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Optimum sulphate content –Why? o to obtain a good workability o silicates normal hydration o better strength –The optimal quantity […]

Cement: hydration mechanisms   Hydration mechanisms Necessity of sulfate Hydration disorders Hydration energy   Hydration mechanisms Hydration of a clinker

Cement: The added components What’s cement? How does cement react? Added components What’s cement? Cement definition EN 197-1:2000 Hydraulic binder

clinker Grindability   Grinding … is necessary o to create surface area so that a good chemical reaction occurs (Blaine)

Interaction Raw mix Process quality of clinker Interaction raw mix chemical composition Raw mix chemical composition Example of raw mix chemical composition Burning

Influence of minor elements   Free lime o It is the lime which is not combined to other elements. This

Raw mix ratios signification recommended value The alumina ratio The silica ratio Exercise: what is the reason of a decrease of silica

Bogue formula Clinker minerals Decarbonated kiln raw mix Any changes in the 4 raw mix elements will change the proportions

Role of each component of the clinker Who is responsible for/gives strength? The preceding observations are confirmed by the strength curve