6 Questions
Which method determines preservative retention in a specific zone of treated wood by attraction or analysis of specified samples?
retention by assay
What measures the amount of water vapor in the atmosphere?
psychrometer
Which preservative leaves the wood surface relatively clean, paintable, and free from objectionable odor after treatment?
oil-borne preservative
What is wood called when it is dried to a relatively constant temperature in a ventilated oven at 103°2 degrees Celsius?
kiln-dried wood
What is the process of softening wood by hot water, steam, or chemical treatment called?
plasticizing
Wood that has had its properties significantly altered by chemical treatment, compression, or treatment with or without heat is called?
modified wood
Study Notes
Preservative Retention
- Determination of preservative retention in a specific zone of treated wood is done by retention by assay.
Measuring Atmospheric Humidity
- A psychrometer is used to measure the amount of water vapor in the atmosphere.
Properties of Preservatives
- Oil-borne preservatives leave the surface comparatively clean, paintable, and free from objectionable odor after treatment.
Wood Drying
- Kiln-dried wood is wood dried to a relatively constant temperature in a ventilated oven at 103°C.
Wood Modification
- Plasticizing is the process of softening wood by hot water, steam, or chemical treatment.
Modified Wood
- Modified wood is wood processed to impart properties quite different from those of the original wood by means of chemical treatment, compression, or treatment with or without heat.
Wood Treatment
- Niggerizing is a process of treating wood with paraffin or a coke-oven coal tar to increase its resistance to acids.
Midterm review questions covering wood preservation and atmospheric measurements. Topics include determining preservative retention in treated wood and measuring water vapor in the atmosphere.
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