Masonry blocks and masonry concrete admixture for improved freeze-thaw durability
US6258161A · kind A · utility
18Cited by
25References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/29
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A masonry concrete, for use in making segmental retaining wall units, pavers, blocks, and the like, having zero slump and incorporating betaine for improving freeze-thaw durability, and optionally efflorescent control agents and/or water reducer agents. Exemplary admixtures and methods of improving the freeze-thaw durability of masonry units are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.