Rebar and steel strands tensioning in the production of reinforced concrete products is an important operation that helps to ensure the strength and durability of the prestressed concrete products.

In this article, we will look at the basic principles of tensioning reinforcement in the production of reinforced concrete. Before you begin tensioning a rebar and steel strands by hydraulic jack, you must make sure that its positioning and quality meet the requirements of the project. The rebar and steel strands should be accurately positioned and have sufficient adherence to the concrete. It is also important to ensure that the rebar and steel strands is not damaged, has cracks or other flaws that could affect its strength.

Once the rebar has been checked and is ready to be tensioned, the next step is to install the jack. The jack for tensioning the rebar and steel strands should be positioned so that its axis coincides with the axis of the tensioner. The jack must be secured. The next step is to begin tensioning. It is important to watch the gauge reading during the tensioning process. The hydraulic gauge helps to monitor the tension of the fitting and make sure that it meets the specified parameters.

After a rebar and steel strands has been tensioned, the tension of the rebar and steel strands should be checked to ensure that it meets the design requirements.

This can be done using special tools, such as deflectometers, which allow to measure the deviation of the reinforcement from the specified position. If the deviation exceeds the permissible values, additional tensioning must be carried out.
It is important to note that the tensioning of rebar and steel strands with a jack is a complex and responsible process that requires experience and professional skills. Failure to comply with the rules of tensioning reinforcement can lead to serious consequences, such as the destruction of reinforced concrete structures.

In conclusion, it can be said that the tensioning of reinforcement with a jack is an integral part of the production of reinforced concrete products. To ensure high strength and durability of the finished products, it is necessary to carry out the tensioning of the reinforcement in accordance with all the requirements and rules of technology. TDM Engineering Oy has a large selection of tensioning jacks. We offer equipment to solve any problem in the production of reinforced concrete products.