Following are the some kinds of joints we generally use in concrete:
- Control/Contraction/shrinkage joint
- Construction joint
- Isolation/expansion joint
There are three basic techniques used to add control joints to concrete-
Construction joints are installed wherever a concrete pour is in interrupted for some reasons. It may be the end of a day’s work or it may be that some other work needs to be done before resuming the pouring. Construction joints are usually coated with oil to prevent bond with the next pour and located so that they can also act as control joints.
Isolation joints are used to separate new concrete from existing or adjacent construction, which might expand and contract differently or experience different soil settlement or their movement. If the fresh concrete were not separated from these elements by an isolation joint, a crack could form where the two meets.
Do you use concrete joint most often?
In which places do you use concrete joints most?
Which material do you use as jointing material?
Please share your practical ideas…