The current maintenance practice is to provide the rehabilitation strategies based on subjective judgment and The rutting, cracking and potholes etc are quite common. Increasing loads, intensity of traffic, high tyre pressure etc. Bituminous pavements are showing early sign of distresses worldwide, due to Distresses like Cracking, Rutting, potholes etc are theÄ«asic indicators of pavement condition. The pavement occurs at the limiting stage of serviceability level. The process of accumulation of damage is called deterioration and the failure of Pavement performance evaluation includes both Strategy, evaluation of pavement performance is very necessary. Pavements are one of the most important part of any transportation system. KeywordsÄeterioration Model, Distress Progression, Economic Analysis, HDM-4, Ultra-Thin Whitetopping. It also improves the functional efficiency of the pavement. Ultra-Thin Whitetopping has the minimum rate of roughness progression which in turn may lead to very low Road User Cost values thus providing 46% increase in the Net Economic Benefits than that of Ordinary Bitumen overlay. From the deterioration summary it is identified that even after 15 years, the riding quality of Ultra-Thin Whitetopping is the excellent and the most desirable one without any intervention.
It consist of a thin layer of high strength, fibre- reinforced concrete placed over a clean, milled surface of distressed bituminous concrete pavement, to achieve full or partial bonding. Ultra-Thin Whitetopping may be defined as a concrete overlay 50mm to 100mm thick, with closely spaced joints and bonded to an existing bituminous pavement. The concept of Ultra-Thin Whitetopping has not yet introduced in Kerala. Economic analyses of different overlay options were evaluated using HDM-4. The study area selected was Seaport-Airport Road (SPAP Road), a two-lane, 11.47km long road running between HMT Kalamasseri and Cohin Refineries Ltd. Highway Development and Management tool, HDM-4 software, developed by the World Bank for global applications is utilized for identifying an optimum maintenance strategy for highway pavements. Maintenance and repair of the highway pavements accounts to major expenses in the state budget.