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The company Freyssinet possess all the modern prestressing technologies, which are used in the construction of bridges, viaducts, buildings and numerous other facilities. Freyssinet constantly improves and updates its own products and technologies.
Depending on type of use, we can divide prestressing into:
The C-range prestressing system is designed and certified for a wide variety of applications:
use of 13mm and 15mm strands of all grades (1,770 or 1,860 MPa), including galvanised strands or greased sheathed strands;
prestressing units holding up to 55 strands.
The system can be used in internal or external prestressing for concrete, steel, timber or brick structures.
Freyssinet has also European Technical Approval (ETA) No. 06/0226 for its prestressing process comprising anchor C for 3 to 55 strand tendons (ETA - 06/0226).
Both systems are designed for tensioning floor slabs, ground slabs, as well as transversal tensioning of wider bridge decks and tensioning cylindrical shapes fluid reservoirs - tanks.
Main benefits:
As well as:
- larger slab spans require fewer columns, providing great freedom in terms of layout;
- depending on slab type, elimination of soffits or reduced floor thicknesses. The saving in height thus obtained can result in an increase in the number of storeys in the structure;
- savings in materials (concrete and steel);
- foundations are smaller and simpler;
- shorter lead times due to fast installation.
As well as:
- elimination of deflection in routine service;
- reduction in number or even elimination of slab contraction joints and floor expansion joints;
- better control of shrinkage cracking for improved watertightness and hence greater durability.
Prestressing bars from high strenght alloyed steel.
Freyssinet H1000 stay cable is a parallel strand system for use in light structures. Applications include stay cables and hangers for footbridges, arch bridges, suspended roofs and other cable structures. The H1000 colored cable sheath provides a slender cable that meets the expectations of architects for light structures while the parallel strand technology ensures an unmatched durability, making H1000 a sustainable technology.
Unlike H1000 is system H2000 designed to significantly higher loads which occur on long span stay cable bridges. It can be used in the construction of high-rise towers, or similar structures.
H2000 system, was successfully used by Freyssinet Adria the Millennium Bridge over the River Morača in Podgorica (Montenegro).
Some of the biggest bridges and viaducts in the world have also used this system:
H2000 system, was successfully used by Freyssinet Adria the Millennium Bridge over the River Morača in Podgorica (Montenegro).
Some of the biggest bridges and viaducts in the world have also used this system:
- the third bridge over the Bosphorus in Istanbul (span 1408 m);
- the bridge Rion-Antirion in Patras, Greece, and the famous;
- Millau viaduct in France.
