CSIR-CRRI demonstrates 60% reclaimed asphalt on NH-716
On 2 September 2026, CSIR-CRRI with OSEPL and Ooms India demonstrated the use of 60% Reclaimed Asphalt Pavement in the Dense Bituminous Macadam layer on NH-716 (Chennai–Tirupati).
Summary
CSIR-Central Road Research Institute (CRRI), Oriental Structural Engineers Private Limited (OSEPL) and Ooms Polymer Modified Bitumen (Ooms India) demonstrated the use of 60% Reclaimed Asphalt Pavement (RAP) in the Dense Bituminous Macadam (DBM) layer on National Highway-716, Chennai–Tirupati Package-I, on 2 September 2026. The field demonstration covered the full high-RAP process, from recovery and rejuvenation to mix design, hot-mix production, laying and compaction. Higher RAP use cuts the need for virgin aggregates and bitumen, supporting circular road construction.
Key facts
- Partners
- CSIR-CRRI, OSEPL, Ooms India
- Technology
- 60% Reclaimed Asphalt Pavement (RAP)
- Layer
- Dense Bituminous Macadam (DBM)
- Site
- NH-716, Chennai–Tirupati Package-I
- Benefit
- Less virgin aggregate and bitumen; circular construction
Practice MCQs 2 questions
In the CSIR-CRRI field demonstration on NH-716 in September 2026, 60% Reclaimed Asphalt Pavement was used in which pavement layer?
Show answer
Correct answer: D — Dense Bituminous Macadam
60% RAP was used in the Dense Bituminous Macadam (DBM) layer on NH-716, Chennai–Tirupati Package-I.
The 60% RAP demonstration by CSIR-CRRI in September 2026 was carried out on which highway stretch?
Show answer
Correct answer: A — NH-716, Chennai–Tirupati Package-I
The demonstration was on NH-716, Chennai–Tirupati Package-I.