Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

Abstract

Performance degradation of existing RC structures due to aging and environmental effects made strengthening of RC structures a global issue. Bond between the substrate member and new strengthening layer is considered a threshold for any successful strengthening technique. This study explores the efficiency of using cementitious high strength connectors in preventing the debonding of TRM strengthening layer from strengthened RC beams. The experimental program includes two parts. In first part, the effect of strength, ratio, diameter and distribution of connectors, for smooth and rough surfaces, on the tensile bond strength are examined. The applicability of these connectors is investigated in second part by means of RC beams strengthened with TRM comprising four and eight textile basalt fibre layers. The results demonstrate that the inclusion of cementitious connectors changed the failure mode from debonding failure to desired flexural failure. The proposed improvement exhibited increasing to cracking and ultimate load up to about 140% and 93%, respectively. However, a significant reduction in ductility of all strengthened beams was observed in comparing with the control specimen.
Original languageEnglish
Title of host publication2nd International Conference on Structural Safety Under Fire and Blast Loading
Place of PublicationLondon, UK.
Pages0-0
Number of pages1
Publication statusPublished - 12 Sep 2017
Event2nd International Conference on Structural Safety Under Fire and Blast Loading - London, UK, 10-12 September 2017
Duration: 12 Sep 2017 → …

Conference

Conference2nd International Conference on Structural Safety Under Fire and Blast Loading
Period12/09/17 → …

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Mortar
Reinforced concrete
Textiles
Debonding
Concrete construction
Basalt
Failure modes
Environmental impact
Ductility
Aging of materials
Degradation
Fibers
Substrates

Cite this

Rafiq, M., Lampropoulos, A., & Baiee, A. (2017). Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams. In 2nd International Conference on Structural Safety Under Fire and Blast Loading (pp. 0-0). London, UK..
Rafiq, Muhammad ; Lampropoulos, Andreas ; Baiee, Ameer. / Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams. 2nd International Conference on Structural Safety Under Fire and Blast Loading. London, UK., 2017. pp. 0-0
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title = "Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams",
abstract = "Performance degradation of existing RC structures due to aging and environmental effects made strengthening of RC structures a global issue. Bond between the substrate member and new strengthening layer is considered a threshold for any successful strengthening technique. This study explores the efficiency of using cementitious high strength connectors in preventing the debonding of TRM strengthening layer from strengthened RC beams. The experimental program includes two parts. In first part, the effect of strength, ratio, diameter and distribution of connectors, for smooth and rough surfaces, on the tensile bond strength are examined. The applicability of these connectors is investigated in second part by means of RC beams strengthened with TRM comprising four and eight textile basalt fibre layers. The results demonstrate that the inclusion of cementitious connectors changed the failure mode from debonding failure to desired flexural failure. The proposed improvement exhibited increasing to cracking and ultimate load up to about 140{\%} and 93{\%}, respectively. However, a significant reduction in ductility of all strengthened beams was observed in comparing with the control specimen.",
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Rafiq, M, Lampropoulos, A & Baiee, A 2017, Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams. in 2nd International Conference on Structural Safety Under Fire and Blast Loading. London, UK., pp. 0-0, 2nd International Conference on Structural Safety Under Fire and Blast Loading, 12/09/17.

Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams. / Rafiq, Muhammad; Lampropoulos, Andreas; Baiee, Ameer.

2nd International Conference on Structural Safety Under Fire and Blast Loading. London, UK., 2017. p. 0-0.

Research output: Chapter in Book/Conference proceeding with ISSN or ISBNConference contribution with ISSN or ISBNResearchpeer-review

TY - GEN

T1 - Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams

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AU - Lampropoulos, Andreas

AU - Baiee, Ameer

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Y1 - 2017/9/12

N2 - Performance degradation of existing RC structures due to aging and environmental effects made strengthening of RC structures a global issue. Bond between the substrate member and new strengthening layer is considered a threshold for any successful strengthening technique. This study explores the efficiency of using cementitious high strength connectors in preventing the debonding of TRM strengthening layer from strengthened RC beams. The experimental program includes two parts. In first part, the effect of strength, ratio, diameter and distribution of connectors, for smooth and rough surfaces, on the tensile bond strength are examined. The applicability of these connectors is investigated in second part by means of RC beams strengthened with TRM comprising four and eight textile basalt fibre layers. The results demonstrate that the inclusion of cementitious connectors changed the failure mode from debonding failure to desired flexural failure. The proposed improvement exhibited increasing to cracking and ultimate load up to about 140% and 93%, respectively. However, a significant reduction in ductility of all strengthened beams was observed in comparing with the control specimen.

AB - Performance degradation of existing RC structures due to aging and environmental effects made strengthening of RC structures a global issue. Bond between the substrate member and new strengthening layer is considered a threshold for any successful strengthening technique. This study explores the efficiency of using cementitious high strength connectors in preventing the debonding of TRM strengthening layer from strengthened RC beams. The experimental program includes two parts. In first part, the effect of strength, ratio, diameter and distribution of connectors, for smooth and rough surfaces, on the tensile bond strength are examined. The applicability of these connectors is investigated in second part by means of RC beams strengthened with TRM comprising four and eight textile basalt fibre layers. The results demonstrate that the inclusion of cementitious connectors changed the failure mode from debonding failure to desired flexural failure. The proposed improvement exhibited increasing to cracking and ultimate load up to about 140% and 93%, respectively. However, a significant reduction in ductility of all strengthened beams was observed in comparing with the control specimen.

M3 - Conference contribution with ISSN or ISBN

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EP - 0

BT - 2nd International Conference on Structural Safety Under Fire and Blast Loading

CY - London, UK.

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Rafiq M, Lampropoulos A, Baiee A. Innovative technique of textile reinforced mortar (TRM) for flexural strengthening of reinforced concrete (RC) beams. In 2nd International Conference on Structural Safety Under Fire and Blast Loading. London, UK. 2017. p. 0-0