The data package was submitted to an AWPA technical committee, and its positive reaction was sent to the general membership which voted in favor of the listing. AWPA is a consensus organization that establishes standards for the wood preserving industry. Its membership consists of preservative manufacturers, treaters, users of treated wood, scientists, academics, and other interested parties.
The Chemonite® treating process can meet requirements for penetration of difficult-to-treat species such as Douglas fir, according to Grady Brafford, senior sales manager at Arch Wood Protection. Brafford explained that, "Douglas fir is a strong, plentiful species - well-suited for use as ties - but not readily treated with other preservatives. Chemonite® ties combine the strength of Douglas fir with effective preservative properties."
Tests of ACZA-treated ties have shown low corrosivity and excellent spike-holding characteristics. The preservative enables wood to resist termite damage and fungal decay, and has been found to reduce flame spread in wood timbers the company notes.