Comparative Analysis of Concrete Performance with Replacing Sand with Granite and Marble Dust

It has been evident for the past 15 years that there is less natural sand available. When natural sand is unavailable, there is environmental concern. Some artificial sands are made by crushing rocks such as granite, gneiss, dolerite, and basalt that serve as the source material. Marble and granite dust must be produced similarly to river sand in order to consume additional profits for concrete, and MD/GD must raise the strength of concrete relative to products made with an identical amount of river sand without decreasing the workability. The usage of MD & GD in civil construction projects is beneficial for a variety of tasks like building roads and manufacturing building components and materials like light aggregates and bricks/tiles. Our study offers the findings of experimental research on "Quarry sand" as well as the specifics of concrete made with Quarry sand. When the M30 Grade of concrete with and without Granit Dust and Marble Dust is subjected to tests for Compressive Strength, Flexural Strength, Split Tensile Strength, Bond Strength, and Stress Strain Curve at 28 days of curing. Granit dust and marble dust were added to conventional concrete in amounts of 15%, 25%, 40%, and 50% for M30 grade, and their strength was tested as a partial replacement for sand. According to the discussion, the maximum strength is obtained when 15% of the sand is replaced by granite dust. However, when 25% of the sand is replaced by marble dust, the maximum strength is obtained at that point, but when 25% of the sand is replaced by granite dust, the compressive strength is slightly reduced. Therefore, it is evident that good quality concrete may be produced when sand is 25% replaced by granite and marble dust. When compared to the reference mix with a 0% replacement of natural sand, all the concrete produced by substituting marble and granite dust reveals better strength.