Joints should be sawed as soon as the concrete can withstand the energy of sawing without raveling or dislodging aggregate particles. For most concrete work, cutting should take place within the first 6 to 18 hours and never beyond 24 hours.
Can old concrete be cut?
Cutting concrete used to be an arduous job, relegated to professional contractors, but thanks to advancements in tools, blades, and techniques, now almost anyone can cut slabs, walls, or concrete blocks with precision.Aug 27, 2021
Does a concrete slab need to be cut?
A good rule of thumb is to cut the joints one-quarter to one-third the slab thickness. 2 For a 6-inch-thick slab, that means cutting 1.5 to 2 inches deep.Nov 12, 2021
Should I saw cut my concrete?
Joints should be sawed as soon as the concrete will withstand the energy of sawing without raveling or dislodging aggregate particles. For most concrete mixtures, this means sawing should be completed within the first six to 18 hours and never delayed more than 24 hours.
What happens if you don't cut concrete?
In hot weather, concrete might crack if joints are not cut within 6-12 hours after finishing concrete. In this condition, if you don't want to use a grooving tool to cut joints, there are early-entry dry-cut lightweight saws that can be used almost immediately after finishing.Jul 1, 2021
When should I use saw cuts in concrete?
Saw cuts are a used to create control joints in concrete, which help control where cracking occurs due to shrinkage. The cuts should be made at a predetermined spacing and only after the concrete has obtained sufficient strength but before internal cracking begins.Nov 12, 2021