4.5. Development of excess pore water pressure in the subgrade
The development of excess pore water pressures for both unreinforced
and control pavement sections as measured at 127 mm
below the subgrade surface are presented in Fig. 7. It should be
pointed out that the start of loading was taken as the zero point for
deformation of subgrade layer was installed directly underneath
the center of the loading plate, the stress measurement at this
location was not available. However, from the figure, one can see
that the magnitude of vertical stress was increased away from the
plate in the reinforced test sections compared to the control section.
This may suggest that the load was redistributed to a wider