Hydration control of cementitious systems

Details Hydration control of cementitious systems Hydration control of cementitious systems

C - Chemistry, Metallurgy

04

B

C04B 40/06 (2006.01) C04B 24/04 (2006.01) C04B 24/06 (2006.01) C04B 28/02 (2006.01)

Patent

CA 2158502

Hydration control in cementitious compositions is achieved by adding a retarding quantity of a water-soluble neutralized salt of a .alpha.-monohydroxy di- or multifunctional carboxylic acid to the initial mix and an activating quantity of a water- soluble neutralized salt of a a-monohydroxy di- or multifunctional carboxylic acid when activation is required. Salts of citric, malic and citramalic acids are particularly favoured. Such control is especially useful in the application of shotcrete.

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