US Army Airfield Pavement Assessment Program

21 Pages·2005·9.23 MB·English

US Army Airfield Pavement
Assessment Program
Geotechnical and Structures Laboratory
Vicksburg, MS
HaleyParsons
LuluEdwards
EileenVelez-Vega
ChadGartrell
US Army Corps of Engineers
Background
(cid:127) Initiated in May 1982 by the Department of the Army
(cid:127) Requested by FORSCOM, TRADOC, and AMC
(cid:127) Army Airfields (AAFs) last evaluated in the 1960s
(cid:127) Pavements designed
for WWII and
Korean War era
aircrafts
(cid:127) Now required to
support heavier and
larger aircraft
US Army Corps of Engineers
1941-1993 AAF Mission Aircraft
11994433
11994411
BB--2299,, 110055,,000000 llbb
BB--1177,, 6655,,000000 llbb
11999933
CC--1177,, 558800,,000000 llbb
11996699
11996644
CC--55AA,, 883377,,000000 llbb
CC--114411,, 332233,,000000 llbb
11995555
CC--113300,, 115555,,000000 llbb
US Army Corps of Engineers
Significance
(cid:127) Determines the overall mission readiness of the AAFs in
support of the Army’s force projection mission
(cid:127) Provides technical data required to quantify airfield
pavement maintenance, construction, and repair needs
(cid:127) Data assists in optimal use of available funding for
maintenance and repair (M&R)
(cid:127) Provides information for establishing work plans necessary
to reach and maintain AR 420-72 facility condition
requirements
(cid:127) Provides data for runway-bearing strengths
US Army Corps of Engineers
Why ERDC?
(cid:127) Leadership in pavement design, evaluation, and research
(cid:127) Expertise
(cid:127) Military and security issues
(cid:127) Database expansion and research validation
(cid:127) Consistency
(cid:127) Equipment
– Dynatest heavy weight deflectometer (HWD)
– 2 Dynatest falling weight deflectometers (FWDs)
– dynamic cone penetrometer (DCP)
(cid:127) State of the art equipment implementation
– ground-penetrating radar (GPR)
– portable seismic pavement analyzer (PSPA)
US Army Corps of Engineers
GERMANY
Coleman,Grafenwoehr,Giebelstadt,
ALASKA Hohenfels,Hanau,Illesheim,Ansbach, KWAJALEIN
andWiesbadenAAFs
AllenAAF BucholzAAF
WainwrightAAF DyessAAF
GrayAAF
Selah
AAF Sparta/McCoy Wheeler-Sack MuirAAF
AAF AAF
PhillipsAAF
Amedee
AAF
ForneyAAF
GodmanAAF DavisonAAF
ButtsAAF
ShermanAAF
MichaelAAF
Redstone
FelkerAAF
AAF
FortCampbell
MarshallAAF
CampbellAAF&SabreAHP
LagunaAAF
HenryPostAAF
FortBragg
HAWAII
Simmons&MackallAAFs
LibbyAAF
BradshawAAF
WheelerAAF BiggsAAF
Lawson
AAF FortStewart
PolkAAF
JAPAN FORTHOOD FortRucker Hunter&WrightAAFs
KastnerAAF RobertGray&Hood CairnsAAF,Lowe&
AAFs HancheyAHPs
SOUTH
KOREA
A-306AAF
A-511AAF
US Army Corps of Engineers
Inspection Intervals
(cid:127) Critical Category I airfields
– structural evaluation including nondestructive testing
(NDT) every 5 years
– pavement condition survey to determine the pavement
condition index (PCI) every 5 years
(cid:127) Category I airfields and instrumented heliports
– structural evaluation including NDT every 8 years
– pavement condition survey to determine the PCI every 4
years
US Army Corps of Engineers
Objectives
(cid:127) Structural evaluation
– determines allowable aircraft loads and design traffic
FWD/HWD
(cid:1)
DCP
(cid:1)
(cid:127) Visual evaluation
– pavement condition survey
– identify M&R
(cid:127) Test new technologies
– PSPA
– GPR
US Army Corps of Engineers
FWD/HWD
(cid:127) Trailer mounted, nondestructive, impact load device
(cid:127) Dynamic force applied to the pavement
– drop height of 0-15.7 in
– 0-50,000 lbs
– 25-30 ms duration
(cid:127) Applied force and pavement deflections are measured
US Army Corps of Engineers
DCP
(cid:127) Determines strength (CBR) of
underlying soil layers
(cid:127) Thickness is delineated from
changes in strength
(cid:127) 4 main components
– cone, rod, anvil, hammer
(cid:127) Procedure:
– 1-in drilled hole
– drop hammer until penetration
depth is 20-30 mm
– record number of blows and depth
– penetration/mm is correlated to CBR
US Army Corps of Engineers