Perpustakaan Digital ITB

In addition to traffic loading, flooding has a significant impact on pavement deterioration. If not promptly addressed, flooding can accelerate pavement deterioration, preventing the road from maintaining its intended level of service throughout its design life. Therefore, flood management should not only focus on evaluating pavement damage but should also include an appropriate maintenance program to preserve pavement performance, optimize the remaining service life, and minimize long term maintenance costs. This study employed the Integrated Road Management System (IRMS) V.3 to develop a road maintenance program based on the structural condition of the pavement. Pavement deflection data and Remaining Service Life (RSL) were used to determine maintenance recommendations using the Decision Tree specified in Bina Marga Guideline No. 07/P/BM/2021. To improve the reliability of the analysis, the RSL obtained from IRMS V.3 was compared with that calculated using the AASHTO 1993 method. In addition, the drainage system performance of floodaffected road sections was evaluated. The maintenance program was then developed under two budget scenarios and two scenarios for the timing of floodcause mitigation. The results indicate that the flooding was not caused by inadequate drainage system performance, as the existing drainage channels along the flood affected road sections were capable of conveying the design flood discharge. The structural evaluation showed that the Remaining Service Life (RSL) estimated using the IRMS V.3 method was more optimistic than that obtained using the AASHTO 1993 method due to differences in the calculation approach, including the use of temperature uncorrected pavement deflection and the exclusion of the subgrade resilient modulus (MR). The analysis of the flood affected road sections indicates that flooding has the potential to accelerate pavement deterioration. However, it cannot be identified as the dominant deterioration factor because accelerated deterioration was also observed in road sections that were not affected by flooding. Based on the maintenance program scenarios, implementing flood cause mitigation in the first year was identified as the most recommended strategy, as it resulted in better pavement performance, reflected by a lower International Roughness Index (IRI), and lower total maintenance costs at the end of the analysis period