Larsen and Toubro

About Project

The Dibang Multipurpose Project is an under-construction 2,880 MW hydroelectric facility on the Dibang River in Arunachal Pradesh, India. Being developed by NHPC Limited, it will feature India’s highest concrete gravity dam (278 meters) and is designed to generate 11,223 million units of electricity annually, with completion expected by February 2032.

Key details of the project include:
  • Capacity & Design: 2,880 MW  installed capacity, featuring a 278-meter high concrete gravity dam.
  • Purpose: Primarily designed for power generation, flood moderation in the Brahmaputra basin, and water storage.
  • Location: Situated in the Lower Dibang Valley district of Arunachal Pradesh.
  • Development Status: The project is under construction, with key milestones like the completion of diversion tunnels achieved in early 2026.
  • Projected Completion: The target for commissioning is February 2032.
Lower Dibang Valley, Arunachal Pradesh
Expanded Polyethylene (AT)
Cost - $350 milion

Challenges

Harsh Terrain: The project’s location in the Lower Dibang Valley, known for its challenging mountainous terrain, required solutions that could withstand high stress, moisture, and environmental fluctuations.

Heavy Traffic Load: The construction of access roads and bridges demanded durable materials capable of handling the weight of large equipment and materials under extreme conditions.

Water and Moisture Resistance: Given the proximity to the Dibang River, the risk of water exposure was high, which required materials that were resistant to water absorption and could perform well in wet environments.

Our Solutions

Enhanced Durability and Resistance: The Expanded Polyethylene provided superior resistance to moisture, ensuring long-lasting performance even in the damp and high-humidity environment of the Dibang Valley.

Lightweight Yet Strong: The product’s lightweight nature made it easy to transport and install, while its strength ensured that it could support the heavy machinery and traffic load required for the construction of access roads and bridges.

Shock Absorption: The foam’s shock-absorbing properties were particularly beneficial in reducing vibrations from construction activities, which in turn helped to protect the infrastructure and extend its lifespan.

Thanks to the robust performance of Expanded Polyethylene (AT) from Maruti Techno Rubber, L&T was able to meet the project’s rigorous demands for durability, moisture resistance, and weight-bearing capacity. The material played a critical role in ensuring that the construction progressed smoothly despite the challenging environmental conditions.

Download the Waterproofing Membranes Brochure