
Coarse Aggregates.
The strength and structure.
Coarse Aggregates (locally known as Jally) are coarse particulate rock-like material consisting of a collection of particles ranging in size from < 0.1 mm to > 50 mm.
Aggregates are granular materials, such as sand, gravel, crushed stone, crushed cement concrete, used with a hydraulic cementing medium to produce concrete. The aggregate of each type is further sub-divided into many types and classification based on its size. The technique of Sieve Analysis is used for gradation of aggregates for use in concrete and for other applications.
Kadaieswari Coarse Aggregates are obtained by crushing naturally occurring rock from our quarries. They are then crushed at Kadaieswari Crusher Unit where different aggregate sizes are manufactured with the use of Sizing Meshes with the crushers. The advanced filtering machinery (VSI – Vertical Shaft Impactors), filter the aggregates to their specific sizes and the waste materials are recycled for use with other applications. Our Aggregates are then evaluated through tests to determine their suitability for various applications. Mineralogy, grain size and texture, and petrographic description of rock samples are also used to evaluate suitability.
Size Options.
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6mm Jally
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8mm Jally
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12mm Jally
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20mm Jally
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40mm Jally
STRENGTH
HARDNESS
TOUGHNESS
DURABILITY

Uses of Coarse Aggregates.
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In concrete, an aggregate is used for its economy factor, to reduce any cracks and most importantly to provide strength to the structure.
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Aggregates are used as the base, sub-base, and/or surface of roads in several forms
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In roads and railway ballast, it is used to help distribute the load and assist in ground water running off the road.
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Increases the volume of concrete, thus reduces the cost. Aggregates account for 60-75% of the volume of concrete and 79-85% weight of PCC
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Provide dimensional stability
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Influence hardness, abrasion resistance, elastic modulus and other properties of concrete to make it more durable, strong and cheaper.
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Other uses include fills, backfills, and drainage and filtration applications.