Coarse aggregates are particles greater than 4.75mm, but generally range between 9.5mm to 37.5mm in diameter. They can either be from Primary, Secondary or Recycled sources. Primary, or ‘virgin’, aggregates are either Land- or Marine-Won. Gravel is a coarse marine-won aggregate; land-won coarse aggregates include gravel and crushed rock. Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder.
Secondary aggregates are materials which are the by-products of extractive operations and are derived from a very wide range of materials
Recycled concrete is a viable source of aggregate and has been satisfactorily used in granular subbases, soil-cement, and in new concrete. Recycled aggregates are classified in one of two ways, as:
Recycled Aggregate (RA), or as Recycled Concrete Aggregate (RCA)


Practical to determine Specific Gravity of Coarse Aggregate- Concrete Practical


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To Determine Specific Gravity of Coarse Aggregate – Concrete Practical
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