Dwarka Expressway, Delhi - A Case-study showcasing the application of ACM

 The Dwarka Expressway is India's first elevated 8-lane urban expressway, and its construction presented a unique set of challenges, including limited space and the need for rapid execution.

  • Single-Pillar Flyover Design: A key innovation on this project is the construction of an 8.5-km long, 8-lane flyover on a single central pier. This was made possible by using a combination of high-strength steel girders and reinforced concrete, which allows for a wide deck to be supported by a slender central column. This design minimizes the land footprint and avoids the need for multiple piers, reducing the overall construction time and cost.

  • High-Performance Bituminous Mixes: The expressway's road surface is a blend of advanced materials. While specific details aren't always public, modern expressways in India are increasingly using polymer-modified bitumen (PMB) and other high-performance asphalt mixes. These materials improve the road's resistance to wear, fatigue, and rutting, extending its lifespan and reducing maintenance needs.

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