Five Star grout is a premixed cementitious grout developed for applications where an economical grout with good flow and strength is required. It is based on specially selected Portland cements graded aggregates and admixtures including a special form of carbon. This special formulation produces a grout which conforms to ATSM C827 Early volume Change of Cementitious Mixtures. It does not contain iron aluminium or other additives which produce non-shrink characteristics by chemical reaction. This eliminates any subsequent problems of dimensional instability corrosion or staining. Five Star grout is designed primarily as a flowing grout but can also be used at a trowellable or dry pack consistency.