Geosynthetics Testing at NAPTF
Transcript of Geosynthetics Testing at NAPTF
Federal Aviation Administration
Presented to:
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Date:
Geosynthetics Testing at NAPTF
Construction Cycle 9
REDAC
Ryan Rutter
September 8, 2021
Federal Aviation Administration
Geosynthetics Initiation H.R.4 of the 115th Congress –
FAA Reauthorization Act of 2018 Received May 8, 2018
Signed October 5, 2018 540 pages
AN ACT: To reauthorize programs of the Federal Aviation Administration, and for other purposes. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled
Title V - Miscellaneous
SEC. 558. GEOSYNTHETIC MATERIALS.
The Administrator of the Federal Aviation Administration, to the extent practicable, shall encourage the use of durable, resilient, and sustainable materials and practices, including the use of geosynthetic materials and other innovative technologies, in carrying out the activities of the Federal Aviation Administration.
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Program Overview
• Literature Review
• Incorporate into AC 150/5370-10H Update
• Establish Draft Specification for Use of Geosynthetics
• Obtain/Analyze Data through Full-Scale Testing
• Modify Specifications based on Full-Scale Testing
• Include Geosynthetics into FAARFIELD
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Federal Aviation Administration
Definition
• Geosynthetics – Synthetic polymeric materials that are specifically
manufactured to be used in geotechnical and geoenvironmental applications
• Types – Geotextiles, Geogrids, Geomembranes, Geonets,
Geocomposites, Geocells, Geosynthetic clay liners, Erosion control products, Many others (Geofibers, Geofoam, Geopipes, Paving interlayers)
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Geosynthetic Functions
• Separation • Reinforcement • Stiffening • Filtration • Barrier • Drainage • Protection
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TRANSITION
I FATfGUE MODEL
LFS-1N
EX G E :1'2" ISTIN 18"WID D
0 -33,00'
-20 0+00 0+45
• • • 154in. ---~ Ii_ 0.00' -
57 in.
• • • 154in. ---~ 57 in. 33,00' I 1
LFS-1S
FATIGUE MODEL
LFS--2N T NSITION
I GEOSYNTHETfCS I LFc-JN
H N\ 01-60 1+05 1+20 1+ 5
• • • 154in. --- • • • 154in. ---~ ~
57 in. 57 in.
• • • 154in. --- • • • 154in. ---~ ~
57 in. 57 in. I I I I
LFS-25 LFC--35
I PERMEABLE BASE I LF5--4N c SITIO!-4
1+80 2+25 2+40
I I I I I ---1 I I 54 in.l I
--- I I ~ I I 57 in. : I I I I I I --- . : !541n.1 --- I ~ I
l 57 in. I I I
LFC-45
O\lERLOAO
LFc-5N T NSITION
2+,85 2+~5 ,
l ~
: 154in. I I I I I I I I
: 154in. I I I I I I I
LFC-55
NAPTF Construction Cycle 9 (CC9)
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[Geogrid & Fabric] St. 1 +20- 1 +65 North
5.1 inch P-401
7.7 inch P-209
Geogrid Class B
29.1 inch P-154
Separator Fabric, Class 2
Clay Subgrade ( CBR =5)
LFC-3S [Fabric Only] St. 1 + 20 - 1 +65 South
5.2 inch P-401
7.7 inch P-209
29.1 inch P-154
Separator Fa bric, Class 2
Clay Subgrade ( CBR =5)
LFC-4S [Control] St. 1 +80 - 2+25 South
5.2 inch P-401
7 .8 inch P-209
29.1 inch P-154
Clay Subgrade ( CBR 5)
Federal Aviation Administration
Pavement Structures
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r;r., 4 = J.-4 QJ ,.J ,.J ~ ~ 3
J.-4 QJ ~
= ~ 2 ~ --~ -~i--0 J.-4 1 i--QJ --~ ..0 i--e --Z 0
...--
4/5/2021 5/5/2021 6/5/2021
• Wanders
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"' 10 ., "' "' 8 ..
p..
'cl 6 ... ., 'e 4 ::s Z 2
0
i--
7/5/2021 Date
I I I I 11.588 12.441 13.294 14.147 15 15.853 16.706 17.559 18.412
± Transverse Offset (ft)
10,000 ~ r;r., r;r., ~ ~
7,500 ~ ~ 0 ,--
J.-4 -- QJ ..0
5,000 e = :z QJ
2,500 > •,-( ,.J ~ -= 0 e = 8/5/2021 9/5/2021 u
- Cumulative Passes
Trafficking
• Started on April 5, 2021 • 129 wanders applied (8,514 passes) as of Sept. 7
Section 5 Trafficking & NAPTV
Repair
Federal Aviation Administration
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2.5
2
bl)
= i 1 = ~
0.5
0 0 1,000 2,000 3,000 4,000
Number of Passes 5,000
--e--Geogrid & Fabric -¼-Fabric Only -a-Control
6,000 7,000 8,000
Rutting using Straightedge • No cracking • Only rutting
Federal Aviation Administration
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FATIGUEMOOEL T-1 I FATIGUE MOOEL T-2 GEOSYNlHETICS T-3 OVERLOAD T-5
0+15 0+30 o+,s O-tQ'.l 0+75 0+90 1+05 1+20 1+35 1+50 1+65 1+80 2•55 2+70 3,00
Trafficking Start: Leica 3D Scanner April 5
• April 9, 2021 (330 passes)
• May 14, 2021 (3,234 passes)
Federal Aviation Administration
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Lt') ('t') .... ~ rri s:= 0 ..... .... u QJ -\.1-4-QJ rri
0 == ~ e QJ -.... rri s:= ~ QJ ..... u~
"'O QJ N ..... -~ e ~ 0 z
100
90
80
70
60
50
40
30
20
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0 3/5/2021 3/25/2021 4/14/2021 5/4/2021 5/24/2021 6/13/2021 7/3/2021
Date
--Geogrid & Fabric --Fabric Only --Control
Heavy Weight Deflectometer
• Normalized Deflections at 0-inch Offset
Trafficking
Federal Aviation Administration
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0 3/5/2021 3/25/2021 4/14/2021 5/4/2021 5/24/2021 6/13/2021 7/3/2021
Date --Geogrid & Fabric --Fabric Only --Control
Heavy Weight Deflectometer
• Normalized Deflections at 72-inch Offset
Trafficking
Federal Aviation Administration
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1+05 1+20 1+35 1+50 1+65 1+80 1+95
12
"' 10 ~ ~ 8
'c, 6 ... ., "e 4 :, Z 2
0
11.588 12.441 13.294 14.147 15 15.853 16.706 17.559 18.412
± Transverse Offset (ft)
2+110 2+25 2+40
-33.00' - ;;;:;;;:;;;;;;;;;;;;;;;;:;;;;;;;;;;;;;;;;;;;;i.;;;:i;;;;;;;;;:;;;;;;;;;;;;;l:!:;;;;;:;;;~;;;;;;;;;;;;;;;J;;;;;;;;;;;;;;;;;;;;;;;~;;;;;;;;;;;;;;;;:;;;;;;;;;;;;;;;;;;;~.;;;;;;;;;;:;;;;:;;;:;;;;;;l:!;;;;;;:;;;;;;;;;.;;;;;;;;;;;;;:;;;;;;;;;;;;;;;;;;;;;;;;:;;~;;;;;;:;;;;;;;:;;;;;;;;;;;;;;;;;;;:;;~:,;i;;;;;:;;;;:;;;:;;;;;;;;;;:;;;;;:;;;;;;;;;;.;;;;;;;;;;;;:;;:;;;;;;;;;;;;;;;;;;;;;;;;:;;w;j
T-2N GEO SYNTHETICS I..FC-3N T-3N CTPB
I..FS-4N T-4N
-26.66' - 1----------------1------+----------------------+-------------------------25.00' -
-15.00' -
-5.00' -
\.o.oo· -
5.00' -
15.00' -
25.00' -26.66' - •-------1------+------+-------------------------------+--------------11
SZ-.1. St•:J::11
S:JIHIUNAS03!> St".!.
Sr:J::11 70H.LNO:J
33.00' - - -------------- ------- -------------- --------- ---------------------------
Trafficking & HWD Testing
Federal Aviation Administration
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Lt') ~ ~ ~ r:r.i = 0 ..... ~ u (IJ -~-(IJ r:r.i
o:-:::: lo-( e (IJ -~ r:r.i = ~ (IJ ..... u~ "'O
(IJ N ..... -~ e lo-(
0 z
100
90
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0 3/5/2021 3/25/2021 4/14/2021 5/4/2021 5/24/2021 6/13/2021 7/3/2021
Date
--Geo grid & Fabric --Fabric Only --Control
Heavy Weight Deflectometer
• Normalized Deflections at 0-inch Offset
Trafficking
Untrafficked Areas (5-ft from CL)
Federal Aviation Administration
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..... ~
..r::: u ~
.,-; I
N t-.. ..... ~-CIJ CIJ ~ := .s e .... -u CIJ ~p.. '+; .,-;
(IJ ~
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I I I I I I
3/25/2021 4/14/2021 5/4/2021 5/24/2021 6/13/2021 7/3/2021
Date --Geogrid & Fabric --Fabric Only --Control
Federal Aviation Administration
Heavy Weight Deflectometer
• Normalized Deflections at 72-inch Offset
Trafficking
Untrafficked Areas (5-ft from CL)
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Federal Aviation Administration
Summary • Initial trafficking shows higher rutting for test
items with geosynthetics – Trafficking is still at early stages – Conclusions can’t be drawn from initial results
• Variation in rutting performance could be due to slight variations in subgrade
• Trafficking can be repeated in untrafficked areas (5-ft from CL), where deflections are similar
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Thank you
Federal Aviation Administration
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