Construction Batch Plants - 1HMA Production

HMA Production

BATCH PLANTS

Senior/GraduateHMA Course

Construction Batch Plants - 2HMA Production

What you will learn….

• How gradation is controlled in a batch plant

• How asphalt binder is controlled in a batch plant

• Operational principles for batch plants• Using RAP & recycle production with a

batch plant

Construction Batch Plants - 3HMA Production

Construction Batch Plants - 4HMA Production

Construction Batch Plants - 5HMA Production

Construction Batch Plants - 6HMA Production

N

Construction Batch Plants - 7HMA Production

Role of Dryer in Plant Process

Dry and Heat the Aggregate Materials

Production Rate of Plant Determined

by Dryer Capabilities

Construction Batch Plants - 8HMA Production

Types of Dryers

• Counter-Flow Dryers – Used for Batch plants– Aggregate flows into the burner

• Parallel-Flow Dryers – Used for Drum plants– Aggregate flows away from the burner

Construction Batch Plants - 9HMA Production

Counter-Flow Batch Plant Dryer

Construction Batch Plants - 10HMA Production

Construction Batch Plants - 11HMA Production

The Modern Batch Plant Facility

Construction Batch Plants - 12HMA Production

The Modern Batch Plant Facility

- gradation control at the hot bins

- asphalt binder control at the weigh bucket

Construction Batch Plants - 13HMA Production

Screen Deck

Construction Batch Plants - 14HMA Production

Screen Deck

Construction Batch Plants - 15HMA Production

Hot Storage Bins

Construction Batch Plants - 16HMA Production

Overflow Chutes

Overflowchutes

Hot bins

Screens

Weighhopper

Pugmill

Construction Batch Plants - 17HMA Production

Overflow chutes

Construction Batch Plants - 18HMA Production

Overflow Chutes(why two chutes?)

Construction Batch Plants - 19HMA Production

Hot Bin Indicators

Construction Batch Plants - 20HMA Production

Hot Bin Gates

Construction Batch Plants - 21HMA Production

Hot Bin Gates

Construction Batch Plants - 22HMA Production

Aggregate Sampling at Hot Bin Gate

Construction Batch Plants - 23HMA Production

Aggregate Weigh Hopper

Construction Batch Plants - 24HMA Production

Aggregate Weigh Hopper

AggregateWeighHopper

Asphalt BinderWeighBucket

Construction Batch Plants - 25HMA Production

Weigh Hopper

Construction Batch Plants - 26HMA Production

Asphalt Binder Weigh Bucket

AggregateWeighHopper

Asphalt BinderWeighBucket

Construction Batch Plants - 27HMA Production

Asphalt Binder Weigh Bucket (Suspended Inside on Load Cells)

Construction Batch Plants - 28HMA Production

Construction Batch Plants - 29HMA Production

Pugmill(dry mix cycle, wet mix cycle)

Construction Batch Plants - 30HMA Production

Live Zone in Pugmill

Livezone

Construction Batch Plants - 31HMA Production

Overfilling & Underfilling Pugmills

Construction Batch Plants - 32HMA Production

Inside of Pugmill

Construction Batch Plants - 33HMA Production

Pre-Computerized, Electro-Mechanical Batch Automation

Construction Batch Plants - 34HMA Production

Computerized Batch and Silo Loadout Automation

Construction Batch Plants - 35HMA Production

Screen from Computerized Batch Automation

Construction Batch Plants - 36HMA Production

“Table Top” Computerized Batch Automation

Construction Batch Plants - 37HMA Production

QUESTIONS?