Table 4 Color difference values before and after epoxy reinforcement
Sample | Proportion | Before reinforcement (ΔE) | After reinforcement (ΔE) | δ(ΔE) |
|---|---|---|---|---|
Blank | Blank | 66.30 | 66.30 | 0 |
1 | 5:1 | 62.70 | 70.30 | 7.6 |
2 | 5:1 | 66.70 | 64.60 | 2.1 |
3 | 5:1 | 60.90 | 58.3 | 2.6 |
4 | 4:1 | 64.00 | 74.40 | 10.4 |
5 | 4:1 | 60.50 | 76.50 | 16 |
6 | 4:1 | 61.40 | 72.1 | 10.7 |
7 | 3:1 | 56.90 | 80.20 | 23.3 |
8 | 3:1 | 54.70 | 79.00 | 24.3 |
9 | 3:1 | 55.70 | 54.4 | 1.3 |
10 | 2:1 | 53.70 | 80.00 | 26.3 |
11 | 2:1 | 63.50 | 79.90 | 16.4 |
12 | 2:1 | 58.80 | 71.1 | 12.3 |
13 | 10:1 | 54.30 | 75.9 | 21.6 |
14 | 10:1 | 53.70 | 74.3 | 20.6 |
15 | 10:1 | 62.20 | 69.9 | 7.7 |
