Let's say you construct two cubic boxes (with open tops, and of equal dimensions) and pour concrete into one box (like concrete right after it is mixed), and then you pour water into the other box. You then analyze the total pressure on a wall from each box.
Which box would have a larger outward pressure on the wall. I was thinking that because concrete sticks together, it may end up exerting less pressure on the wall.
Doesn't a calculation for pressure on a wall involve much more than simply "How heavy is the liquid like substance."
I am thinking viscosity must play a very large role here.
Or we could assume that we just built a dam. Would the dam that holds back 50,000 gallons of freshly poured concrete need to be any stronger than a dam that hold backs 50,000 gallons of water?