Light-weight aggregate
US4624711A · kind A · utility
128Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 7, 1984 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Nov 7, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A light-weight aggregate, for use in production of light-weight structural products, composed of a self-hardening fly ash, a surfactant foam, and optionally an accelerator and additives. The self-hardening fly ash is preferably class C fly ash formed by the combustion of sub-bituminous coal from the Power River Basin. The surfactant foam is preferably an anionic sulfate surfactant foam. The accelerator is preferably an extract of silica fume dust. The additives may include magnesium and boron compounds, other fly ashes, light-weight fillers, polymers, cement and magnesium silicate and like materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.