Asphalt Production Asphalt Plants Batch Plant Drum Plant Produces - - PowerPoint PPT Presentation

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Asphalt Production Asphalt Plants Batch Plant Drum Plant Produces - - PowerPoint PPT Presentation

Sep 10, 2022 343 likes •762 views

Asphalt Production Asphalt Plants Batch Plant Drum Plant Produces asphalt one batch at a time Produces asphalt continuously Relatively low production capacities Very high production capacities Easy to change to a new mix as needed Storage

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SLIDE 1

Asphalt Production

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SLIDE 2

Asphalt Plants

2 CIVL 4155/6155

Batch Plant Drum Plant Produces asphalt one batch at a time Relatively low production capacities Easy to change to a new mix as needed Produces asphalt continuously Very high production capacities Storage silos hold accumulated mix

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SLIDE 3

Material Flow

(Taken from The Asphalt Institute Manual ES-1, Second Edition)

3 CIVL 4155/6155

Heating Drying Cold Feed Bins Liquid Asphalt Cement Stockpiled Aggregate

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SLIDE 4

Material Stockpiles

4 CIVL 4155/6155

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SLIDE 5

Batch Plant

5 CIVL 4155/6155 Cold Elevator Hot Elevator

Storage silos can help to make up for low production capacities by making mix even when trucks aren’t waiting to load

Primary Dust Collector Secondary Dust Collector Control Room

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SLIDE 6

Cold Feed Bins

6 CIVL 4155/6155

Cold Elevator

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SLIDE 7

Aggregate Dryer

7 CIVL 4155/6155

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SLIDE 8

Dryer Cutaway

8 CIVL 4155/6155

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SLIDE 9

Mixing Tower Cutaway

(Taken from The Asphalt Institute Manual ES-1, Second Edition)

HOT ELEVATOR SCREEN DECK & HOT BINS

9 CIVL 4155/6155

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SLIDE 10

Screen Deck & Hot Bins

(Taken from The Asphalt Institute Manual ES-1, Second Edition)

10 CIVL 4155/6155

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SLIDE 11

Pugmill Mixer

(Taken from The Asphalt Institute Manual ES-1, Second Edition)

11 CIVL 4155/6155

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SLIDE 12

Typical Mixing Cycle

1. Aggregate enters pugmill from weigh box 2. Asphalt cement enters pugmill from spraybar 3. Aggregate and asphalt cement are mixed 4. Finished mix discharged through pugmill gate 5. Pugmill gate closes to receive the next batch

12 CIVL 4155/6155

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SLIDE 13

Storage

SLAT CONVEYOR

13 CIVL 4155/6155

Heated silos can store asphalt for up to 4 days

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SLIDE 14

Batch Plant

14 CIVL 4155/6155

Primary Dust Collector Secondary Dust Collector Control Room

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SLIDE 15

Drum Plant

Storage Silo

15 CIVL 4155/6155

RAP = Recycled Asphalt Product

Control Room

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SLIDE 16

Asphalt Milling

CIVL 4155/6155 16

http://www.barbicas.com/asphalt_milling.html

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SLIDE 17

RAP Stockpiles

CIVL 4155/6155 17

https://www.worldhighways.com/categories/asphalt-paving-compaction-testing/features/economic-and-environmental-asphalt-recycling/

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SLIDE 18

Fractionated RAP

CIVL 4155/6155 18

https://www.equipmentworld.com/plant-management-of-raprca/

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SLIDE 19

Drum Plant

Storage Silo

19 CIVL 4155/6155

Control Room

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SLIDE 20

Types of Drum Plants

  • Parallel-Flow Drum Plant

– Oldest style of drum plant – Aggregate flows in same direction as burner gases

  • Counter-Flow Drum Plant

– Aggregate flows counter to the burner gases – Introduced to keep asphalt cement from burning

  • Double-Drum Plant

– Asphalt cement kept separated from burner gases

CIVL 4155/6155 20

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SLIDE 21

Parallel-Flow Drum Plant

(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)

21 CIVL 4155/6155

Asphalt cement exposed to hot burner gases Drying and Heating Mixing

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SLIDE 22

Counter-Flow Drum Plant

(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)

22 CIVL 4155/6155

Asphalt cement introduced behind the burner RAP introduced behind the burner

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SLIDE 23

Double-Drum Plant

(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)

23 CIVL 4155/6155

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SLIDE 24

Double-Drum Plant

(Taken from The ASTEC Double-Barrel Brochure)

Combustion Zone Flights Showering Flights Conditioning Flights Burner

24 CIVL 4155/6155

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SLIDE 25

Double-Drum Plant

(Taken from The ASTEC Double-Barrel Brochure)

RAP Enters Here AC Enters Here Final Product Exits Here Burner

25 CIVL 4155/6155

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SLIDE 26

Portable Drum Plant

26 CIVL 4155/6155

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SLIDE 27

Fixed Drum Plant

27 CIVL 4155/6155

https://www.on-sitemag.com/products/ex-series-asphalt-plant-asphalt-drum-mixers/

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Hot Mix Asphalt Paving

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Paving Train

CIVL 4155/6155 30

Asphalt Paver Vibrating Steel Drum Roller Rubber Tired Roller Dump Truck

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SLIDE 30

Asphalt Paver

Hopper Screed Side Arm

31 CIVL 4155/6155

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SLIDE 31

Asphalt Paver

Screed Hopper Side Arm

32 CIVL 4155/6155

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SLIDE 32

Asphalt Paver

Source: PTC Pavement Guide Interactive

33 CIVL 4155/6155

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SLIDE 33

Asphalt Paver

Source: PTC Pavement Guide Interactive

34 CIVL 4155/6155

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SLIDE 34

Paving Train

CIVL 4155/6155 35

Asphalt Paver Material Transfer Device Dump Truck

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SLIDE 35

Material Transfer Device

36 CIVL 4155/6155

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SLIDE 36

Asphalt Compaction

CIVL 4155/6155 37

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SLIDE 37

Asphalt Compaction

Asphalt Paver Screed Vibratory Breakdown Roller Pneumatic Intermediate Roller Steel-Drum Finishing Roller Traffic

CIVL 4155/6155 38

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SLIDE 38

Asphalt Paver Screed

CIVL 4155/6155 39

Asphalt Paver Vibrating Screed

Provides about 85% of the final compaction density

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SLIDE 39

Vibratory Breakdown Roller

CIVL 4155/6155 40

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SLIDE 40

Intermediate and Finishing Rollers

CIVL 4155/6155 41

Steel Drum Finishing Roller Rubber Tire Intermediate Roller