A review of the application Acoustic Emission (AE) incorporating mechanical approach to monitor Reinforced concrete (RC) strengthened with Fiber Reinforced Polymer (FRP) properties under fracture

Global Congress on Construction, Material and Structural Engineering 2017

材料科学;土木建筑工程

Syed Mazlan, S.M.S.^1 ; Abdullah, S.R.^1 ; Shahidan, S.^1 ; Mohd Noor, S.R.^1

Jamilus Research Centre, Faculty of Civil and Environmental, Department of Structural and Material Engineering, Johor, Batu Pahat, Malaysia^1

关键词: Acoustic emission techniques;    Concrete durability;    Damage characterization;    Fiber reinforced polymers;    Four point bending;    Intensity analysis;    Real time monitoring;    Three point bending;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/271/1/012086/pdf
DOI  :  10.1088/1757-899X/271/1/012086

来源: IOP

【 摘 要 】

Concrete durability may be affected by so many factors such as chemical attack and weathering action that reduce the performance and the service life of concrete structures. Low durability Reinforced concrete (RC) can be greatly improved by using Fiber Reinforce Polymer (FRP). FRP is a commonly used composite material for repairing and strengthening RC structures. A review on application of Acoustic Emission (AE) techniques of real time monitoring for various mechanical tests for RC strengthened with FRP involving four-point bending, three-point bending and cyclic loading was carried out and discussed in this paper. Correlations between each AE analyses namely b-value, sentry and intensity analysis on damage characterization also been critically reviewed. From the review, AE monitoring involving RC strengthened with FRP using b-value, sentry and intensity analysis are proven to be successful and efficient method in determining damage characterization. However, application of AE analysis using sentry analysis is still limited compared to b-value and intensity analysis in characterizing damages especially for RC strengthened with FRP specimen.