Methods and compositions using calcium carbonate
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.
1. A composition, comprising a hydraulic cement, the hydraulic cement comprising at least 47% w/w vaterite, wherein the composition upon combination with water, setting, and hardening has a compressive strength of at least 14 MPa.
2. A composition, comprising a hydraulic cement, the hydraulic cement comprising at least 10% w/w vaterite and at least 1% w/w amorphous calcium carbonate (ACC), wherein the composition upon combination with water, setting, and hardening has a compressive strength of at least 14 MPa.
3. The composition of claim 1 , wherein the composition has a compressive strength in a range of 20-40 MPa.
4. The composition of claim 1 , wherein the composition has a carbon isotopic fractionation value (δ 13 C) of between −12‰ to −25‰.
5. The composition of claim 1 , wherein the vaterite is in a range of 47% w/w to 99% w/w.
6. The composition of claim 2 , wherein the composition comprises ACC in a range of 1% w/w to 53% w/w.
7. The composition of claim 1 , further comprising a polymorph selected from the group consisting of amorphous calcium carbonate, aragonite, calcite, ikaite, a precursor phase of vaterite, a precursor phase of aragonite, an intermediary phase that is less stable than calcite, polymorphic forms in between these polymorphs, and combination thereof.
8. The composition of claim 1 , further comprising strontium (Sr) in an amount of 1-50,000 parts per million (ppm).
9. The composition of claim 1 , wherein the composition is a particulate composition with an average particle size of 0.1-100 microns.
10. The composition of claim 1 , further comprising nitrogen oxide, sulfur oxide, mercury, metal, derivative of any of nitrogen oxide, sulfur oxide, mercury, and/or metal, or combination thereof.
11. The composition of claim 1 , further comprising Portland cement clinker, aggregate, supplementary cementitious material (SCM), or combination thereof.
12. The composition of claim 1 , wherein the composition has a zeta potential of between −25 to 45 mV.
13. A method for making a composition of claim 1 , comprising:
(a) contacting an alkaline earth-metal containing water with a CO 2 source; and
(b) subjecting the alkaline earth-metal containing water of step (a) to one or more conditions to make the composition of claim 1 .
14. The method of claim 13 , wherein the CO 2 source is an industrial waste stream comprising flue gas from combustion; a flue gas from a chemical processing plant; a flue gas from a plant that produces CO 2 as a byproduct; or combination thereof.
15. The method of claim 13 , wherein the alkaline earth-metal containing water is sea water, brine, or combination thereof.
16. The method of claim 13 , wherein the one or more conditions comprise contacting the alkaline earth-metal containing water with a proton removing agent.
17. The method of claim 16 , wherein the proton removing agent is selected from the group consisting of oxide, hydroxide, carbonate, coal ash, naturally occurring mineral, and combination thereof.