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Construction of Asphalt Pavements

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Page 1: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Construction of Asphalt Pavements

Page 2: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Selection of MaterialsPreparing Mix Design

Properly Storing AggregateProperly Drying AggregateAdding Binder and Mixing

Proper Thickness and CrownProper Density at Screen

Proper Size and Type of RollersProper Vibration Frequency

Proper Rolling Pattern

Timely DeliveryMatch Paver Speed

Topics

Production LaydownTransportation

2CIVL 4155/6155

Page 3: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Plants

Batch Plant Drum Plant

3CIVL 4155/6155

Page 4: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Material Flow(Taken from The Asphalt Institute Manual ES‐1, Second Edition)

4CIVL 4155/6155

HeatingDrying

Cold Feed Bins

LiquidAsphaltCement

StockpiledAggregate

Page 5: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Material Stockpiles

5CIVL 4155/6155

Page 6: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Covered Stockpiles

6CIVL 4155/6155

Page 7: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Mix Production Costs

7CIVL 4155/6155

Page 8: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Batch Plant

8CIVL 4155/6155

Cold Elevator

Hot Elevator

Page 9: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Cold Feed Bins

11CIVL 4155/6155

ColdElevator

Page 10: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Aggregate Dryer

13CIVL 4155/6155

Page 11: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Dryer Cutaway

14CIVL 4155/6155

Page 12: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Mixing Tower Cutaway(Taken from The Asphalt Institute Manual ES‐1, Second Edition)

HOT ELEVATOR

SCREEN DECK & HOT BINS

16CIVL 4155/6155

Page 13: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Screen Deck & Hot Bins(Taken from The Asphalt Institute Manual ES‐1, Second Edition)

17CIVL 4155/6155

Page 14: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Pugmill Mixer(Taken from The Asphalt Institute Manual ES‐1, Second Edition)

19CIVL 4155/6155

Page 15: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Typical Mixing Cycle

1. Aggregate enters pugmill from weigh box

2. Asphalt cement enterspugmill from spraybar

3. Aggregate and asphaltcement are mixed

4. Finished mix dischargedthrough pugmill gate

5. Pugmill gate closes toreceive the next batch

20CIVL 4155/6155

Page 16: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Storage

SLAT CONVEYOR

21CIVL 4155/6155

Page 17: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Drum Plant

StorageSilo

24CIVL 4155/6155

Page 18: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Batch Plant

25CIVL 4155/6155

Page 19: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Drum Plant

StorageSilo

26CIVL 4155/6155

Page 20: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Parallel‐Flow Drum Plant(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)

27CIVL 4155/6155

Page 21: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Counter‐Flow Drum Plant(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)

28CIVL 4155/6155

Page 22: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

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

29CIVL 4155/6155

Page 23: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Double‐Drum Plant(Taken from The ASTEC Double‐Barrel Brochure)

CombustionZone Flights

ShoweringFlights

ConditioningFlights

Burner

30CIVL 4155/6155

Page 24: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Double‐Drum Plant(Taken from The ASTEC Double‐Barrel Brochure)

RAP EntersHere

AC EntersHere

Final ProductExits Here

Burner

31CIVL 4155/6155

Page 25: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Portable Drum Plant

32CIVL 4155/6155

Page 26: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Hot Mix Asphalt Paving

Page 27: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Paving Train

CIVL 4155/6155 35

Page 28: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Paver

Hopper Screed

Side Arm

36CIVL 4155/6155

Page 29: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Paver

Screed

Hopper

Side Arm

37CIVL 4155/6155

Page 30: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Paving Machine

Source: PTC Pavement Guide Interactive

38CIVL 4155/6155

Page 31: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Paving Machine

Source: PTC Pavement Guide Interactive

39CIVL 4155/6155

Page 32: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Paving Train

CIVL 4155/6155 40

Page 33: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Material Transfer Device

41CIVL 4155/6155

Page 34: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Compaction

CIVL 4155/6155 42

Page 35: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Compaction

ScreedBreakdown RollerIntermediate Roller

Finish RollerTraffic

CIVL 4155/6155 43

Page 36: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Compaction

CIVL 4155/6155 44

Page 37: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Compaction

CIVL 4155/6155 45

Page 38: 14 - Construction of Asphalt Pavements - Memphis - Construction of Asphalt...Asphalt Plants Batch Plant Drum Plant CIVL 4155/6155 3. Material Flow (Taken from The Asphalt Institute

Asphalt Compaction

CIVL 4155/6155 46