Statical demolition-facilitating agent

Details Statical demolition-facilitating agent Statical demolition-facilitating agent

1988-05-24

1990-08-28

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106681, 106792, 106793, 106797, 241 1, 423635, C04B 202, B02C 1900

Patent

active

049522434

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.

REFERENCES:
patent: 4316583 (1982-02-01), Kawano et al.
patent: 4354877 (1982-10-01), Kawano et al.
patent: 4409030 (1983-10-01), Minegishi et al.
patent: 4600154 (1986-07-01), Hirota et al.
patent: 4604143 (1986-08-01), Suzukawa et al.
patent: 4713115 (1987-12-01), Sato et al.

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