Construction Precautions for Embedded Waterstop in Deformation Joints

During the construction of embedded waterstops in deformation joints, issues often arise:

It’s hard to vibrate the concrete under the top and bottom plate waterstops. This makes it tough to get rid of air bubbles. Also, concrete may shrink during curing. This can cause gaps between the waterstop and the concrete beneath it. It may lead to leaks in the deformation joint. This will effectively eliminate such risks.

During the installation of embedded waterstops, workers pour one side of the concrete first. This means the waterstop splits the end formwork into two parts. As a result, it makes fixing the formwork more difficult. The regulations state that the end formwork must be firmly supported to prevent leakage. If the end formwork is not stably supported during construction, it may leak. It may also cause insufficient compaction of the concrete at the deformation joint. This is due to a fear of not following the specifications. These issues may cause seepage.

Thirdly, the joints of the waterstop are usually its weak points. So, we should minimize the number of joints to improve its waterproofing. The project’s varying scales mean the joint lengths differ. Therefore, there are no strict limits on the number of joints.

Finally, the corners of the waterstop prohibit forming right angles. Thus, the regulations require this area to be an arc to allow for the easy installation of the waterstop.

We hope this content helps you understand the potential issues.