Bio-Bitumen: India Leads in Commercial Production for Roads
Why in the news
India reached a world first in commercial bio-bitumen output for roads, supporting green infrastructure.
Key facts
- What: a plant-derived binder replacing part of petroleum bitumen.
- Feedstock: mainly farm residue, notably rice straw.
- Blend: 20-30% substitution is safe.
- Field trial: 100 metres on NH-40 (Jorabat-Shillong Expressway), Meghalaya.
Developers
- CSIR with its Central Road Research Institute (New Delhi) and Indian Institute of Petroleum (Dehradun).
Benefits
| Area | Gain |
|---|---|
| Quality | Checked for rutting, cracking, moisture damage, durability, rheology |
| Environment | Less stubble burning, lower carbon footprint |
| Economy | Cheaper construction, longer road life |
Exam angle
- Feedstock: rice straw; trial site: NH-40, Meghalaya.