1 Introduction
2 Materials and methods
2.1 Materials
Fine particle | Coarse particle | ||
---|---|---|---|
Screen hole size range (mm) | Content (%) | Screen hole size range (mm) | Content (%) |
<0.212 | 11.5 | <0.5 | 1.9 |
0.212–03 | 9.2 | 0.5–1.0 | 8.5 |
0.3–0.4 | 15.5 | 1.0–1.4 | 11.3 |
0.4–0.6 | 20.9 | 1.4–2.0 | 28.9 |
0.6–1.0 | 39.5 | 2.0–4.0 | 42.9 |
1.0–1.25 | 3.2 | 4.0–6.3 | 5.8 |
>1.25 | 0.2 | >6.3 | 0.7 |
Length (mm) | Length/thickness | Width/thickness | Bulk density (g/cm3) | |
---|---|---|---|---|
S1 | 1.9 (0.8) | 14.9 (3.2) | 2.4 (0.7) | 0.201 |
S2 | 3.9 (1.4) | 16.3 (4.1) | 2.5 (0.9) | 0.192 |
L1 | 12.2 (6.0) | 20.2 (6.1) | 2.6 (1.2) | 0.162 |
L2 | 20.2 (6.9) | 21.4 (6.3) | 2.8 (1.1) | 0.150 |
2.2 Sample preparation
2.3 Methods of testing
3 Results and discussion
3.1 ANOVA analysis
Variable | Tensile modulus | Tensile strength | Flexural modulus | Flexural strength | Impact strength |
---|---|---|---|---|---|
Wood particle size | <0.0001*
| <0.0001*
| <0.0001*
| <0.0001*
| 0.0002*
|
Cross-section size | <0.0001*
| <0.0001*
| 0.0147*
| <0.0001*
| <0.0001*
|
Wood particle size × cross-section size | 0.9883ns
| 0.6005ns
| 0.3388ns
| 0.0388*
| 0.9120ns
|
3.2 Effect of particle size
Wood particle size | Tensile modulus (MPa) | Tensile strength (MPa) | Flexural modulus (MPa) | Flexural strength (MPa) | Impact strength (kJ/m2) |
---|---|---|---|---|---|
S1 | 5290a
| 35.2a
| 4930a
| 58.5a
| 10.6a
|
S2 | 5470ab
| 37.0a
| 5110ab
| 63.3a
| 11.7b
|
L1 | 6210c
| 42.2b
| 5720c
| 74.4b
| 12.1b
|
L2 | 5850bc
| 38.3a
| 5480bc
| 69.3b
| 12.3b
|