Aggregate Stockpiles: How to Prevent Segregation and Contamination
Good material can fall out of specification in a poor stockpile. Learn why segregation happens and how to build, load and protect a stockpile.
Based on pavement design
Base and subbase
Base Course
Base material
Continuously graded crushed mix for the load-bearing layer under the surface.
Based on pavement design
Properties and technical role
The base layer sits directly under the asphalt or concrete surface and carries the highest traffic stress of the granular layers. This is why fractured faces and rock quality matter so much here.
Continuous grading makes high density achievable, and limiting plasticity prevents loss of bearing capacity in the presence of moisture.
Applications
- Road pavement
- Industrial yards
- Parking and terminals
Quality information
| Method | Test |
|---|---|
| ASTM C136 | Sieve analysis |
| ASTM C131 | Los Angeles abrasion |
| ASTM D5821 | Fractured faces |
Related productsRelated
Other Base and subbase products
Related articlesRead more Read more
Production and processing
Sand and gravel industry
Converting Tonnes and Cubic Metres: Bulk Density and Sand Bulking
The weight and volume of materials change with compaction and moisture. Learn bulk density, the bulking of damp sand and how to estimate sand and gravel quantities.
Quality and technical information
Flat and Elongated Particles: Why Particle Shape Matters
Flat and elongated particles reduce compaction and workability and break under load. Learn how they are measured, what they do and how production reduces them.
Quality and technical information
How to Read a Grading Curve: A Practical Guide for Aggregates
A grading curve shows how particle sizes are distributed. Learn continuous, gap and uniform grading and the coefficients of uniformity and curvature.
Sand and gravel industry
Ordering Aggregate: What Should You Tell Your Supplier?
An exact order prevents rejected loads and site stoppages. A practical list of what a sand and gravel inquiry needs, from application to delivery.
Industry developments
Recycled Concrete Aggregate: Properties, Limits and Uses
Crushing old concrete reduces quarrying and waste. Learn the properties of recycled aggregate, its higher absorption, suitable uses and how to control its quality.
Inquire about Base material
The grading on offer, stock and supply terms for this product are confirmed at the time of inquiry.