Research Article
Evaluation of the Performance and Microstructure of Ecofriendly Construction Bricks Made with Fly Ash and Residual Rice Husk Ash
Table 2
Sieve analyses and fineness modulus (FM) for URHA and natural sand.
| | URHA | Natural sand |
Reference
ASTM C33 (%) | | Sieve size (mm) | Percentage of passing (%) | Sieve size (mm) | Percentage of passing (%) |
| | 4.75 (#4) | 99.3 | 4.75 (#4) | 97.8 | 95–100 | | 2.36 (#8) | 84.6 | 2.36 (#8) | 75.9 | 80–100 | | 1.18 (#16) | 65.4 | 1.18 (#16) | 55.3 | 50–85 | | 0.6 (#30) | 50.8 | 0.6 (#30) | 40.5 | 25–60 | | 0.3 (#50) | 29.3 | 0.3 (#50) | 21.3 | 5–30 | | 0.15 (#100) | 11.9 | 0.15 (#100) | 8.3 | 0–10 |
| | FM | 2.6 | FM | 3.0 | — |
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