CSIR’s Bio-Bitumen Technology Marks a Green Leap for India’s Road Infrastructure

India’s push towards sustainable infrastructure has received a major boost with the Council of Scientific and Industrial Research (CSIR) transferring its indigenous bio-bitumen technology for large-scale industrial adoption. The innovation is expected to reshape the country’s road construction sector by offering an eco-friendly alternative to conventional petroleum-based bitumen.

Developed jointly by CSIR–Central Road Research Institute (CRRI) and CSIR–Indian Institute of Petroleum (IIP), the technology uses agricultural residue and other lignocellulosic biomass through an advanced thermochemical conversion process. The result is bio-bitumen, a renewable material that can be used for the construction of durable and efficient tar roads.

This development comes at a crucial time when India is focusing on green infrastructure and low-carbon construction practices. By converting crop residue into valuable road-building material, the technology directly addresses two major challenges: stubble burning and dependence on imported petroleum products. Crop burning has long been a key contributor to air pollution in northern India, especially during winter months.

Officials said the new technology also creates an economic opportunity for farmers, as agricultural waste that was once discarded can now become a source of additional income. This links the agriculture sector with infrastructure development in a meaningful way, supporting the vision of Atmanirbhar Bharat and the circular economy.

The bio-bitumen has reportedly demonstrated performance comparable to traditional bitumen in terms of durability, bonding strength, and compatibility with existing road construction processes. This makes it suitable for adoption in national highways, urban roads, and other infrastructure projects under the Ministry of Road Transport and Highways.

Industry experts believe the transfer of this technology from laboratory research to commercial application marks a significant milestone for India’s infrastructure sector. With growing emphasis on sustainable construction materials, CSIR’s innovation is likely to accelerate the use of green technologies in future road projects across the country.