What it is
Coarse aggregate (jelly) is usually crushed granite in sizes like 20 mm and 12 mm. Fine aggregate is sand. Aggregate makes up most of concrete's volume and gives it bulk and strength.
Key points
- 20 mm for most RCC work
- 12 mm for thin sections and dense steel
- 40 mm for PCC and mass concrete
- Should be clean, angular and well graded
Why it matters
Dusty or flaky aggregate weakens concrete. Good aggregate is cheap insurance.
How Elamentt handles it
Our quantities count 20 mm aggregate by the 100 cft unit; we check it on delivery.