Research Article
Optimal Mix Design and Mechanical Properties of Rapid-Hardening Foam Concrete
Table 5
Orthogonal experiment, each group with three specimens, 3-day compressive strength error percentage.
| | Test number | Specimen 1 Compressive strength (MPa) | Specimen 2 Compressive strength (MPa) | Specimen 3 Compressive strength (MPa) | Average compressive strength (MPa) | Percentage of error between specimen 1 and average (%) | Percentage of error between specimen 2 and average (%) | Percentage of error between specimen 3 and average (%) |
| | 1 | 2.5411 | 2.3248 | 2.4685 | 2.4448 | 3.9 | 4.9 | 1.0 | | 2 | 3.1915 | 3.4814 | 2.9016 | 3.1915 | 0.0 | 9.1 | 9.1 | | 3 | 2.8114 | 2.8160 | 2.8160 | 2.8145 | 0.1 | 0.0 | 0.0 | | 4 | 0.3701 | 0.5502 | 0.5836 | 0.5013 | 26 | 9.8 | 16 | | 5 | 0.5021 | 0.4383 | 0.4318 | 0.4574 | 9.8 | 4.2 | 5.6 | | 6 | 0.8869 | 0.8200 | 1.1836 | 1.0018 | 11 | 18 | 18 | | 7 | 1.0592 | 1.0449 | 1.0770 | 1.0604 | 0.1 | 1.5 | 1.6 | | 8 | 1.8627 | 1.5668 | 1.7168 | 1.7154 | 8.6 | 8.7 | 0.0 | | 9 | 1.9988 | 1.7971 | 1.6337 | 1.8099 | 10 | 0.7 | 9.7 |
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