초록

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.

대표청구항 ▼

1. A composition, comprising a non-naturally occurring supplementary cementitious material (SCM), the SCM 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 and wherein the composition compr

1. A composition, comprising a non-naturally occurring supplementary cementitious material (SCM), the SCM 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 and wherein the composition comprises a carbon isotopic fractionation value (δ13C) of between −12‰ to −25‰. 2. A composition, comprising a non-naturally occurring SCM, the SCM 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 and wherein the composition comprises a carbon isotopic fractionation value (δ13C) of between −12‰ to −25‰. 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 vaterite is in a range of 47% w/w to 99% w/w. 5. The composition of claim 2, wherein the composition comprises ACC in a range of 1% w/w to 53% w/w. 6. 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. 7. The composition of claim 1, further comprising strontium (Sr) in an amount of 1-50,000 parts per million (ppm). 8. The composition of claim 1, wherein the composition is a particulate composition with an average particle size of 0.1-100 microns. 9. The composition of claim 1, further comprising nitrogen oxide, sulfur oxide, mercury, metal, derivative of any of nitrogen oxide, sulfur oxide, mercury, metal, or combination thereof. 10. The composition of claim 1, further comprising Portland cement clinker, aggregate, other supplementary cementitious material (SCM), or combination thereof. 11. A composition, comprising a SCM of claim 1, wherein at least 16% by wt of SCM mixed with OPC upon combination with water, setting, and hardening, results in no more than 10% reduction in a compressive strength of the OPC at 28 days when compared to the compressive strength in a range of 17-45 MPa of the OPC along upon combination with water, setting, and hardening.