Workable cementitious compositions

Details Workable cementitious compositions Workable cementitious compositions

1993-07-20

1996-02-27

Green, Anthony

Compositions: coating or plastic

Materials or ingredients

Additive materials for inorganic cements which contain a...

106802, 106808, 106809, 106810, 106822, 106823, 4273977, 427427, C04B 2400

Patent

active

054945160

ABSTRACT:
A process for modifying the slump of a concrete or mortar by the addition at different times of a water-soluble poly(alkylene oxide) and a .beta.-naphthalene sulphonate-formaldehyde condensate, a plasticizer or superplasticizer which is selected from lignosulphonates, melamine sulphonate formaldehyde condensates, carboxylates and selected styrene-maleic anhydride copolymers. The poly(alkylene oxide) is preferably partially replaced by a (hydroxy)alkyl cellulose. The process is advantageously used in shotcreting.

REFERENCES:
patent: 4746367 (1988-05-01), Meyer
patent: 5085708 (1992-02-01), Moriya et al.
patent: 5176753 (1993-01-01), Brook
patent: 5203919 (1993-04-01), Bobrowski et al.
patent: 5223036 (1993-06-01), Koxata et al.
Patent Abstracts of Japan, vol. 13, No. 134, C-581, Abstract of JP, A, 63-297255, Dec. 5, 1988.
Patent Abstracts of Japan, vol. 14, No. 261, C-725, Abstract of Japan, A, 2-74547, Mar. 14, 1990.

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