Cement and concrete with calcium aluminates
Provided herein are systems, methods, and compositions related to mixtures of calcium aluminate cements with compositions comprising carbonate. The compositions comprising carbonates may be formed by sequestering carbon dioxide.
1. A cementitious composition, comprising: calcium aluminate cement (CAC) and a composition comprising carbonate wherein the composition comprising carbonate comprises a metastable component selected from the group consisting of vaterite, amorphous calcium carbonate, and combination thereof.
2. The cementitious composition of claim 1 , wherein the composition comprising carbonate comprises or has at least one of the following:
a) at least 50 wt % vaterite;
b) a δ 13 C value less than −12.0‰;
c) a wet paste pH of less than 12; and combinations thereof.
3. The cementitious composition of claim 1 , wherein the composition comprising carbonate is a self-cement composition.
4. The cementitious composition of claim 1 , wherein the composition comprising carbonate is a partial cement substitute.
5. The cementitious composition of claim 1 , wherein the cementitious composition exhibits one or more of properties selected from the group consisting of higher reactivity of carbonate with aluminate phases, formation of monocarboaluminates, formation of hemicarboaluminates, higher compressive strength, higher durability over long time period, higher mechanical and structural properties, and combinations thereof, as compared to CAC alone.
6. The cementitious composition of claim 1 , wherein the composition comprising carbonate has a mean particle size of between 1-25 microns.
7. The cementitious composition of claim 1 , wherein the cementitious composition further comprises ordinary Portland cement, a Portland cement blend, pozzolan-lime cement, slag-lime cement, supersulfated cement, calcium sulfoaluminate cement, geopolymer cement, aggregate, admixtures, or combinations thereof.
8. The cementitious composition of claim 1 , wherein the composition comprising carbonate comprises between 50-99 wt % vaterite.
9. The cementitious composition of claim 1 , wherein the composition comprising carbonate has a δ 13 C value of between −12.0‰ to −40‰.
10. The cementitious composition of claim 1 , wherein the composition comprising carbonate comprises a wet paste pH of between 8-12.
11. The cementitious composition of claim 1 , comprising between 5-80 wt % composition comprising carbonate and 20-95 wt % of CAC.
12. The cementitious composition of claim 1 , wherein the carbonate in the composition comprising carbonate is derived in whole or in part from carbon dioxide removed from an industrial waste stream.
13. The cementitious composition of claim 1 , wherein the cementitious composition after combination with water, setting, and hardening has a compressive strength of between 10-55MPa.
14. A method for forming a cementitious or concrete composition, comprising: combining a composition comprising carbonate wherein the composition comprising carbonate comprises a metastable component selected from the group consisting of vaterite, amorphous calcium carbonate, and combination thereof composition, with CAC to produce a cementitious or concrete composition.
15. The method of claim 14 , further comprising a) making a composition comprising carbonate by contacting an industrial waste gas stream comprising carbon dioxide with a proton removing agent to form a carbon dioxide charged water; b) contacting the carbon dioxide charged water with divalent cations to form the composition comprising carbonate wherein the carbonate comprises a metastable component selected from the group consisting of vaterite, amorphous calcium carbonate, and combination thereof; and c) combining the composition comprising carbonate with CAC, to form the cementitious or the concrete composition.
16. The method of claim 15 , wherein the contacting of the carbon dioxide charged water with the divalent cations is under precipitation conditions that favor the formation of the composition comprising a metastable component selected from the group consisting of vaterite, amorphous calcium carbonate, and combination thereof.
17. The method of claim 16 , wherein the precipitation conditions favor the formation of more than 50 wt % vaterite in the composition.
18. The method of claim 16 , wherein the precipitation conditions include temperature, pH, residence time, proton removing agent, additive, ion ratio, rate of precipitation, mixing rate, form of agitation, presence of seed crystal, catalyst, membrane, substrate, separation, drying, refining, and combinations thereof.
19. The method of claim 15 , wherein the industrial waste gas stream is from an industrial plant include a power plant, chemical processing plant, steel mill, paper mill, cement plant, other industrial plant that produces CO 2 as a byproduct, and combinations thereof.
20. The method of claim 15 , wherein the proton removing agent is NaOH, Na 2 CO 3 , KOH, K 2 CO 3 , NH 4 OH, Ca(OH) 2 , Mg(OH) 2 , or combinations thereof.
21. The method of claim 15 , wherein the divalent cation comprises calcium.
22. The method of claim 14 , further comprising contacting the cementitious or the concrete composition with water when the vaterite converts to aragonite and the composition sets and hardens into cement.
23. The method of claim 14 , further comprising contacting the cementitious or the concrete composition with water; interacting vaterite with aluminate in CAC; and forming monocarboaluminate, hemicarboaluminate, or combinations thereof
24. The method of claim 14 , further comprising adding to the composition a component selected from the group consisting of ordinary Portland cement, a Portland cement blend, pozzolan-lime cement, slag-lime cement, supersulfated cement, calcium sulfoaluminate cement, geopolymer cement, and combinations thereof.
25. A composition, produced according to the method of claim 14 .