Figure 4. Measurement of rut depth in each layer byfield trenching

From

Determining the Contribution of Different Structural Layers of Asphalt Pavement System to Rutting Using Transverse Profile Analysis

Hussan S., Kamal M. A., Khan M. B., Irfan M., Hafeez I.

American Journal of Civil Engineering and Architecture. 2013, 1(6), 174-180 doi:10.12691/ajcea-1-6-7