Transcription
Construction of Asphalt Pavements
TopicsProductionTransportationLaydownSelection of MaterialsPreparing Mix DesignProperly Storing AggregateProperly Drying AggregateAdding Binder and MixingTimely DeliveryMatch Paver SpeedProper Thickness and CrownProper Density at ScreenProper Size and Type of RollersProper Vibration FrequencyProper Rolling PatternCIVL 4155/61552
Asphalt PlantsBatch PlantCIVL 4155/6155Drum Plant3
Material Flow(Taken from The Asphalt Institute Manual ES‐1, Second Edition)LiquidAsphaltCementHeatingDryingCold Feed BinsStockpiledAggregateCIVL 4155/61554
Material StockpilesCIVL 4155/61555
Covered StockpilesCIVL 4155/61556
Mix Production CostsCIVL 4155/61557
Batch PlantHot ElevatorCold ElevatorCIVL 4155/61558
Cold Feed BinsColdElevatorCIVL 4155/615511
Aggregate DryerCIVL 4155/615513
Dryer CutawayCIVL 4155/615514
Mixing Tower Cutaway(Taken from The Asphalt Institute Manual ES‐1, Second Edition)SCREEN DECK & HOT BINSHOT ELEVATORCIVL 4155/615516
Screen Deck & Hot Bins(Taken from The Asphalt Institute Manual ES‐1, Second Edition)CIVL 4155/615517
Pugmill Mixer(Taken from The Asphalt Institute Manual ES‐1, Second Edition)CIVL 4155/615519
Typical Mixing Cycle1.3.CIVL 4155/6155Aggregate and asphaltcement are mixedAggregate enterspugmill from weigh box4.2.Asphalt cement enterspugmill from spraybarFinished mix dischargedthrough pugmill gate5.Pugmill gate closes toreceive the next batch20
StorageSLAT CONVEYORCIVL 4155/615521
Drum PlantStorageSiloCIVL 4155/615524
Batch PlantCIVL 4155/615525
Drum PlantStorageSiloCIVL 4155/615526
Parallel‐Flow Drum Plant(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)CIVL 4155/615527
Counter‐Flow Drum Plant(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)CIVL 4155/615528
Double‐Drum Plant(Taken from The U. S. Army Corps of Engineers Hot Mix Paving Handbook)CIVL 4155/615529
Double‐Drum Plant(Taken from The ASTEC Double‐Barrel Brochure)BurnerCombustionZone FlightsCIVL 4155/6155ShoweringFlightsConditioningFlights30
Double‐Drum Plant(Taken from The ASTEC Double‐Barrel Brochure)RAP EntersHereBurnerAC EntersHereCIVL 4155/6155Final ProductExits Here31
Portable Drum PlantCIVL 4155/615532
Hot Mix Asphalt Paving
Paving TrainCIVL 4155/615535
Asphalt PaverHopperScreedSide ArmCIVL 4155/615536
Asphalt PaverHopperScreedSide ArmCIVL 4155/615537
Paving MachineSource: PTC Pavement Guide InteractiveCIVL 4155/615538
Paving MachineSource: PTC Pavement Guide InteractiveCIVL 4155/615539
Paving TrainCIVL 4155/615540
Material Transfer DeviceCIVL 4155/615541
Asphalt CompactionCIVL 4155/615542
Asphalt CompactionScreedBreakdown RollerIntermediate RollerFinish RollerTrafficCIVL 4155/615543
Asphalt CompactionCIVL 4155/615544
Asphalt CompactionCIVL 4155/615545
Asphalt CompactionCIVL 4155/615546
Screen Deck & Hot Bins (Taken from The Asphalt Institute Manual ES‐1, Second Edition) CIVL 4155/6155 17. Pugmill Mixer (Taken from The Asphalt Institute Manual ES‐1, Second Edition) CIVL 4155/6155 19. Typical Mixing Cycle 1. Aggregateenters pugmillfrom pugmillfromweigh box 2. Asphaltcement enters spraybar 3. Aggregate and asphalt cement are mixed 4. Finished mix
