ICCC Prague 2019 - Textbooks are outdated about cement hydration mechanisms - The Needle model ...
Channel: Alexandre Ouzia
Date: 2019-09-24

This talk was given at the 15th ICCC (International Congress on the Chemistry of Cement) in Prague.

Title: Old textbooks are outdated about cement hydration mechanisms - The Needle model, the main hydration and the later ages

Outline of the talk:

Part 1: Textbooks are outdated
- Main hydration peak
NOT nucleation and growth by impingement
NOT diffusion barrier
- Later ages
NOT diffusion barrier
NOT dissolution

Part 2: The Needle model and its contributions
- Main hydration peak
- understanding of the mechanism of an admixture
A new interpretation
- Later ages
The external space-filling rule of thumb: 𝐷𝑜𝐻=1.6 𝑤/𝑐


For any question, please refer to:
(Scrivener et al., 2019, CCR, sections 2.2, 2.3 and 4) (keynote paper that covers about the same as this presentation): https://www.sciencedirect.com/science/article/pii/S0008884619308051 
or for more details about the main hydration peak (Ouzia & Scrivener, 2019): https://www.sciencedirect.com/science/article/pii/S0008884617305173
or for in-depth covering with many other points: (Ouzia's thesis): https://infoscience.epfl.ch/record/265591?ln=en

In any case, feel free to contact the author by email: firstname.name[at]epfl.ch