T-WiEYE: An early-age concrete strength development monitoring and miniaturized wireless impedance sensing system

Providakis, C. P.; Liarakos, Evangelos V.

doi:10.1016/j.proeng.2011.04.082

Cited by 26 publications

(21 citation statements)

References 1 publication

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“…Further, on-line monitoring of concrete compressive strength gain using PZTs has successfully been achieved [13][14][15][16][17]. PZT admittances were also utilized in finite element method analyses that have been carried out for the evaluation of yielding or corrosion damage in steel reinforcing bars [1,18,19], to localize cracking in concrete beams [20,21] and to detect debonding damages in RC beams retrofitted with CFRP laminates [22,23].…”

Section: Introductionmentioning

confidence: 99%

Experimental application of a wireless earthquake damage monitoring system (WiAMS) using PZT transducers in reinforced concrete beams

Chalioris

Providakis

Favvata

et al. 2015

WIT Transactions on the Built Environment

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An innovative portable wireless real time structural health monitoring system that can detect the earthquake damage and the structural integrity of reinforced concrete members in seismic-prone regions is experimentally evaluated. Damage detection is achieved by the use of piezoelectric transducers (actuators/sensors) and the implementation of an integration analytical approach based on the electromechanical impedance method. In this direction, piezoelectric lead zirconate titanate (PZT) transducers are bonded on the surface of the steel reinforcing bars of two large-scale reinforced concrete beams. Tested beams subjected to typical flexural monotonic and cyclic loadings and damage monitoring was performed at different loading levels, before and after yielding, using the developed system. Comparisons of the response signals acquired from the bonded piezoelectric patches for the healthy and the damaged states showed a clear gradation of the examined damage levels and provide cogent evidence that the monitoring system is sensitive from an early stage of the performed tests. The effectiveness of this structural health Wireless impedance or Admittance Monitoring System (WiAMS) to detect concrete cracking and steel yielding due to seismic excitations is also commented on. First results showed that the use of PZTs for detecting earthquake damages in reinforced concrete structures by employing the electromechanical impedance approach can be considered as a highly promising non-destructive structural health monitoring method.

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Section: Introductionmentioning

confidence: 99%

Experimental application of a wireless earthquake damage monitoring system (WiAMS) using PZT transducers in reinforced concrete beams

Chalioris

Providakis

Favvata

et al. 2015

WIT Transactions on the Built Environment

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show abstract

“…Over the years, studies have tried to implement indirect methods of evaluating the strength performance of concrete, developing sensor-based systems to monitor environmental conditions and identifying the parameters affecting concrete's performance [23,[26][27][28][29][30]. For example, temperature data can be collected while the concrete is forming by using temperature sensors and radio frequency identification (RFID) tags or resistance rigidity thermometers [31].…”

Section: Wireless Concrete Monitoring Systems and Formwork Removalmentioning

confidence: 99%

Extending BIM Interoperability for Real-Time Concrete Formwork Process Monitoring

et al. 2020

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The concrete formwork process is a critical component of construction project control because failing to gain the necessary concrete strength can lead to reworks and, consequently, project delays and cost overruns during the project’s execution. The goal of this study is to develop a novel method of monitoring the maturity of concrete and providing reduced formwork removal time with the strength ensured in real-time. This method addresses the wireless sensors and building information modeling (BIM) needed to help project management personnel monitor the concrete’s status and efficiently decide on the appropriate formwork removal timing. Previous studies have focused only on the monitoring of concrete’s status using sensor data or planning the formwork layout by integrating the BIM environment into the design process. This study contributes to extending BIM’s interoperability for monitoring concrete’s maturity in real-time during construction, as well as determining the formwork removal time for project control. A case study was conducted at a building construction project to validate the developed framework. It was concluded that BIM can interoperate with the data collected from sensors embedded in concrete, and that this system can reduce formwork removal time while retaining sufficient strength in the concrete, rather than adhering to the removal time given in building code standards.

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“…In the present study, the monitoring of concrete strength gaining is achieved by using an innovative PZT transducer, which had been termed firstly in as Wireless Teflon‐based integratEd monitoring sYstEm or rather T‐WiEYE, and its functionality has been previously presented in details in Providakis et al . .…”

Section: Impedance Telemetric Monitoring Systemmentioning

confidence: 99%

“…The mechanical reaction of host structure to this emitted wave is detected from PZT's feedback output electrical current. It has been showed that EMI monitoring techniques are utilizing high frequencies scanning ranges varying from 30 to 400 kHz to electrically excite the PZT impedance transducers bonded on the surface of the host structure by means of alternating electrical field source can monitor the changes in the mechanical impedance signatures of the tested structures . Because the monitoring structural component is only needed to be accessed once for the instrumentation of the PZT sensors/actuators, remote monitoring is made possible.…”

Section: Introductionmentioning

confidence: 99%

Web-based concrete strengthening monitoring using an innovative electromechanical impedance telemetric system and extreme values statistics

Providakis

Liarakos

2014

Struct. Control Health Monit.

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SUMMARY Any possible and reliable monitoring of early age concrete strengthening can be considered as an essential aspect for operations such as removal of frameworks, prestress, or cracking control. This paper presents the development of a portable and innovative telemetric electromechanical impedance monitoring system, to experimentally monitor concrete strength development procedure from the initial states of casting and hydration to the final stages of hardening 28 days after casting. The proposed system functionality is based on piezoelectric (lead zirconate titanate) sensor/actuator technology and exploits the interaction between voltage‐stimulated piezoelectric material and host concrete structure in a coupled lead zirconate titanate concrete electromechanical system. It is found that the proposed electromechanical impedance technique associated with decision boundaries based on extreme value statistics is very sensitive to the strength gain of concrete structures from their earliest stages. Copyright © 2014 John Wiley & Sons, Ltd.

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T-WiEYE: An early-age concrete strength development monitoring and miniaturized wireless impedance sensing system

Cited by 26 publications

References 1 publication

Experimental application of a wireless earthquake damage monitoring system (WiAMS) using PZT transducers in reinforced concrete beams

Experimental application of a wireless earthquake damage monitoring system (WiAMS) using PZT transducers in reinforced concrete beams

Extending BIM Interoperability for Real-Time Concrete Formwork Process Monitoring

Web-based concrete strengthening monitoring using an innovative electromechanical impedance telemetric system and extreme values statistics

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