Cement spraying admixture

Details Cement spraying admixture Cement spraying admixture

1996-12-17

1999-06-15

Marcheschi, Michael

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106802, 106815, 106819, 106823, 106724, 106725, 4273977, 427427, C04B 2400

Patent

active

059118199

ABSTRACT:
A method for coating a substrate with a cementitious composition by spraying, comprising the addition to the initial cementitious mix one of a .beta.-naphthalene sulphonate-formaldehyde condensate and a water-soluble poly(alkylene oxide) of molecular weight from 100,000-8,000,000, the other being added at the spraying nozzle, there being additionally added at the nozzle (preferably as a single component with the other nozzle-added material) an accelerator selected from aluminium sulphate, aluminium hydroxide and aluminium hydroxysulphate. In a preferred embodiment, the material added at the nozzle also contains a superplasticiser.

REFERENCES:
patent: 4419135 (1983-12-01), Hoge
patent: 4507154 (1985-03-01), Burge et al.
patent: 5158996 (1992-10-01), Valenti
patent: 5224595 (1993-07-01), Sugimoto et al.
patent: 5494516 (1996-02-01), Drs et al.
patent: 5609681 (1997-03-01), Drs et al.
French Search Report for FR 9603129 dated Apr. 8, 1997.

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