Implementing An effective Airport Pavement Management System

13th International O&M Conference in the Arab Countries ,17-19 Nov 2015 Hazim M Abdulwahid , MSC, MBA

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‒ What is Pavement Engineering

‒ Why Airports Pavement Management System

‒ Building Airports Pavement Management System

‒ Conclusion

Content

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Our Airports

TODAY…

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Traffic Growth

Funding

New Aircrafts

Environment

Airports Expansion

Aging

Pavement Materials Classification, quality assurance testing

(specifications), material design

Pavement Design Design of Structural layers for New Pavements and

Pavement Rehabilitation

Assess in-situ pavement material properties and layer

thickness

Pavement

Construction

Construction practices of New Pavements and

Pavement Rehabilitation including specification

development and quality assurance

Pavement

Management

Monitoring Post-construction condition, timing

preventive preservation and rehabilitation

treatments, and economic analysis of

alternatives

Pavement Research Research to improve all of the above

Pavement Engineering- pavement management

Why do we need to “Manage” our Pavements?

o To preserve our infrastructure value

Key component of the asset

Management

o To develop “optimum” pavement

preservation and renewal programs

Better Use of Available Resources

o To provide a level of service that the

user considers appropriate

State of Good Repair

Okay , Maybe We Can’t Let it Go for a Few More Years

Pavement Maintenance Management Basic Questions

- Where ?

Where to maintain my pavement network

- When ?

When should be maintained

- How ?

How it should be maintained

Airports Pavement Management System- Understanding

A Pavement Management System (PMS) is designed to

provide objective information and useful data for analysis so

that Airports Pavement managers can make more consistent,

cost-effective, and defensible decisions related to the

preservation of Airport pavement.

Pavement Management is Management !

Airport Pavement Management System- Theory

An airport’s Pavement Management System (APMS) not only evaluates the

current condition of the airfield pavements, but also predicts its future

condition.

By projecting the rate of deterioration, a life cycle cost analysis can be made

for various maintenance alternatives.

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Determine the optimal time for

applying the best alternative.

Airports Pavement Management - Subsystems

• Goals & Policies

o Performance measures

o Budget

o Guide analytical process

o City specific

• Inventory / Data Collection

o Network Definition

o NDT and inspection

o Storage / retrieval

o Analysis (GIS, GPS)

• Condition Assessment

o Deterioration modeling

o Performance modeling

• Alternative Evaluation

o Trade-off analysis

o Cost/benefit analysis

o Life Cycle Cost

o Risk Analysis

• Selection and implementation

• Monitoring / Feedback

Pavement Management System – Business Process

DATABASEIN

VE

NT

OR

Y

CONDITION

USAGE

MAINTENANCE STRATEGIES

INFORMATION MANAGEMENT

NETWORK-LEVEL ANALYSIS

TOOLS

PROJECTLEVEL

ANALYSIS (Design)

WORK PROGRAM

EXECUTION

PERFORMANCE

MONITORING

FEEDBACK

CONDITION ASSESSMENT

PRODUCTS

NETWORK-LEVEL

REPORTS

Performance Assessment

Network Needs Facility Life-cycle Cost Optimized M&R ProgramPerformance-based

Budget

CONSTRUCTION

DOCUMENTS

NEEDS ANALYSIS

PRIORITIZATION/ OPTIMIZATION

PERFORMANCE PREDICTION

PROGRAMMING (PROJECT SELECTION)

Goals & Policies Performance

/Economic / Social & Environmental

Budget Allocations

STRATEGIC ANALYSIS

GRAPHICAL

DISPLAYS

Pavement Definition and Inventory

Create a database of all airfieldpavement:

• Runway• Taxiway,• Apron• other aircraft movement areas

Provides a basis for budgetdevelopment, and maintenanceprogram.

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Airport Name

Feature (Runway , Taxiway , Apron)

Feature Identification Number

Length and Width

Pavement Type , Structure

Shoulder Type and Width

Marking

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Pavement Definition and Inventory – Pavement Inventory

Number of daily operations andtype of aircrafts using thepavement .

necessary when analyzingprobable causes of thedeterioration and when toconsider alternatives M&Rprocedures.

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Pavement Definition and Inventory – Traffic History

Mapping the airfield pavementstructural composition (material andthickness), subsequent overlays,rehabilitation, etc.

“As-built” records should provide thisinformation; or coring of the pavementsection

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Subgrade

P

a

v

e

m

e

n

t

Pavement Definition and Inventory – Structural Inventory

History of maintenance performed and itsassociated cost “ provide valuable informationon the effectiveness of various maintenanceprocedure on the different airport pavements”.

The cost of each maintenance project isnecessary when performing lifecycle analysis.

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Pavement Definition and Inventory- maintenance history

Pavement Definition and Inventory- pavement definition

Network (individual airport)

Branches (Runway , Taxiway ,

Apron )

Sections (Location , Construction

type , Maintenance History,

Traffic , condition )

Sample Units ( Inspection unit )

1616

Apron

Taxiway

Runway

5 4 3 2 1

Sample Unit

Section

Pavement

Designation

Section

Number

Sample Unit

Number

Subdivision

R1634 02 03 C

Runway 16-

34

Section 02 Sample 3 Central

Branch ID Section ID

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Pavement Definition and Inventory

Airport Pavement Condition Survey

Basis for the performance and economic analysis.

Maintenance Programs

Assess the state of being, or readiness for use .

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Assessing the current pavement condition of the Analysis Sections Determining the “health”

of the network.

Pavement Condition “Quality measures and Performance Indicators “

Roughness

(PSI, IRI)

Physical

Condition

Safety and

Sufficiency

Structural Integrity

/ Load-Carrying Capacity

Service and User

Perception

Deflection

(FWD)

Friction (FN)/

Macro texture

Distress

(PCI)

Pavement

Subsurface

Pavement Layer

Structure

Pavement Condition Survey- pavement surface distresses

Surface of the pavement is evaluated

manually, or automated equipment

to identify:

Type of distress

Severity.

Quantity or extent of distress present

on the pavement surface.

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sample area to be inspected

Pavement Condition Survey – Pavement Condition Index

Standards:

Federal Aviation Administration’s (FAA’s) Advisory Circular (AC) 150/5320 -6E, Airport Pavement Design and Evaluation

ASTM D5340 - 12: Standard Test Method for Airport Pavement Condition Index Surveys

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Pavement Condition Survey – Pavement condition index

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Pavement Condition Index (PCI)

Runway: 16L/34R

Section

No.

PCI Index Rating

1A 83 Very Good

1B 51 Fair

1C 68 Good

2A 75 Very Good

2B 62 Good

2C 72 Very Good

3A 61 Good

3B 50 Fair

3C 64 Good

Legend

Very Good

Good

Fair

0

10

20

30

40

50

60

70

80

90

100

20 80 140 200 260 320 380 440 500 560 620 680 740 800 860 920 980 1040

1100

1160

1220

1280

1340

1400

1460

1520

1580

1640

1700

1760

1820

1880

1940

2000

2060

2120

2180

2240

2300

2360

2420

2480

2540

2600

2660

2720

2780

2840

2900

2960

3020

3080

3140

3200

3260

3320

3380

3440

3500

3560

3620

3680

3740

3800

3860

3920

3980

PCI

Distance (M)

Section A

Section B

Section C

Borderline for Non-Critical and Critical PCI for Airfield

Pavement Condition Survey - Pavement Roughness

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International Roughness Index (IRI)

Boeing Bump Index (BBI)

Runway roughness evaluation to be carriedout in accordance to the guideline by theFAA Advisory AC no. 150/5380 – 9

Pavement Condition Survey- Skid Resistance

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Assessment of theCoefficient ofFriction of the wetPavement Surface .

Evaluations to be carried out in accordance with the FAA AC 150/5320-12

Pavement Condition Survey – Structural Capacity

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Falling Weight Deflectometer (FWD) , tomeasure the vertical deflection response of asurface to an impulse load.

Calculate pavement properties :

Bearing Capacity

Layer Thickness

E Moduli

Expected Surface Life

ASTM D4694-03 Standard and FAA Advisory circular 150/5370-

11A

Pavement Condition Survey- Pavement layers

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GPR in Airport Pavement Management System:

Thickness of pavement layers

Reinforcing steel

Density variations

Subsurface moisture

Voids

APMS Performance and Economic Analysis

0

20

40

60

80

100

2000 2002 2004 2006 2008 2010 2012 2014 2016 2018 2020

Dis

tres

s In

dex

Years

Prediction Model

Default Distress Model

Triggers

Current Time

Do Nothing

Pavement Preservation

Rehabilitaton

Reconstruction

APMS Performance and Economic Analysis

Remaining Life Analysis

APMS Performance and Economic Analysis

Multi Year Treatment Choices and Prioritization

Trigger Point for

Treatment 1

Age or Traffic Loads

Pa

ve

me

nt

Co

nd

itio

n In

de

x

Trigger Point for

Treatment 2

Treatment 2 in Year Y

at $S Cost

Existing Performance Treatment 1 in Years X

and Z at $ Cost

Preservation

Rehabilitation

Reconstruction

APMS Performance and Economic Analysis

Preservation Treatments Cost Per L/ Km

Slurry seals $14,080

Micro surfacing $17,600

High-performance thin overlays $45,760

Rehabilitation Treatments Cost Per L/ km

Minor (functional): mill 2 in. and overlay 2 in. $107,430

Major (structural rehab): mill 2 in. and overlay >2 in. $154,106

Reconstruction Cost Per L/ Km

Partial $422,400

Full $689,920

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Treatment Types and Costs

APMS Performance and Economic Analysis

Asphalt

Pavement

>=60 and <85

< 60 or below

Load-Associated

Structural

Deterioration

Not Present

PresentStructural

OverlayMajor Rehab

Functional

OverlayMinor Rehab

Pavement Preservation

Pavement

Condition

Index

PCI <=20 Reconstruction

>=85 Do-Nothing

Decision Trees/Treatment Rules

Airport Pavement Management System

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Decision Trees/Treatment Rules

APMS Performance and Economic Analysis

APMS Performance and Economic Analysis

0

10

20

30

40

50

60

70

80

90

100

0 1 2 3 4 5 6 7 8 9 10

Co

nd

itio

n

Age

Policy Decisions can be based on the average projected condition at given budget levels for a single asset or for the entire networkNetwork Performance Budget Scenarios

Do nothing Spend $1 million Spend $3 million

Good

Poor

Current Condition

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Pavement Network Performance Scenario

APMS Outcome

Most cost effective Maintenance Programs

Current and predicted Airports Pavement Condition

0

10

20

30

40

50

60

70

80

90

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr

East

West

North

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“The Most Effective Pavement Maintenance Program Through Pavement Life Cycle with the least possible cost “

Section Year Cost

32 2016 $100,000

47 2019 $237,999

Planning and Statistics

Budget

Sophistication

Data Collection

Analyses

Equipment

Maintenance

PAVEMENT

MANAGEMENT

SYSTEMS

$

Choosing What’s Right for YOU

Which Pavement Management System to Select ?

Conclusion

There is a need to preserve our airfield pavement network assets

Asset Management System is a tool for better assets preservation

There is no system that can fit all, each organization should choose the system that meets its needs and challenges

It is important to realize that it is not a software but a complete integrated system

Feed back and continues improvement

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Thank you

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