Extended Life Pavement in Indiana

January 9, 2008

Long Life Pavement in Indiana

PERPETUAL PAVEMENT?

• Structure has indefinite life (50 years or more)

• Surface renewed on regular basis (15 to 20 years)

Long Life Pavement in Indiana

PERPETUAL PAVEMENT

• Perpetual means “Long Life”• Regular pavements crack from the

bottom up– Require thick overlays (6 to 8 in.) or

reconstruction• Perpetual pavements crack from the top

down– Require new surface only (2 to 3 in.)

Long Life Pavement in Indiana

Cracking is from the surface

U.S.A. - CHINA

PERPETUAL PAVEMENT EXPERIMENT

Long Life Pavement in Indiana

PARTNERS

• U.S.A.– Indiana Department of Transportation– Federal Highway Administration– National Center for Asphalt Technology– Heritage Research Group

• CHINA– Shandong Highway Bureau– Shandong Research Institute

Long Life Pavement in Indiana

Shandong Province

Long Life Pavement in Indiana

Mr. Wang visits INDOT

Long Life Pavement in IndianaShandong Team Visits FHWA

Long Life Pavement in Indiana

EXPERIMENT OBJECTIVE

• Structural Design for Heavy Truck Load

• “How to build highways for 200,000 lb trucks.”

Long Life Pavement in Indiana

HEAVY LOADS IN

CHINA

Long Life Pavement in Indiana

NEWLY OPENED HIGHWAY

Long Life Pavement in Indiana

SIX YEAR OLD HIGHWAY

Long Life Pavement in Indiana

Axle Weight Distribution Comparison

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140Axle Group Weight (1,000 lb)

Axl

e Lo

ad P

erce

ntile

U.S.-Single China-Single

U.S.-Tandem China-Tandem

34,000 lb 74,000 lb

Long Life Pavement in Indiana

Test Sections

SMA, PG 76-22

SP-19, PG 76-22

SP-25, PG 64-22

Open Graded 25 mm, PG 70-22

SP-12.5 mm with +0.6% Binder, PG 64-22

Lime Stabilized Soil

SMA, PG 76-22

SP-19, PG 76-22

SP-25, PG 64-22

Open Graded 25 mm, PG 70-22

SP-12.5 mm with +0.6% Binder, PG 64-22

Lime Stabilized Soil

SMA, PG 76-22

SP-19, PG 76-22

SP-25, PG 64-22

Open Graded 25 mm, PG 70-22

SP-12.5 mm with +0.6% Binder, PG 76-22

Lime Stabilized Soil

0

5

10

15

20

25

30

70 125 125 (Modified)

Experimental Section

Dep

th, i

n.

Common Subgrade

με με με

Long Life Pavement in Indiana

Construction Site

November 2004

May 2005

Long Life Pavement in IndianaSame Layout as NCAT Track

Strain Gauges

Earth Pressure Cell

Long Life Pavement in Indiana

Completed Pavement

Long Life Pavement in Indiana

Measured Axle Weight

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0 20 40 60 80 100 120 140 160 180 200 220Tandem Axle Weight, kip

Per

cent

ile

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95

Tandem Axle Weight, Metric Tons

Design

Measured

Long Life Pavement in Indiana

Current Condition (Dec 2007)

Long Life Pavement in Indiana

Long Life Pavement in Indiana

Long Life Pavement in Indiana

Preliminary Results

• 20-inch pavement is perpetual• 15-inch pavements are perpetual• 13-inch pavement on soil cement is perpetual• 6-inch pavement on soil cement is not

Long Life Pavement in Indiana

U.S. Highways

Long Life Pavement in Indiana

Design Data

• AADT=126,180• % Trucks=10• No. Lanes=8

Long Life Pavement in Indiana

Applying ME Design

SMA, PG 76-22

SP-19, PG 76-22

SP-25, PG 64-22

Open Graded 25 mm, PG 70-22

SP-12.5 mm with +0.6% Binder, PG 64-22

SMA, PG 76-22

SP-19, PG 76-22

SP-25, PG 64-22

Open Graded 25 mm, PG 70-22

0

5

10

15

20

25

AASHTO Mechanistic-EmpiricalD

epth

, in.

Common Subgrade

$16.1 M $11.5 M