Figure 17.

(a) Optimal values of dosages of granite sand (${\mathrm{D}}_{\mathrm{GS}}$) for various values of reliability index against CBR strength failure (${\mathsf{\beta }}_{\mathrm{CBR}}$) for 28-day-cured treated clayey soils when ${\mathrm{D}}_{\mathrm{CLS}}$ = 0.5%; (b) optimal values of dosages of granite sand (${\mathrm{D}}_{\mathrm{GS}}$) for various values of reliability index against CBR strength failure (${\mathsf{\beta }}_{\mathrm{CBR}}$) for 28-day-cured treated clayey soils when ${\mathrm{D}}_{\mathrm{CLS}}$ = 1.0%; (c) optimal values of dosages of granite sand (${\mathrm{D}}_{\mathrm{GS}}$) for various values of reliability index against CBR strength failure (${\mathsf{\beta }}_{\mathrm{CBR}}$) for 28-day-cured treated clayey soils when ${\mathrm{D}}_{\mathrm{CLS}}$ = 1.5%; (d) optimal values of dosages of granite sand (${\mathrm{D}}_{\mathrm{GS}}$) for various values of reliability index against CBR strength failure (${\mathsf{\beta }}_{\mathrm{CBR}}$) for 28-day-cured treated clayey soils when ${\mathrm{D}}_{\mathrm{CLS}}$ = 2.0%.