Like. ~ , u, after it split up and what it looks like. ~ 2. , like. Well, its called concrete but i think the like. Well, its called concrete but i think the most like. Well, its called concrete but i think the most important like. Well, its called concrete but i think the most important thing l like. Well, its called concrete but| i think the most important thing to be aware of is that it isnt really like ordinary concrete as we know it, as engineers and the General Public knows it. 0rdinary Concrete weighs about two and a half times as much as water. This concrete floats on water. It weighs about two thirds of the same amount, so its about a quarter of the weight of ordinary concrete. Its nothing like ordinary, dense concrete. It is also only around 10 as strong as ordinary concrete. Its only got one tenth of the strength. So, its really quite misleading in a sense to call it concrete. Its a different material, although its made with cement and it hardens into a solid like material