IS:15462-2019: A Tactical Shift Towards Performance Grading of Modified Bitumen
Gajendra Kumar, Senior Technical Officer, Pavement Evaluation Division, CSIR-CRRI, New Delhi
Sunil Bose, Chief Scientist (Retd.), CSIR-CRRI, New Delhi
Flexible pavements are the most common type of pavement systems in the country. In addition to being convenient to construct, they are also cost-effective and easy to maintain. These pavements constitute the surface course and binder course and are made up of bitumen and mineral aggregates. Bitumen is the main binder which binds the aggregates together to act as a structural layer. It is very important to control the properties of bitumen as the performance of the constructed pavement is based on the properties of the bitumen used and subjected to different loading and climatic conditions.