Statical demolition-facilitating agent
US4952243A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1988 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | May 24, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B28/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A durable structure can be easily and safely demolished by using a demolition-facilitating agent comprising, as an effective principal component 50% to 100% by weight of quick lime particles having an apparent density of 2.0 or more, a weight per unit volume of 1.0 kg/l or more, a particle size of 15 mm or less, and an average particle size of 0.1 mm or more, and optionally, additional solid particles, for example, sand particles, which are inert to water, rigid, porous inorganic grains, for example, hydrated zeolite grains, or a water-absorbing organic material, for example, acrylonitrile-grafted starch in a manner such that the demolition-facilitating agent in the dry state is fed into holes formed in a durable structure to be demolished and then water is fed into the holes to allow the quick lime particles to react with water and thus expand, to demolish the durable structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.