A method to detect uniformity of road base course based on impact imaging technology

Area of Science:

• Civil Engineering
• Geotechnical Engineering
• Non-destructive Testing

Background:

• Road base course damage is often concealed and difficult to detect using conventional methods.
• Accurate assessment of pavement integrity is crucial for effective road maintenance and safety.

Purpose of the Study:

• To systematically discuss and apply the impact imaging method for detecting road base course damage.
• To evaluate the effectiveness of grouting maintenance through non-destructive testing.

Main Methods:

• Detailed discussion on setting collection points, excitation modes, and data processing for impact imaging.
• Application of the impact imaging method for testing highway pavement bases before and after grouting maintenance.

Main Results:

• The impact imaging method proved to be simple and accurate for detecting road base course damage.
• Results were visualized in a two-dimensional image format, facilitating easy interpretation for road maintenance.
• The method successfully identified and located pavement base damages and assessed structural uniformity.

Conclusions:

• Impact imaging is a viable technique for identifying and locating pavement base damage.
• The method effectively evaluates the uniformity of pavement base structures.
• Impact imaging can assess the effectiveness of internal damage repairs, such as post-grouting maintenance.