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BU627 The impact of geothermal environments on metals and wood

From $13.50

Product Description

BRANZ conducted field trials in Rotorua to examine how metals degrade in geothermal environments. Different metals showed very different responses. The scope of NZS 3604:2011 Timber-framed buildings requires a 50 m separation from geothermal hot spots. This will not always reduce corrosion rates to a safe range.

Wood discolouration is likely to be the result of copper sulphide forming on/in wood treated with copper-based preservatives.

This bulletin covers:

  • corrosion of mild steel, zinc and copper
  • corrosion of aluminium and stainless steel
  • the performance of aluminium-zinc alloy-coated steel
  • distance effects of corrosion in geothermal environments
  • discolouration of wood.
Product Information
Publication date August 2018
Product type Bulletin
Availability Available
Product code BU627