MAINTENANCE PROGRAM ANALYSIS OF FLEXIBLE PAVEMENT BASED ON STRUCTURAL CONDITION AND DISTRICT DRAINAGE CONDITION USING AASHTO (1993) METHOD AND DEFLECTION BOWL

• Main Author: Haryana B, Ingrid
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/80675
• Institution: Institut Teknologi Bandung

Waters can infiltrate the pavement structure, which can accelerate damage, disrupt the bond between layers, and harm the structural condition of the pavement. Structural conditions can be evaluated by predicting the remaining service life (RSL) and determining the condition of each pavement layer. Road asset management in Indonesia has implemented the Indonesian Road Management System (IRMS) V.3 program to develop road treatment programs. However, functional conditions dominate 60% of the treatment determination. This study aims to determine treatment by analyzing the structural conditions based on the RSL value and pavement condition rating. Structural conditions were evaluated using the AASHTO (1993) and Deflection Bowl methods developed by Emile Horak. Structural conditions in the form of predicted RSL values are performed by comparing CESAL values based on traffic surveys with theoretical CESAL based on back calculation analysis of deflection data. The Deflection Bowl method is carried out by analyzing the deflection curvature parameters in each pavement layer. The analysis results indicate that the submerged pavement is in worse condition than the non-submerged pavement. This occurs because water interferes with the strength of the pavement system, resulting in faster road damage. Furthermore, the prediction of the RSL value based on the AASHTO (1993) method is related to the pavement condition of the deflection bowl method. The higher the RSL value, the better the pavement condition, and vice versa. The type of treatment obtained indicates that most pavement structural conditions are poor, and therefore heavy maintenance should be carried out on 59% of the total length of roads reviewed. The current method of road asset management in Indonesia suggests that heavy maintenance should be carried out on 25% of the total length of roads reviewed.