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  2. Alkaline copper quaternary - Wikipedia

    en.wikipedia.org/wiki/Alkaline_copper_quaternary

    The copper in ACQ treated wood accelerates corrosion of galvanized steel fasteners (such as nails and screws) 10 times or more in comparison with CCA-treated wood. Stainless steel (AISI 316) is not affected. [7] Aluminium and Galvalum fasteners should be avoided. [8] One should use fasteners made of hot-dipped galvanized steel, copper, or ...

  3. Chromated copper arsenate - Wikipedia

    en.wikipedia.org/wiki/Chromated_copper_arsenate

    Chromated copper arsenate ( CCA) is a wood preservative containing compounds of chromium, copper, and arsenic, in various proportions. It is used to impregnate timber and other wood products, especially those intended for outdoor use, in order to protect them from attack by microbes and insects. Like other copper-based wood preservatives, it ...

  4. Wood preservation - Wikipedia

    en.wikipedia.org/wiki/Wood_preservation

    The American Wood Protection Association (AWPA) standards for PTI require a retention of 0.018 lb/cu ft (0.29 kg/m 3) for above ground use and 0.013 lb/cu ft (0.21 kg/m 3) when applied in combination with a wax stabilizer. The AWPA has not developed a standard for a PTI ground contact preservative, so PTI is currently limited to above ground ...

  5. ISPM 15 - Wikipedia

    en.wikipedia.org/wiki/ISPM_15

    ISPM 15. International Standards For Phytosanitary Measures No. 15 ( ISPM 15) is an International Phytosanitary Measure developed by the International Plant Protection Convention (IPPC) that directly addresses the need to treat wood materials of a thickness greater than 6mm, used to ship products between countries.

  6. Oriented strand board - Wikipedia

    en.wikipedia.org/wiki/Oriented_strand_board

    Oriented strand board. OSB is easily identifiable by its characteristic wood strands. Oriented strand board (OSB) is a type of engineered wood similar to particle board, formed by adding adhesives and then compressing layers of wood strands (flakes) in specific orientations. It was invented by Armin Elmendorf in California in 1963. [1]

  7. A Fingerprint Taken From Stonehenge Changes Everything We ...

    www.aol.com/fingerprint-taken-stonehenge-changes...

    By studying the age and chemistry of mineral grains within fragments of the six-ton Alter Stone—a thick sandstone block measuring 16 feet by 3 feet in the center of the iconic Wiltshire circle ...

  8. Composite lumber - Wikipedia

    en.wikipedia.org/wiki/Composite_lumber

    Most composite deck board manufacturers produce lengths of 12, 16, or 20 feet (3.7, 4.9, or 6.1 m), 5 + 1 ⁄ 2 by 3 ⁄ 4 inch (140 mm × 19 mm). Manufacturers of capped composite boards will often leave one side uncapped to prevent the material from expanding and mushrooming out of the corners of the boards.

  9. Thermally modified wood - Wikipedia

    en.wikipedia.org/wiki/Thermally_modified_wood

    Thermally modified wood is engineered wood that has been modified by a controlled pyrolysis process of wood being heated to (> 180 °C) in an oxygen free atmosphere. This process changes to the chemical structures of wood's cell wall components lignin , cellulose and hemicellulose which decreases its hygroscopy and thus increases dimensional ...

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