Special Projects/Specialized Maintenance
These initiatives involve both remedial and proactive maintenance strategies, encompassing tasks such as repairing bases, sealing cracks and patching pavement. The overarching objective of these interventions is to minimize recurring maintenance needs, uphold asset functionality and extend the pavement's lifespan.
Base repairs are performed on sections of the road where there is a failure of pavement structure. The failed area is excavated, strengthened by geogrid reinforcement, backfilled with suitable material and then capped with a new lift of asphalt.
Crack sealing serves as a proactive maintenance method to prevent moisture infiltration into the pavement elongating the asset's lifespan. This involves cutting the cracks to specified dimensions, thoroughly cleaning them and filling them with a specialized sealing material.
Patch paving is conducted in cases of widespread surface deterioration, where multiple patches in close proximity are needed, necessitating frequent maintenance. This procedure typically addresses areas with a minimum size of 3.5m x 30m. Roads undergo patch paving only if they are not slated for renewal within the next 5 years.