Microstructured carbonatable calcium silicate clinkers and methods thereof
First Claim
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1. A non-hydraulic clinker material, comprisingparticles of uncarbonatable silica (SiO2), having diameters from about 0.1 μ
- m to about 1,000 μ
m, dispersed in a matrix comprising at least one carbonatable calcium silicate phase, whereinthe at least one carbonatable calcium silicate phase comprises at least one of wollastonite and pseudowollastonite and at least one of rankinite (Ca3Si2O7) and belite (Ca2SiO4), andelemental Ca and elemental Si are present in the clinker at an atomic ratio from about 0.8 to about 1.2.
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Abstract
The invention provides novel, microstructured clinker and cement materials that are characterized by superior grindability and reactivity. The disclosed clinker and cement materials are based on carbonatable calcium silicate and can be made from widely available, low cost raw materials via a process suitable for large-scale production. The method of the invention is flexible in equipment and processing requirements and is readily adaptable to manufacturing facilities of conventional Portland cement.
39 Citations
16 Claims
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1. A non-hydraulic clinker material, comprising
particles of uncarbonatable silica (SiO2), having diameters from about 0.1 μ - m to about 1,000 μ
m, dispersed in a matrix comprising at least one carbonatable calcium silicate phase, whereinthe at least one carbonatable calcium silicate phase comprises at least one of wollastonite and pseudowollastonite and at least one of rankinite (Ca3Si2O7) and belite (Ca2SiO4), and elemental Ca and elemental Si are present in the clinker at an atomic ratio from about 0.8 to about 1.2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- m to about 1,000 μ
Specification