This videos introduced the fast X-ray computed tomography technique. This technique allows you to take 3D images of very complicated reactions at the nanoscale level. For this video we watch 550 C3S particles react from 18 min to 7 h. We make some very important findings.
1. The reaction around the particles are not uniform
2. When you divide the volume change by the surface area then the change is uniform. This means the average rate of reaction is constant for particles of different sizes.
3. Despite the average being constant the distribution of the volume change per surface area is not constant. This means that even though on average the particles perform the same there is significant difference in how the individual particles behave.
This work is important to help us understand and ultimately model cement hydration. This would be an awesome predictive tool that could help a lot of people with their concrete.

This work was completed by Sonia Li, Qinang Hu, Bret Robertson, Vince De Andrade, and Ghazal Sokhansefat.

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A huge thanks to Hailey Goodale, my director of awesome, for editing this video.

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