Rapid-hardening cement composition
US10759698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2017 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Jul 27, 2037 |
Classification
- Technology area (CPC —)General
Abstract
This rapid-hardening cement composition includes: a rapid-hardening admixture; and cement in an amount of 100 parts by mass to 2,000 parts by mass with respect to 100 parts by mass of the rapid-hardening admixture, wherein the rapid-hardening admixture is a composition that contains: calcium aluminate; inorganic sulfate in an amount of 50 parts by mass to 200 parts by mass with respect to 100 parts by mass of the calcium aluminate; and a setting modifier in an amount of 0.1 parts by mass to 10 parts by mass with respect to 100 parts by mass of the calcium aluminate, and an average particle diameter of the calcium aluminate is in a range of 8 μm to 100 μm, and an average particle diameter of the setting modifier is in a range of 5 μm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.