Incorporating Graphene into Concrete makes it Twice as Durable and Four Times More Resistant to Water - https://www.technology.org/2018/04/26/incorporating-graphene-into-concrete-makes-it-twice-as-durable-and-four-times-more-resistant-to-water/ https://www.technology.org/texorgwp/wp-content/uploads/2018/04/graphene-1.jpg