Ertugrul Gazi Mah. Sehitler Cad. PRESTRESSED CONCRETE ... · PDF file Prestressing concrete...
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Ertugrul Gazi Mah. Sehitler Cad. No: 2 Kartepe, Kocaeli 41180 TURKEY
Tel: +90 (262) 371 12 80 Fax: +90 (262) 371 51 15
www.celikhalat.com.tr [email protected]
OUR RED LINE is quality
P R E S T R E S S E D C O N C R E T E S T R A N D
MEASURES FOR STORAGE
Some of the measures have to be taken during the use of
prestressing concrete steel:
• Prestressing concrete steel is sensitive against intensive
heat sources. Internal structure and mechanical features of
steel may be changed if it is exposed to intensive heating.
• Loading and discharging have to be made in minimum
amounts and corrosion and pressure have to be avoided in
order not to change mechanical features.
• Coils have to be stowed over ground level and they have
to be covered in a way that they allow a good air circulation
in order to avoid condensation.
WHAT IS PRESTRESSING?
Prestressing is to apply constant stress artificially to
structural components before applying external loads.
For the prestressing concrete wires and strands in
various dimensions, types and resistances, which are
produced exclusively, are used.
Prestressing concrete steel elements are produced by
taking stress from high carbon special wire rods with
vanadium alloys after a distinct load and a regular
In prestressed concrete structures the prestressing
applied initially is decreasing in time due to warping and
creep of concrete and relaxation of prestressing steels.
Therefore, the characteristics of the steel defined as steel
relaxation under constant length or loss of stress is one
of the important parameters taking into consideration in
designing of prestressed concrete structures.
Advantages of the products with lower relaxation:
• More tensile and yield strenghts.
• Super durability against fatigue and corrosion.
• Consistent load elongation relation.
• Super straightening feature.
Our products are tested under the latest technology standards by our highly qualified and experienced experts to provide durability, elongation and relaxation features according to the parameters of international standards.
Çelik Halat ve Tel Sanayi A.Ş. started
producing PC Strand in 1986 as the first
mover in Turkey. With new projects and
investments; our company intends to extend
its domestic market leadership to overseas.
PC strand with 7 strands that are used in
the areas such as bridge girder production,
prefabricated construction elements,
ground and mine anchorages, nuclear
power stations, silo constructions, housing
constructions are produced according to the
ASTM, BS, EN, TSE ve JIS standards.
Primary advantages provided by PC Strand:
• Having high tensile strength.
• Potential great prestressing in small edges.
• Less need for anchorage and application
(mm) (in) (Mpa) (Grade) (mm²) (in²) (g/m) (lb/1000ft) (kN) (lbf) (kN) (lbf) 1725 250 51.61 0.080 405 272 89.0 20000 80.1 18000
1860 270 54.84 0.085 432 290 102.3 23000 92.1 20700
1725 250 92.90 0.144 730 490 160.1 36000 144.1 32400
1860 270 98.71 0.153 775 520 183.7 41300 165.3 37170
1725 250 139.35 0.216 1094 737 240.2 54000 216.2 48600
1860 270 140.00 0.217 1102 740 260.7 58600 234.6 52740
Diameter Tensile Strength Cross Sectional Area Mass Per Metre Minimum breaking
Strength Minimum load at 1%
9.53 mm 3/8"
12.70 mm 1/2"
15.24 mm 3/5"
ASTM A416 - SEVEN-WIRE UNCOATED STRAND - LRPC [LOW RELAXATION]