Cementitious binders containing pozzolanic materials
AssigneeGreen Binder Technologies Ltd.
InventorsAlon Raz, Nechemia Masury
Life of this patent
Estimating the term…
Abstract
A cementitious composition including: a binder containing (a) 60-94%, by weight, of at least one pozzolanic material; (b) at least 0.5% calcium sulfoaluminate (CSA), by weight; (c) 1.2-11% by weight, expressed as SO3, of at least one inorganic sulfate selected from the group of sulfates consisting of a calcium sulfate hemihydrate, an anhydrous calcium sulfate, a calcium sulfate dihydrate, a sodium sulfate, and a sodium calcium sulfate; and (d) a total sulfate content of at least 3%, by weight, expressed as SO3, the cementitious composition including, at most, 3% natural lime, the cementitious composition including, at most, 10% alumina cement, the contents of the composition being calculated on a dry, aggregateless basis.
Claims20
A cementitious composition comprising:
- a binder containing:
- (a) 72-94%, by weight, of ground granular blast furnace slag (GGBFS);
- (b) at least 0.5% calcium sulfoaluminate (CSA), by weight, said CSA having the structure 3CaO.3Al2O3.CaSO4;
- (c) 1.2-11% by weight, expressed as SO3, of at least one inorganic sulfate selected from the group of sulfates consisting of a calcium sulfate hemihydrate, an anhydrous calcium sulfate, a calcium sulfate dihydrate, a sodium sulfate, and a sodium calcium sulfate;
- and
- (d) a total sulfate content of at least 3%, and at most 11%, by weight, expressed as SO3;
- the cementitious composition comprising, at most, 3% natural lime;
- the cementitious composition comprising, at most, 3% alumina cement;
- the cementitious composition comprising, at most 3% of an Ordinary Portland Cement (OPC);
- the cementitious composition comprising, at most, 5% of said CSA;
- the contents of the composition being calculated on a dry, aggregateless basis.
A cementitious composition comprising:
- a binder containing:
- (a) 72-94%, by weight, of ground granular blast furnace slag (GGBFS);
- (b) at least 0.5% calcium sulfoaluminate (CSA), by weight, said CSA having the structure 3CaO.3Al2O3.CaSO4;
- (c) 1.2-11% by weight, expressed as SO3, of at least one inorganic sulfate selected from the group of sulfates consisting of a calcium sulfate hemihydrate, an anhydrous calcium sulfate, a calcium sulfate dihydrate, a sodium sulfate, and a sodium calcium sulfate;
- and
- (d) a total sulfate content of at least 3%, and at most 11%, by weight, expressed as SO3;
- the cementitious composition comprising, at most, 3% natural lime;
- the cementitious composition comprising, at most, 3% alumina cement;
- the cementitious composition comprising, at most 3% of an Ordinary Portland Cement (OPC);
- the cementitious composition comprising, at most, 5% of said CSA;
- the contents of the composition being calculated on a dry, aggregateless basis;
- the cementitious composition further comprising water;
- said binder and said water forming a wet cementitious mixture.
A cementitious composition comprising:
- a binder containing:
- (a) 72-94%, by weight, of ground granular blast furnace slag (GGBFS);
- (b) at least 0.5% calcium sulfoaluminate (CSA), by weight, said CSA having the structure 3CaO.3Al2O3.CaSO4;
- (c) 1.2-11% by weight, expressed as SO3, of at least one inorganic sulfate selected from the group of sulfates consisting of a calcium sulfate hemihydrate, an anhydrous calcium sulfate, a calcium sulfate dihydrate, a sodium sulfate, and a sodium calcium sulfate;
- and
- (d) a total sulfate content of at least 3%, and at most 11%, by weight, expressed as SO3;
- the cementitious composition comprising, at most, 3% natural lime;
- the cementitious composition comprising, at most, 3% alumina cement;
- the cementitious composition comprising, at most 2% of an Ordinary Portland Cement (OPC);
- the cementitious composition comprising, at most, 5% of said CSA;
- the contents of the composition being calculated on a dry, aggregateless basis.
Dependencies are inferred from the claim text.