construction of concrete pavements (jeff roesler)[1]

8/6/2019 Construction of Concrete Pavements (Jeff Roesler)[1]

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Construction ofConstruction ofConcrete PavementsConcrete PavementsJefferyJeffery RoeslerRoesler, Ph.D., P.E, Ph.D., P.E.AssociAssocate Professoriate ProfessorDepartment of Civil and EngineeringDepartment of Civil and EngineeringUniversity of IllinoisUniversity of IllinoisPontificia Universidad CatPontificiaUniversidad Catlica de Chilelica de ChileDepartamento de IngenierDepartamento de

Ingeniera y Gestia y Gestin de la Construccin de la ConstruccinnOctober 19, 2009Octor 19, 2009AcknowledgmentsAcknowledgments..Dr. Dan Zollinger Professor, Texas A&M..NHI Training Course..Gary Fick Trinity Construction ManagementConstruction ofConstruction ofConcrete PavementsConcrete PavementsJefferyJeffery RoeslerRoesler, Ph.D., P.E, Ph.D., P.E.AssociAssocate Professoriate ProfessorDepartment of Civil and EngineeringDepartment of Civil and Engineering

University of IllinoisUniversity of IllinoisPontificia Universidad CatPontificiaUniversidad Catlica de Chilelica de ChileDepartamento de IngenierDepartamento deIngeniera y Gestia y Gestin de la Construccin de la ConstruccinnOctober 19, 2009Octor 19, 2009AcknowledgmentsAcknowledgments..Dr. Dan Zollinger Professor, Texas A&M..NHI Training Course..Gary Fick Trinity Construction Management


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Types of Concrete PavementsTypes of Concrete Pavements..Jointed Plain Concrete Pavements (JPCP)..Continuously Reinforced Concrete Pavements (CRCP)..Jointed Reinforced Concrete Pavements (JRCP) Pre-stressed Concrete Pavements..Interlocking Concrete Block Pavements (ICBP)

..Fiber Reinforced Concrete (FRC) Pavements

..Whitetopping and Ultrathin Whitetopping (UTW)Types of Concrete PavementsTypes of Concrete Pavements..Jointed Plain Concrete Pavements (JPCP)..Continuously Reinforced Concrete Pavements (CRCP)..Jointed Reinforced Concrete Pavements (JRCP) Pre-stressed Concrete Pavements..Interlocking Concrete Block Pavements (ICBP)..Fiber Reinforced Concrete (FRC) Pavements..Whitetopping and Ultrathin Whitetopping (UTW)CONCRETE PAVEMENTSCONCRETE PAVEMENTS..Typical Cross Section:

..Less stiff layer with depthSubbase/ BaseSubgradeConcrete10cm Pervious Concrete/ OGDL29cm PCCPLimerock base


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JOINTED PLAIN CONCRETE PAVEMENT(JPCP) Portland CementConcreteSubgradeJoint withDowel Bar

Joint Spacing3.5 to 6 mStabilized orGranular BaseJOINTED PLAIN CONCRETE PAVEMENT(JPCP) Portland CementConcreteSubgradeJoint withDowel BarJoint Spacing3.5 to 6 m

Stabilized orGranular BaseCONTINUOUSLY REINFORCED CONCRETEPAVEMENT (CRCP)Portland CementConcreteSubgradeShrinkage Cracks,1 to 2 m spacingStabilized BaseContinuous Steel Barsthroughout Length ofPavement


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Horizontal ConstructionHorizontal ConstructionPrimary Steps in ConcretePrimary Steps in ConcretePavement ConstructionPavement Construction..Preparing the soil & base layer..Consistent concrete material..Placing & finishing concrete

..Texturing surface

..Curing & temperature management

..Sawing and Sealing

..Opening to trafficHorizontal ConstructionHorizontal ConstructionPrimary Steps in ConcretePrimary Steps in ConcretePavement ConstructionPavement Construction..Preparing the soil & base layer..Consistent concrete material..Placing & finishing concrete..Texturing surface..Curing & temperature management

..Sawing and Sealing..Opening to traffic


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Preparing the Support LayersPreparing the Support Layers..Construction starts with the subgrade(suelo)..Uniformity Soil type Moisture content

Density..Remove unsuitable materials..Stabilize or treat poor soilsPreparation for PavingPreparation for Paving Construction staking alignment and elevation Setting string-linePreparing the Support LayersPreparing the Support Layers..Construction starts with the subgrade(suelo)..Uniformity Soil type Moisture contentDensity..Remove unsuitable materials

..Stabilize or treat poor soilsPreparation for PavingPreparation for Paving Construction staking alignment and elevation Setting string-line


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Preparation for PavingPreparation for Paving..Fine grading Laser Level Critical for thickness control of every layer Establishes a foundation for smoothnessPreparation for PavingPreparation for Paving..Checking grade elevation and thickness

quality control..Stretching a string across the gradebetween the two longitudinal stringlinesPreparation for PavingPreparation for Paving..Fine grading Laser Level Critical for thickness control of every layer Establishes a foundation for smoothnessPreparation for PavingPreparation for Paving..Checking grade elevation and thicknessquality control..Stretching a string across the gradebetween the two longitudinal stringlines


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Subbase OperationsSubbase Operations..Granular materials (agregados) Similar to subgrade preparation Usually higher density requirement..Cement-stabilized materials Placed using slipform or asphalt equipment

Aggregate BaseAggregate BaseSubbase OperationsSubbase Operations..Granular materials (agregados) Similar to subgrade preparation Usually higher density requirement..Cement-stabilized materials Placed using slipform or asphalt equipmentAggregate BaseAggregate Base


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GeosyntheticGeosyntheticReinforcementReinforcementAggregateAggregate SubbaseSubbaseCompactionCompactionGeosyntheticGeosyntheticReinforcementReinforcementAggregateAggregate SubbaseSubbaseCompactionCompaction


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Cement Treated BaseCement Treated Base..Uniformity..Compressive strength for the mix design& measured by in-place densityLean orLean or EconocreteEconocreteBaseBase..Mixed, transported and placed the same as

concrete pavement..No contraction joints typically..7-day curing period..Second application of wax curing compound asa bond inhibitorCement Treated BaseCement Treated Base..Uniformity..Compressive strength for the mix design& measured by in-place densityLean orLean or EconocreteEconocreteBaseBase..Mixed, transported and placed the same asconcrete pavement

..No contraction joints typically..7-day curing period

..Second application of wax curing compound asa bond inhibitor


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Open Graded Base (319)Open Graded Base (319)..Separator fabric is placed between soil layerand open graded base..Bituminous is placed with an asphalt paver andscreed compacted..Cement treated is placed similar to CTB without

the roller (screed compacted)Open Graded Base (319)Open Graded Base (319)..Separator fabric is placed between soil layerand open graded base..Bituminous is placed with an asphalt paver andscreed compacted..Cement treated is placed similar to CTB withoutthe roller (screed compacted)


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Setting Dowel BasketsSetting Dowel Baskets..Planned joint location..Anchored firmly pins, clips and nails, etc...Alignment 3 planes (joint lockup willcause cracking)Setting Dowel BasketsSetting Dowel Baskets

..Planned joint location

..Anchored firmly pins, clips and nails, etc.

..Alignment 3 planes (joint lockup willcause cracking)


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FixedFixed--Form Paving OperationsForm Paving Operations..Paving form is the mold Holds concrete in place Establishes grade and alignment Serves as tracks for paving equipmentTypical Steel FormTypical Steel FormForm Lock

FixedFixed--Form Paving OperationsForm Paving Operations..Paving form is the mold Holds concrete in place Establishes grade and alignment Serves as tracks for paving equipmentTypical Steel FormTypical Steel FormForm Lock


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Application AdvantagesApplication AdvantagesFixedFixed--Form PavingForm Paving..Tight tolerances -side clearance..Multiple changes of width..Blockouts..Intersections -quadrants open to trafficApplication AdvantagesApplication AdvantagesFixedFixed--Form PavingForm Paving

..Tight tolerances -side clearance

..Multiple changes of width

..Blockouts

..Intersections -quadrants open to traffic


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Eliminate high and low areasEliminate high and low areasSecure to prevent movementSecure to prevent movementEliminate high and low areasEliminate high and low areasSecure to prevent movementSecure to prevent movement


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MoistenMoisten SubbaseSubbase..Subbase surface should be kept damp, butwithout standing water Surface temperature controlTransporting ConcreteTransporting Concrete..Transit mix

..AgitatorMoistenMoisten SubbaseSubbase..Subbase surface should be kept damp, butwithout standing water Surface temperature controlTransporting ConcreteTransporting Concrete..Transit mix..Agitator


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Transporting ConcreteTransporting ConcreteDump Truck Dump TrailerLive Bottom TrailerTransporting ConcreteTransporting ConcreteDump Truck Dump TrailerLive Bottom Trailer


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Concrete Construction in ChinaConcrete Construction in China


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Concrete PlacerConcrete PavementConcrete PavementPlacer / SpreaderPlacer / SpreaderConcrete PlacerConcrete PlacerConcrete PavementConcrete PavementPlacer / SpreaderPlacer / Spreader


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Slipform Concrete PavingSlipform Concrete PavingTO EXTRUDE:To shape a material byforcing it through a mold.PaverPaverSetupSetup..Width fresh slab will expand afterextrusion

..Trueness cross-slope/crown

..Integral curb dimensions

..Vibrator spacing and operation

..Sensor operation -dailySlipform Concrete PavingSlipform Concrete PavingTO EXTRUDE:To shape a material byforcing it through a mold.PaverPaverSetupSetup..Width fresh slab will expand afterextrusion..Trueness cross-slope/crown..Integral curb dimensions

..Vibrator spacing and operation..Sensor operation -daily


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SlipformSlipformPaverPaverComponentsComponentsIMCPManualSlipformSlipformPaverPaver..Vibrators..Pan and Side formSlipformSlipformPaverPaverComponentsComponentsIMCPManualSlipformSlipformPaverPaver

..Vibrators

..Pan and Side form


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Slipform Paving OperationsSlipform Paving Operations..Establishing String Line and Elevation..Paver Set Up..Placement Steel..Slipform Paving ProcessSlipformSlipformPaverPaver

..Tractor

..Auger &Strike-offSlipform Paving OperationsSlipform Paving Operations..Establishing String Line and Elevation..Paver Set Up..Placement Steel..Slipform Paving ProcessSlipformSlipformPaverPaver..Tractor..Auger &Strike-off


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Pavement slab constructionPavement slab constructionPavement slab constructionPavement slab constructionPavement slab constructionPavement slab constructionPavement slab constructionPavement slab construction


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Global positioning system (GPS) controls will likely beable to eliminate the need for a string line in the futureGPS Receiver GPSControllerand LaserHeight Gages

LaserSensorGlobal positioning system (GPS) controls will likely beGlobal positioning system(GPS) controls will likely beable to eliminate the need for a string line in the futureable to eliminate theneed for a string line in the futureGPS Receiver GPSControllerand LaserHeight GagesLaserSensorHigh

ResolutionLaser


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Vibrator Sphere of InfluenceVibrator Sphere of InfluenceDumping/SpreadingDumping/Spreading..Regardless of the method, the goal is tomaintain a consistent amount of concrete infront of the paverVibrator Sphere of InfluenceVibrator Sphere of InfluenceDumping/SpreadingDumping

/Spreading..Regardless of the method, the goal is tomaintain a consistent amount of concrete infront of the paver


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Paving Speed ~ 0.5 to 3m / min.Paving Speed ~ 0.5 to 3m / min. Paving Speed ~ 0.5 to 3m / min.Paving Speed ~ 0.5 to 3m / min.


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Discharging/placing PCCDischarging/placing PCCDowel bar inserterDischarging/placing PCCDischarging/placing PCCDowel bar inserterDischarging/placing PCCDischarging/placing PCCDowel bar inserterDischarging/placing PCCDischarging/placing PCCDowel bar inserter


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Discharging/placing PCCDischarging/placing PCCDowel bar inserterDischarging/placing PCCDischarging/placing PCCTie barsDischarging/placing PCCDischarging/placing PCCDowel bar inserterDischarging/placing PCCDischarging/placing PCCTie bars


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Crane Slab for Loading RailcarsCrane Slab for Loading RailcarsAirfield ConcretePavementAirfield Concrete PavementCrane Slab for Loading RailcarsCrane Slab forLoading RailcarsAirfield Concrete PavementAirfield Concrete Pavement


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Edge SlumpEdge Slump..Variability (non-uniform concrete) will resultin edge slump or edge failureEdge SlumpEdge Slump..Variability (non-uniform concrete) will resultin edge slump or edge failure


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FinishingFinishing..Burlap drag..Mechanicalfinishing..FinishingFinishing

..Burlap drag

..Mechanicalfinishing..From Fine AggregateParticlesMicrotextureMicrotexture


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Formed intosurfaceMacrotextureMacrotexture(Grooves)(Grooves)MicrotextureMicrotexture..Burlap drag..Turf drag

..BroomFormed intosurfaceMacrotextureMacrotexture(Grooves)(Grooves)MicrotextureMicrotexture..Burlap drag..Turf drag..Broom


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MacrotextureMacrotexture..Transverse tining..Straight and clean tinesMacrotextureMacrotexture..Transverse tining..Straight and clean tines


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Final TexturingFinal Texturing..Transverse tining..Longitudinal tiningFinal TexturingFinal Texturing..Transverse tining..Longitudinal tining


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Concrete Pavement (US Practices)Concrete Pavement (US Practices)..Alternative Surface TexturesGrinding Exposed AggregatesCuring CompoundCuring CompoundConcrete Pavement (US Practices)Concrete Pavement(US Practices)..Alternative Surface Textures

Grinding Exposed AggregatesCuring CompoundCuring Compound


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CuringCuring..Why?..Plastic shrinkagecracking..Permeability..When?..Before the surface

can dry weatherwill influence thisgreatly..How much?COMPLETECOVERAGECuringCuring..Why?..Plastic shrinkagecracking..Permeability..When?..Before the surface

can dryweatherwill influence this

greatly..How much?COMPLETECOVERAGE


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Joint Saw and Seal OperationsJoint Saw and Seal OperationsJoint Saw and Seal OperationsJoint Saw and Seal Operations


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Types of Pavement Joints TransverseContractionConstructionExpansion/Isolation Longitudinal

ContractionConstructionTypes of Pavement Joints TransverseContractionConstructionExpansion/Isolation LongitudinalContractionConstruction


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Sawing JointsSawing Joints Why? So it cracks where we wantit to When? Before it cracks, but afterraveling is minimized

Green saw at T/3 or earlyentry is shallower (20 to25mm) Dimension sawing isoptional with 6mm jointwidthSawing JointsSawing Joints Why? So it cracks where we wantit to When? Before it cracks, but afterraveling is minimizedGreen saw at T/3 or earlyentry is shallower (20 to

25mm) Dimension sawing isoptional with 6mm jointwidth


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SawsSawsWet Walk Behind Early EntrySpan SawSawsSawsWet Walk Behind Early EntrySpan SawSawing WindowSawing WindowTimeConcrete SetToo

EarlyRavelingTooLateRandom Cracking


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Sawing JointsSawing JointsSawing JointsSawing JointsSealing JointsSealing Joints Backer rod Silicone sealant Longitudinalconstruction joints


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Sawing Window.. Concrete mix characteristics Cement type Admixtures Fast Track.. Base Type

Aggregate, Stabilized, Open graded.. Production schedule- Early cut or conventional.. Weather conditions Ambient temperature, Wind, Humidity, CloudcoverSawing WindowSawing Window..Concrete mix characteristics Cement typeAdmixtures Fast Track..Base TypeAggregate, Stabilized, Open graded..Production schedule

-Early cut or conventional..Weather conditions Ambient temperature, Wind, Humidity, Cloudcover


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Two-Lift Concrete Pavement.. New U.S. TrendsTwoTwo--Lift Concrete PavementLift Concrete Pavement..New U.S. TrendsTwoTwo--Lift Concrete PavementLift Concrete Pavement..New U.S. Trends


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Continuously ReinforcedContinuously ReinforcedConcrete PavementConcrete PavementChair SetChair Set--upupContinuously ReinforcedContinuously ReinforcedConcrete PavementConcrete PavementChair SetChair Set--upup


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Steel LayoutSteel LayoutCRCP Chairs (Steel)CRCP Chairs (Steel)Steel LayoutSteel LayoutCRCP Chairs (Steel)CRCP Chairs (Steel)


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Steel TiesSteel TiesSteel TyingSteel TyingSteel TiesSteel TiesSteel TyingSteel Tying


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Bar SplicesBar SplicesSingle Layer SteelSingle Layer SteelBar SplicesBar SplicesSingle Layer SteelSingle Layer Steel


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Roller Compacted Concrete (RCC)Roller Compacted Concrete (RCC)Roller Compacted Concrete (RCC)Roller Compacted Concrete (RCC)


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construction of concrete pavements (jeff roesler)[1]

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