▎ 摘　　要

NOVELTY - Cementitious composition comprises a mixture including a cement binder and a graphene-based ink. USE - Cementitious composition, preferably concrete composition or mortar composition used in a cementitious article including architectural or structural article (all claimed). ADVANTAGE - The cementitious composition has improved working properties and durability, and provides environmental and cost benefits in the form of reduced water usage and reduced transportation needs. The graphene-based ink provides a more environmentally friendly solution than other chemical accelerators. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing a cementitious composition, which comprises mixing a cement binder and a graphene-based ink to produce the cementitious composition; and (2) a method for manufacturing a cementitious article, which comprises using the cementitious composition.