University of Hertfordshire

Behavior of RC beams retrofitted with CARDIFRC after thermal cycling

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Behavior of RC beams retrofitted with CARDIFRC after thermal cycling. / Farhat, Farhat A.; Nicolaides, Demetris; Kanellopoulos, Antonios; Karihaloo, Bhushan Lal.

In: Journal of Materials in Civil Engineering, Vol. 22, No. 1, 009001QMT, 01.2010, p. 21-28.

Research output: Contribution to journalArticle

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Author

Farhat, Farhat A. ; Nicolaides, Demetris ; Kanellopoulos, Antonios ; Karihaloo, Bhushan Lal. / Behavior of RC beams retrofitted with CARDIFRC after thermal cycling. In: Journal of Materials in Civil Engineering. 2010 ; Vol. 22, No. 1. pp. 21-28.

Bibtex

@article{3eba90010c5340d1bff9e05257e168d5,
title = "Behavior of RC beams retrofitted with CARDIFRC after thermal cycling",
abstract = "This study investigates the effect of thermal cycling on the performance of concrete beams retrofitted with CARDIFRC, a new class of high performance fiber-reinforced cement-based material that is compatible with concrete. Twenty four beams were subjected to 24 h thermal cycles between 25 and 90°C. One third of the beams were reinforced either in flexure only or in flexure and shear with conventional steel reinforcement and used as control specimens. The remaining sixteen beams were retrofitted with CARDIFRC strips to provide external flexural and/or shear strengthening. All beams were exposed to a varied number of 24 h thermal cycles ranging from 0 to 90 and were tested in four-point bending at room temperature. The tests indicated that the retrofitted members were stronger and stiffer than control beams, and more importantly, that their failure initiated in flexure without any signs of interfacial delamination cracking. The results of these tests are presented and compared to analytical predictions. The predictions show good correlation with the experimental results.",
keywords = "Concrete structures, Constitutive models, Fracture, Mechanical properties, Rehabilitation, Temperature effects",
author = "Farhat, {Farhat A.} and Demetris Nicolaides and Antonios Kanellopoulos and Karihaloo, {Bhushan Lal}",
year = "2010",
month = "1",
doi = "10.1061/(ASCE)MT.1943-5533.0000008",
language = "English",
volume = "22",
pages = "21--28",
journal = "Journal of Materials in Civil Engineering",
issn = "0899-1561",
publisher = "American Society of Civil Engineers (ASCE)",
number = "1",

}

RIS

TY - JOUR

T1 - Behavior of RC beams retrofitted with CARDIFRC after thermal cycling

AU - Farhat, Farhat A.

AU - Nicolaides, Demetris

AU - Kanellopoulos, Antonios

AU - Karihaloo, Bhushan Lal

PY - 2010/1

Y1 - 2010/1

N2 - This study investigates the effect of thermal cycling on the performance of concrete beams retrofitted with CARDIFRC, a new class of high performance fiber-reinforced cement-based material that is compatible with concrete. Twenty four beams were subjected to 24 h thermal cycles between 25 and 90°C. One third of the beams were reinforced either in flexure only or in flexure and shear with conventional steel reinforcement and used as control specimens. The remaining sixteen beams were retrofitted with CARDIFRC strips to provide external flexural and/or shear strengthening. All beams were exposed to a varied number of 24 h thermal cycles ranging from 0 to 90 and were tested in four-point bending at room temperature. The tests indicated that the retrofitted members were stronger and stiffer than control beams, and more importantly, that their failure initiated in flexure without any signs of interfacial delamination cracking. The results of these tests are presented and compared to analytical predictions. The predictions show good correlation with the experimental results.

AB - This study investigates the effect of thermal cycling on the performance of concrete beams retrofitted with CARDIFRC, a new class of high performance fiber-reinforced cement-based material that is compatible with concrete. Twenty four beams were subjected to 24 h thermal cycles between 25 and 90°C. One third of the beams were reinforced either in flexure only or in flexure and shear with conventional steel reinforcement and used as control specimens. The remaining sixteen beams were retrofitted with CARDIFRC strips to provide external flexural and/or shear strengthening. All beams were exposed to a varied number of 24 h thermal cycles ranging from 0 to 90 and were tested in four-point bending at room temperature. The tests indicated that the retrofitted members were stronger and stiffer than control beams, and more importantly, that their failure initiated in flexure without any signs of interfacial delamination cracking. The results of these tests are presented and compared to analytical predictions. The predictions show good correlation with the experimental results.

KW - Concrete structures

KW - Constitutive models

KW - Fracture

KW - Mechanical properties

KW - Rehabilitation

KW - Temperature effects

UR - http://www.scopus.com/inward/record.url?scp=77950963312&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)MT.1943-5533.0000008

DO - 10.1061/(ASCE)MT.1943-5533.0000008

M3 - Article

AN - SCOPUS:77950963312

VL - 22

SP - 21

EP - 28

JO - Journal of Materials in Civil Engineering

JF - Journal of Materials in Civil Engineering

SN - 0899-1561

IS - 1

M1 - 009001QMT

ER -