Tensioning methods are one of the most important processes in the production of prestressed reinforced concrete. This method allows to significantly increase the strength characteristics of structures, increasing their resistance to external loads. In modern construction various methods of tensioning are used, but one of the most reliable and widely used is the mechanical method of reinforcement tensioning.
Mechanical method of tensioning reinforcement
The mechanical method of tensioning reinforcement is based on the use of special devices such as hydraulic or screw jacks. The tensioning process goes through several consecutive steps:
1. Fastening of the reinforcement - reinforcement bars are fixed in special supports of the mould or stand where the tensioning will be produced.
2. The force of tensioning - using a hydraulic or mechanical jack, the reinforcement is stretched to the specified tension.
3. Locking the tension - the stretched reinforcement is held in tension, after which the concrete is poured.
4. Transfer of stress to concrete - Once the concrete has reached the required strength, the tension of the reinforcement is released, resulting in the transfer of compressive stress to the concrete structure.
Due to this process, prestressed concrete acquires higher strength characteristics, becomes more resistant to tension and loads, which significantly increases the service life of such structures.
Advantages of the mechanical method of tensioning
The mechanical method has several key advantages that make it in demand in construction:
- High precision tension control. The use of hydraulic jacks allows precise adjustment of the applied force, which guarantees uniform distribution of stresses in the reinforcement and, consequently, in the concrete structure.
- Versatility. This method is suitable for different types of reinforcement and reinforced concrete products, making it suitable for a wide range of construction tasks.
- Reliability of the process. The use of the mechanical method minimizes the likelihood of human error, ensuring consistent tensioning quality.
- Increased durability of structures. Prestressed reinforced concrete created using this method demonstrates high resistance to loads, which is especially important in the construction of bridges, tunnels, buildings and other critical facilities.
The modern mechanical method of reinforcement tensioning remains one of the most effective ways of creating prestressed reinforced concrete structures. Its reliability, precision and versatility make it the optimal choice for modern construction. Thanks to this method it is possible to significantly increase the strength and durability of reinforced concrete products, ensuring their resistance to external influences and operational loads.