Methods and compositions using calcium carbonate
AssigneeCalera Corporation
InventorsIRVIN CHEN, MIGUEL FERNANDEZ, JOSHUA PATTERSON, MARTIN DEVENNEY
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Abstract
Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided.
Claims26
1-47. (canceled)
A construction panel comprising, a composition or a set and hardened form of the composition wherein the composition comprises a non-naturally occurring supplementary cementitious material (SCM) or a non-naturally occurring hydraulic cement, where the SCM or the hydraulic cement comprises at least 10% w/w vaterite and at least 1% w/w aragonite, wherein the composition has a carbon isotopic fractionation value (δ13C) of less than −12%.
A method for making a construction panel, comprising:
- contacting an alkaline earth-metal containing water with a CO2 source;
- subjecting the alkaline earth-metal containing water to one or more conditions to make a composition, wherein the composition comprises at least 10% w/w vaterite and at least 1% w/w aragonite, wherein the composition has a carbon isotopic fractionation value (δ13C) of less than −12%,
- combining the composition with an aqueous medium under one or more suitable conditions;
- and
- allowing the composition to set and harden into a construction panel.
Dependencies are inferred from the claim text.