Method of delivery of agents providing freezing and thawing resistance to cementitious compositions
AssigneeConstruction Research & Technology GmbH
InventorFrank Ong
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Abstract
A method of delivering an admixture providing freeze-thaw resistance to a cementitious composition is provided which includes the addition of a viscosity modifying admixture containing at least one of polymeric microspheres, at least partially degradable polymeric particles, or gas generating additives to cementitious compositions. The polymeric microspheres, at least partially degradable polymeric particles, and gas generating additives provide void spaces in the material matrix, and such void spaces act to increase freeze-thaw durability of the material.
Claims44
A method of delivering an admixture providing freeze-thaw resistance to a cementitious composition comprising adding to the cementitious composition a viscosity modifying admixture comprising a high molecular weight polymeric solution of polyethylene glycols, polysaccharides, or mixtures thereof, containing polymeric microspheres, wherein the viscosity modifying admixture containing the polymeric microspheres is added as a single admixture to the cementitious composition.
A frost durability admixture comprising a viscosity modifying admixture comprising a high molecular weight polymeric solution of polyethylene glycols, polysaccharides, or mixtures thereof containing polymeric microspheres.
A method of delivering an admixture providing freeze-thaw resistance to a cementitious composition comprising adding to the cementitious composition a viscosity modifying admixture comprising a high molecular weight polymeric solution containing a gas generating additive, wherein the viscosity modifying admixture containing the gas generating additive is added as a single admixture to the cementitious composition.
A frost durability admixture comprising a viscosity modifying admixture comprising a high molecular weight polymeric solution containing a gas generating additive.
A method of delivering an admixture providing freeze-thaw resistance to a cementitious composition comprising adding to the cementitious composition a viscosity modifying admixture comprising a high molecular weight polymeric solution containing at least partially degradable polymeric particles, wherein the degradable polymeric particles comprise a degradable polymer that is at least one of polylactic acid, polyglycolic acid or copolymers, or mixtures thereof;
- and, wherein the viscosity modifying admixture containing the degradable polymer particles is added as a single admixture to the cementitious composition.
A frost durability admixture comprising a viscosity modifying admixture comprising a high molecular weight polymeric solution containing at least partially degradable polymeric particles, wherein the degradable polymeric particles comprise a degradable polymer that is at least one of polylactic acid, polyglycolic acid or copolymers, or mixtures thereof.
Dependencies are inferred from the claim text.