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Monday, October 26, 2009

Reviewing: NX-SCR Rebar

NXI, using patented manufacturing technology offers NX-SCR rebar, which features a carbon steel core, clad with a stainless-steel outer layer. This pairing provides equivalent corrosive resistance to solid stainless steel and equivalent mechanical properties to optimal Grade 60 (ASTM International Ratings).

It sounds like a great product, providing that adherence between the building core and cladding is obtained.

This technology has been previously tested by different manufacturers. The results were not very successful: a good bonding between the carbon steel core and the stainless-steel outer layer could not be obtained.

If NXI has achieved this bonding, their product must be of great interest when applied to infra structures, tunnels, atomic plants, sea walls and foundation for shore located buildings. Cost will be a factor that must be balanced with undeniable structural qualities.

In a conversation between Val Tuhari, of Construction Advisory Group, and Seth Fisher, NXI, VP, North America, it was revealed that the product must be imported from the U.K. until 2011 when their manufacturing facility will be completed here in the U.S. According to Seth, an average $5,000 per ton would be a fair number to consider and of course would depend on order magnitude.

The price may sound high. But, specific project considerations should balance the financial feasibility.

1 comment:

  1. Reginald Fequiere, M. Sc., P.E.October 30, 2009 at 11:19 AM

    I think there already exists a comparable material that costs much less, see attached presentation of MMFX steel.

    Regards,

    Reggie
    Reginald Fequiere, M. Sc., P.E.

    http://www.iowadot.gov/bridge/ibrc_projects/mmfx_pres.pdf

    ReplyDelete