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DRAMIX® Adopted by Société du Grand Paris/Eiffage in Paris for Green Subway Expansion

Implementation Date

August 2, 2020

By

Société du Grand Paris / Eiffage

City

Paris

story image

Description

The Société du Grand Paris (SGP) is overseeing the project that includes a 200 kilometres automatic subway system with 68 stations, set for completion by 2030, and key lines operational by 2024. In partnership with Bekaert, Eiffage is using the Dramix fibre-reinforced concrete solution for Line 16.1. This involves the production of structural concrete segments exclusively using steel fibre-reinforced concrete for the permanent lining of 12 kilometres of L16.1, marking the first such application for a passenger rail structure.

Impact & Result

Dramix high-performance steel fibre saves around 5,000 tonnes of steel and reduces CO2 emissions by 10,000 tonnes for 10 kilometres of tunnels compared to Rebars. This fibre-reinforced concrete requires only 40 kg of Dramix steel fibre per cubic metre.

The big companies that have acquired this expertise are now the ambassadors of fibre-reinforced concrete, and will inevitably be offering fibre-reinforced concrete on future projects. We now have certainties that we didn't have 3-4 years ago. This will set a precedent for future infrastructure projects.

Alex Moubé, Head of the Low-Carbon Mission at Société du Grand Paris.

Solution Spotlight

Dramix® steel fiber reinforced concrete offers a solution that is both effective, cost-efficient and environmentally conscious. By using steel fibers instead of traditional concrete reinforcement methods such as mesh or rebar, you can reduce the CO2 emissions by up to 35% for the construction of, for example, an automated warehouse, a production plant, tunnels, precast elements, etc. This is because steel fibers reinforce concrete homogeneously, requiring less material for the same level of performance. Additionally, advanced design optimization allows for the creation of thinner, yet durable concrete elements that use less concrete, steel, and water compared to traditional reinforcement methods.

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