Patent ID: 7799128
Filing Date: 2010-09-21
Classification: C04B,Y02W,Y10S

Abstract:
1. A pozzolan cement composition comprising: a distribution of differently sized pozzolan particles capable of reacting with calcium hydroxide in the presence of water in order to form solid hydration products having cementitious properties, the pozzolan particles having a D a distribution of differently sized hydraulic cement particles at least partially comprised of tricalcium silicate and/or dicalcium silicate that provide excess calcium hydroxide when mixed with water and that is available for reaction with at least a portion of the pozzolan particles, the hydraulic cement particles having a D wherein the fineness of the hydraulic cement particles is about 1.25 to about 50 times greater than the fineness of the pozzolan particles, wherein at least about 65% of the combined pozzolan and cement particles larger than about 20 μm comprise pozzolan particles and less than about 35% of the combined pozzolan and cement particles larger than about 20 μm comprise hydraulic cement particles.