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Smart RFID Sensors Embedded in Building Structures for Early Damage Detection and Long-Term Monitoring.

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Summary
This summary is machine-generated.

This study demonstrates that embedded passive radio frequency identification (RFID)-based sensors effectively monitor moisture in reinforced concrete. These sensors offer a reliable, long-term solution for structural health monitoring in civil engineering applications.

Keywords:
RFID based sensorscorresponding relative humiditycorrosion, civil engineeringembedded sensorsporous building materialsreinforced concrete

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Area of Science:

  • Civil Engineering
  • Materials Science
  • Sensor Technology

Background:

  • Reinforced concrete structures are susceptible to degradation, often linked to moisture content.
  • Effective structural health monitoring requires accurate, long-term moisture assessment.

Purpose of the Study:

  • To evaluate passive radio frequency identification (RFID)-based sensors for embedded moisture monitoring in reinforced concrete.
  • To assess the long-term performance and suitability of these sensors for structural health monitoring.

Main Methods:

  • Embedding passive RFID-based humidity sensors within concrete specimens.
  • Optimizing sensor casing and membrane materials for alkaline concrete environments (pH > 12).
  • Monitoring cement hydration (170 days) and long-term moisture (over 1000 days) using the embedded sensors.

Main Results:

  • Passive RFID sensors demonstrated suitability for long-term operation in harsh, alkaline concrete environments.
  • Successful monitoring of cement hydration and extended periods of moisture levels was achieved.
  • The energy supply and data transfer via RFID proved effective for embedded sensors.

Conclusions:

  • Embedded passive RFID-based sensors are highly suitable for long-term structural health monitoring in civil engineering.
  • The developed sensor system provides a robust solution for continuous moisture assessment in concrete structures.