> ... going into detail about why cement mixers need to keep rotating so the cement doesn’t harden prematurely
Not to be the well ahkshually guy, but they rotate to keep the cement homogenized. It's a suspension of heavier and lighter materials of varying grain size. If you stop rotating it in transit you dont risk premature hardening so much, it's more that the concrete unmixes.
Even with a spinning container you need to pour it out asap. Can't keep it around for hours and hours.
Can vouch. Used to work in construction and cement hardening is a chemical process much more than it is a mechanical/moisture evaporation process. That shit will solidify on you no matter what you do unless you get it settled where it needs to be as soon as possible. I've also seen concrete harden just fine inside a form while under water, thoroughly exposed (but without dilution) to the sea water leaking throughout the plywood form.
Not to be the well ahkshually guy, but they rotate to keep the cement homogenized. It's a suspension of heavier and lighter materials of varying grain size. If you stop rotating it in transit you dont risk premature hardening so much, it's more that the concrete unmixes.
Even with a spinning container you need to pour it out asap. Can't keep it around for hours and hours.