A feasibility study on real-time evaluation of concrete surface crack repairing using embedded piezoceramic transducers

Feng, Qian; Cui, Jun; Wang, Qiuliang; Fan, Shuli; Kong, Qingzhao

doi:10.1016/j.measurement.2017.09.015

Cited by 25 publications

(19 citation statements)

References 34 publications

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“…Presently, epoxy is one of the commonly used adhesives in the anchored steel bar technology. In addition, the epoxy can repair concrete cracks to prevent or reduce further corrosion [20,21,22,23]. For the sake of achieving the bonding strength required for a project, it is necessary to mix the two different components of the epoxy in a certain proportion to produce a chemical reaction.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Epoxy-Grouted Bonding Strength Development between an Anchored Steel Bar and Concrete Using PZT-Enabled Active Sensing

Jiang

Hei

Feng

et al. 2019

Sensors

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Anchored steel bars have been widely used in retrofitting of existing concrete structures. The bonding strength between the anchored steel bar and the concrete is critical to the integrity of the strengthened concrete structure. This paper presents a method to monitor epoxy-grouted bonding strength development by using a piezoceramic-enabled active sensing technique. One concrete beam with an anchored steel bar was involved in the monitoring test, and two concrete beams with six anchored steel bars were used in the pull-out test. To enable the active sensing, a Lead Zirconate Titanate (PZT) patch was bonded to the surface of the exposed end, and piezoceramic smart aggregates were embedded in each concrete specimen. During the monitoring experiment, signals from PZT sensors and smart aggregates were acquired at intervals of 0, 20, 40, 60, 80, and 100 min. In addition, a pull-out test was performed on each of the remaining six anchored steel bars in the two concrete beams, while the signal was recorded in the test. Furthermore, a wavelet packet analysis was applied to analyze the received signal energies to investigate the bonding strength development between the concrete and the anchored steel bar during the epoxy solidification process. The test results demonstrate the effectiveness of the proposed method in monitoring the bonding strength development between the anchored steel bar and the concrete, using the PZT-enabled active sensing.

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Section: Introductionmentioning

confidence: 99%

Monitoring of Epoxy-Grouted Bonding Strength Development between an Anchored Steel Bar and Concrete Using PZT-Enabled Active Sensing

Jiang

Hei

Feng

et al. 2019

Sensors

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“…Chen et al [24] utilized the wavelet packet analysis to develop a damage index to detect the concrete aggregate segregation based on the multi-scale and multi-physical field coupling simulation. Feng et al [25] conducted the wavelet packet-based energy analysis to characterize the energy of the elastic waves. The experimental results show that the elastic wave energy has the potential to characterize the crack developing and repairing process in the concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Wang

Cao

2019

Sensors

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Cement-based components have been widely used in civil engineering structures. However, due to wearing and deterioration, the cement-based components may have brittle failure. To provide early warning and to support predictive reinforcement, the piezoelectric materials are embedded into the cement-based components to excite and receive elastic waves. By recognizing the abnormalities in the elastic waves, hidden damage can be identified in advance. However, few research has been published regarding the damage quantification. In this paper, the wavelet packet analysis is adopted to calculate the energy of the transmitted elastic waves based on the improved piezoelectric aggregates (IPAs). Due to the growth of the damage, less elastic waves can pass through the damage zone, decreasing the energy of the acquired signals. A set of cement beams with different crack depths at the mid-span is tested in both numerical and experimental ways. A damage quantification index, namely the wavelet packet-based energy index (WPEI), is developed. Both the numerical and experimental results demonstrate that the WPEI decreases with respect to the crack depth. Based on the regression analysis, a strong linear relationship has been observed between the WPEI and the crack depth. By referring to the linear relationship, the crack depth can be estimated by the WPEI with a good accuracy. The results demonstrated that the use of the IPAs and the WPEI can fulfill the real-time quantification of the crack depth in the cement beams.

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“…Piezoceramic sensors have been utilised heavily for SHM in the aircraft industry (Chang 2016;Shen et al, 2006), automobile (Martinotto et al, 2016 and manufacturing (Hossain et al, 2016) industries. Various studies have also assessed the suitability of piezoceramic elements in assessing structural health of concrete members (Feng et al, 2018;Xu et al, 2018a;Zhao et al, 2016). The economical and easy applicability of piezoceramic sensors make them a viable option for SHM of concrete members in reallife projects (Shen et al, 2006).…”

Section: Piezoceramic Sensorsmentioning

confidence: 99%

Real-time structural health monitoring for concrete beams: a cost-effective ‘Industry 4.0’ solution using piezo sensors

Ghosh

Edwards

Hosseini

et al. 2020

IJBPA

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PurposeThis research paper adopts the fundamental tenets of advanced technologies in industry 4.0 to monitor the structural health of concrete beam members using cost-effective non-destructive technologies. In so doing, the work illustrates how a coalescence of low-cost digital technologies can seamlessly integrate to solve practical construction problems.Design/methodology/approachA mixed philosophies epistemological design is adopted to implement the empirical quantitative analysis of “real-time” data collected via sensor-based technologies streamed through a Raspberry Pi and uploaded onto a cloud-based system. Data was analysed using a hybrid approach that combined both vibration-characteristic-based method and linear variable differential transducers (LVDT).FindingsThe research utilises a novel digital research approach for accurately detecting and recording the localisation of structural cracks in concrete beams. This non-destructive low-cost approach was shown to perform with a high degree of accuracy and precision, as verified by the LVDT measurements. This research is testament to the fact that as technological advancements progress at an exponential rate, the cost of implementation continues to reduce to produce higher-accuracy “mass-market” solutions for industry practitioners.Originality/valueAccurate structural health monitoring of concrete structures necessitates expensive equipment, complex signal processing and skilled operator. The concrete industry is in dire need of a simple but reliable technique that can reduce the testing time, cost and complexity of maintenance of structures. This was the first experiment of its kind that seeks to develop an unconventional approach to solve the maintenance problem associated with concrete structures. This study merges industry 4.0 digital technologies with a novel low-cost and automated hybrid analysis for real-time structural health monitoring of concrete beams by fusing several multidisciplinary approaches into one integral technological configuration.

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A feasibility study on real-time evaluation of concrete surface crack repairing using embedded piezoceramic transducers

Cited by 25 publications

References 34 publications

Monitoring of Epoxy-Grouted Bonding Strength Development between an Anchored Steel Bar and Concrete Using PZT-Enabled Active Sensing

Monitoring of Epoxy-Grouted Bonding Strength Development between an Anchored Steel Bar and Concrete Using PZT-Enabled Active Sensing

Damage Quantification with Embedded Piezoelectric Aggregates Based on Wavelet Packet Energy Analysis

Real-time structural health monitoring for concrete beams: a cost-effective ‘Industry 4.0’ solution using piezo sensors

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