Jalli

About Jalli (Blue Metal)

Jalli, also known as blue metal or crushed stone aggregate, is an essential component of concrete. It’s produced by crushing hard granite rocks into specific sizes. The name “blue metal” comes from the bluish-grey color of crushed granite.

Uses of Jalli

  • RCC Work:Essential ingredient in reinforced cement concrete
  • Foundation:Provides strength to building foundations
  • Slabs & Roofs:Used in roof slab concrete mix
  • Columns & Beams:Structural concrete elements
  • Road Construction:Base layer for roads
  • Railway Ballast:Track bed material

20 mm jelli

  1. Ideal for RCC slabs
  2. Columns & beams
  3. General construction

40 mm jalli

  1. Foundation work
  2. Heavy duty concrete
  3. Road construction

20mm vs 40mm – Which to Use?

RCC Slabs (residential) 20mm
Columns & Beams 20mm
Foundation (PCC) 40mm
Footings 40mm
Road Base 40mm
Mass Concrete 40mm

Quality Specifications

  • Material:Crushed granite stone
  • Shape:Angular/cubical
  • Impact Value:Less than 30%
  • Water Absorption:Less than 2%
  • Flakiness Index:Less than 25%