US 8,323,782 B2 · Stratified cementitious composite

Abstract

The present invention relates to a method for forming a stratified cementitious body comprising placing a cementitious slurry comprising a cementitious binder, to form the body in a single pour and curing the slurry to form a stratified cementitious body. The method may also comprise the steps of mixing a cementitious binder and at least one aggregate material with water to form a slurry, pouring the slurry into a mold, allowing the slurry to stratify into layers under the influence of gravitational forces and/or buoyancy forces, optionally applying vibrations to the slurry to encourage the slurry to stratify into layers, and curing the slurry to form a stratified cementitious body.

Claims56

Dependent claims

A stratified cementitious body formed in a single pour from a cementitious slurry comprising a cementitious binder, the slurry having:

a yield shear stress of less than about 300 Pa, and
a plastic viscosity of less than about 70 Pa·s,
wherein the cementitious slurry comprises a more dense and a less dense aggregate material mixed with the cementitious binder and water.

Dependencies are inferred from the claim text.

Facts

Application

12/520,846Filed 14 Dec 2007

Priority

NZ 55228820 Dec 2006

Published

US 2010/0143696 A110 Jun 2010

Granted

4 Dec 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification15 codes

B28B 23/0081
Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material;…
C04B 28/006
Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic…
C04B 28/02
Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic…
Y02P 40/10
Technologies relating to the processing of minerals: production of cement, e.g. improving or optimising the production methods; Cement grinding

Stratified cementitious composite

Life of this patent

Stratified cementitious composite

Life of this patent

Abstract

Claims56