geosynthetics testing at naptf

Federal Aviation Administration

Presented to:

By:

Date:

Geosynthetics Testing at NAPTF

Construction Cycle 9

REDAC

Ryan Rutter

September 8, 2021


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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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


5

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)


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

12

"' 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


8

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


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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)


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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

10

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


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..... ~

,.c: u i:::

•.-I I

~ ..... ~-ell ell

i== == .S E ..... -u ell

~ Pot ~ •.-I

QJ ~ 0 Lt) "'OM

QJ N

•.-I -~ E ~ 0 z

10

9

8

7

6

5

4

3

2

1

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



Trafficking


12

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


13

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

80

70

60

50

40

30

20

10

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



Trafficking

Untrafficked Areas (5-ft from CL)


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..... ~

..r::: u ~

.,-; I

N t-.. ..... ~-CIJ CIJ ~ := .s e .... -u CIJ ~p.. '+; .,-;

(IJ ~

0 U')

"'OM (IJ N

.,-; -~ e '"" 0 z

10

9

8

7

6

5

4

3

2

1

0 3/5/2021

I ::::::t=::, l

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




Trafficking

Untrafficked Areas (5-ft from CL)

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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


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geosynthetics testing at naptf

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