Sand Equivalent Test
The Sand Equivalent Test, which is carried out in accordance with ASTM D2419 or AASHTO T176, determines the relative cleanliness of fine aggregates by measuring the quantity of clay-like or plastic particles present. A high sand equivalent value implies clean sand with less clay, which is essential for efficient bonding, lower water consumption, and maximum durability in concrete and asphalt mixtures. This test is very important for determining the appropriateness of manufactured or recycled sands, and it is commonly required for road foundation and hot mix asphalt applications. It promotes mixture stability and long-term performance.
Advantages of Sand Equivalent Test:
- Measures clay content in fine aggregates.
- Ensures clean, high-performance sands.
- Improves bonding and strength in mixtures.
- Improves workability and water demand.
- Ideal for evaluating produced or marginal materials.
