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My old boss in Phoenix insisted on a 5-inch slump for everything, but I switched to a 3-inch slump on flatwork last year.
He said the wetter mix was easier to finish, but I was always fighting bleed water. The stiffer mix sets up cleaner for me now, especially in the heat. What slump do you guys run for driveways?
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james99511d ago
My uncle's crew in Tucson swears by a 3.5-inch slump for their driveway jobs. They say it's the sweet spot for workability without the bleed water.
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eva66611d ago
Yeah, that old-school thinking gets you in trouble. I had the same fight with bleed water on a big pour last summer, it was a mess. Switched to a 4-inch slump and it was a night and day difference, held its shape so much better. Why make it harder on yourself if the stiffer mix finishes cleaner?
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