Cement composition, its use for the production of a self-leveling liquid casting, and a casting thus obtained
AssigneeCiments Francais
InventorsPierre Colombet, Jean Ambroise, Jean-Pierre Grelaud, Michel Pasquier
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Abstract
A cement composition for liquid casting, based on a binder comprising Portland cement and additives comprising at least a fluidizer and a combination of a thickening agent acting by steric exclusion and a gelling thickening agent. The composition can also include a surface active agent to regulate the quantity of entrained air. Mixed with water and an aggregate, it permits obtaining, in a single casting, a self-leveling casting of a high thickness (equal to at least 6 cm) and of low density (about 1.6 to 1.9).
Claims20
A self-leveling casting produced from a cement composition, said casting consisting of:
- 100 parts Portland cement;
- at least one fluidizer;
- a surface active agent in an amount of 0.01 to 0.15 part of said Portland cement permitting adjusting the quantity of entrapped air about 15 and 20% in volume in the final casting;
- and
- a combination of a thickening agent acting by steric exclusion and a gelling thickening agent,
- wherein said casting is without supplemental addition of calcium sulfate in the form of anhydrite or gypsum and has a density of the order of about 1.6 to 1.9.
A self-leveling casting consisting of:
- 100 parts by weight of Portland cement;
- from 0.01 to 0.15 part of surface active agent;
- from 0.3 to 1 part fluidizer;
- from 0.02 to 1 part of thickening agent;
- and
- from 0.1 to 0.5 part of gelling agent, wherein said composition has about 15 and about 20% in volume of entrapped air and a density of the order of about 1.6 to 1.9.
A self-leveling casting consisting of:
- 100 parts of Portland cement;
- 0.3 to 1 part fluidizer;
- 0.02 to 1 part of thickening agent acting by steric exclusion;
- 0.1 to 0.5 part of gelling thickening agent and part of a surface active agent, wherein said casting is without addition of calcium sulfate in the form of anhydrite or gypsum,
- said casting has about 15 and about 20% in volume of entrapped air, and said casting has a density of the order of about 1.6 to 1.9.
A self-leveling casting comprising:
- 100 parts of Portland cement;
- 0.3 to 1 part fluidizer;
- 0.02 to 1 part of thickening agent acting by steric exclusion;
- 0.1 to 0.5 part of gelling thickening agent and 0.01 to 0.15 parts of a surface active agent, wherein said casting is without addition of supplemental calcium sulfate in the form of anhydrite or gypsum,
- said casting has about 15 and about 20% in volume of entrapped air, and said casting has a density of the order of about 1.6 to 1.9.
Dependencies are inferred from the claim text.