Types of Joints in Concrete | What is Construction Joints in Concrete |

Concrete joints are used to control cracking in concrete and to accommodate movements caused by temperature changes, shrinkage, and moisture changes. Here are some common types of concrete joints:
Expansion joints: These joints are used to accommodate the movement caused by temperature changes or shrinkage in large concrete structures such as bridges, dams, and airport runways. Expansion joints are usually made of compressible materials such as rubber or neoprene.

Construction joints: These joints are formed when concrete is poured in two or more stages. They are used to connect the different sections of concrete and allow for a continuous pour.

Contraction joints: These joints are used to create weakened planes in the concrete to control where the concrete will crack. Contraction joints are typically made by sawing or tooling a groove into the surface of the concrete.