The cement-based binders and concretes of architecture beyond the structural techniques already carried under Elements and Materials: Portland cement itself, traditional lime mortar, ancient Roman concrete, precast concrete, shotcrete, ferrocement, decorative terrazzo and lightweight autoclaved aerated concrete. Belongs here: any named cementitious material or concrete variant considered for its own composition and properties, distinct from plain, reinforced and prestressed concrete, already carried under Elements and Materials. Does not belong here: the structural principle a cementitious material enables, such as the tensile structure or space frame, which is Elements and Materials' subject.