
Effect of Sand Content on the Workability and Mechanical ...
· Concrete Mixtures. Fifteen concrete mixes were prepared and classified into three groups based on the following designed compressive strength (( f_{cd} )): Lgroup for ( f_{cd} ) of 18 MPa, Mgroup for ( f_{cd} ) of 24 MPa, and Hgroup for ( f_{cd} ) of 35 each group, lightweight fine aggregates were replaced by using the natural sand from 0 to 100% at an interval of 25%, as ...