Cement chemistries
AssigneeSolidia Technologies, Inc.
InventorVahit Atakan
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Abstract
A cementitious composition comprising a crystalline phase and an amorphous phase, and an activator selected from the group of materials comprising inorganic bases. In some cases the crystalline phase is gehlenite. In some cases the crystalline phase is anorthite. In some cases the amorphous phase is amorphous calcium aluminum silicate. In some cases the activator is elected from OPC (1-70 wt %), free lime (1-20 wt %), calcium hydroxide (1-20 wt %), and alkali hydroxides (NaOH, KOH 1 to 10 wt %), individually or in combination. A low lime cementitious material is cured by reaction with a curing reagent that includes a reagent chemical that is synthesized from CO2. Examples of such a reagent are oxalic acid and tartaric acid.
Claims7
A method of curing a cementitious material that is cured by reaction with CO2 and does not cure by reaction with water alone, comprising the steps of:
- providing a quantity of the cementitious material that is cured by reaction with CO2 and does not cure by reaction with water alone in uncured form;
- and
- exposing said cementitious material to a curing agent comprising a reagent chemical that is synthesized from CO2 for a time sufficient to cure said cementitious material.
A method of curing a cementitious material, comprising the steps of:
- providing a quantity of a cementitious material comprised of at least one material selected from the group consisting of a calcium silicate, a magnesium silicate, a calcium alumino silicate, a magnesium alumino silicate, gehlenite, and mellilite;
- adding a predetermined quantity of at least one material selected from the group consisting of a material comprising Al content, a material comprising Mg content and a material comprising Fe content of the cementitious material;
- and
- exposing said cementitious material to a curing agent comprising a reagent chemical that is synthesized from CO2 for a time sufficient to cure said cementitious material.
Dependencies are inferred from the claim text.