Patent · US Expired

Concrete formulation

US6875266B1 · kind B1 · utility

25Cited by

1References

19Claims

0Family size

Assignee

James Hardie Research Pty Limited · AU

Inventors

Basil Naji · Toongabbie, AU
Ihor Himezak · Carnegie Homestead, AU
David Stitt · Chatswood, AU

Key dates

Filing date	Apr 10, 2000
Grant date	Apr 5, 2005
Priority date	—
Expiry date	Apr 10, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/91
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

An additive for use in the preparation of lightweight concrete, said additive including a blend of from around 40% to 99% of organic polymeric material and from 1% to around 60% of an air entraining agent. The additive is particularly suitable for the preparation of lightweight concrete which uses polystyrene aggregate. It provides for excellent dispersion of the polystyrene aggregate and improved bond between the polystyrene aggregate and surrounding cementitious binder. The resultant lightweight concrete formulation may be pumped and is particularly suitable for sandwich wall construction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.