4.2. Pavement surface deformation
Fig. 3 illustrates the development of rut depth (permanent
deformation) with number of ESALs for the six pavement test
sections. The surface permanent deformation was calculated by
averaging the readings of two LVDTs rest on top of the loading plate.
The results show that the surface permanent deformation accumulated
with the number of EASLs; sections constructed with
geosynthetics experienced less rut depth as compared to the control
section; and more reduction in the pavement surface deformation
was observed for the double layer reinforcement section
(section 2). Sections 3 and 5 can sustain 3,367,399 and 3,439,960
ESALs at a rut depth of 25.4 mm, which result on adjusted traffic