2 Responses to “1.3 Session Topic Instrumentation and Experimentation”
I would like to get our discussions going for coming up with a relevant set of topics and questions for our two panel discussions. These can be either things you plan on addressing in your talk or those you will not be addressing but think would be useful to discuss. Here are a few items that I hope will prompt your thinking on what would be useful to include:
1. How do we define the end of the early hydration period?
2. How well do we know the experimental conditions and what is needed to translate the experimental results into useful information for modeling?
3. What is the form of the sample during the experiment and are there issues to translate the measured results into useful constraints on the modeling?
4. Are there any techniques that have not been used that are promising to consider for future experimentation?
5. What are the best ways to benchmark the modeling approaches so that the data obtained from experiments are actually useful for modeling?
Suggested topics for discussion:
1. What is the nature of the initial product? (LD C-S-H or something with a different Ca/Si ratio…?)
2. What is the nucleation process?
3. What are the transport properties of the initial product? (Is it a diffusion barrier, so that ions are fed to the product by dissolution of the free surface, or does dissolution continue just as fast below the product?)
4. Where does the product deposit? (Is it uniformly deposited on the clinker particle, or does it form near the site that provided the ions? Does it all form on the clinker or does some precipitate or gel in the liquid phase?)
5. How do the particle size and shape distributions affect the percolation process?
6. What combination of methods can answer these questions?
7. What would we do with the information if we had it?