Durability improving agent and cement composition
US8674058B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 13, 2010 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | May 13, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/34
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
It is an object of the present invention to provide a durability improving agent for a cement composition that improves the freezing-thawing resistance of the cement composition and also exhibits a sufficient shrinkage reducing performance as well, and a cement composition including such a durability improving agent. Specifically, the present invention provides a durability improving agent for a cement composition, characterized by comprising a hydrocarbon-based compound having an average molecular weight of 150 to 600 and a pour point of 20° C. or less as an active ingredient, and a cement composition including such durability improving agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.