Patent ID: 9382156
Filing Date: 2016-07-05
CPC Classification: B28B,C04B,Y02W

Claim Text:
1. A low density cementitious article comprising: a monolithic cementitious matrix comprising a plurality of closed cell voids, wherein the size and shape of the closed cell voids are defined by the cementitious matrix; said closed cell voids are distributed throughout the matrix in a manner such that the density of the cementitious matrix remains uniform throughout the article, wherein the cementitious matrix has a density of greater than or equal to at least 0.5 g/cm wherein the composition of the cementitious matrix comprises 35-70% cement; 0-15% reinforcing fibers; 0-0.1% air entrainment agents; 10-70% siliceous aggregates; and 0.6-1% viscosity enhancement agents, wherein said closed cell voids are distributed so that there are between 25 and 2000 voids per cm