When looking at England’s coastline, we talked about how it needed protecting against erosion from the sea. We planned an investigation to test what concrete mixture was the strongest and, today, we tested them.
We placed our samples into bags and labelled them with the ratio of cement:stones:sand used to make it.
We donned our coats and braved the bad weather. We agreed to drop each sample at 10cm intervals and see which broke last and, therefore, was the strongest.
Lots were so strong that they didn’t break even when we were dropping them from 2m! So, we found the highest point we could get to in our school and dropped them from there…
Some still didn’t break. We decided this was a good thing as it means our coastlines are protected by a very strong material.