In a developing country like India, where energy savings, conservation and optimum use of pavement materials are an important issue, especially for petroleum and mineral products. There is a need for immediate attention towards the implementation of sustainable and environment friendly pavement construction technologies. Application of such technologies will lead to the efficient use of existing and waste materials without creating problems to the environment and at the same time achieving the required pavement quality and performance. This paper presents the feasibility of producing high quality cold recycled asphalt using foam bitumen for heavily trafficked national highway of India. In this paper two case studies are presented where cold in place recycling technique was used for rehabilitation of distressed pavements. Foam bitumen stabilization was used to rehabilitate the existing base layers of pavements incorporating thick asphalt layers, resulting in higher percentages of reclaimed asphalt pavement (RAP) in the mix. Energy conservation and reduction in GHG emissions were also monitored during the construction phase. The data collected from the site was analyzed through CHANGER software to calculate the material savings and reduction in GHG emissions. By using foam stabilized technique, 80% of recycled aggregate was used and about 60% less bitumen was used for construction of pavement. The knowledge gained from this research is intended to improve current mix design and structural design practices and to develop data base for adopting sustainable pavement construction technologies in India.                                             

Application of Cold In-place Recycled Mixes for Rehabilitation of National Highways in India: Case Study

Welcome to the International Airfield and Highway Pavements Conference of the Transportation & Development Institute (T&DI) of ASCE. This international conference will provide an unrivaled chance to interact and exchange information with worldwide leaders in the fields of highway and airport pavements, as well as airport safety technologies.

This conference will bring together designers, project/construction managers, academics, and contractors from around the world to discuss the state-of-the-art implementation, construction, design, in airfield and highway pavements.