Reinforcement corrosion is a critical issue affecting structural integrity and service life of existing reinforced concrete (RC) structures. While acoustic emission (AE) monitoring provides early damage detection and localization, its application during slow natural corrosion processes and in noisy outdoor environments remains challenging. This study investigates the feasibility of periodic AE monitoring during natural chloride-induced corrosion of two pre-damaged RC beams stored outdoors. Two AE sensor types were evaluated under realistic environmental influences. A dedicated filtering approach was developed to distinguish damage-related AE signals from environmental noise. The results demonstrate that periodic AE monitoring can effectively track damage evolution and localize corrosion hotspots in both one dimensional and two dimensional. Furthermore, a previously developed methodology for estimating accelerated corrosion levels based on AE localization was successfully applied to natural corrosion, confirming its broader applicability. These findings highlight the potential of the AE technique for structural health monitoring of RC structures under field conditions.
VidalTCastelAFrancoisR. Corrosion process and structural performance of a 17 year old reinforced concrete beam stored in chloride environment. Cem Concr Res2007; 37(11): 1551–1561. https://doi.org/10.1016/j.cemconres.2007.08.004
2.
GuoH-YJiangCGuX-L, et al. Time-dependent reliability analysis of reinforced concrete beams considering marine environmental actions. Eng Struct2023; 288: 116252. https://doi.org/10.1016/j.engstruct.2023.116252
YuyamaSYokoyamaKNiitaniK, et al. Detection and evaluation of failures in high-strength tendon prestressed concrete bridges by acoustic emission. Constr Build Mater2007; 21: 491–500. https://doi.org/10.1016/j.conbuildmat.2006.04.010
Deutsche Gesellschaft für Zerstörungsfreie Prüfung (DGZfP). DGZfP-SE 05:2024-05: Detektion von Spanndrahtbrüchen mit Schallemissionsanalyse. DGZfP, 2024, p. 33.
8.
PirskawetzSMSchmidtS. Detection of wire breaks in prestressed concrete bridges by acoustic emission analysis. Develop Built Environ2023; 14: 100151. https://doi.org/10.1016/j.dibe.2023.100151
9.
VerstryngeEVan SteenCVandecruysE, et al. Steel corrosion damage monitoring in reinforced concrete structures with the acoustic emission technique: a review. Constr Build Mater2022; 349: 128732. https://doi.org/10.1016/j.conbuildmat.2022.128732
10.
KawasakiYKobaraiTOhtsuM. Kinematics of corrosion damage monitored by acoustic emission techniques and based on a phenomenological model. J Adv Concr Technol2012; 10: 160–169. https://doi.org/10.3151/jact.10.160
11.
OhtsuMMoriKKawasakiY. Corrosion process and mechanisms of corrosion-induced cracks in reinforced concrete identified by AE analysis. Strain2011; 47(2): 179–186. https://doi.org/10.1111/j.1475-1305.2010.00754.x
12.
YuA-PNaqviMWHuL-B, et al. An experimental study of corrosion damage distribution of steel bars in reinforced concrete using acoustic emission technique. Constr Build Mater2020; 254: 119256. https://doi.org/10.1016/j.conbuildmat.2020.119256
13.
MangualJElBatanounyMKZiehlP, et al. Acoustic-emission-based characterization of corrosion damage in cracked concrete with prestressing strand. ACI Mater J2013; 110(1): 89–98.
14.
Van SteenCNasserHVerstryngeE, et al. Acoustic emission source characterisation of chloride-induced corrosion damage in reinforced concrete. Struct Health Monit2022; 21(3): 1266–1286. https://doi.org/10.1177/14759217211013324
15.
Van SteenCVerstryngeE. Signal-based acoustic emission clustering for differentiation of damage sources in corroding reinforced concrete beams. Appl Sci2022; 12(4): 2154. https://doi.org/10.3390/app12042154
16.
AppallaAElBatanounyMKVelezW, et al. Assessing corrosion damage in posttensioned concrete structures using acoustic emission. J Mater Civ Eng2016; 28(2): 0415128. https://doi.org/10.1061/(ASCE)MT.1943-5533.0001389
VelezWMattaFZiehlP. Acoustic emission monitoring of early corrosion in prestressed concrete piles. Struct Control Health Monit2015; 22: 873–887. https://doi.org/10.1002/stc.1723
YuyamaSYokoyamaKNiitaniK, et al. Detection and evaluation of failures in high-strength tendon of prestressed concrete bridges by acoustic emission. Constr Build Mater2007; 21(3): 491–500. https://doi.org/10.1016/j.conbuildmat.2006.04.010
21.
GolaskiLGebskiROnoK. Diagnostics of reinforced concrete bridges by acoustic emission. J Acoust Emiss2002; 20: 83–98.
22.
LyonsRIngMAustinS. Influence of diurnal and seasonal temperature variations on the detection of corrosion in reinforced concrete by acoustic emission. Corros Sci2005; 47(2): 413–433. https://doi.org/10.1016/j.corsci.2004.06.010
23.
VandecruysEMartensCVan SteenC, et al. Corrosion level estimation in reinforced concrete beams by acoustic emission sensing and selective crack measurements. Struct Concr2024; 26(5): 5578–5595. https://doi.org/10.1002/suco.202400630
24.
European Committee for Standardization (CEN). EN 206: Concrete – specification, performance, production and conformity. CEN, 2013.
25.
European Committee for Standardization (CEN). EN 12390-3: Testing hardened concrete – part 3: compressive strength of test specimens. CEN, 2019.
26.
VandecruysEvan de VeldeMReyndersE, et al. Experimental study on acoustic emission sensing and vibration monitoring of corroding reinforced concrete beams. Eng Struct2023; 293: 116553. https://doi.org/10.1016/j.engstruct.2023.116553
27.
Van SteenCVerbekeBVerstryngeE. Preliminary results of acoustic emission monitoring of a corroded post-tensioned concrete bridge. In: Structural faults and repair 2022. ECS, 2022, p. 1–9.
28.
ASTM International. ASTM E976-15: Standard guide for determining reproducibility of acoustic emission sensor response. ASTM International, 2021.
29.
MartensCBotteWCaspeeleR, et al. Bayesian updating of relationships between crack width and corrosion level in reinforced concrete based on a large set of experimental data. Struct Concr2024; 26(5): 5743–5760. https://doi.org/10.1002/suco.202400581
30.
ASTM International. ASTM G1-03: Standard practice for preparing, cleaning, and evaluation corrosion test specimens. ASTM International, 2011.
KäthlerCBAngstUMEbellG, et al. Chloride-induced reinforcement corrosion in cracked concrete: the influence of time of wetness on corrosion propagation. Corros Eng Sci Technol2021; 56(1): 1–10. https://doi.org/10.1080/1478422X.2020.1789371
33.
OtsukiNMadlangbayanMSNishidaT, et al. Temperature dependency of chloride induced corrosion in concrete. J Adv Concr Technol2009; 7(1): 41–50. https://doi.org/10.3151/jact.7.41
34.
ZivicaVKrajciLBagelL, et al. Significance of the ambient temperature and the steel materials in the process of concrete reinforcement corrosion. Constr Build Mater1997; 11(2): 99–103. https://doi.org/10.1016/S0950-0618(97)00001-9
35.
BouteillerVCherrierJ-FL’HostisV, et al. Influence of humidity and temperature on the corrosion of reinforced prisms. Eur J Environ Civ Eng2012; 16(3–4): 471–480. https://doi.org/10.1080/19648189.2012.668004
36.
TakamineHWatabeKMiyataH, et al. Efficient damage inspection of deteriorated RC bridge deck with rain-induced elastic wave. Constr Build Mater2018; 162: 908–913. https://doi.org/10.1016/j.conbuildmat.2018.01.100
37.
AbdelrahmanMElBatanounyMRoseJR, et al. Signal processing techniques for filtering acoustic emission data in prestressed concrete. Res Nondestr Eval2019; 30(3): 127–148. https://doi.org/10.1080/09349847.2018.1426800
38.
Van SteenCVerstryngeE. Degradation monitoring in reinforced concrete with 3D localization of rebar corrosion and related concrete cracking. Appl Sci2021; 11(15): 6772. https://doi.org/10.3390/app11156772
39.
AkaikeH. Markovian representation of stochastic processes and its application to the analysis of autoregressive moving average processes. Ann Inst Stat Math1974; 26(1): 363–387. https://doi.org/10.1007/BF02479833
40.
CarpinteriALacidognaGManuelloA. Reliable onset time determination and source location of acoustic emissions in concrete structures. Cem Concr Compos2012; 34: 529–537. https://doi.org/10.1016/j.cemconcomp.2011.11.013
41.
DeresseNEVan SteenCSoeteJ, et al. Fracture mode analysis of cementitious mortars by simultaneous application of 4D-XCT and acoustic emission technique. Constr Build Mater2024; 419: 135486.
42.
ZhangFPahlavanLYangY. Evaluation of acoustic emission source localization accuracy in concrete structures. Struct Health Monit2020; 16(6): 2063–2074. https://doi.org/10.1177/1475921720915625
43.
GeM. Analysis of source location algorithms, part II: iterative methods. J Acoust Emiss2003; 21: 29–51.
44.
AndradeCCesettiAManciniiG, et al. Estimating corrosion attack in reinforced concrete by means of crack opening. Struct Concr2016; 4: 533–540. https://doi.org/10.1002/suco.201500114
45.
MartensCVandecruysEVan SteenC, et al. KUL-edCCRC: experimental datasets for concrete cracking due to reinforcement corrosion. KUL RDR, 2024.
