On February 21st I was the opponent of Magdalena Rajczakowska in the public defense of her PhD thesis on "autogenous self-healing of cementitious materials" in Lulea, Sweden. A Dr-title was the result. This had to be celebrated with a lot of cakes.
![](https://primary.jwwb.nl/public/g/n/b/temp-xyejwdmbmebektllxyfp/pyur4n/e197f83d-e1a2-4be7-9d20-b04edb161d76.jpg?enable-io=true&enable=upscale&crop=1024%2C2048%2Cx0%2Cy0%2Csafe&width=244&height=488)
On February 21st I was the opponent of Magdalena Rajczakowska in the public defense of her PhD thesis on "autogenous self-healing of cementitious materials" in Lulea, Sweden. A Dr-title was the result. This had to be celebrated with a lot of cakes.