Timber absorbent is submerged timber capacity absorbing water, increasing the amount of water mostl

Timber absorbent is submerged timber capacity absorbing water, increasing the amount of water mostly for free. Water-absorption depth in one day pine sapwood cross-section kambrook heater through the fiber direction is 15 mm and the transverse fibers - only 1 mm. Wood hygroscopicity is characterized kambrook heater by its ability kambrook heater to absorb moisture in the air water vapor. Depending on the ambient temperature and humidity, will increase or decrease the humidity of the wood. Any relative humidity and temperature combination meets specified hygroscopic kambrook heater moisture - water-related wood. Such moisture kambrook heater called equilibrium moisture. To dry out the wood to air-dry (15%) patients in the summer +20 C, and the humidity should be less than 78%. Easier to evaporate free water and more difficult - associated water. Bound water in the cell membranes, and its concentration in relation to absolute dry pulp is 30%. Hygroscopic moisture depends on the humidity and temperature, but it never exceeds 30%. This is called the fiber saturation point. The humidity increases, it is deteriorating mechanical properties, electrical conductivity increases and increases cell size. When wood fiber moisture kambrook heater reaches the saturation point, they are no longer on the mechanical properties deterioration, but Swelling and conductivity reaches a maximum value and then increasing. WOOD shrinkage and swelling READ HERE Source: "Timber structures" J.Ulpe; L.Kupce 1991
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