Patent ID: 8414700

Claim:
A narrow PSD hydraulic cement composition comprising: a plurality of hydraulic cement particles that, when mixed with water, react to form a cementitious binder comprised of at least one of calcium silicate hydrates, calcium aluminum hydrates, magnesium silicate hydrates, or magnesium aluminum hydrates, the hydraulic cement particles having a particle size distribution (PSD) defined by a lower endpoint d10, a median particle size d50, an upper endpoint d90, and a ratio d90/d10, wherein the upper endpoint d90 of the PSD of the hydraulic cement particles is in a range of 11 μm to 30 μm, the median particle size d50 is equal to or greater than 5 μm, and the lower endpoint d10 of the PSD of the hydraulic cement particles is equal to or greater than 2 μm, wherein the d90 and d10 are selected so that the ratio d90/d10 is less than or equal to 14.5.