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An end to corrosion with glass fibre rebars

by Rana Jimaa on May 14, 2011


Managing Director of Schoeck ME, Dipl.-Ing. Christoph Spitz
Managing Director of Schoeck ME, Dipl.-Ing. Christoph Spitz
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Newly developed glass fibre reinforcing bars could mean an end to damaged steel often caused by the hot and humid climate in the region.

Corrosion is often a problem in reinforced concrete structures; however the glass fibre reinforcing bars made by German company Schoeck Bauteile GmbH,may mean the longer life span of concrete structures, in addition to lower maintenance costs which may be required as early as ten years after going into service.

The large fibre content and linear alignment of the fibres are achieved at the pultrusion stage, the manufacturing process that produces continuous lengths of reinforced polymer structural shapes. Helical ribs are also cut into the hardened bars to insure an optimal bond between the rebars and the surrounding concrete.

“We believe that this is an ideal solution to the woes of many developers, designers and engineers in this region and we are fully committed to serving this region to an international standard,” said Managing Director of Schoeck ME, Dipl. Ing. Christoph Spitz.

The fibre bars can also be installed in tunnelling projects, and in infrastructure projects such as rail ways due to its electromagnetic properties.
 


FEATURED COMMENT

What is the product performance in a fire such as overpass/bridge/support or a building fire rating?

  5 Comments


Readers' Comments


Douglas Pearmain (May 24, 2011)
Carmel
USA

Glass Fibre rebars
What is the product performance in a fire such as overpass/bridge/support or a building fire rating?

Ketan Bajaj (May 20, 2011)
Saharanpur
India

functionally graded materials
functionally graded materials used in structural engineering

Collins McKay (May 19, 2011)
New Orleans
USA

Glass fiber rebars
A past professor of mine researched the use of glass fiber reinforced rebar back in 1984. This is not a new idea recently put on the market and I would be skeptical of it. Of course any non-corroding reinforcement would be better than structural steel, if (a big IF) they matched in structural performance, service life and cost. This has not happened yet. My recollection of glass rebar is the inherent creep properties of glass lessen the long-term strength of a member in constant bending stress. Stainless steel has not been used due to its more brittle nature and significantly greater cost. The MMFX rebar seems to be a good product that is high strength and less corroding due to specific alloying. It is being used in Florida to restore the beachfront condominium balconies that have severly deteriorated from rebar corrosion and subsequent spalling of the concrete.

Husni (May 18, 2011)
Corrosion inhibitor
There are durable products that are designed to repel the uptake of water and chlorides. The passivation of iron surface is well protected and preserved. To be honest, I don't know the durability of glass fibre.

Terje F. R?nning (May 16, 2011)
Brevik
Norway

Glass fibre rebars - durability
Has the long term durability of the glass fibre & resin at the high pH level finally been demonstrated - this was the main problem so far ?


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