Hydrating modern low-clinker cements

The hydration of cement is a complex interplay between the dissolution of cement clinker phases and the precipitation of strength-forming hydrate phases. When cement clinker is substituted, these reactions are influenced by the physical properties and chemical reactivity of the materials used. To achieve an optimum compromise between the necessary strength for the respective application, especially in the early stage, sufficient processability and the ecological & economic advantages, the ingredients must be matched to each other in the best possible way. This applies not only to the maximum substitution rate, but also to the mixing ratio of the main cement ingredients used (e.g. calcined clay, granulated blast furnace slag and pulverized limestone) or the dosage of sulfate carriers, which can be used to optimize setting and hardening behavior.
 

A broad base: our research methods in the field of cement hydration

We have the know-how to analyze and adjust these complex systems using the following methods, among others:

• Isothermal heat flow calorimetry to measure the heat of hydration and adjust the sulfate carrier
• In-situ x-ray diffraction to quantitatively analyze hydrate phase formation
• Scanning electron microscopy to characterize the hydrate phases

Have we aroused your interest? We will gladly advise you and assist you with your project!