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Construction Aggregate - Classification Based on Geological Origin

The aggregates used in the construction are usually derived from the natural resources. These are prepared for the purpose of construction by reducing their size by means of crushing. There are other types of aggregates that are made indirectly (Not through direct natural means). 

Aggregates- Requirements and Classification

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Construction Aggregates

Aggregate constitutes the 70 -75% of the total concrete volume. These are the major material that provides a skeleton structure for the concrete. They act as economic space fillers. The aggregates are treated as chemically inert or inactive materials in the concrete.