Grouting method and apparatus

United States of America Patent

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Jan 15, 1991
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N/A
app pub date
Oct 2, 1989
filing date
Oct 3, 1988

priority date (Note)
Expired

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Abstract

A gelling agent is added to a fast setting cement slurry comprising water, cement and anti-washout retarder and the mix is injected into a void containing running water and allowed to set to form rapidly a material of high compressive strength.

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Patent Owner(s)

Patent Owner	Address
FOSROC INTERNATIONAL LIMITED A COMPANY OF ENGLAND	285 LONG ACRE NECHELLS BIRMINGHAM B7 5JR

International Classification(s)

E21D:SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAM....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Annett, Martin F	Oxford, GB	2	12
France, Barry	Hythe, GB	2	12
Stanford, Tania	Milton Keynes, GB	1	8

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Grouting method and apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07415945

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PATENT NO	4984933
SERIAL NO	07415945
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07415945

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