Concrete Floor Joints

Often times people think that concrete joints are put in to prevent it from cracking but truth be told they are simply to create a weak point so the concrete can crack in a more controlled manner.

Concrete floor joints.

Saw cutting cuts joints as soon as the concrete is hard enough that the edges abutting the cut don t chip from the saw blade. Concrete joints are used to compensate when concrete expands or shrinks with changes in temperature. A fresh concrete mixture is a fluid plastic mass that can be molded into virtually any shape but as the material hardens there is a reduction in volume or shrinkage. Place joints under walls or under carpet areas.

Contraction control joints are placed in concrete slabs to control random cracking. Expansion joints in concrete floors earth s surface moves and for concrete floors this is a problem. You might also find epoxy concrete repair helpful if you want to. Read about each one to learn how they are used to help control random cracking in concrete slabs floors sidewalks pool decks and driveways.

Early entry saws make a nice clean cut for decorative concrete joints. Our work in polishing and staining concrete floors puts us in the role of working with someone else s crafted surface a poured concrete floor. The pre planned cracks will provide a better finish concrete product and will be formed in specific locations where those cracks could be monitored. Cut joints deep enough cut joints 25 of the depth of the slab.

The concrete company has come and gone. You can t lay a large concrete floor as a solid contiguous block of concrete because over time unsightly cracks will appear across the surface of the floor. As we know control joints more properly according to the american concrete institute contraction joints are essentially planned cracks that allow for movements caused by temperature and moisture changes drying shrinkage. How to cut joints groover tools cut joints in fresh concrete.

Saw cut contraction joints are ideal for decorative concrete because the joint is narrower and cleaner than a tooled joint. Constantly walking on concrete floors is extremely hard on hip sockets. As concrete goes through it s curing process it shrinks as much as 1 2 over 100 which of course will cause it to pull apart resulting in. Concrete expansion joints also referred to as concrete isolation joints.

Concrete joints are normally used to prevent cracks when the concrete shrinks by creating forming tooling sawing and placing joint formers. Joints in polished concrete floors. They have done their work and during the finishing parts of a project it s now our turn to go to work. May 6th 2019.

A 4 thick slab should have joints 1 deep.