TendonThe systemThe strand anchor comprises a part contained in a bore hole (anchor body) and an external part (anchor head) that connects to the structure.

The anchor body is bonded to the ground by injecting a cement-based grout. The grout is injected through an additional injection system mounted on the corrugated sheath.

The Freyssinet strand anchor comprises a bundle of prestressing strands.

TypeYield

strength (N/mm²)

Ultimate strength (N/mm²)

Cross section(mm²)

Strand Weight(kg/m)

Ultimate load

Fpk (kN)

Yield loadFp0,1%

(kN)

Young modulus (kN/mm²)

2T15.3 2x0.6"

1.640 1.860

280 2.18 520 458

~196

3T15.3 3x0.6" 420 3.27 780 6874T15.3 4x0.6" 560 4.36 1.040 9165T15.3 5x0.6" 700 5.45 1.300 1.1456T15.3 6x0.6" 840 6.54 1.560 1.3747T15.3 7x0.6" 980 7.63 1.820 1.6038T15.3 8x0.6" 1.120 8.72 2.080 1.8329T15.3 9x0.6" 1.260 9.81 2.340 2.061

10T15.3 10x0.6" 1.400 10.9 2.600 2.29011T15.3 11x0.6" 1.540 11.99 2.860 2.51912T15.3 12x0.6" 1.680 13.08 3.120 2.74813T15.3 13x0.6" 1.820 14.17 3.380 2.9772T15.7 2x0.62"

1.640 1.860

300 2.36 558 492

~196

3T15.7 3x0.62" 450 3.54 837 7384T15.7 4x0.62" 600 4.72 1.116 9845T15.7 5x0.62" 750 5.90 1.395 1.2306T15.7 6x0.62" 900 7.08 1.674 1.4767T15.7 7x0.62" 1.050 8.26 1.953 1.7228T15.7 8x0.62" 1.200 9.44 2.232 1.9689T15.7 9x0.62" 1.350 10.62 2.511 2.214

10T15.7 10x0.62" 1.500 11.80 2.790 2.46011T15.7 11x0.62" 1.650 12.98 3.069 2.70612T15.7 12x0.62" 1.800 14.16 3.348 2.95213T15.7 13x0.62" 1.950 15.34 3.627 3.198

Stronger tendons are available upon request. The service load depends on the applicable standard.

Permanent strand anchor type A2Ov

er le

ngth

(Slg

)Fr

ee le

ngth

(Lgl

)Bo

nd le

ngth

(Lgs

)

Anchor head

Corrugated plastic sheath

Strands greased and sheathed

Filling pipe

Bare strands

Anchor foot

Spring basket (every 2 meters)

Technical data sheet reference n°: FT En C IX 1 1 1

FT E

n C

IX 1

1 1

- v1

- 03

/13Slope stabilization under bridge foundation

• CE anchor head• Reliable• Sustainable

Retaining walls, slope stabilization, anchoring

TransportationOn delivery, anchors are generally wound. They can be hanged on a recoverable metallic frame,

or on a lost wooden support or pallet, best solution for transport in containers or on long distance.

InstallationAn uncoiler can be sent to the site to allow the anchors to be quickly and safely installed.

Tensioning and testingSpecific hire equipment is available for tensioning and testing the anchors. Freyssinet also offers on-site technical assistance for tensioning and testing. Where tensioning and testing are performed by Freyssinet, a report is issued for each anchor to confirm compliance with the applicable standard.

Quality insuranceA conformity certificate is sent with each delivery.

Freyssinet uncoiler

Example of report

Permanent strand anchor type A2

Across the free length, the strands are individually covered by a PE sheath and greased. The strands are contained in a plastic corrugated sheathing. A filling pipe installed among the strands allows the internal injection of the sheathing with a cement grout when the anchor is installed in the bore hole. The injection of the external bonding cement grout is done through an injection system installed outside the sheathing. On the bond length, spring baskets, installed every 2 meters, ensure a minimum grout cover of 10 mm.

Anchor body type A2

Anchor heads

D (mm)2T15 603T15 654T15 805T15 806T15 807T15 808T15 1009T15 10010T15 10011T15 10012T15 10013T15 114

External diameter of the anchor (excluding injection system)

Spring basket

Injection pipes (optional)

Plastic corrugated sheathing

Cross-section of the bond length

Cross-section of the free length

Freyssinet 1 bis, rue du Petit Clamart - Bât C - 78140 Vélizy-Villacoublay - France • Tel.: +33 1 46 01 84 84 - Fax: +33 1 46 01 85 85 • www.freyssinet.com

All rights reserved by FREYSSINET. Product names are trademarks of FREYSSINET. The information in this document is subject to change. Whilst it is as accurate as possible, it is not in any way binding on FREYSSINET.

Bare strands

Greased monostrands

FT E

n C

IX 1

1 1

- v1

- 03

/13

Standard anchor head

Smooth block

Threaded block

Trumpet tube

Sealing joint

Re-tensionable anchor head

D

He

D

He

e (mm) D (mm) H (mm)2 to 4T15 30 220 1105 to 7T15 35 220 130

8 and 9T15 35 240 18510 to 13T15 50 240 200

External dimensions of the anchor head

The anchor head consists of a bearing plate with a welded trumpet tube, an anchor block, jaws and cap. The trumpet and the cap are filled with grease or wax. For re-tensionable anchor heads, the block is threaded on the outside (to adjust or measure the tensile load). A joint creates a seal between the trumpet tube and the corrugated sheath.

Note: The stated dimensions correspond to a maximum recess diameter of 170 mm. The strength of the concrete bearing surface must be checked separately. If needed, those dimensions can be adapted on request.

Head with angular chair