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Batu Split
STRUCTURE & PHYSICSbeginner
Definition
Coarse aggregate — crushed stone ranging from 10 mm to 30 mm, mixed with semen and pasir to form structural concrete (cor-beton). Batu split is the largest component of a concrete mix by volume, contributing to the concrete's compressive strength and bulk density. Quality depends on the source stone — limestone, granite, or river gravel — and on the accuracy of the crushing size.
Example
Indonesian concrete specification typically calls for batu split 10–20 mm or 20–30 mm depending on the member thickness — a floor slab uses smaller 10–20 mm stone to achieve better consolidation and surface finish, while columns can accept larger 20–30 mm for cost savings.