COMPORTAMIENTO HIGROSCÓPICO DE LA MADERA DE (Persea Americana VAR. guatemalensis MILL Hass)
HYGROSCOPIC BEHAVIOR OF AVOCADO WOOD (Persea Americana VAR. guatemalensis MILL)
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Water saturated Persea americana wood samples of 20 x 20 x 10 mm were conditioned to 85, 65, 35, 0% relative humidity to determine their swelling and shrinking indexes as well as their main anisotropies. Another group of these wood samples was used to determine humidity desorption and sorption along the hygroscopic range of the wood. The dimensional change of Persea americana wood was from small to very small. Their service movement calculated from the linear swelling index (a) was 1.72 %, which is qualified as small. According to the drying shrinkage anisotropy (Abn = 2.67), it is considered that the biggest risk of possible distortion from moisture change could occur during drying from fiber saturation point to 12 % moisture content. Also, swelling anisotropy (Aq = 2.13) showed that the Persea americana wood can be considered moderately stable when its moisture content changes within the range of 18 to 8 %. Hysteresis values fluctuated from 0.788 to 0.885, with an average value of 0.834 for the relative humidity interval of 30 to 90 %.Keyworks: Persea americana, swelling and shrinkage coefficients, shrinkage and swelling anisotropies, sorption and desorption curves, moisture content equilibrium.
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Fuentes-Talavera, F. J., Silva-Guzmán, J. A., Lomelí-Ramírez, M. G., Richter, H. G., & Sanjuan-Dueñas, R. (2002). HYGROSCOPIC BEHAVIOR OF AVOCADO WOOD (Persea Americana VAR. guatemalensis MILL). Revista Chapingo Serie Ciencias Forestales y del Ambiente, VIII(1), 49-56. http://dx.doi.org/1111