NON DESTRUCTIVE AIRPORT PAVEMENT TESTING
Federal Aviation Administration
Presented to: 2012 FAA Airport Pavement Working Group Meeting By: Al Larkin, Airport Technology, R & D Date: April 25, 2012
NDT Presentation Outline
Airport Pavement Roughness to be presented by Dr. Hayhoe following NDT Nondestructive Airport Pavement Testing Survey Vehicle High Tire Pressure Grooving and Trafficking Improvements to BAKFAA Heavy Weight Deflectometer Roundup Update to Follow this Presentation
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
Proposed Use of the FAA NDT Survey Vehicle
The van is being used as a non-destructive pavement testing platform for airport pavement, The van is to be used in part to assess new and existing non-destructive airport pavement testing technology and software, The van will also be used to acquire non-destructive airport pavement testing data at international and general aviation airports for use at NAPTF and by NAPTF and contractor personnel.
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
Status of the NDT Van
After final outfitting, the van will have pavement imaging, Ground Penetrating Radar, GPS, and laser profiling capabilities. The vehicle was purchased in 2009 and delivered in June 2010. The NDT van was delivered in September 2011. The vehicle has completed interior modifications locally and imaging equipment has been used to assess CC-6.
Non Destructive Airport Pavement Testing April 25, 2012 Federal Aviation Administration
FAA NDT Survey Vehicle
Laser Based Pavement Imaging System
Non Destructive Airport Pavement Testing April 25, 2012 Federal Aviation Administration
FAA NDT Survey Van
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
2D Image from CC-6
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
3D Image from CC-6
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
2D Image from CC-6 Grooving
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
Grooving and Trafficking High Tire Pressure (HTP) Area
Construct transverse rectangular and trapezoidal grooves in the HTP area. Both types of grooves will constructed in heated and unheated sections of the HTP. Profile before and after grooving. Continue to profile at frequent intervals during trafficking. Groove deviations will be monitored by Selcom laser profiles and physical measurement using tape measure and depth gage.
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
10
10
Grooving and Trafficking High Tire Pressure (HTP) Area
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
11
11
Grooving and Trafficking High Tire Pressure (HTP) Area
HIGH TIRE PRESSURE TESTING AREA
UNHEATED 2
HEATED 2
T R A N S I T I O N
HEATED 1
UNHEATED 1
Station
2 + 97.5
2 + 77.5
2 + 42.5
2 + 37.5
2 + 02.5
1+ 82.5
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
12
12
Grooving and Trafficking High Tire Pressure (HTP) Area
PROPOSED AREAS TO BE GROOVED IN HIGH TIRE PRESSURE TESTING AREA
fiber optic (2 + 10, 2.5) o HEATED 1
o temperature tree (1 + 96, 6)
UNHEATED 1
CL
Grooved area approx. 15 rectangular 15 trapezoidal
Grooved area approx. 15 rectangular 15 trapezoidal
2 + 02.5 transition between unheated and heated Proposed grooving areas: Heated test item sta. 2 + 03 to 2 + 08 Unheated test item sta. 1 + 96.5 to 2 + 01.5 proposed grooving areas account for 55" drum with approximately (15) rectangular grooves and (15) trapezoidal
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
13
13
NAPTF Area for HTP Grooving
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
14
14
Improvements to BAKFAA
ITEMS IN IMPROVED BAKFAA
Redesign as a .Net Application Capability to Process Files in Batch Mode Extended List of Supported File Formats AASHTO PDDX File Conversion Feature Calculation of Joint Transfer Efficiency Provided Compatibility of LEAF with FAARFIELD Output Results to an Excel File Interface Toggle between English and Metric Verification of all GUI Features Incorporation of Optimization Constraints
ITEMS COMPLETED
X X X X X X X X X (ongoing) TBD
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
15
15
Supported File Types
Equipment Manufacturer Proprietary File Structure R80 F20,F25 FwdWin Associated file extensions .fwd, .hwd .fwd, .F20, .F25 .fwd, .txt .fwd, .hwd .fwd, .hwd, .dat .fwd, .hwd, .dat .txt, .fwd .csv .ddx
Dynatest
KUAB JILS
KUAB M3 M5
Carl Bro PaveTest AASHTO
CarlBro PaveTest PDDX
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
16
16
Joint Transfer Efficiency
Approaching Loaded Deflection at the center of the plate compared with deflection at first sensor behind center (Sensor 3 at Offset=12.00)
Departing Loaded Deflection at the center of the plate compared with deflection at first sensor in front of center (Sensor 1 at Offset=-12)
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
17
17
Batch Mode Backcalculation
Save calculation results as .csv file Multiple deflection record selection
Non Destructive Airport Pavement Testing April 25, 2012
Graphical representation of calculated Modulus by selected record index
Federal Aviation Administration
18
18
F/HWD Round Up
Non Destructive Airport Pavement Testing April 25, 2012
Federal Aviation Administration
19
19
Contact Information
Al Larkin Federal Aviation Administration William J. Hughes Technical Center National Airport Pavement Test Facility Phone: (609) 485 5552
Email: albert.larkin@faa.gov
Non Destructive Airport Pavement Testing April 25, 2012 Federal Aviation Administration
20
20
