Crack Detection in Frozen Soils Using Infrared Thermographic Camera

Area of Science:

• Geotechnical Engineering
• Thermography
• Material Science

Background:

• Frozen soils pose challenges in polar construction and artificial ground freezing (AFG) applications.
• Effective monitoring of frozen soil behavior and failure is essential for infrastructure safety.
• Traditional monitoring methods may be limited in scope and real-time applicability.

Purpose of the Study:

• To investigate the potential of thermographic technology for monitoring frozen soil failure.
• To correlate temperature increases with deformation and failure in different frozen soil types.
• To establish infrared thermography as a viable monitoring tool for frozen soils.

Main Methods:

• Conducted uniaxial compression tests on cylindrical specimens of clay, sand, and gravel frozen soils.
• Utilized infrared video cameras to record surface temperature profiles during compression.
• Analyzed thermographic data to identify temperature changes associated with deformation.

Main Results:

• Observed distinct temperature increases in all three frozen soil types (clay, sand, gravel) due to frictional heat.
• Confirmed that deformation-induced friction generates measurable thermal signatures.
• Demonstrated a clear link between temperature rise and the mechanical behavior leading to failure.

Conclusions:

• Temperature increases serve as a reliable indicator of potential frozen soil failure.
• Infrared thermography is an effective and applicable method for real-time monitoring of frozen soils.
• This non-destructive technique offers a promising solution for assessing the stability of frozen ground.