Enhancing bonding behavior between carbon fiber-reinforced polymer plates and concrete using carbon nanotube reinforced epoxy composites

Pitcha Jongvivatsakul; Chanachai Thongchom; Amaras Mathuros; Tosporn Prasertsri; Musa Adamu; Shanya Orasutthikul; Akhrawat Lenwari; Tawatchai Charainpanitkul

Case Studies in Construction Materials (Dec 2022)

Enhancing bonding behavior between carbon fiber-reinforced polymer plates and concrete using carbon nanotube reinforced epoxy composites

Pitcha Jongvivatsakul,
Chanachai Thongchom,
Amaras Mathuros,
Tosporn Prasertsri,
Musa Adamu,
Shanya Orasutthikul,
Akhrawat Lenwari,
Tawatchai Charainpanitkul

Affiliations

Pitcha Jongvivatsakul: Center of Excellence in Innovative Construction Materials, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
Chanachai Thongchom: Department of Civil Engineering, Thammasat School of Engineering, Thammasat University, Pathumtani 12120, Thailand
Amaras Mathuros: Department of Civil Engineering, Faculty of Engineering, Bangkokthonburi University, Bangkok 10170, Thailand
Tosporn Prasertsri: Department of Civil Engineering, Faculty of Engineering and Architecture, Rajamangala University of Technology Tawan-ok, Bangkok 10330, Thailand
Musa Adamu: Department of Civil Engineering, Faculty of Engineering, Bayero University, Kano, P.M.B 3011, Kano State, Nigeria; Engineering Management Department, College of Engineering, Prince Sultan University, 11586 Riyadh, Saudi Arabia
Shanya Orasutthikul: Department of Architecture, Faculty of Architecture, Chulalongkorn University, Bangkok 10330, Thailand; Corresponding author.
Akhrawat Lenwari: Composite Structures Research Unit, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
Tawatchai Charainpanitkul: Center of Excellence in Particle and Material Processing Technology, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand; Research Network of NANOTEC-KU on Nanocatalyst and Nanomaterials for Sustainable Energy and Environment, Bangkok 10900, Thailand

Journal volume & issue: Vol. 17
p. e01407

Abstract

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Externally bonded carbon fiber reinforced polymer (CFRP) composites have been widely used as repairing or strengthening materials for deteriorated reinforced concrete (RC) structures. This study discusses whether carbon nanotube (CNT) can be used as an additive to enhance bonding strength between concrete and CFRP. In this study, two CNT types: single walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs), were mixed with two different types of epoxies. CNTs were added at 0.25%, 0.5%, and 1.00% by weight of epoxy to obtain the optimal performance. Single-shear test were conducted to investigate bonding behavior including bond strength, ultimate slip, effective bond length, bond stress-slip relationship, interfacial fracture energy, and crack formation between CFRP plate and concrete. The results showed that epoxy modified by 0.5% SWCNTs and 1.0% MWCNTs by weight of epoxy enhance the ultimate load and slip, bond strength, and interfacial fracture energy when compared to plain epoxy. However, high density epoxy modified with SWCNTs/MWCNTs showed diminished bonding properties.

Published in Case Studies in Construction Materials

ISSN: 2214-5095 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/case-studies-in-construction-materials

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