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Apart from structural wood preservation measures, there are a number of different chemical preservatives and processes (also known as timber treatment, lumber treatment or pressure treatment) that can extend the life of wood, timber, and their associated products, including engineered wood. These generally increase the durability and resistance ...
Wood does not deteriorate simply because it gets wet. When wood breaks down, it is because an organism is eating it. Preservatives work by making the food source inedible to these organisms. Properly preservative-treated wood can have 5 to 10 times the service life of untreated wood.
The wood from the southern yellow pines typically has a density value between 50 and 55 lb/cu ft (0.80 and 0.88 g/cm 3) when pressure treated. Yellow pine grows across the South and Mid-Atlantic regions, from Texas to New Jersey. [7] [8]
The mixture is infused into wood at high pressure. [4] In the treated wood, arsenic is believed to be in the form of chromium (III) arsenate CrAsO 4 and/or copper(II) arsenate Cu 3 (AsO 4) 2, or fairly stable chromium dimer-arsenic clusters. [4]
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Wood and structural parts were sent from Austria, resulting in unnecessary challenges, such as intercontinental shipping delays and added costs, that could have been avoided by using domestic steel.