Mining

Belgo Bekaert Arames > Products > Mining > Barras Helicoidais

Barras Helicoidais

DESCRIPTION / FEATURES

This set of helical steel bars, support and reaction plates, and clamping nuts constitutes a rod-like reinforcing element that limits, mitigates and/or reduces fractures in the rock mass. It can be used in underground excavations and slopes; in settings with poor rock mass quality and areas with high reinforcement need; in association with meshes and woven or welded meshes and with projected concrete. They are hot-rolled longitudinally ribbed steel bars, forming a continuous or integral thread for the use of the nut responsible for the torque and activation

BENEFITS / ADVANTAGES

* Large load capacity in rocky massifs;
* Easy-to-install, eliminating the use of robust nut torque adjustment equipment

APPLICATIONS / SOLUTIONS

Underground excavations, embankments or slopes

Specifications and Materials

Barras Helicoidais

 

Aço Resistência Carac. de Escoamento (mín.) Limite de Resistência (mín) Alongamento  em (200)
MPa MPa Ø 19 mm Ø 22 mm Ø 25 mm Ø 32 mm Ø 36 mm
Grade 75 520 690 7% 7% 7% 6% 6%
Grade 100 690 790 7% 7% 7% 6% 6%

 

Aço Dimensões Carga de Escoamento Nominal Carga de Resistência Nominal Área (mm2) Peso nominal (Kg/m)
Grade 75  Kgf Kgf
Ø 19 mm 14456 19182 278 2,140
Ø 22 mm 19552 25944 376 2,955
Ø 25 mm 24648 32706 474 3,720
Ø 32 mm 40352 53544 774 6,078
Ø 36 mm 51064 67758 982 7,710
Grade 100 Ø 19 mm 19182 21962 278 2,140
Ø 22 mm 25944 29704 376 2,955
Ø 25 mm 32706 37446 474 3,720
Ø 32 mm 53544 61304 774 6,078
Ø 36 mm 67758 77578 982 7,710

 

Barra Roscada Dimensões
P P L A B H
Ø 19 10,0 (+/- 0,2) 21,5  (+/- 0,8) 17,7 (+/- 1,0) 3,0 (+/- 0,4) 4,1 (+/- 0,4) 1,6 (+/- 0,2)
Ø 22 11,1 (+/- 0,2) 24,6 (+/- 0,8) 20,6 (+/- 1,0) 3,6 (+/- 0,4) 4,6 (+/- 0,4) 1,6 (+/- 0,2)
Ø 25 12,5 (+/- 0,2) 27,2 (+/- 0,8) 23 (+/- 1,0) 3,6 (+/- 0,4) 6,0 (+/- 0,4) 1,75 (+/- 0,2)
Ø 32 16,9 (+/- 0,2) 34,8 (+/- 0,1) 28 (+/- 1,0) 4,2 (+/- 0,4) 9,1 (+/- 0,5) 2,10 (+/- 0,3)
Ø 36 18,0  (+/- 0,4) 39,8 (+/- 0,1) 33 (+/- 1,0) 5,2  (+/- 0,7) 9,5 (+/- 0,5) 2,10 (+/- 0,7)

 

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