Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Non-destructive Tests for Concrete Strength01:12

Non-destructive Tests for Concrete Strength

221
The rebound hammer test, also known as the Schmidt hammer test, is a non-destructive technique for evaluating the hardness of concrete and, indirectly, the strength of concrete. It operates on the principle that the rebound of a spring-driven mass from a concrete surface correlates to the surface's hardness. The device comprises a mass within a tubular housing, a spring mechanism, and a plunger that strikes the concrete. Upon release, the energy imparted to the mass by the spring causes it...
221
Microcracking in Concrete01:20

Microcracking in Concrete

235
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
235
Dynamic Modulus of Elasticity of Concrete01:16

Dynamic Modulus of Elasticity of Concrete

598
The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by...
598
Corrosion of Reinforcement01:27

Corrosion of Reinforcement

293
The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
293
Line Protection with Impedance Relays01:27

Line Protection with Impedance Relays

152
Coordinating time-delay overcurrent relays in complex radial systems and directional overcurrent relays in multi-source transmission loops can be challenging. Impedance relays address these issues by responding to the voltage-to-current ratio, specifically measuring the apparent impedance of a line. These relays become more sensitive during faults as current increases and voltage decreases, thereby reducing the apparent impedance.
Under normal conditions, low load currents keep the measured...
152
Insulation Coordination01:23

Insulation Coordination

249
Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times...
249

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Directional Lighting-Based Deep Learning Models for Crack and Spalling Classification.

Journal of imaging·2025
Same author

Strain Monitoring of Concrete Using Carbon Black-Based Smart Coatings.

Materials (Basel, Switzerland)·2024
Same author

Threshold-Based BRISQUE-Assisted Deep Learning for Enhancing Crack Detection in Concrete Structures.

Journal of imaging·2023
Same author

Towards direct detection of tetracycline residues in milk with a gold nanostructured electrode.

PloS one·2023
Same author

Measuring for primary prevention: An online survey of local community perspectives on family and domestic violence in regional Australia.

PloS one·2023
Same author

Self-Sensing Rubber for Bridge Bearing Monitoring.

Sensors (Basel, Switzerland)·2023

Related Experiment Video

Updated: Oct 13, 2025

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
09:38

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Published on: November 7, 2016

8.9K

ConcrEITS: An Electrical Impedance Interrogator for Concrete Damage Detection Using Self-Sensing Repairs.

Jack McAlorum1, Marcus Perry1, Andrew C Ward1

  • 1Civil and Environmental Engineering, University of Strathclyde, Glasgow G1 1XJ, UK.

Sensors (Basel, Switzerland)
|November 13, 2021
PubMed
Summary
This summary is machine-generated.

This study introduces ConcrEITS, a low-cost system for detecting and locating cracks in concrete using self-sensing repair patches. This technology offers a promising, affordable solution for infrastructure monitoring and maintenance.

Keywords:
alkali-activated materialconcretecrack detection and locationdamagelow-cost tomographic impedance interrogatorrepairsensor

More Related Videos

Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
05:26

Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels

Published on: October 19, 2022

1.8K
Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures
10:00

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures

Published on: August 31, 2017

15.6K

Related Experiment Videos

Last Updated: Oct 13, 2025

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
09:38

Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets

Published on: November 7, 2016

8.9K
Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels
05:26

Determination of the Mechanical Properties of Flexible Connectors for Use in Insulated Concrete Wall Panels

Published on: October 19, 2022

1.8K
Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures
10:00

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures

Published on: August 31, 2017

15.6K

Area of Science:

  • Civil Engineering
  • Materials Science
  • Electrical Engineering

Background:

  • Continuous monitoring of concrete infrastructure is crucial for timely detection of damage and repair failures.
  • Alkali-activated materials offer potential for concrete repair and embedded sensing, but damage detection via self-sensing repairs remains undemonstrated.
  • Existing commercial interrogation solutions for damage detection are prohibitively expensive.

Purpose of the Study:

  • To design and demonstrate a low-cost tomographic impedance interrogator for crack detection in concrete using conductive repair patches.
  • To evaluate the accuracy and capability of the developed system compared to commercial devices.
  • To assess the system's effectiveness in locating cracks in concrete structures under stress.

Main Methods:

  • Development of a low-cost tomographic impedance interrogator named "ConcrEITS".
  • Validation of 4-probe impedance measurements against a commercial device using pure material blocks.
  • Tomographic reconstruction and crack location analysis on concrete beams with conductive repair patches undergoing 4-point bending.

Main Results:

  • ConcrEITS achieved a root mean square error of ±5.4% for 4-probe impedance measurements compared to a commercial device.
  • The system successfully detected and located cracks in conductive repair patches on concrete beams.
  • Tomographic reconstruction clearly identified crack locations in all six tested samples.

Conclusions:

  • The developed ConcrEITS system shows significant promise as a cost-effective solution for combined monitoring and maintenance of concrete infrastructure.
  • The technology demonstrates the feasibility of using self-sensing repair patches for damage detection.
  • Further up-scaled testing is recommended before field trials to validate the system's performance in real-world applications.