HOME

Cement: Agglomeration and weathering Agglomeration and weathering Effects Agglomeration / weathering Factors and recommendations Effects Poor flow of cement (in […]

Cement: Strength development Strength development Influencing factors: Let’s brainstorm … Strength development –Potential parameters o W/C o cement fineness o

Cement: Setting Definition – Measurement Influencing parameters Stiffening Setting Definition – Measurement Cement setting definition Setting opassage from liquid or plastic

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