Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/14489
Title: Effect of cracking, corrosion and repair on the frequency response of simply-supported reinforced concrete beams
Authors: CHHOA CHIA YEE
Keywords: engineered cementitious composites; fundamental frequency; cracking; accelerated corrosion; repair; carbon fiber reinforced polymer
Issue Date: 24-Jan-2005
Source: CHHOA CHIA YEE (2005-01-24). Effect of cracking, corrosion and repair on the frequency response of simply-supported reinforced concrete beams. ScholarBank@NUS Repository.
Abstract: Premature deterioration of reinforced concrete (RC) structures due to structural loading and corrosion represents significant problem worldwide. Consequently, various system identification (SI) techniques have been developed to monitor the health and detect damage in structures where natural frequency is often used as a diagnostic parameter. This study consists of a laboratory investigation to investigate the effect of cracking, corrosion and repair on the frequency response of two series of simply-supported RC beams, namely ordinary Portland cement concrete (OPC) and functionally-graded concrete (FGC) beams. Significant changes in the frequency ratio, Rf, of the beams were observed; with a decrease in Rf associated with load-induced cracking, an increase in Rf associated with moderate reinforcement corrosion and a subsequent decrease in Rf associated with repair. The experimental results revealed that the frequency response can be used to infer the state of the health of the monitored structure by taking into account environmental conditions, likelihood of corrosion occurrence, properties of repair material and interfacial bonding.
URI: http://scholarbank.nus.edu.sg/handle/10635/14489
Appears in Collections:Master's Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Cover to List of Tables.pdf104.68 kBAdobe PDF

OPEN

NoneView/Download
01Chap.pdf74.83 kBAdobe PDF

OPEN

NoneView/Download
02Chap.pdf534.73 kBAdobe PDF

OPEN

NoneView/Download
03Chap.pdf2.66 MBAdobe PDF

OPEN

NoneView/Download
04Chap.pdf4.74 MBAdobe PDF

OPEN

NoneView/Download
05Chap.pdf31.41 kBAdobe PDF

OPEN

NoneView/Download
References.pdf60.17 kBAdobe PDF

OPEN

NoneView/Download

Page view(s)

304
checked on Dec 11, 2017

Download(s)

1,148
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.