40mm aggregates are inert granular materials (not exceeding the nominal size 63 mm) such as sand that, along with water and Portland cement and/or asphalt/bitumen, are an essential ingredient in concrete. 40 mm Aggregates are mainly used for PCC in foundation, asphalt/ bitumen/ concrete roads as Base or sub-base course and in rigid pavements as base course separately or mixed with other aggregates depending on the application.
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