Shrinkage reducing additive for cement compositions

Details Shrinkage reducing additive for cement compositions Shrinkage reducing additive for cement compositions

C - Chemistry, Metallurgy

04

B

C04B 28/00 (2006.01) C04B 24/32 (2006.01) C04B 24/42 (2006.01)

Patent

CA 2521610

A method of reducing the drying shrinkage of a cementitious composition to which water has been added and the composition placed, comprising adding to the composition prior to placement at least one siloxane compound that is at least one of liquid and soluble in at least one of water and aqueous alkali.

L'invention concerne un procédé permettant de réduire le retrait au séchage d'une composition à base de ciment, à laquelle on a ajouté de l'eau. Ce procédé consiste à ajouter à la composition, avant sa mise en place, au moins un composé de siloxane qui est liquide et/ou soluble dans l'eau et/ou dans un alcali aqueux.

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