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Official Journal of the Japan Wood Research Society

Table 1 Conditioning state and WPG (weight percent gain) after all process

From: Solute diffusion into cell walls in solution-impregnated wood under conditioning process IV: effect of temperature on solute diffusivity

Temperature (°C)

Relative humidity (RH) (%)

Kind of salt employed in saturated solution

Diameter of a hole (Fig. 2) d (mm)

WPG after all processes W V (%)a

20

70

Potassium iodide (KI)

10.0

39.4b ± 0.3c

17.6

39.6 ± 0.2

34.0

39.6 ± 0.2

35

72

Sodium nitrate (NaNO3)

4.1

39.2 ± 0.1

7.0

39.4 ± 0.2

14.1

39.7 ± 0.2

50

74

Sodium chloride (NaCl)

2.5

39.3 ± 0.1

4.5

38.9 ± 0.2

7.5

39.4 ± 0.2

  1. aMeasured three times
  2. bAverage value
  3. cStandard deviation, affected by the moisture absorbed on the sample until the measurement just after drying in a vacuum over P2O5