Demolition facilitating agent
US4604143A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Apr 24, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G23/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A demolition-facilitating agent for durable structures, for example, concrete structures and rocks, comprises (A) 100 parts by weight of a mixture in the form of fine particles, consisting essentially of (1) 90 to 99% by weight of a clinker consisting of (a) 15 to 97% by weight of free CaO crystals, (b) 3 to 85% by weight of free 3CaO SiO.sub.2 crystals and (c) 0 to 10% by weight of an inevitable impurity, the clinker having been produced at a sintering temperature of 1200.degree. C. or more, and (2) 1 to 10% by weight, in terms of gypsum anhydride (CaSO.sub.4), of at least one gypsum compound; and (B) 0.4 to 4 parts by weight of a cement water-reducing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.