INTEGRATING ASPHALT TECHNOLOGY INTO AIRFIELD PAVEMENT DESIGNS JOHN - - PowerPoint PPT Presentation

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INTEGRATING ASPHALT TECHNOLOGY INTO AIRFIELD PAVEMENT DESIGNS JOHN - - PowerPoint PPT Presentation

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SWIFT CAPTG CANADIAN AIRFIELD ASPHALT PAVEMENTS WORKSHOP INTEGRATING ASPHALT TECHNOLOGY INTO AIRFIELD PAVEMENT DESIGNS JOHN EMERY PRESIDENT JOHN EMERY GEOTECHNICAL ENGINEERING LIMITED, TORONTO JEGEL CANENCO DE LOS ANDES SA, BOGOT

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JEGEL

SWIFT – CAPTG CANADIAN AIRFIELD ASPHALT PAVEMENTS WORKSHOP

INTEGRATING ASPHALT TECHNOLOGY INTO AIRFIELD PAVEMENT DESIGNS

WHILE NOT COMMON, INSTABILITY RUTTING (PUSHING/SHOVING) CAN OCCUR WITH AIRSIDE ASPHALT CONCRETE PAVEMENTS SUBJECTED TO HEAVY, SLOW MOVING WHEEL LOADINGS THIS IS DEALT WITH THROUGH IMPROVED ASPHALT MATERIALS, DESIGNS AND CONSTRUCTION

PRESIDENT – JOHN EMERY GEOTECHNICAL ENGINEERING LIMITED, TORONTO JEGEL CANENCO DE LOS ANDES SA, BOGOTÁ ADJUNCT PROFESSOR – CIVIL ENGINEERING, McMASTER UNIVERSITY, HAMILTON

www.jegel.com JEGEL - ISO 9001 jemery@jegel.com

JOHN EMERY

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ASPHALT PAVEMENT LIFE

INPUT INFORMATION INPUT INFORMATION PERFORMANCE CRITERIA PAVEMENT MODELS PERFORMANCE CRITERIA PAVEMENT MODELS PAVEMENT SERVICEABILITY PAVEMENT SERVICEABILITY PAVEMENT DESIGN NEW, OVERLAY, REHABILITATION PAVEMENT DESIGN NEW, OVERLAY, REHABILITATION CONSTRUCT PAVEMENT

OR

OVERLAY PAVEMENT

OR

REHABILITATE PAVEMENT CONSTRUCT PAVEMENT

OR

OVERLAY PAVEMENT

OR

REHABILITATE PAVEMENT PAVEMENT MATERIALS PAVEMENT MATERIALS SYSTEMATIC PAVEMENT MAINTENANCE MAINTENANCE MANAGEMENT SYSTEM SYSTEMATIC PAVEMENT MAINTENANCE MAINTENANCE MANAGEMENT SYSTEM PAVEMENT MANAGEMENT SYSTEM PERFORMANCE MONITORING PAVEMENT MANAGEMENT SYSTEM PERFORMANCE MONITORING SAFE, SMOOTH, SURFACES HAPPY CUSTOMERS SAFE, SMOOTH, SURFACES HAPPY CUSTOMERS FEEDBACK

INVENTORY INVENTORY

LIFE-CYCLE COST ANALYSIS AND VALUE ENGINEERING

ASSET MANAGEMENT

COMPREHENSIVE FRAMEWORK FOR MANAGING COST-EFFECTIVE RESOURCE ALLOCATION DECISIONS PERFORMANCE EXPECTATIONS, INVENTORY AND PERFORMANCE INFORMATION,

ANALYSIS AND EVALUATION, PROJECT SELECTION AND PROGRAM IMPLEMENTATION

FLEXIBLE PAVEMENT REHABILITATION IS REQUIRED WHEN SATISFACTORY FUNCTIONAL PERFORMANCE CANNOT BE MAINTAINED THROUGH SYSTEMATIC PRESERVATION STRATEGIES AND/OR THE PAVEMENT STRUCTURE IS NOT ADEQUATE

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

JEGEL

HAPPY CUSTOMER ENROUTE BEIJING TO SHANGHAI

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN MALTON AIRPORT (GTAA) 1938

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN GTAA 1998 NEW TAXIWAY AND RUNWAY ASPHALT PAVEMENTS UNDER CONSTRUCTION

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

JEGEL

GTAA AIRBUS 380 GATE UNDER CONSTRUCTION 2005 CRUSHED RECYCLED CONCRETE FROM OLD TERMINAL TO THE LEFT

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRFIELD ASPHALT PAVEMENTS ARE SUBJECTED TO A WIDE RANGE OF AIRCRAFT LOADINGS HEAVY DUTY HOT-MIX ASPHALT IS REQUIRED FOR AIRFIELD ASPHALT PAVEMENTS SUBJECTED TO HEAVY AIRCRAFT LOADINGS

JEGEL

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRFIELD ASPHALT PAVEMENTS ARE SUBJECTED TO A WIDE RANGE OF AIRCRAFT LOADINGS HEAVY DUTY HOT-MIX ASPHALT IS REQUIRED FOR AIRFIELD ASPHALT PAVEMENTS SUBJECTED TO HEAVY AIRCRAFT LOADINGS

JEGEL

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRFIELD ASPHALT PAVEMENTS ARE SUBJECTED TO A WIDE RANGE OF AIRCRAFT LOADINGS HEAVY DUTY HOT-MIX ASPHALT IS REQUIRED FOR AIRFIELD ASPHALT PAVEMENTS SUBJECTED TO HEAVY AIRCRAFT LOADINGS

JEGEL

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THE ACTUAL LOADING OF CARGO IS ALSO IMPORTANT FOR HEAVY AIRCRAFT PARKED PERFORMANCE ON ASPHALT PAVEMENTS CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRFIELD ASPHALT PAVEMENTS ARE SUBJECTED TO A WIDE RANGE OF AIRCRAFT LOADINGS

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

JEGEL

CANADIAN AIRFIELD ASPHALT PAVEMENTS ARE SUBJECTED TO A WIDE RANGE OF CLIMATIC CONDITIONS

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRFIELD ASPHALT PAVEMENTS MUST BE ABLE TO RESIST SHOVING, RUTTING AND JET BLAST

JEGEL

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRFIELD ASPHALT PAVEMENT MUST BE DURABLE UNDER SEVERE OPERATING CONDITIONS OF LOADINGS, MAINTENANCE AND WEATHER

NEW ASPHALT PAVEMENT OVERLAY, BEIJING AIRPORT NOTE NEW TERMINAL BUILDING UNDER CONSTRUCTION FOR 2008 OLYMPICS FAIRLY OLD ASPHALT PAVEMENT OVERLAY, HAMILTON NOTE THAT THE DETERIORATION OF THE SHOULDER (NO LOADINGS) IS MORE SEVERE THAN FOR THE CENTRAL SECTION (KEEL) OF THE RUNWAY

JEGEL

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  • WORKABLE DURING PLACEMENT AND COMPACTION
  • CONTRIBUTE TO STRENGTH OF PAVEMENT STRUCTURE
  • RESIST PERMANENT DEFORMATION (RUTTING)
  • RESIST FATIGUE CRACKING
  • RESIST THERMAL CRACKING
  • RESIST THE EFFECTS OF AIR AND WATER (DURABILITY)
  • IMPERMEABLE TO PROTECT PAVEMENT STRUCTURE FROM

WATER

  • EASILY AND COST-EFFECTIVELY MAINTAINED

PLUS FOR SURFACE COURSE

  • 1. ADEQUATE FRICTIONAL PROPERTIES
  • 2. ACCEPTABLE SMOOTHNESS
  • 3. RESISTANCE TO ANTI-ICING AND DEICING CHEMICALS,

ICE AND SNOW CONTROL, JET BLAST, AND AVIATION FUEL AND HYDRAULIC OIL SPILLS

  • 4. RESISTANCE TO FOD POTENTIAL

ASPHALT PAVEMENT PERFORMANCE REQUIREMENTS FOR AIRFIELD DENSE GRADED HOT-MIX ASPHALT

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRFIELD ASPHALT AND CONCRETE PAVEMENT DESIGNS REQUIRE INPUT INFORMATION ON DESIGN AIRCRAFT LOADING(S), SUBGRADE CONDITIONS, DRAINAGE AND CLIMATE (ENVIRONMENT)

PLATE LOADING TESTS WERE COMMONLY USED IN THE PAST FOR SUBGRADE AND BASE SUPPORT CONDITION DETERMINATION

JEGEL

THE HWD IS NOW COMMONLY USED TO DETERMINE THE SUBGRADE AND BASE SUPPORT CONDITION AND Mr OF THE PAVEMENT COMPONENTS

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

A LIFE-CYCLE COST ANALYSIS, INCLUDING VALUE ENGINEERING, IS AN IMPORTANT COMPONENT OF AIRFIELD PAVEMENT DESIGNS

LIFE-CYCLE COST ANALYSIS SUMMARY

  • ECONOMIC ASSESSMENT OF COMPETING, TECHNICALLY SUITABLE

SYSTEMS OVER DESIGN LIFE

  • COST COMPONENTS

– INITIAL COSTS (CAPITAL COST) – MAINTENANCE COSTS – REHABILITATION COSTS – RESIDUAL/SALVAGE VALUE – USER COSTS (TRAFFIC DELAYS FOR INSTANCE)

  • PRESENT-WORTH METHOD

– DISCOUNT RATE – ANALYSIS PERIOD

  • DETERMINISTIC AND PROBABILISTIC METHODS

– JEGEL IS USING DETERMINISTIC METHODS BASED ON FHWA AND CRYSTAL BALL SOFTWARE

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VALUE ENGINEERING

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

VALUE ENGINEERING IS A PROCESS CONSISTING OF THE SYSTEMATIC APPLICATION OF ANALYTICAL, CREATIVE AND EVALUATION TECHNIQUES ON A MULTI-DISCIPLINED BASIS TO ACHIEVE THE DESIRED FUNCTIONS FOR A DESIGN OR PROCESS WHILE MAXIMIZING VALUE AND MAINTAINING OR IMPROVING REQUIRED FUNCTIONS.

JEGEL

BOGOTA EL DORADO INTERNATIONAL AIRPORT EXISTING RUNWAY 1994

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VALUE ENGINEERING

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

JEGEL

CONSTRUCTION OF THE NEW RUNWAY REQUIRED DIVERSION OF THE BOGOTÁ RIVER THIS DIVERSION REQUIRED A DETAILED ANALYSIS OF THE MOST APPROPRIATED TYPE RIGID OR FLEXIBLE – TO DEAL WITH POTENTIAL SETTLEMENTS

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VALIDATE THE INFORMATION AS IT IS ASSEMBLED ALTERNATIVES - MAKE A LIST OF ALL THE POSIBILITIES LOOK CLOSELY AT EACH IDEA - ANALYZE AND EVALUATE

POSSIBILITIES

USE SUITABLE ALTERNATIVES - DEVELOP INTO SOUND

RECOMMENDATIONS

ENHANCE UNDERSTANDING - PRESENT RECOMMEDATIONS AND

ASSIST IN CONCEPTUAL UNDERSTANDING

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

VALUE

JEGEL

BOGOTA EL DORADO INTERNATIONAL AIRPORT SECOND RUNWAY 2004

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ASPHALT PAVEMENT LIFE

INPUT INFORMATION INPUT INFORMATION PERFORMANCE CRITERIA PAVEMENT MODELS PERFORMANCE CRITERIA PAVEMENT MODELS PAVEMENT SERVICEABILITY PAVEMENT SERVICEABILITY PAVEMENT DESIGN NEW, OVERLAY, REHABILITATION PAVEMENT DESIGN NEW, OVERLAY, REHABILITATION CONSTRUCT PAVEMENT

OR

OVERLAY PAVEMENT

OR

REHABILITATE PAVEMENT CONSTRUCT PAVEMENT

OR

OVERLAY PAVEMENT

OR

REHABILITATE PAVEMENT PAVEMENT MATERIALS PAVEMENT MATERIALS SYSTEMATIC PAVEMENT MAINTENANCE MAINTENANCE MANAGEMENT SYSTEM SYSTEMATIC PAVEMENT MAINTENANCE MAINTENANCE MANAGEMENT SYSTEM PAVEMENT MANAGEMENT SYSTEM PERFORMANCE MONITORING PAVEMENT MANAGEMENT SYSTEM PERFORMANCE MONITORING SAFE, SMOOTH, SURFACES HAPPY CUSTOMERS SAFE, SMOOTH, SURFACES HAPPY CUSTOMERS FEEDBACK

INVENTORY INVENTORY

LIFE-CYCLE COST ANALYSIS AND VALUE ENGINEERING

ASSET MANAGEMENT

COMPREHENSIVE FRAMEWORK FOR MANAGING COST-EFFECTIVE RESOURCE ALLOCATION DECISIONS PERFORMANCE EXPECTATIONS, INVENTORY AND PERFORMANCE INFORMATION,

ANALYSIS AND EVALUATION, PROJECT SELECTION AND PROGRAM IMPLEMENTATION

FLEXIBLE PAVEMENT REHABILITATION IS REQUIRED WHEN SATISFACTORY FUNCTIONAL PERFORMANCE CANNOT BE MAINTAINED THROUGH SYSTEMATIC PRESERVATION STRATEGIES AND/OR THE PAVEMENT STRUCTURE IS NOT ADEQUATE

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

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  • USE OF PAVEMENT CONDITION INDEX
  • PAVEMENT CONDITION PREDICTION MODELLING
  • ANALYSIS OF ROUTINE AND MAJOR MAINTENANCE NEEDS
  • WORK PLAN BASED ON AVAILABLE BUDGET OR MAINTAINING

REQUIRED PAVEMENT CONDITION LEVEL

  • REPORTING LINKED TO GEOGRAPHIC INFORMATION SYSTEM

Micro PAVER 5.2

JEGEL

Micro PAVER GIS REPORT DISPLAY GTAA

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRPORT PAVEMENT MANAGEMENT SYSTEMS

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

DECISION TREE FOR FLEXIBLE PAVEMENT MAINTENANCE AND REHABILITATION

PREVENTIVE MAINTENANCE TREATMENT SURFACE WEAR SEVERITY ENVIRO CRACKING EXTENT

CRACK SEALING SURFACE TREATMENT CRACK SEALING +40 mm OVERLAY OR HIR CRACK SEALING MILL/FILL 40 mm OR HIR MILL/FILL 50 mm OR HIR MILL/FILL 50 mm OR HIR

FATIGUE CRACKING EXTENT RUTTING SEVERITY REHABILITATION TREATMENT

MILL/FILL 50 mm OR HIR MILL/FILL 40 mm OR HIR MILL/FILL 40 mm OR HIR MILL/FILL 50 mm OR HIR MILL/FILL 75 mm OR HIR (?) OR CIR AND OVERLAY (DESIGN) MILL 50 mm OVERLAY 75 mm OR HIR (?) MILL 75 mm OVERLAY 100 mm OR CIR AND OVERLAY (DESIGN) REMOVE, REPAIR BASE, REPAVE OR FDR AND OVERLAY (DESIGN) TOTAL RECONSTRUCTION OR FDR AND OVERLAY (DESIGN) MILL 100 mm OVERLAY 125 mm OR CIR AND OVERLAY (DESIGN) MILL 100 mm OVERLAY 125 mm OR CIR AND OVERLAY (DESIGN) MODERATE MODERATE LOW LOW LOW HIGH HIGH HIGH MODERATE MODERATE LOW HIGH MODERATE MODERATE LOW LOW LOW HIGH HIGH HIGH MODERATE MODERATE LOW HIGH

STRUCTURAL DETERIORATION STRUCTURE DRAINAGE ADAPTED FROM FP2

NO YES

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2000 4000 6000 8000 10000 12000 14000 16000 18000 20000 5 10 15 20 25 30 35 40 TEMPERATURE (°C) RESILIENT MODULUS (MPa)

HMA TOP FOAMED ASPHALT LOWER FOAMED ASPHALT BOTTOM FOAMED ASPHALT HMA AT 20°C TOP FOAMED ASPHALT AT 20°C MIDDLE FOAMED ASPHALT AT 20°C LOWER FOAMED ASPHALT AT 20°C TYPICAL RANGE OF RESILIENT MODULUS FOR DENSE-GRADED ASPHALT MIXTURES

FOAMED ASPHALT STABILIZATION IS A GROWING REHABILITATION TECHNIQUE FOR AIRPORT ASPHALT PAVEMENTS

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN RESILIENT MODULUS VERSUS TEMPERATURE RELATIONSHIP FOR HOT-MIX ASPHALT AND FOAMED ASPHALT, TYPICAL CORES, GEORGIA

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AIRPORT ASPHALT AND CONCRETE PAVEMENT REHABILITATION CASE STUDY

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

GTAA 05/23 RUNWAY REHABILIATION EVALUATION AND SELECTION THE GTAA USES A MicroPAVER BASED PAVEMENT MANAGEMENT SYSTEM THIS INCLUDES HWD LOAD RATING AND LASER PROFILOMETER SMOOTHNESS MONITORING

JEGEL

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SLIDE 25

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRPORT ASPHALT AND CONCRETE PAVEMENT REHABILITATION CASE STUDY

RUNWAY 05/23 PRIOR TO REHABILITATION IN 2004 AND 2005

JEGEL

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METHODOLOGY

AIRPORT ASPHALT AND CONCRETE PAVEMENT REHABILITATION CASE STUDY

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

  • ENGINEERING SITE VISIT
  • REVIEW OF PAVEMENT HISTORY
  • PAVEMENT CONDITION SURVEY – MICROPAVER, PAVEMENT

DISTRESSES, PCI

  • FWD LOAD/DEFLECTION TESTING – DEFLECTION, ELASTIC MODULUS,

LOAD TRANSFER, PRESENCE OF VOIDS

  • GEOTECHNICAL INVESTIGATION – PAVEMENT CORING AND

BOREHOLE/PROBEHOLE INVESTIGATION

  • LABORATORY TESTING
  • SYNTHESIS OF FINDINGS
  • REHABILITAION METHODS SELECTION (PAVEMENT DESIGN, VALUE

ENGINEERING AND LIFE CYCLE COST ANALISIS)

JEGEL

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SLIDE 27

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

EVALUATION OF PAVEMENT CONDITION

AIRPORT ASPHALT AND CONCRETE PAVEMENT REHABILITATION CASE STUDY

EVALUATION OF ASPHALT PAVEMENT SECTION CRACKING EVALUATION OF CONCRETE PAVEMENT SECTION KEYWAY

JEGEL

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PAVEMENT DESIGN ALTERNATIVES KEEL SECTION

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRPORT ASPHALT AND CONCRETE PAVEMENT REHABILITATION CASE STUDY

  • CONCRETE PAVEMENT RESTORATION (CPR) AND

THIN HMA OVERLAY

  • THICK OVERLAY OVER EXISTING CONCRETE

PAVEMENT

  • CONCRETE PAVEMENT RUBBLIZATION AND THICK

HMA OVERLAY

  • CONCRETE PAVEMENT RECONSTRUCTION

JEGEL

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LIFE-CYCLE COST ANALYSIS

ALTERNATIVE

INITIAL CONSTRUCTION MAJOR MAINTENANCE RESIDUAL VALUE SALVAGE VALUE 30-YEAR LCC, PW CPR AND THIN HMA OVERLAY

$2,712,900 $2,181,312

  • $500,401
  • $41,822

$4,351,989

THICK HMA OVERLAY

$2,660,875 $1,253,685

  • $380,928
  • $41,020

$3,492,612

RUBBLIZATION AND THICK HMA OVERLAY

$3,313,500 $1,125,026

  • $380,774
  • $51,112

$4,006,641

CONCRETE PAVEMENT RECONSTRUCTION

3,155,400

  • $48,643

$3,106,757

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRPORT ASPHALT AND CONCRETE PAVEMENT REHABILITATION CASE STUDY

SELECTED FOR LOGISTICAL (OPERATIONS) REASONS

JEGEL

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

AIRPORT ASPHALT AND CONCRETE PAVEMENT REHABILITATION CASE STUDY

RUNWAY RETURNED TO FULL AND SMOOTH SERVICE

JEGEL

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PLACING LOWER COURSE HIGH PERFORMANCE HOT-MIX ASPHALT OVER PREPARED PORTLAND CEMENT CONCRETE SLABS WITH A POLYMER MODIFIED EMULSION TACK COAT, GTAA CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

NEW ASPHALT PAVEMENT CONSTRUCTION METHODS

JEGEL

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NEW PAVING EQUIPMENT DEVELOPMENT

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN ASPHALT PAVERS WITH THE ABILITY TO APPLY EMULSIFIED ASPHALT TACK COAT OR PREFERABLY HOT ASPHALT CEMENT TACK COAT

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WATER TRAPPED UNDER THE CRACK SEALANT, RUNWAY 08-26, CFB GOOSE BAY CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

IMPROVED CRACK SEALANT METHODS DEVELOPMENT

JEGEL

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SLIDE 34

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

IMPROVED CRACK SEALANT METHODS DEVELOPMENT

JEGEL

SAMPLE WITH ROUTED RESERVOIR FILLED WITH CRACK SEALANT AND THEN CONDITIONED IN WATER FOR 24 HOURS READY FOR TESTING IN THE APA

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SLIDE 35

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

IMPROVED ASPHALT LIFT INTERFACE PERFORMANCE

JEGEL

APA ASPHALT CONCRETE LAYERS INTERFACE SHEAR RESISTANCE AND ‘LARGE SLAB’ RESISTANCE TO RUTTING TESTS CONFIGURATION (70 mm WIDE SOLID RUBBER WHEEL, SLAB 300 mm x 300 mm)

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

RESISTANCE OF HOT-MIX ASPHALT TO ANTI-ICING AND DEICING CHEMICALS

JEGEL

UREA DAMAGE TO HMA WITH A MOISTURE SUSCEPTIBILITY PROBLEM, DND GREENWOOD

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2 4 6 8 10 12 1000 2000 3000 4000 5000 6000 7000 8000 LOADING CYCLES DEFORMATION (mm) Air Water Chemical 1 Chemical 2 Chemical 3 Chemical 4

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN PERMANENT DEFORMATION (APA) OF HOT-MIX ASPHALT IN DIFFERENT ANTI-ICING AND DEICING CHEMICALS

RESISTANCE OF HOT-MIX ASPHALT TO ANTI-ICING AND DEICING CHEMICALS

EVALUATION USING THE ASPHALT PAVEMENT ANALYZER

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SLIDE 38

No Lime Lime Treated

NEW ASPHALT PAVEMENT CONSTRUCTION METHODS

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

JEGEL

FIELD TESTING OF ASPHALT CONCRETE PAVEMENT WITH IMPACT-ECHO EQUIPMENT TO DETERMINE CRACKING AND INTERFACE CONDITIONS JEGEL IN ASSOCIATION WITH McMASTER UNIVERSITY

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CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN HYDRATED LIME SURFACE TREATMENT TO REDUCE ASPHALT PAVEMENT TEMPERATURE (BLACK BODY ABSORPTION)

NEW ASPHALT PAVEMENT TESTING METHODS

JEGEL

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NEW ASPHALT PAVEMENT DISTRESS TYPE

TOP-DOWN CRACKING OF ASPHALT CONCRETE IS NOT GENERALLY CONSIDERED IN CURRENT ASPHALT DESIGN PROCEDURES IT IS NOW BEING CONSIDERED FOR LONG-LIFE ASPHALT PAVEMENTS TOP-DOWN CRACKING HAS NOT BEEN STUDIED FOR AIRFIELDS

ASPHALT CONCRETE

TRADITIONAL FATIGUE CRACKING

ASPHALT CONCRETE

TOP-DOWN CRACKING (TDC) CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

JEGEL

CRACKING OF RELATIVELY NEW ASPHALT PAVEMENT HOTHOT, INNER MONGOLIA TRANSVERSE THERMAL CRACK WITH TOP DOWN CRACKING (TDC) IN WHEELPATH

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SLIDE 41

ACTUAL CURRENT PRACTICE?? STATE-OF-PRACTICE STATE-OF-THE-ART

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

NEW ASPHALT PAVEMENT DESIGN CONCEPTS

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AASHTO 2002 FOR ASPHALT PAVEMENT DESIGN

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN AASHTO’s 2002 MECHANISTIC-EMPIRICAL DESIGN METHOD IS A HIERARCHICAL OR MULTI-LEVEL PROCEDURE BASED ON DESIGN DATA REQUIREMENTS REFLECTING ROADWAY CLASSIFICATION. A SIGNIFICANT CHANGE FROM PREVIOUS METHODS IS THE USE OF VEHICLE AXLE LOAD SPECTRA (AXLE LOAD DISTRIBUTION) RATHER THAN EQUIVALENT SINGLE AXLE LOADS (ESALs) TO EVALUATE PAVEMENT LOADING OVER SERVICE LIFE. AASHTO’s 2002 GUIDE ALSO INCORPORATES THE LATEST TECHNOLOGIES IN MATERIALS CHARACTERIZATION AND IN THE USE OF CLIMATE DATA THROUGH THE APPLICATION OF AN ENHANCED INTEGRATED CLIMATE MODEL (ICM). BY USING THE ICM, VARIATIONS IN MATERIAL AND SUBGRADE PROPERTIES SPECIFIC TO LOCAL TEMPERATURES, HUMIDITY AND PRECIPITATION ARE ALL FACTORED INTO THE DESIGN PROCESS.

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SLIDE 43

AASHTO 2002 FOR ASPHALT PAVEMENT DESIGN GENERAL DESIGN APPROACH

MATERIALS

™

PROCESS RAW INPUT FOR DISTRESS MODELING

™

ASSEMBLE INPUT AND TRIAL DESIGN INFORMATION FOR EACH DISTRESS MODEL

™

STRESS DEFLECTION ANALYSIS

CALCULATE STRESS ∪ CALCULATE DAMAGE ∪ PREDICT AMOUNT OF DISTRESS

™

PREDICT SMOOTHNESS OVER TIME

™

CHECK PREDICTED PERFORMANCE AGAINST DESIGN STANDARDS

™

[ REVISE DESIGN AS NECESSARY ] TO SATISFY DESIGN STANDARD

™

DESIGN COMPLETE

TRAFFIC ENVIRONMENT

CAPTG, TORONTO SEPTEMBER 2005 HMA/PAVEMENT DESIGN

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QUESTIONS?

JEGEL

www.jegel.com JEGEL - ISO 9001 jemery@jegel.com

THE TECHNICAL ASSISTANCE OF ALAIN DUCLOS IS GRATEFULLY ACKNOWLEDGED MICROSURFACING OF THE ASPHALT RUNWAY AT THE TORONTO ISLAND AIRPORT

YOU WILL SEE THE CITY AND ISLAND AIRPORT LIGHTS MONDAY!

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JEGEL

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JEGEL

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JEGEL