecast Homefloors Limited and Dalian HARVEST Metal Fibres Co. Limited who supplied the materials used for this research free of charge. Publisher Copyright: © 2020 Institution of Structural Engineers Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

Mix design
Optimization
Precast waste
Recycled aggregate concrete
Steel fibre

ASJC Scopus subject areas

Civil and Structural Engineering
Architecture
Building and Construction
Safety, Risk, Reliability and Quality

Access to Document

10.1016/j.istruc.2020.05.038

Post-PrintAccepted author manuscript, 1.42 MBLicence: CC BY-NC-ND

https://www.sciencedirect.com/science/article/pii/S2352012420302502?dgcid=author

Cite this

@article{4a7a2fb084004b5885c3041a3ab0d380,

title = "Effect of mix design methods on the mechanical properties of steel fibre-reinforced concrete prepared with recycled aggregates from precast waste",

abstract = "This research investigates the impact of mix design methods on the mechanical characteristics of steel fibre-reinforced concrete (SFRC) made with recycled aggregates (RA) obtained from a precast waste concrete. The experimental campaign was carried out in two phases. In phase I, three types of steel fibre (SF) differing only in shape were examined. Then, eight mixes were formulated, considering a range of SF volume ratios from 0.125% to 1.5%, using both normal and the Equivalent Mortar Volume (EMV) mix design methods. In phase II, a reference mix and two recycled aggregate concrete mixes were developed, one designed with normal method and the other with the EMV technique and incorporating their associated optimum SF content obtained in phase I. The results show that the mechanical properties of SFRC proportioned with the EMV approach is not adversely affected and that water absorption capacity of the concrete is improved with this method compared to the traditional method. Also, mix design method adopted for recycled concrete affects the optimum SF volume ratio.",

keywords = "Mix design, Optimization, Precast waste, Recycled aggregate concrete, Steel fibre",

author = "Anike, {Emmanuel Ejiofor} and Messaoud Saidani and Adegoke Olubanwo and Mark Tyrer and Esmaiel Ganjian",

note = "NOTICE: this is the author{\textquoteright}s version of a work that was accepted for publication in Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Structures, 27 (2020)] DOI: 10.1016/j.istruc.2020.05.038 {\textcopyright} 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ ",

year = "2020",

month = oct,

doi = "10.1016/j.istruc.2020.05.038",

language = "English",

volume = "27",

pages = "664--672",

journal = "Structures",

issn = "2352-0124",

publisher = "Elsevier",

}

TY - JOUR

T1 - Effect of mix design methods on the mechanical properties of steel fibre-reinforced concrete prepared with recycled aggregates from precast waste

AU - Anike, Emmanuel Ejiofor

AU - Saidani, Messaoud

AU - Olubanwo, Adegoke

AU - Tyrer, Mark

AU - Ganjian, Esmaiel

N1 - NOTICE: this is the author’s version of a work that was accepted for publication in Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Structures, 27 (2020)] DOI: 10.1016/j.istruc.2020.05.038 © 2020, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

PY - 2020/10

Y1 - 2020/10

N2 - This research investigates the impact of mix design methods on the mechanical characteristics of steel fibre-reinforced concrete (SFRC) made with recycled aggregates (RA) obtained from a precast waste concrete. The experimental campaign was carried out in two phases. In phase I, three types of steel fibre (SF) differing only in shape were examined. Then, eight mixes were formulated, considering a range of SF volume ratios from 0.125% to 1.5%, using both normal and the Equivalent Mortar Volume (EMV) mix design methods. In phase II, a reference mix and two recycled aggregate concrete mixes were developed, one designed with normal method and the other with the EMV technique and incorporating their associated optimum SF content obtained in phase I. The results show that the mechanical properties of SFRC proportioned with the EMV approach is not adversely affected and that water absorption capacity of the concrete is improved with this method compared to the traditional method. Also, mix design method adopted for recycled concrete affects the optimum SF volume ratio.

AB - This research investigates the impact of mix design methods on the mechanical characteristics of steel fibre-reinforced concrete (SFRC) made with recycled aggregates (RA) obtained from a precast waste concrete. The experimental campaign was carried out in two phases. In phase I, three types of steel fibre (SF) differing only in shape were examined. Then, eight mixes were formulated, considering a range of SF volume ratios from 0.125% to 1.5%, using both normal and the Equivalent Mortar Volume (EMV) mix design methods. In phase II, a reference mix and two recycled aggregate concrete mixes were developed, one designed with normal method and the other with the EMV technique and incorporating their associated optimum SF content obtained in phase I. The results show that the mechanical properties of SFRC proportioned with the EMV approach is not adversely affected and that water absorption capacity of the concrete is improved with this method compared to the traditional method. Also, mix design method adopted for recycled concrete affects the optimum SF volume ratio.

KW - Mix design

KW - Optimization

KW - Precast waste

KW - Recycled aggregate concrete

KW - Steel fibre

UR - http://www.scopus.com/inward/record.url?scp=85087217320&partnerID=8YFLogxK

U2 - 10.1016/j.istruc.2020.05.038

DO - 10.1016/j.istruc.2020.05.038

M3 - Article

SN - 2352-0124

VL - 27

SP - 664

EP - 672

JO - Structures

JF - Structures

M1 - STRUCTURES-D-19-00876R1

ER -

Effect of mix design methods on the mechanical properties of steel fibre-reinforced concrete prepared with recycled aggregates from precast waste

Abstract

Bibliographical note

Funder

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this