Fineness Content Test

Fineness Content Test
The Fineness Content Test, performed using a 75 µm sieve, determines the quantity of tiny particles in aggregates. Excessive fines have an impact on water demand, workability, and mix bonding qualities. This test, which is normally performed in accordance with ASTM C117 or BS 812-103.1, determines the cleanliness and appropriateness of fine and coarse aggregates for use in concrete and asphalt. High fine content may cause lower strength, shrinkage, and durability concerns. This test helps to optimize mix proportions by determining the fine material percentage, resulting in stronger bonding and improved performance in both structural and pavement applications.

Advantages of Fineness Content Test:

• Identifies fine content in aggregates
• Prevents mix instability and segregation
• Ensures compliance with specification limits
• Improves workability and strength balance
• Essential for quality control in concrete and asphalt mixes