Wind farms are an important part of our transition to a low-carbon economy. But many of the concrete defences submerged to protect them contain plastics and are considered by environmental groups to be marine litter. This often needs to be removed, recycled or disposed of.
So one start-up has developed an alternative. ARC Marine’s reef cubes are made from recycled aggregate and sand that is a byproduct of the quarrying industry. The company says this reduces carbon emissions by 90% compared to the processes used to make common types of cement.
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