implementing an effective airport pavement management...
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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
1
‒ What is Pavement Engineering
‒ Why Airports Pavement Management System
‒ Building Airports Pavement Management System
‒ Conclusion
Content
2
Our Airports
TODAY…
3
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.
8
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.
11
Airport Name
Feature (Runway , Taxiway , Apron)
Feature Identification Number
Length and Width
Pavement Type , Structure
Shoulder Type and Width
Marking
12
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.
13
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
14
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.
15
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
17
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 .
18
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.
20
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
21
Pavement Condition Survey – Pavement condition index
22
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
23
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
24
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
25
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
26
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
30
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
32
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
33
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
34
“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
36
Thank you
37
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