> concrete got stronger in sea water whereas we have major problems with modern concrete in sea water
Pure concrete is excellent in water. It also crumbles under light loads. Rebar is excellent under heavy loads. It also oxidises. We can choose either material based on the circumstances. The ancients could not.
Pure concrete is excellent in water. It also crumbles under light loads. Rebar is excellent under heavy loads. It also oxidises. We can choose either material based on the circumstances. The ancients could not.