Research Article

Design of Normal Concrete Mixtures Using Workability-Dispersion-Cohesion Method

Table 2

Properties of fine aggregate used in the mix.

Classification FA1FA2FA3FA4
Local nameDesert SandWadi SandSuwaileh SandSilica Sand
Specific gravity2.56–2.712.63–2.792.48–2.602.49–2.56
% age of samples lying outside ASTM grading limits15% (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 limitsNone3% (all above the coarser limit)5%3% (all below the finer limit)
Fineness modulus2.24–2.562.46–3.151.94–2.281.59–2.14

Percentage of samples falling outside the standard limits when tested for grading requirements.