– How does leftover cement in cement trucks not harden and slowly accumulate in the mixer, essentially clogging it?

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Title says it all; I’m sure a thin layer of cement will be left over after they poor it all, and I would imagine that thin layer would harden and then the next time they use the mixer another thin layer would be leftover and so on and so forth. After a while I would imagine it would accumulate to the point where it renders the mixer unusable.

Why is this not the case?

In: Engineering

41 Answers

Anonymous 0 Comments

I have zero authority on the matter, but I was told that concrete trucks have a barrel of reserve water so that if you hit the time limit the driver can dump the water in. It ruins the batch of concrete but saves the truck.

I also once met a financial planner from the mid West. He built his whole practice on concrete companies….they can only be a max of 45 min drive from each other. He set up and run all their retirement plans. Genius!

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