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Update: found out my slump test was garbage after a guy in Fresno called me out
I've been testing slump the same way for about 6 years, and last Tuesday a batch plant guy named Duane watched me do it on a driveway pour in Fresno. He asked why I was setting the cone on the grass instead of a flat plate, and I didn't have a good answer. Turns out the base was sinking a little every time, so my readings were coming out low and I was adding water I never needed. We redid it on his steel plate and got almost 3/4 inch more, which changed how we finished the whole pour. What's the dumbest habit you picked up early and didn't catch for years?
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xena_allen1h ago
Man, that sinking base thing is sneaky cause you'd never notice it by eye. Glad Duane caught it before you finished the pour, sounds like it saved you a real mess. We all got at least one of those habits floating around.
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