Rejupave Technology

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Recently, the Border Roads Organisation (BRO) has utilised road construction technology i.e Rejupave technology to build high-altitude bituminous road sections at the Sela tunnel and LGG-Damteng-Yangste (LDY) road near the India-China border in Arunachal Pradesh.

About Rejupave Technology

  • It is developed by India’s oldest and premier road research organisation, CSIR-Central Road Research Institute (CSIR-CRRI).
  • It is beneficial in constructing high-altitude bituminous roads at low and sub-zero temperature conditions.
  • This technology brings down the production and rolling temperature of bituminous mixes by 30 degrees Celsius to 400 degrees Celsius with negligible heat loss in the bituminous mix during transit, despite long haulage time amid snowfall. 
  • This technology's asphalt modifier is a bio oil-based product, which significantly lowers the heating requirement of bituminous mixes besides preserving the bituminous mix temperature during transit.
  • Significance
    • Rejupave' asphalt modifier in cold climatic regions will have improved long-term durability and better resistance to thermal cracking under low-temperature conditions.
    • It also brings down the greenhouse gas emissions in the pristine eco-sensitive mountainous environment of Arunachal Pradesh.

Key facts about CSIR-Central Road Research Institute (CRRI)

  • It is a premier national laboratory established in 1952, a constituent of Council of Scientific and Industrial Research (CSIR).
  • The major R&D programmes of CRRI related to the research and development projects on design, construction and maintenance of roads and runways, traffic and transportation planning of mega and medium cities, management of roads in different terrains, improvement of marginal materials, utilization of industrial waste in road construction and landslide control etc.
  • The institute provides technical and consultancy services to various user organizations in India and abroad.
  • For capacity building of human resources in the area of highway Engineering to undertake and execute roads and runway projects.

Q1) What Is Bituminous Road?

Bituminous road, also known as asphalt road, is a type of road construction that involves the use of bitumen as a binding agent to hold together a mixture of aggregates. Bitumen is a sticky, black, and highly viscous liquid or semi-solid form of petroleum. When combined with various types of aggregates like sand, gravel, or crushed stone, it creates a durable and flexible surface suitable for road construction.

Source: Indigenous technology used in constructing roads near China border in Arunachal