Mortar latex mix
US4398957A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 1982 |
| Grant date | Aug 16, 1983 |
| Priority date | — |
| Expiry date | Jan 18, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B24/2676
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Improved Portland cement compositions are provided by the use of a combination of additives which increase plasticity and allow the use of less water. When the mixture is cured or set, the resultant concrete has higher compressive strength, higher flexural and shear strength, is believed to be markedly less susceptible to penetration by moisture or corrosive liquids, and have greater freeze-thaw stability. Such concrete is highly advantageous in thin paving sections such as bridge deck overlays, overpasses, elevated freeways and the like. The preferred additives are a latex of a styrene-butadiene containing polymer and a dispersing agent such as a polymerized naphthalene sulfonic acid or a salt thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.