Why do we need to cut expansion joints on concrete?

Why do we need to cut expansion joints on concrete?

Cutting expansion joints on the surface of concrete is mainly to prevent cracks and deformation in the concrete. Due to changes in temperature, humidity, or load, the volume of concrete can vary. If expansion joints are not installed, concrete may crack or deform due to shrinkage or expansion. Setting expansion joints can provide a certain deformation space for concrete to alleviate the stress caused by deformation, effectively preventing cracks and deformation of concrete; It also facilitates the maintenance and upkeep of concrete. Therefore, when using concrete cutting machine to cut expansion joints on concrete is to ensure its stability and extend its service life.

In JIEHE Company there are many kinds of concrete cutters for your choosing from walk behind saws to automatic saws to cut expansion joints on both concrete and asphalt.

If you are interested in, please contact us sales@jiehechina.com or visit our website www.jiehechina.com.

When is it better to cut expansion joints?

It is best to cut expansion joints before the concrete hardens. In general, cutting expansion joints should be carried out 24-72 hours after the initial setting of the concrete surface to ensure that the concrete has initially hardened and will not produce cracks. At the same time, when cutting expansion joints, weather factors should also be considered. Choose a time when the weather is sunny, the air humidity is low, and the temperature is suitable to ensure that the cut expansion joint lines are clear and neat.

What is the importance of cutting expansion joints?

The importance of cutting expansion joints mainly includes the following points:

1. To avoid thermal expansion and contraction deformation caused by temperature changes in buildings and roads, thereby ensuring the stability and safety of the roads structure.

2. It can effectively prevent cracking, warping, and other situations on the ground of roads, thereby extending the service life of roads.

3. It can alleviate adverse factors such as vibration, noise, and vibration that affect the use of roads and the health of users.

4. Regular maintenance and upkeep can effectively maintain the beauty, cleanliness, and hygiene of roads.

5. The setting of expansion joints can also enable the structure to move freely under heavy loads, vibrations, or deformations, maintaining the stability and safety of the structure. In addition, reasonable setting of expansion joints can also facilitate future maintenance and upkeep.

Therefore, cutting expansion joints is of great significance for the long-term stability and safe use of Roads.