Workable cementitious compositions

Details Workable cementitious compositions Workable cementitious compositions

C - Chemistry, Metallurgy

04

B

C04B 24/28 (2006.01) C04B 24/04 (2006.01) C04B 24/16 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2119007

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.

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