Evaluation for RC specimen damaged from rebar corrosion by acoustic emission technique

Kawasaki, Yuma; Wasada, Shota; Okamoto, Takahisa; Izuno, Kazuyuki

doi:10.1016/j.conbuildmat.2014.05.074

Cited by 26 publications

(11 citation statements)

References 7 publications

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“…It is shown that as the corrosion level becomes higher (from Control to LC and HC beam specimens), there is a collective increase in AF and a decrease in RA value of the beam specimens. On the other hand, it also indicates the transition of the beam specimen dominating fracture behaviour, which shifts from tensile to shear as the damage stage increases (from damage Stage I to IV) in accordance to the classification method suggested previously[10,27,35]. RA value versus AF for (a) Control, (b) LC and (c) HC beam specimens4.2.2.…”

supporting

confidence: 85%

“…NDT methods are non-intrusive, highly repeatable and cost-effective in terms of the execution time and accessibility [7]. The AE technique has also been used to detect steel corrosion in RC structures [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…However, limited studies have been attempted to evaluate the fracture behavior of corroded RC structures using the AE technique. Kawasaki et al [10] have carried out the AE technique during a flexure test in RC beam specimens which were corroded by wet and dry cycles. The authors have applied the AE technique to evaluate the seismic capacity of corroded beam specimens.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring fracture of steel corroded reinforced concrete members under flexure by acoustic emission technique

Zaki

Chai

Behnia

et al. 2017

Construction and Building Materials

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Acoustic emission (AE) technique is used for monitoring and evaluating the influence of corrosion on the structural behaviour of steel reinforced concrete (RC) beams under three-point flexure test. In this study, steel corrosion was accelerated by electro-chemical method utilising a direct current (DC) power supply and 5% sodium chloride (NaCl) solution. The steel corrosion that was induced into beam specimens casting were estimated at 0%, 4.55% and 32.37%, respectively, according to mass loss of steel reinforcement. Based on observations during static load test, the damage developed in the specimens could be classified into four different stages, namely, micro-cracking, first visible cracks, cracks distribution, as well as damage localization and yielding. Analysis of the AE data reveals distinguishable trends for RA value and average frequency (AF) registered for different corrosion levels, respectively. Moreover, the index of damage (ID) derived from the AE energy parameters obtained during the first stage of damage was found to be useful as an indicator for evaluating the extent of corrosion damage of RC beam specimens at initial loadings. In addition, to provide a practical application of AE toward life span estimation of corroded beam specimen, a Weibull damage function was introduced to estimate the remaining flexural capacity of the beam specimens. Based on analysis as well, it is noted that tensile fracture became more dominant with an increase in corrosion level.

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supporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Monitoring fracture of steel corroded reinforced concrete members under flexure by acoustic emission technique

Zaki

Chai

Behnia

et al. 2017

Construction and Building Materials

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“…There is no doubt that the corrosion of reinforcement has considerable impacts on the degradation mechanism, deterioration process, and durability of RC structures. Although the previous research on compressive members [38,39] and the corrosion process in RC members [40][41][42] using the AE technique do exist, the use of AE technique in investigating the damage process of corroded RC columns is rarely documented.…”

Section: Introductionmentioning

confidence: 99%

Acoustic Emission Analysis of Corroded Reinforced Concrete Columns under Compressive Loading

Jin

et al. 2020

Sensors

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In this work, the failure process of non-corroded and corroded reinforced concrete (RC) columns under eccentric compressive loading is studied using the acoustic emission (AE) technique. The results show that reinforcement corrosion considerably affects the mechanical failure process of RC columns. The corrosion of reinforcement in RC columns leads to highly active AE signals at the initial stage of loading, in comparison to the non-corroded counterparts. Also, a continuous AE hit pattern with a higher number of cumulative hits is observed for corroded RC columns. The spatial distribution and evolution of AE events indicate that the reinforcement corrosion noticeably accelerates the initiation and propagation of cracking in the RC columns during compressive loading. The AE characteristics of corroded RC columns are in agreement with the macroscopic failure behaviors observed during the damage and failure process. A damage evolution model of corroded RC columns based on the AE parameters is proposed.

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“…Behnia et al 13 comprehensively reviewed the application of AE technique for the SHM and condition assessment of concrete structures, especially concentrated on the AE parameters that used to describe damage evolution. Kawasaki et al 14 used the AE technique to study the development of fractures in reinforced concrete members due to reinforcement corrosion. Gallego et al 15 investigated the steel-to-concrete bond phenomenon with the aid of AE under the pullout tests.…”

Section: Introductionmentioning

confidence: 99%

Acoustic emission monitoring and finite element analysis of debonding in fiber-reinforced polymer rebar reinforced concrete

Patil

et al. 2016

Structural Health Monitoring

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The acoustic emission technique is widely used for mechanical diagnostics and damage characterization in reinforced concrete structures. This article experimentally investigated the feasibility of debonding characterization in fiber-reinforced polymer rebar reinforced concrete using acoustic emission technique. To this end, carbon-fiber-reinforced polymer rebar reinforced concrete specimens were prepared and they were subjected to pullout tests to study the interfacial debonding between concrete and reinforcement. Test results showed that the debonding failure between concrete and reinforcement was characterized by the total peeling off of the helical wrapping layer of the carbon-fiber-reinforced polymer reinforcement. The response of acoustic emission activity was analyzed by descriptive parameters, such as cumulative acoustic emission hits, amplitude, and peak frequency. The evolution of debonding failure is thus characterized by these acoustic emission parameters. The results demonstrated a clear correlation between the damage evolution of carbon-fiber-reinforced polymer rebar pullout and the acoustic emission parameters. In addition, finite element analysis was adopted to study the stress field during the pullout of the reinforcement. The simulation results agreed well with the experimental investigations.

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Evaluation for RC specimen damaged from rebar corrosion by acoustic emission technique

Cited by 26 publications

References 7 publications

Monitoring fracture of steel corroded reinforced concrete members under flexure by acoustic emission technique

Monitoring fracture of steel corroded reinforced concrete members under flexure by acoustic emission technique

Acoustic Emission Analysis of Corroded Reinforced Concrete Columns under Compressive Loading

Acoustic emission monitoring and finite element analysis of debonding in fiber-reinforced polymer rebar reinforced concrete

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