Hydratationskontrolle von Zementsystemen

摘要

Hydration control in cementitious compositions is achieved by adding a retarding quantity of a neutralized salt of a alpha -monohydroxy di- or multifunctional carboxylic acid to the initial mix and an activating quantity of a neutralized salt of a alpha -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.