Simplified Methodology for Optimal Maintenance Management of Highway Pavement Network: Fid-Bau Portal

Simplified Methodology for Optimal Maintenance Management of Highway Pavement Network

Archana, M. R. / Anjaneyappa, V. / Amarnath, M. S. / Veeraragavan, A.

The data pertaining to structural and functional performance for a highway pavement network of eight hundred and forty kilometres in the district of Ramanagara near Bengaluru, Karnataka, India, were collected. Falling weight deflectometer (FWD) and road measurement and data acquisition system (ROMDAS) have been utilized for determination of structural and functional adequacy. The road network is segmented into homogeneous sections based on cumulative difference approach (AASHTO, 1995). The strength co-efficient of layers in the pavement expressed as layer moduli were computed using FWD data is used to compute critical stresses and strains of road network and for estimation of maintenance and rehabilitation treatments. The condition of the homogeneous sections in the network is assessed based on the pavement condition index (PCI) on a scale of 0–100. The pavement performance model for PCI is developed using Markovian approach. Different choices of maintenance and rehabilitation treatments are considered to improve the performance of the pavement sections in the network. A simplified methodology for the optimal timing for the pavement maintenance and management is developed so that the pavement network reaches a steady state in five years. The paper presents the importance of survey and a comprehensive discussion on key issues related to pavement maintenance and rehabilitation optimization. This study can form a window of reference for local highway agencies to determine budgetary needs, scientific basis for funding allocations and treatment policy. This paper provides useful findings for highway agencies, for promoting consideration of effective maintenance and rehabilitation alternatives and their funding options.