Abstract
The empirical method, a method developed from experiments or experience, has historically been the usual planning method used in Indonesia for designing flexible pavement thickness. The newest pavement design manual in Indonesia, Bina Marga 04/SE/Db/2017 has introduced the mechanistic method, based on pavement responses such as strain, deflection, and stress. Research was conducted to evaluate the design chart in the manual with KENPAVE program assistance in order to know the mechanistic response for the cement-treated base (CTB) foundation. The loadings for 100%, 150%, and 200% are used to know pavement response to loading variations. Vertical and horizontal strain were reviewed as mechanistic responses. Vertical strain was used to analyse rutting, and horizontal strain was used to analyse fatigue. The research shows that as the California Bearing Ratio (CBR) value increases, the smaller the vertical strain value becomes. However, this was not the case with horizontal strain where the CBR value did not seem to influence the horizontal strain value. The added loading will increase pressure on the pavement so that compressive and tensile strains on the pavement will be higher.
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