Patent ID: 9090506
Filing Date: 2015-07-28
Classification: C04B,Y02W

Abstract:
1. A loose aggregate composition consisting of loose aggregate particles separated from a mixture of ingredients: the mixture consisting of: water, cementitious reactive powder consisting of fly ash and a calcium sulfate selected from the group consisting of calcium sulfate hemihydrate, calcium sulfate dihydrate, and mixtures thereof, and optional silica fume, an alkali metal salt of citric acid selected from the group consisting of sodium citrate, potassium citrate and mixtures thereof, a foaming agent, optionally at least one or more members selected from the group consisting of secondary aggregate other than said loose aggregate, superplasticizer, set accelerating agents other than said alkali metal salt of citric acid, set retarding agents, shrinkage control agents, thickening agents, coloring agents, and internal curing agents, and aggregate particles consisting of the fly ash and calcium sulfate in the mixture and crystalline hydration products of the fly ash and calcium sulfate which are interspersed within and between the aggregate particles to bind the aggregate particles.