Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki

Environmental factors are one of the reasons for structural deterioration. Deteriorated structures are required to be strengthened and rehabilitated so that it can continue to stand strong throughout its service life. This study focuses on determining the flexural performance of RC beams longitudina...

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Main Author:	Suki, Nauwal
Format:	Book Section
Language:	English
Published:	Institute of Graduate Studies, UiTM 2018
Subjects:	Climatology and weather
Online Access:	http://ir.uitm.edu.my/id/eprint/22232/ http://ir.uitm.edu.my/id/eprint/22232/1/ABS_NAUWAL%20SUKI%20TDRA%20VOL%2014%20IGS%2018.pdf

id	uitm-22232
recordtype	eprints
spelling	uitm-222322018-11-19T04:55:14Z http://ir.uitm.edu.my/id/eprint/22232/ Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki Suki, Nauwal Climatology and weather Environmental factors are one of the reasons for structural deterioration. Deteriorated structures are required to be strengthened and rehabilitated so that it can continue to stand strong throughout its service life. This study focuses on determining the flexural performance of RC beams longitudinally strengthened with CFRP plate using Near Surface Mounted (NSM) method with the effect of tropical climate. Tropical climate parameters such as the air and moisture will recommence the carbonation process. Through carbonation process, the carbon dioxide will gradually penetrates the concrete surface and react with moisture and calcium hydroxide forming calcium carbonate that leads to steel corrosion and weaken the structure. The utilization of CFRP composite materials using NSM method is an alternative to strengthen the structures as it is rust proof and stronger in term of stiffness compared to steel. The flexural performance of RC beams was observed experimentally and analytically. Eleven beam specimens sized 125mm x 300mm x 1800mm (width; height; length) were constructed and placed in both room temperature surrounding and exposed to the tropical climate for 6 and 12 months. The beam were tested under four point static loading once the exposure time has lapsed and finite element model were then developed to validate the experimental works. The results suggested that the concrete, steel, CFRP plate and epoxy adhesive were significantly affected by the environmental agents as the strength continues to decrease over time. Surface roughness and discoloration were also observed on the materials' surfaces with the longer exposure have the most negative influence. Both experimental and computational modelling display an agreement where there is reduction in flexural strength recorded in the strengthened beams exposed to the tropical climate when comparisons were made to its counterparts which are placed indoor. The exposed strengthened beams however display an enhancement in flexural strength compared to the control beam without any strengthening proving that NSM method is able to strengthen the beams even with the effects of the tropical climate. P E Institute of Graduate Studies, UiTM 2018 Book Section PeerReviewed text en http://ir.uitm.edu.my/id/eprint/22232/1/ABS_NAUWAL%20SUKI%20TDRA%20VOL%2014%20IGS%2018.pdf Suki, Nauwal (2018) Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki. In: The Doctoral Research Abstracts. IPSis Biannual Publication, 14 (14). Institute of Graduate Studies, UiTM, Shah Alam.
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Climatology and weather
spellingShingle	Climatology and weather Suki, Nauwal Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki
description	Environmental factors are one of the reasons for structural deterioration. Deteriorated structures are required to be strengthened and rehabilitated so that it can continue to stand strong throughout its service life. This study focuses on determining the flexural performance of RC beams longitudinally strengthened with CFRP plate using Near Surface Mounted (NSM) method with the effect of tropical climate. Tropical climate parameters such as the air and moisture will recommence the carbonation process. Through carbonation process, the carbon dioxide will gradually penetrates the concrete surface and react with moisture and calcium hydroxide forming calcium carbonate that leads to steel corrosion and weaken the structure. The utilization of CFRP composite materials using NSM method is an alternative to strengthen the structures as it is rust proof and stronger in term of stiffness compared to steel. The flexural performance of RC beams was observed experimentally and analytically. Eleven beam specimens sized 125mm x 300mm x 1800mm (width; height; length) were constructed and placed in both room temperature surrounding and exposed to the tropical climate for 6 and 12 months. The beam were tested under four point static loading once the exposure time has lapsed and finite element model were then developed to validate the experimental works. The results suggested that the concrete, steel, CFRP plate and epoxy adhesive were significantly affected by the environmental agents as the strength continues to decrease over time. Surface roughness and discoloration were also observed on the materials' surfaces with the longer exposure have the most negative influence. Both experimental and computational modelling display an agreement where there is reduction in flexural strength recorded in the strengthened beams exposed to the tropical climate when comparisons were made to its counterparts which are placed indoor. The exposed strengthened beams however display an enhancement in flexural strength compared to the control beam without any strengthening proving that NSM method is able to strengthen the beams even with the effects of the tropical climate. P E
format	Book Section
author	Suki, Nauwal
author_facet	Suki, Nauwal
author_sort	Suki, Nauwal
title	Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki
title_short	Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki
title_full	Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki
title_fullStr	Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki
title_full_unstemmed	Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki
title_sort	flexural performance of rc beams with near surface mounted cfrp plate under tropical climate effects / nauwal hj. suki
publisher	Institute of Graduate Studies, UiTM
publishDate	2018
url	http://ir.uitm.edu.my/id/eprint/22232/ http://ir.uitm.edu.my/id/eprint/22232/1/ABS_NAUWAL%20SUKI%20TDRA%20VOL%2014%20IGS%2018.pdf
first_indexed	2023-09-18T23:08:13Z
last_indexed	2023-09-18T23:08:13Z
_version_	1777418626773549056

Flexural performance of RC beams with near surface mounted CFRP plate under tropical climate effects / Nauwal Hj. Suki

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