Application
Dust Suppression in Cement and Aggregate Loading
Answer in brief
Aggregates and cement need different answers at the same loading bay.
Coarse aggregate responds well to suppression and water; cement powder does not tolerate either and needs an enclosed spout with extraction.
- Separate the two duties in the design.
- Do not wet a hydraulic binder.
- Keep the outlet close to the load.
Reviewed October 21, 2026 · Updated October 21, 2026
The problem
A single loading bay often handles both aggregate and powder, and a solution designed for one creates a problem for the other.
Desired outcome
A loading arrangement that controls dust for each material by the method appropriate to it.
Process approach
Suppression hoppers and water sprays suit aggregates, where moisture is acceptable and the particles are coarse.
Cement and lime require enclosure: a telescopic spout with a skirt and extraction, because water would start hydration and the powder is too fine for suppression alone.
- Separate methods for aggregate and for binder.
- Water excluded from hydraulic materials.
- Outlet kept close to the growing load.
Selection factors
- Material type at each loading position.
- Moisture tolerance of each product.
- Loading rate and drop height.
- Available extraction at fixed positions.
- Emission limits at the boundary.
Common failure modes
- Water used near a hydraulic binder
- Suppression applied to a powder that needs enclosure
- Outlet left high above the truck bed
- One method applied across all materials at a shared bay
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