Aggregates
Construction Aggregate · Crushed Stone · Gravel · Sand · Recycled Concrete Aggregate
Aggregates are granular materials used in construction and industrial processes, produced from natural rock deposits or recycled materials. They include crushed stone, gravel, sand, and other mineral particles of varying sizes. Aggregates are dense, abrasive, and often dusty when dry. KWS designs heavy-duty conveying systems that ensure reliable handling of aggregates with maximum wear resistance, consistent flow, and minimal maintenance.
Overview
Chemical Formula
Common Names
Common Forms
Applications
- Concrete, asphalt, and construction materials
- Road base and railway ballast
- Drainage and erosion control
- Recycled aggregate and industrial filler applications
Material Characteristics
| Property | Value / Description |
|---|---|
| Common Forms | Crushed Rock, Gravel, Sand, Recycled Aggregate |
| Bulk Density | 85-120 lb/ft³ (varies by material and moisture content) |
| Flow Behavior | Free-flowing when dry; cohesive and compactable when moist |
| Abrasiveness | Very High Causes severe wear on metal surfaces |
| Corrosiveness | Low May retain moisture that promotes surface rusting |
| Dust Potential | High Fine particles require dust control and ventilation |
Handling Challenges
- Severe abrasion leading to rapid wear of screws, liners, and housings
- Dust generation and visibility hazards during transfer
- Caking and buildup when exposed to moisture
- Noise and impact damage from large, dense particles
- Variable particle size distribution affecting flow consistency
Summary
Aggregates require conveying and storage systems designed for heavy, abrasive, and free-flowing materials. KWS Manufacturing provides engineered solutions—including screw conveyors, belt conveyors, and drag conveyors—constructed from abrasion-resistant materials such as AR plate or chromium carbide to ensure long-lasting performance.
With decades of experience handling aggregates and minerals, KWS ensures efficient, durable, and low-maintenance operation for aggregate conveying systems.
