Angle grinders are fine for making exact cuts but in the end you need the stuff broken up in chunks so you can get rid of it. The angle grinder doesn’t help with that. Also the hammer drill might break things up into too small of pieces and take too long.
Can an angle grinder cut concrete slab?
Concrete cutting is a common task at the construction area, such as cutting concrete floor, concrete wall, concrete slabs and concrete pavers. Although the various concrete cutting saw is available, an angle grinder is the most convenient tool for small concrete cutting work.
Which is the most suitable tool for breaking up concrete?
Jackhammer. If you have a massive slab of concrete that is thicker than a few inches, working with a jackhammer is your best bet. The tool can break up the material by using a high-powered pointed chisel. You can decide which type of jackhammer suits your application based on its abilities, availability and price.
Can you cut concrete with a hammer drill?
The best drill for concrete today is one of two tools: A hammer drill or a rotary hammer.
Can you use an angle grinder for concrete?
An angle grinder can be used to level, smooth and polish concrete by grinding it down. They can also be used to remove paint and floor adhesives. To grind concrete with a angle grinder you need a diamond cup wheel, a dust shroud attachment, and a vacuum cleaner.
How do you break up a thick concrete slab?
Start to break the concrete, starting six inches from the edge and working your way in. For slabs less than four inches thick, use a sledgehammer. For more than four inches thick, use a demolition hammer.
What drill is best for concrete?
hammer drill
The preferred tool for drilling into concrete is a hammer drill.
What is the best way to grind concrete?
Quote from Youtube video: Our tool it almost goes without saying but if you're gonna grind concrete floors you need an angle grinder. This is finds W sg7 it's a four and a half inch angle grinder.
How well do concrete grinders work?
A grinder can take off up to 1/8 of an inch of material with each pass — less than a concrete scarifier, which cuts into surface coatings and the underlying concrete and can cut about 1/4 of an inch with each pass.
How do you cut concrete slab?
Use a standard circular saw, equipped with a corundum or diamond blade, for small tasks. For slabs, it’s best to cut through the top inch, then use a sledgehammer to break off the rest. The jagged edge left below the cutting line provides a good rough edge for the new concrete to bond to.
How long will a diamond blade last cutting concrete?
between 12 and 120 hours
Diamond blades usually cost between $15 and $75. They can last between 12 and 120 hours of continuous use, depending on the quality of the blade and material they’re used to cut.
How do you reduce dust when cutting concrete?
Wet Cutting (Water Spraying) – This engineering control helps to eliminate silica dust from ever becoming airborne and is the most efficient method of dust control in concrete cutting and grinding.
When should I cut my concrete slab?
Timing for Cutting Concrete
The timing varies according to local conditions, but typically saw cuts can be done 4 to 12 hours after the concrete has been finished. In hot weather early-entry dry-cut joints are cut 1 to 4 hours after finishing; they’re not cut as deeply as conventional cuts.
How deep should you cut concrete?
A good rule of thumb is to cut the joints one-quarter to one-third the slab thickness. For a 6-inch-thick slab, that means cutting 1 1/2 to 2 inches deep. Ensure that the saw cut depth meets the structural engineering specifications.
How many times do you float concrete?
Push the bull float in one direction only across the concrete, keeping its front edge slightly above the surface by raising or lowering the handle. Two or three times is enough. Don’t overwork the concrete or you’ll weaken it by drawing too much sand and cement to the surface.
How often should you cut concrete?
Cuts should be approx. 2-3 times the thickness of your slab in feet. For example, a 6” slab would have cuts 12′ – 18′ apart. This is strictly a guideline to work from.
Are hairline cracks in new concrete normal?
Yes, in about a month, hairline cracks should subside. While shrinkage cracks can show up on the surface within hours of having concrete poured, it takes a full month for new concrete to fully settle. Don’t be surprised if cracks that seemed visible at first are nearly impossible to see after a month of settling.
What should I put between concrete slabs?
An expansion joint is a material placed in the cracks (or joints) between concrete slabs to protect the slabs from cracking when they contract and expand as the temperature changes. This material acts as a shock absorber, absorbing the stress from the slab’s movement.
