Green concrete is a timing problem before it is a cutting problem. Cut too early and the saw ravels the edge, tearing aggregate out of a slab that has not set enough to hold together; cut too late and the slab has already decided where it is going to crack. The MK Diamond MK-610W is the supreme grade wet blade built for that narrow window, and this is the 12-inch size, part number 150616, at .145 inches wide on a 1-inch arbor. Supreme is the top of MK Diamond's three blade grades and carries the highest diamond concentration of the three, which is why MK points it at saws in the 2 to 3 HP class and above.
Built for
- Cut control joints in freshly placed concrete slabs
- Saw green concrete flatwork, driveways and parking decks
- Follow a placement crew on the same day as the pour
- Run wet on saws taking a 12-inch blade and 1-inch arbor
- Handle abrasive, uncured concrete that would glaze a cured-concrete blade
Use cases
The first job is control joint cutting. Control joints are planned cracks - they let drying shrinkage and temperature movement go where you chose instead of wherever the slab decides. That only works if the joint is cut before random cracking starts, which is why green concrete sawing is scheduled around the concrete rather than the calendar.
Getting the timing right is a field judgement, not a fixed number. The rule crews actually use is to make a short test cut in an inconspicuous spot and look at the edge: if the cut is tearing the surface and pulling aggregate, the slab needs more time; cut as soon as the saw stops raveling the edge. Published guidance commonly puts that window within several hours of placement, but mix, temperature and finishing all move it, so the test cut is what decides.
Uncured concrete is far more abrasive than cured concrete, and a blade built for hard, set material will glaze in it. That is the reason for a dedicated green concrete section, and for running it wet - the water clears the slurry that green cutting produces in quantity and keeps the section cool. Confirm your saw takes a 12-inch blade on a 1-inch arbor before ordering.
Specifications
- Manufacturer part number: 150616
- Model: MK Diamond MK-610W
- Blade family: Supreme Grade Blade for Green Concrete
- Diameter: 12"
- Width (kerf): .145"
- Arbor: 1"
- Rim style: segmented
- Use: wet cutting
- Grade: Supreme
- Material: green (freshly placed) concrete
Frequently asked questions
What is green concrete?
Concrete that has been placed but has not fully cured. It is softer and much more abrasive than cured concrete, so it needs a blade with a section built for that condition.
How do I know when the slab is ready to cut?
Make a test cut in an appropriate area and inspect the edge. If the cut disturbs the surface and pulls aggregate, the slab needs more time. The working rule is to cut as soon as the saw stops raveling the edge.
What happens if I cut too early or too late?
Cutting too early ravels the edge and damages the joint. Cutting too late risks the slab cracking on its own, outside the joint you planned, which defeats the purpose of the control joint.
Is the MK-610W wet or dry?
Wet. It is a wet cutting blade, and the water is doing real work here - clearing the heavy slurry green concrete produces and keeping the section cool.
Can I use a cured-concrete blade on green concrete instead?
It is not the right tool. Uncured concrete is far more abrasive, and a blade built for hard cured material will tend to glaze rather than keep cutting.
Discount Cleaning Products is an authorized MK Diamond dealer. Our US-based team works with contractors, masons and stone fabricators every day, so if you are weighing one grade or arbor against another for the saw you already own, ask us before you order and we will help you match the blade to the work.
