Research Article
Design of Normal Concrete Mixtures Using Workability-Dispersion-Cohesion Method
Table 2
Properties of fine aggregate used in the mix.
| Classification | FA1 | FA2 | FA3 | FA4 | Local name | Desert Sand | Wadi Sand | Suwaileh Sand | Silica Sand | Specific gravity | 2.56–2.71 | 2.63–2.79 | 2.48–2.60 | 2.49–2.56 | % age of samples lying outside ASTM grading limits | 15% (most below the finer limit) | 18% (most above the coarser limit) | 65% (all below the finer limit) | 80% (all below the finer limit) | % age of samples lying outside BS grading limits | None | 3% (all above the coarser limit) | 5% | 3% (all below the finer limit) | Fineness modulus | 2.24–2.56 | 2.46–3.15 | 1.94–2.28 | 1.59–2.14 |
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Percentage of samples falling outside the standard limits when tested for grading requirements.
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