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Lecture
Are you an EPFL student looking for a semester project?
Work with us on data science and visualisation projects, and deploy your project as an app on top of Graph Search.
This lecture delves into the hydration process of calcium silicates, focusing on C3S and C₂S. It covers the formation of calcium hydroxide, portlandite, and calcium silicate hydrate (C-S-H), which constitutes a significant portion of the hydrated paste. The lecture explores the structure of C-S-H, including its variable calcium to silicate ratio and ways to modify it. It discusses the substitution of silicon by aluminum in C-S-H and the experimental evidence supporting its structure. The lecture also presents different models describing the atomic, meso, and microstructure of C-S-H, shedding light on its complex nature in cementitious materials.