Treated cement materials and methods
AssigneeGeorgia Tech Research Corporation
InventorsPrasanth Alapati, Kimberly E. Kurtis
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Abstract
Disclosed herein are thermodynamically stable cement systems comprising a curing agent mixed with a CAC. The curing agent can be hydrophilic to attract bound water. In such a manner, the addition of the curing agent can treat the CAC. The treated material can then be cured to form a thermodynamically stable cement material. The curing agent can comprise a natural fiber material that comprises cellulose. Alternatively, or in addition, the curing agent can comprise cellulose nanoparticles, such as cellulose nanofibrils (CNFs) or cellulose nanocrystals (CNCs). Also disclosed herein are methods of making the same.
Claims23
In a method of forming a thermodynamically stable cement material comprising:
- mixing a curing agent with a cementitious material;
- and
- curing the mixed cementitious material at one or more curing temperatures through one or more metaphases until a thermodynamically stable phase is reached;
- the improvement comprising:
- mixing the curing agent with the cementitious material comprising a calcium aluminate cement (CAC);
- and
- curing the mixed CAC at one or more of the curing temperatures to directly form the thermodynamically stable phase, without forming one or more of the metaphases, to form the thermodynamically stable cement material.
A method of forming a thermodynamically stable cement material comprising:
- mixing a curing agent with a calcium aluminate cement (CAC);
- and
- curing the mixed CAC at one or more curing temperatures to directly form a thermodynamically stable phase, without forming one or more metaphases, to form the thermodynamically stable cement material;
- wherein the curing agent causes a curing reaction following the formula:
- 6CA+60H→2C3AH6+4AH3+36H.
Dependencies are inferred from the claim text.