ADDITIVES OF GRAPHENE NANOMATERIALS FOR THE IMPROVEMENT OF CEMENTITIOUS COMPOSITIONS, CEMENTITIOUS COMPOSITION, A PROCESS FOR PREPARING A REINFORCED CONCRETE, A REINFORCED CONCRETE AND ITS USE

摘要

An additive of graphene nanomaterials for the improvement of cementitious compositions, a cementitious composition, a process for preparing a concrete a concrete and use of the concrete. The additive includes a mixture of graphene nanofibers, graphene oxide (GO), a dispersing agent (D) and a superplasticizer (SP), comprising at least two graphene nanofibers, selected among graphene nanofibers of high specific surface area (GNF-HS), graphene nanofibers of low specific surface area (GNF-LS) or graphene nanofibers of long length (GNF-LL), wherein the graphene nanofibers have an average diameter comprised between 2 nm and 200 nm, and wherein said additive of graphene nanomaterials by having different proportions of the at least two graphene nanofibers is fine-tuned for different cementitious compositions of particular properties.