Official Journal of the Japan Wood Research Society
Table 1 Wood sample characteristics, MCm and crack length
Wood characteristics | Oven-dry density [kg/m3] | Growth ring width [mm] | MCm [%] | Crack length year 2012 [mm] | Replicate number |
|---|---|---|---|---|---|
Coating A | |||||
Low-density | |||||
Heartwood | 329 (18) | 8.0 (1.9) | 17.6 (0.7) | 0 | 1–5 |
Sapwood | 372 (23) | 5.0 (0.7) | 17.3 (0.4) | 0 | 41–45 |
High-density | |||||
Heartwood | 440 (29) | 2.8 (0.8) | 16.0 (0.2) | 0 | 21–25 |
Sapwood | 480 (35) | 1.8 (0.8) | 16.2 (0.2) | 0 | 61–65 |
Coating B | |||||
Low-density | |||||
Heartwood | 327 (14) | 7.8 (2.2) | 18.3 (0.5) | 0 | 6–10 |
Sapwood | 336 (9) | 5.4 (1.5) | 19.0 (0.9) | 0 | 46–50 |
High-density | |||||
Heartwood | 446 (39) | 3.2 (1.6) | 17.2 (0.3) | 0 | 26–30 |
Sapwood | 488 (53) | 1.8 (0.4) | 17.4 (0.5) | 0 | 66–70 |
Coating C | |||||
Low-density | |||||
Heartwood | 332 (17) | 9.0 (1.9) | 18.3 (0.5) | 0 | 11–15 |
Sapwood | 371 (44) | 6.8 (1.3) | 18.2 (1.2) | 0 | 51–55 |
High-density | |||||
Heartwood | 457 (62) | 2.6 (1.3) | 16.8 (0.5) | 0 | 31–35 |
Sapwood | 493 (48) | 2.4 (0.5) | 16.5 (0.7) | 0 | 71–75 |
Coating D | |||||
Low-density | |||||
Heartwood | 326 (17) | 9.4 (0.9) | 21.9 (1.0) | 373 (87) | 16–20 |
Sapwood | 347 (34) | 6.2 (1.9) | 22.4 (1.7) | 575 (587) | 56–60 |
High-density | |||||
Heartwood | 431 (44) | 3.8 (2.0) | 20.4 (0.5) | 905 (338) | 36–40 |
Sapwood | 471 (43) | 1.6 (0.9) | 20.5 (0.5) | 2359 (667) | 76–80 |