Tips On Concrete Slab Sawing

Posted on: 29 October 2018

When concrete is in large solid slabs, it can become problematic in the future. The concrete will shrink as it dries, and this will lead to uncontrollable cracks in the concrete. Once there are cracks that have developed in the concrete soil that gets wet under the slab will also swell and this can lift the concrete and create more problems that come in the form of lifted areas. Not only are these lifted areas problematic for the rest of the surrounding concrete, but they are also unsightly and will create tripping hazards for anyone walking on the concrete. This is why it's important to have control joints in the concrete slabs. Saw cuts are a common way to create these control joints and this article will explain saw cuts to you.

There are better times to saw cut concrete

There are better times to saw cut concrete if you are going to prevent issues instead of ending up causing them. Cutting the concrete too soon can cause the concrete to experience raveling which is something that happens when the blade of the saw pulls on the aggregate. This leaves you with a weak edge on the concrete which can become an additional problem in the future by leading to broken or chipped concrete.

When you are saw cutting during cooler temperatures, you are going to want to do it 12 hours after the concrete was poured, so it won't still be too soft. When you are saw cutting during warmer temperatures, you are going to want to start about four hours after the concrete has been poured on very hot days. Depending on how warm it is, the number of hours may be moved out further than the four hours done in hot weather. It's best to do a small cut to check and make sure the timing is right. If you notice raveling, then wait a bit and test the concrete again.

There are times when you should go with a professional

If you aren't familiar with sawing concrete cuts, then you really need to hire a contractor. Not only can you cause damage, but it is also dangerous if you aren't used to using the saw. You should also hire a contractor if you aren't going to be able to get to the job at the right time after the concrete was poured. If you are questioning the best places for the joint cuts, a contractor would know right where they go and they should take care of the job for you.

Contact a service, like A & B Concrete Coring Company, for more help.