>> reduces the need for concrete by about 30% Reduces the need for structural concrete by about 30%. Graphene makes the concrete stronger. That is important

>> reduces the need for concrete by about 30% Reduces the need for structural concrete by about 30%. Graphene makes the concrete stronger. That is important but not the entire purpose of concrete. Lots is used as space filler, liquid rock to seal against wind/rain/snow. Concrete is also used because it is heavy. Making it stronger won't reduce its use as a heavy anchor point for a structure. A giant wind turbine needs more than a strong base, but a literally massive one to prevent tipping over in strong winds. Graphene infused or not, that base still needs to weight the same.