Corrosion Assessment of Pre-corrosion Concrete Specimens using Acoustic Emission Technique
Ahmad Zaki,Zainah Ibrahim +1 more
TL;DR: In this article, the authors used the acoustic emission (AE) technique for the assessment of pre-corroded concrete specimens, which are under load testing, and found that the majority of the beam specimens failed with shear cracks.
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Abstract: The acoustic emission (AE) technique is known as a non-destructive testing (NDT) method, which is effective for assessing corrosion in concrete structures. This study aims to utilize the AE technique, for the assessment of pre-corroded concrete specimens, which are under load testing. Experiments were carried out on small-scale pre-corroded specimens, which were subjected to monotonic loading. The results showed that the majority of the beam specimens failed with shear cracks. Three AE parameters, namely acoustic emission hits, as well as the RA and AF values, were also used, in order to assess the flexure behaviour of the pre-corroded beam specimens. These experiments helped to understand the flexural behaviour of pre-corroded specimens, which were under a loading test, via the use of the AE technique.
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Figures
Figure 5 Condition of steel reinforcements after accelerated corrosion test. 
Figure 10 Average RA and AF values versus load of the specimens. ![Figure 1 Acoustic emission technique [30,31].](/figures/figure1-1-60mu48rdkgdn.png)
Figure 1 Acoustic emission technique [30,31]. 
Figure 6 Load versus deflection of the beam specimens. 
Table 2 Quantitative results of accelerated corrosion process. 
Figure 9 Cumulative AE hits versus load level (%) of the specimens.
![Figure 1 Acoustic emission technique [30,31].](/figures/figure1-1-60mu48rdkgdn.webp)
Citations
Analysis of Acoustic Emission Energy from Reinforced Concrete Sewage Pipeline under Full-Scale Loading Test
TL;DR: In this paper , three-point loading experiments on full-size reinforced concrete pipes were carried out, and the damage state of the pipes was monitored by acoustic emission technology; the evolution trend of the mechanical properties and acoustic emission monitoring indexes under load was investigated.
The effect of different acceleration corrosion processes on flexural strength of oil palm shell concrete
TL;DR: In this paper , a 10% oil palm shell was employed to replace coarse aggregate in the concrete mixture to create a corrosive environment and accelerate the corrosion condition of 28-day-old concrete beam specimens.
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Evaluating Pre-Corrosion and Post-Corrosion of Oil Palm Shell Concrete with Non-Destructive Testing
TL;DR: In this article , the effect of corrosion levels on OPS concrete and mask fiber using the NDT (non-destructive testing) method was determined using impact-echo and resistivity analysis.
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Secondary AE Analysis of Pre-corroded Concrete Beam
19 Jul 2022
TL;DR: In this paper , acoustic emission technique of non-destructive testing (NDT) method is the more successful method of corrosion assessment of reinforced concrete (RC) structures for the evaluation of pre-corroded concrete beam specimens under load testing.
4
Corrosion Analysis on Reinforcing Steel in Concrete Using the Eddy Current Method
Aulia Chanief Rahita,Ahmad Zaki +1 more
- 09 Aug 2023
TL;DR: The eddy current testing (ECT) method is effective in detecting corrosion in steel bars used in reinforced concrete structures. Changes in impedance signals occur when the probe encounters defects/corrosion in the reinforcing steel bars. The higher the level of damage in the specimen, the higher the indication signal height due to changes in impedance.
2
References
Crack classification in concrete based on acoustic emission
Kentaro Ohno,Masayasu Ohtsu +1 more
TL;DR: In this article, two crack classification methods are compared and discussed from results of three types of concrete failure tests, and it is shown that the ratios of the shear crack which are identified by Green's functions for moment tensor analysis are good agreement with those by parameter analysis in the case that the proportion of the RA value and the average frequency is set to 1-200.
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CRC Handbook on Nondestructive Testing of Concrete
V. M. Malhotra,Nicholas J. Carino +1 more
- 20 Nov 1990
TL;DR: The Maturity Method as mentioned in this paper is a breakoff test method based on the Maturity Test Test Method (MTT) and the Pullout Test (PT) method (PT).
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Assessing Damage of Reinforced Concrete Beam using b -value Analysis of Acoustic Emission Signals
TL;DR: In this paper, a b-value analysis was carried out on data recorded during a laboratory test on a reinforced concrete beam designed as representative of a bridge beam, and the results showed a good agreement with the development of the fracture process of the concrete.
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Advanced structural health monitoring of concrete structures with the aid of acoustic emission
TL;DR: In this article, a comprehensive review of the acoustic emission (AE) technique for its applications in concrete structure health monitoring is presented, with highlights on the limitation of the individual parameter-based approaches when adopted on site.
369
Detection and evaluation of AE waves due to rock deformation
TL;DR: In this paper, a prospective method to install acoustic sensors into the rock slope (WEAD) is developed, based on the experimental results, the criteria for classifying fracture states are proposed, applying the criteria to the field data, fracture states estimated are compared with internal slope behavior evaluated from the displacement, borehole-strain, temperature and so forth.
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