Patent ID: 8377201

Claim:
A cement-SCM composition, comprising: a narrow PSD hydraulic cement fraction comprising: a plurality of hydraulic cement particles comprising one or more minerals that, when mixed with water, react to form a cementitious binder comprised of at least one of calcium silicate hydrates or calcium aluminum hydrates, the hydraulic cement particles in the narrow PSD hydraulic cement fraction having a particle size distribution (PSD) defined by a lower endpoint d10, an average particle size, and an upper endpoint d90, wherein the upper endpoint d90 of the PSD of the hydraulic cement particles is in a range of 11 μm to 30 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 PSD of the hydraulic cement particles has a ratio d90/d10 of less than or equal to 14.5; and one more types of supplementary cementitious material (SCM) particles selected from the group consisting of pozzolans, fly ash, slag, ground granulated blast-furnace slag, natural pozzolans, artificial pozzolans, limestone, ground limestone, ground quartz, ground filler materials, and pulverized fuel ash, the one or more types of SCM particles comprising: a coarse SCM fraction comprising coarse SCM particles having an average particle size greater than the average particle size of the hydraulic cement particles so that greater than 50% of particles larger than 20 μm provided by the coarse SCM fraction and hydraulic cement fraction comprise the coarse SCM particles and the average particle size of the coarse SCM fraction is in a range of about 1.25 times to about 25 times the average particle size of the hydraulic cement fraction, and an ultrafine SCM fraction comprising SCM particles having a particle size so that at least 50% of particles smaller than 3 μm provided by the ultrafine SCM fraction and the hydraulic cement fraction comprise the ultrafine SCM particles.