Cementitious, self-binding material with reduced or no cement
AssigneeKing Abdullah University of Science and Technology
InventorsKhabiboulakh KATSIEV, Illia SHEVCHENKO
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Abstract
A cementitious material includes activated sand, which has a fresh surface area of at least 60% of a total surface area, inorganic crosslinkers, each being a chain of calcium, silicon and oxygen atoms, and cement up to 5% by weight of a total mass of the cementitious material. The inorganic crosslinkers bond sand grains to each other, and the fresh surface area is not present in raw sand from which the activated sand is obtain by disintegration.
Claims20
A cementitious material comprising:
- activated sand which has a fresh surface area of at least 60% of a total surface area;
- inorganic crosslinkers, each being a chain of calcium, silicon and oxygen atoms;
- and
- cement up to 5% by weight of a total mass of the cementitious material,
- wherein the inorganic crosslinkers bond sand grains to each other, and
- wherein the fresh surface area is not present in raw sand from which the activated sand is obtain by disintegration.
A cementitious material comprising:
- activated sand, which has a fresh surface area of at least 60% of a total surface area;
- and
- inorganic crosslinkers each being a chain of calcium, silicon and oxygen atoms
- wherein the inorganic crosslinkers bond sand grains to each other,
- wherein the fresh surface area is not present in raw sand from which the activated sand is obtain by disintegration, and
- wherein the cementitious material is free of cement and has a hardness of about to 1000 kg/cm2 due to the inorganic glue.
A method for making a cementitious material, the method comprising:
- receiving raw sand;
- disintegrating a surface of the raw sand to form activated sand, wherein the activated sand has a fresh surface area of at least 60% of the raw sand;
- mixing the activated sand with a lime-base product to form a mixture having calcium silicate hydrates on the fresh surface area;
- shaping the mixture into an intermediate product;
- and
- curing the intermediate product to form a final product in which sand grains are bonded to each other by inorganic crosslinkers formed from the calcium silicate hydrates,
- wherein the final product is free of cement and has a hardness of about 600 to 1000 kg/cm2 due to the inorganic glue.
Dependencies are inferred from the claim text.