Effects of Separation of Grain Sizes of Fine Aggregate on Properties of Concrete Containing Granite Fines

Abstract

In this study, seven grain size ranges of granite fines were used: 415 - 3.35mm, 3.35 - 2.36mm. 2 36 - 1.70mm, 1.70 - 1.18mm, 1.18 - 0.30mm, 0.30 -0.063mm and 4.75 - 0.063mm (those containing all rain sizes). The properties considered for the investigation are compressive and flexural strengths. density and workability. Four mix proportions of cement, fine and coarse aggregates 1:1/4: 3, 1:2:4, 1:3:6 and 1:0:3 (no fines) by weight were used in the tests. 100mm cubes and 100x 100x 500mm beams were cast and cured in water at 21 + 1°C. The specimens were tested at 7, 14. 21 and 28 days. The results showed that the compressive and flexural strengths and density increased with decreasing grain sizes, while the workability decreased with decrease in grain sizes.