Sawcutting of concrete topping on concrete plank
Sawcutting of concrete topping on concrete plank
(OP)
We have a 2" concrete topping on concrete plank. What is standard practice?
Is advisable to sawcut the topping?
If so would you cut 1/4 of the depth?
What kind of spacing would be used?
Is advisable to sawcut the topping?
If so would you cut 1/4 of the depth?
What kind of spacing would be used?






RE: Sawcutting of concrete topping on concrete plank
RE: Sawcutting of concrete topping on concrete plank
I have never seen this done. The top surface of a precast piece (plank, double T, hollow core, etc) that is to recieve CIP concrete topping is intentionally roughened. The bond between the roughened surface and the topping concrete is quite substaintial. I think even if you cut a control joint in the topping, it would be so solidly bonded to the precast, that the joint would not make much difference as the topping can't move relative to the PC anyway.
RE: Sawcutting of concrete topping on concrete plank
However, at the centerline of supports where plank is butt-jointed, it is advisable to cut a control joint in the topping.
RE: Sawcutting of concrete topping on concrete plank
Spancrete link
See the second bullet on the second page.