Construction News

Fri October 15 2021

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LafargeHolcim targets ecological protection of offshore turbines

2 days LafargeHolcim’s US business has joined forces with ECOncrete Tech to develop an ecologically beneficial concrete scour-protection unit for the foundations of offshore wind turbines.

The Biden Administration has set the goal of creating 30GW of offshore wind by 2030. The team claims that the scour protection developed by its partnership would be the first, and currently only, structural solution to address the ecological impacts of offshore wind turbines on the marine environment, enabling a more sustainable industry and healthier oceans.

Offshore wind turbines require massive concrete foundations to anchor them in place. Hydrodynamic forces can create large holes around foundations, necessitating scour protection. Scour protection units are designed to protect sediments from being swept away by currents, and are often installed in a mound to protect the turbines' foundations. This kind of concrete infrastructure has a large impact on sensitive seabed, ecosystems.

The goal will be to design and manufacture a fully-structural concrete scour protection unit that facilitates the growth of marine organisms, while meeting all industry standards for stabilising the seabed. The R&D collaboration includes a large-scale pilot project to evaluate the ecological performance of the units in an offshore environment before implementation in full-scale installations.

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Scouring around a wind turbine base
Scouring around a wind turbine base

“Offshore energy production is a rapidly growing market worldwide, and while there are certainly benefits of using renewable energy, there is also an impact of these giant structures on the sensitive underwater ecosystems,” said Dr Ido Sella, CEO and co-founder at ECOncrete Tech. "We view our collaboration with LafargeHolcim in the US as key to minimising this impact.”

“For LafargeHolcim in the US, we recognise that there are many paths to achieving our net zero commitment, and most require innovative partnerships and out-of-the-box thinking,” said Josep Maset, VP for commercial excellence at LafargeHolcim in the US. “The work we're doing with ECOncrete Tech is a notable example of searching for solutions that enable increased use of renewable energy in an environmentally responsible way.”

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