4 fabdo - sus pvmt design runways taxiways

8/11/2019 4 FAbdo - Sus Pvmt Design Runways Taxiways

1/52

Concrete Airport Pavement Workshop, October 27-28, 2010

Sustainable Pavement Designs for

Fares Y. Abdo, P.E.

Market Manager, Pavements

Portland Cement Association


2/52

TM

Presentation Outline

avemen s anSustainability

emen - rea e

Bases

Standard and Non-

Sections


3/52

TM

What is sustainable development?

Development that meets the needs of theDevelopment that meets the needs of the

present without compromising the ability

of future generations to meet their ownf future generations to meet their own

needs. World Commission on Environment and

Developments Report Our Common Future Oxford University Press,

198987).

Paradigm shift

We have not inherited the world from our

forefathers -- we have borrowed it from our

hildhildren ancient proverb


4/52

TM

Sustainability(Thomas Olson-The Pittsburgh Tribune, 10/24/10)

What Exactly is Sustainability?Sustainability is not an exact science

The concept of sustainability seems to beas the

It's increasingly embedded in business, government

an e sew ere


5/52

TM

Sustainable Strategies

v y y

Use of In-Situ Materials

Recycling and Waste Reduction

Reduced Energy Use

Reduced Greenhouse Gas Emissions


6/52

TM

ss on r ca oncre e unwaysMajority of Airports in U.S. were built durin

WII using concrete

Pittsburgh, Baltimore, Miami, WashingtonNational, and more are 60+ years old


7/52

TM

avement Sustainability Rating systems

rating system

Pavement rating systems

. GreenLITES

ASCE (under development)


8/52

TM

e Future of Pavement SustainabilityGreenroadsreenroads

State DOTs

RatingSystem

RatingSystem

1

FHWA

ASTM

RatingSystem

ASTM

ASCE/APWA/ACEC

FAA; Others?

Agency

Specifications

Eventually, the influence of rating systems will diminish as


9/52

TM

ement-Based Pavement Materials-

Concrete

ConcretePervious

Concrete

AASoil-Cementn

t

Econocrete

P-306

- rea eubbase

01 &

304

Cement-

Treated

Base

entCont

Cement-Modified

Full-Depth

Reclamation

C

em


10/52

TM

finition

ment-Treated Base an intimate mixture of

tive and/or manufactured aggregates witheasured amounts of portland cement (and

ssibly other cementitious materials) and

ter that hardens after compaction and curing

form a strong durable paving material


11/52

TM

t materials can be treated with cement?

Soils (sand, silt, clay)

Shale

rus e s one Slag

Recycled HMA

Recycled concrete


12/52

TM

hy Use CTB?

Decreased base thickness compared tounbound aggregate base

Structural properties maintained under varying

moisture conditions

Hi h stiffness inhibits fati ue crackin and

rutting of asphalt surface


13/52

TM

AA Base/Subbase Approved Materials


14/52

TM

urpose o ase u ase ourses(FAA AC 150/5320-6E)

Flexible pavements

Base

Asphalt

Distribute the loads to the

Base

Subbase

(Req. if CBR


15/52

TM

mproved Performance in Rutting and Fatigue CrackingP P

Cement-Treated Base

Unstabilized Granular Base


16/52

TM

urpose o ase u ase ourses(FAA AC 150/5320-6E)Flexible pavements

Base

Asphalt

Distribute the loads to the

Base

Subbase

(Req. if CBR


17/52

TM

FAA AC 150/5320-6E Flexible Pavement Design

B C M G L dm Base Course Max. Gross Load,

lbs.

,

9 Crushed Aggregate Base 100,000

1 Lime Rock Base N A

9 Recycled Concrete Aggregate Base 100,000

4 Cement Treated Base N/A

6 Econocrete Subbase N/A

1 Plant Mix Bituminous Pavements N/A

3 HMA Base N A


18/52

TM

FAA AC 150/5320-6E Flexible Pavement Design

S bb C

1

F P im Subbase Course

1

Frost Penetrating

Subbase

0 Caliche Base Course

2 Shell Base Course

3 Sand Clay Base Course X

1 Soil Cement Base Course X

terials acceptable for base course can also be used for subbase course


19/52

TM

FAA AC 150/5320-6E Rigid Pavement Design

S bb C M G L dm Subbase Course Max. Gross Load,

lbs.

Subbase Course 100 000Requires quality

Aggregate Base Course 100,000

Crushed Aggregate Base Course 100,000

aggregates or

crushed

concrete

meeting same

Lime Rock Base Course 100,000

Soil Cement Base Course 100,000

requirements

Econocrete Subbase Course N/APlant Mix Bituminous Pavements N/A

HMA Base Course N A


20/52

TM

Engineering Properties of CTB

P

1

FAA P 301 FAA P 304 PCA CTBroperty

1

FAA P-301

(Soil Cement)

FAA P-304

(CTB)

PCA CTB

Compressive N/A2 Under PCC: 300 min.;

gth, psi 500 min.; 1000 max.

Under HMA:

750 min.; 1000 max.

800 max.

ic Modulus, ksi 250 500 600-1000

ons Ratio 0.20 0.20 0.15

efer to FAA AC 150/5320-6E for durability requirements

AA recommendations for P-301 are based on wet-dry and freeze-thaw testsnd strength should increase with age


21/52

TM

x n e o s


22/52

TM

ixing Methods

Two methods Plant Mix

-


23/52

TM

lant MixCentral

Concrete

Batch Plant

-

FAA P-304


24/52

TM

oad Mix

In-situ or mixed in place materials

Applicable for

FAA P-301 but

ot P-304 unless

variance is

granted)


25/52

oad Mix

Spread cement

necessary and mix

ra e an compacCure


26/52


27/52

TM

oa xThen


28/52

oa xnd now

Why cant use this

ethod to build FAA Pthod to build FAA P-


29/52

TM

nt vs. Road Mix Considerations

FAA P-304 spec includes plant mix only

ua y o n-s u ma er a s

Cost

Haul distances: material sources, plant, jobsite

Design thickness (one or multiple lifts)

Sustainable considerations (Reduce, Reuse andRecycle)


30/52

TM

Applications


31/52

TM

ere are stabilized materials used?ow vo ume roa ways

Residential streets

Interstate highways

Parking lots

Port facilities

In other words

an avement structure!


32/52

ashington Dullesr ort Runwa 4 2008

18 PCC w/

owelled transverse

j i t t 20 ftoints at 20 ft

6 CTB, 6% cement

12 Cement-

Stabilized Subgrade,

5% cement


33/52

TM

ashington Dullesr ort Runwa 4

Runway 4 completed in 2008

Runway 12 was completed in2004


34/52

Ex Hub at Allianceport, Fort Worth,

Taxiway & Ramp

1997

14 PCC

Taxiway & Ramp

Truck Terminal &

C t i St g4 PCC Container Storage

9 CTB

10 JRCP

9 Cement-Treated 6 Cement-Treated


35/52

TM

Ex Hub at Alliance Airport, Fort Worth, TX

0-yr design lifeomp e e n

30,000 yd2

ement-treated subgrade

7 % cement, 250 psi,reduced PI from 38 to lessthan 12

750 psi at 28 days


36/52

W SE Perimeterxiwa 2008irst perimeter taxiway in U.S.

uilt for safety and to reduce

18 CRCP

18 CRCP

12 CTB

12 Lime-Treated


37/52

W SE Perimeteriwayompleted in 2008

25,000 yd

2

uilding the remaining 3 loops


38/52

iedman Memorialrport, Hailey, Idaho

Single asphalt runway

serving the airport

7,500 ft long runway.

6 900 ft needed rehab

Priority No. 1:

shutdown time ons ruc on me


39/52

TM

iedman Memorial Airport Runway, Hailey, Idaho

airport in 10 years

ree approve

methods considered but

30 days (fastest

construction was estimated

at 48 days)

Courtesy of T-O Engineers


40/52

TM

FAA

dman Memorial Airport Runway, Hailey, IdahoFDRAA FAA

Standard

HMA

Option

HMAHMA

Alternate Alternate 2

Crushed -

Stone Base

6

Crushed-

HMA

14.5

FDR

12

Stone Base14

Subbase

5


41/52

TM

dman Memorial Airport Runway, Hailey, Idaho


42/52

TM

iedman Memorial Airport Runway, Hailey, Idaho

Constructed within contract time in 2007

1 million in construction savin s

Reduced use of virgin materials from quarries

Eliminated about 4,000 truck trips

Reduced material dis osal

Reduced fuel use, air emissions, traffic


43/52

TM

Dauphin Island Airport, Alabama


44/52

uphin Island,


45/52

TM

uphin Island, AL

istress

Ravelin Severe

cracking

Mild basefailure


46/52

TM

uphin Island, AL

igh water

able

Courtes of Volkert


47/52

TM

uphin Island Runway Repair Options

Remove and Replace

Full Depth Reclamation

=

Repair base

.

Cement = 45 Lbs./

Place 4 asphaltwearing surface

. . Place 3.5 asphalt

wearing surface


48/52

uphin Island,

Courtesy of Volkert


49/52

TM

auphin Island, ALene s o p on

Reduced construction time Higher pavement strength

Conservations of virgin materials and energy

savings


50/52

TM

Atlanta Airport Apron Project, 2010

6

8

1


51/52

TM

FAA

nta Airport Apron Section

As

ndard

Constructed

C (P-501)

20 PCC (P-501)

Courtesy of J A Long, Inc.

conocrete

P-306)

il-Cement

)

9 Cement-Treaded

Subgrade; 600 psi

at 7 days


52/52

TM

ore n orma on

4 fabdo - sus pvmt design runways taxiways

Documents