Black Stone Chips (Aggregates)
Size: 3/4″ down-sized (19mm) Source: Crushed from black basalt or granite boulders Shape: Angular for superior mechanical bonding in concrete mixes
Sylhet Coarse Sand
Fineness Modulus (FM): 2.2 – 2.8 Color: Deep red/orange-tinted natural river sand Usage: Mandatory for high-strength RCC casting (slabs, columns, beams)