Term
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Definition
Method of mechanically transmitting energy to fracture the rock
Using Compressive Force or High-Speed impact force |
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Term
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Definition
(Compressive)
Rock flows into the space
Moves in an elliptical-downward motion toward the stationary jaw while crushing
3. Allow the crushed material to exit |
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Term
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Definition
(Compressive)
Gyrating mantle mounted within a deep bowl
Used as primary or secondary units |
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Term
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Definition
(Compressive)
Works like a gyratory with an eccentric rotating cone around a vertical shaft
Cause a gyrating movement of the head |
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Term
| Difference of a Cone Crusher to a Gyratory Crusher |
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Definition
(Difference between Crushers)
A shorter head
Smaller receiving opening
Higher rotation speed |
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Term
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Definition
| Produce fracturing of stone by passing the material between two or more closely spaced roller |
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Term
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Definition
(Impact)
Use breakers and hammers rotation at high speed to fracture the input stone
• Speed of rotation is important to the effective operation of these crushers |
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Term
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Definition
70% of operation asphalt plants
Aggregates combined, heated, and mixed with heated asphalt cement in a unit
Dust collection, asphalt storage, truck scales, and storage or surge silo |
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Term
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Definition
Tractor power unit: hopper, slat conveyors, and augers
Auger distributes asphalt evenly in front of the screed |
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Term
| Paving Process (New Road) |
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Definition
1. Limerock Base overcompacted and graded to required elevation and shape
2. Base is broomed clean and a layer of liquid asphalt (Prime) is applied to the surface using a distributor
3. AP is spread over the primer using an asphalt paver
4. Compaction with rollers |
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Term
| Paving Process (Existing Road) |
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Definition
1. Milling partially removes existing pavement
2. Broom clean, layer of liquid asphalt (Tack Coat)
3. AP is spread
4. Compaction by rollers |
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