The Indianapolis Motor Speedway!

CONSTRUCTING!

Carl Fisher 1904 Chicago!

Model of Track, March 1909!

Speedway, Indiana 1915!

Compacting the Track!

1909 Motorcycle Race!

•! 10 mile!•! 52 mph!

1909 Oiled Stone Course!

Louis "Chevrolet"1909!

1909 Auto Race!

1909!

1922 Race!

1928 Race!

Paving the Track!•! 1936 – Asphalt applied to

portions of turns"

•! 1937 – All turns completely paved with Kentucky Rock Asph."

•! 1938 – Short chutes paved"

•! 1939 – Back stretch paved, but ~1900’ of front stretch still brick"

•! 1955 – All existing asphalt portions re-paved"

•! 1961 – Remaining bricks covered!

•! 1st Complete Resurfacing!

•! Cracks sealed with AE-150 & sand!

•! 1/2” Leveling course"~2400 tons!

•! 1” ACBF Surface course with 60-70 Pen AC"~4400 tons!

1976!

1988 …!

May 6, 1989"Indianapolis News article!

1988!

1988!

1995!

1995!

1995!

1995!

1995!

1995 – OGDL!

1995 – Surface with PG 64-34!

1996!

1996!

1996!

1996!

At end of race!

1996 – SMA!

IMS Repaving 2004

Essential Surface Qualities!

•! Drivers must have confidence:!–! Smooth, no vertical accelerations!–! Can not ravel or shove (it can NOT lose stability)!–! Joints can not ravel!–! Texture must be consistent!

•! Must dry quickly (impermeability)!•! Must control cracking!

Existing Conditions!

•! Extensive Surface Cracking:!–! Creating high stress concentrations - “Marbles”!–! Increasing water infiltration, accelerating long-term

damage!•! Longitudinal Joints:!

–! Raveling – “Marbles”!–! Separated and open!–! Too many!

•! Weepers:!–! Greatly increases drying time for “Stage”!

Existing Pavement Random Cracking

Top-Down

Cracking

Weepers!

Survey Results!•! Extensive (Top-Down) Cracking:!

–! AC/Binder absorption by ACBF slag (CA and FA)!–! AC/Binder too brittle at low temperatures!–! Existing Surface had F-G aggregate structure!

•! Longitudinal Joints:!–! Separation due to shrinkage (AC/Binder absorption)!–! Low density at longitudinal joints!

•! Weepers:!–! Roof water through longitudinal joints, cracks and low

density surface!

Goals of 2004 Rehabilitation!

•! Longer Life (Less Cracking)!•! Less Permeability!•! Exceedingly Smooth!

Proposed Solutions!•! Mill 2-1/2”!

–! Avoid existing SAMI, Repair/Replace if necessary!•! SMA For Durability & Stability!

–! Aggregates with minimal absorption!–! Highly modified AC!–! Low Ndesign voids & compactable!

•! Long-Lasting Longitudinal Joints!–! Non-raveling, compliant and impermeable!

•! Equipment with Latest Technology!–! Increase lane widths, improve compaction and achieve

maximum smoothness!

Project Summary!

•! Oval & Warm-up / Pit Lanes Repaved!–!August 9 - November 11!–!Total area: 128,820 yd2 "

(~4.6 miles of a four-lane Interstate)!–!Total HMA tonnages:!

•! Intermediate: 9,750!•!Surface: 8,420!

Mixes Utilized!

•! Intermediate!–! 1-1/2” of 9.5mm Dolomite SMA!–!PG 76-28 / PG 82-22!–!Macro-texture to mechanically “lock” surface!

•! Surface!–! 1” of 4.75mm Steel Slag SMA!–!PG 76-28 / PG 82-22!–!Smoothness and Friction!

9.5mm Dolomite SMA Sieve % Passing

12.5 100! 9.5 88 4.75 35 2.36 23 1.18 18 0.600 16 0.300 13 0.150 12

0.075 9.3 Gyrations = 75

Air Voids = 3.1%

VMA = 17.3%

VFA = 81.6%

A.C. = 6.5%

4.75mm Steel Slag SMA Sieve % Passing

9.5 100 (Volume) 4.75 91 (91) 2.36 32 (34) 1.18 22 (24) 0.600 19 (21) 0.300 17 (19) 0.150 15 (17) 0.075 11.8 (13.0)

Gyrations = 75

Air Voids = 3.1%

VMA = 18.7%

VFA = 83.4%

A.C. = 6.8% Coarse!Fine!

Milling - Oval!

Start-up Waste!

Temperature Monitoring!

Mineral Filler System!

Extra MF Storage!

Vertical AC Tanks!

Cellulose Fiber Unit!

Cold Feeds!

High Density Vogele Screed!

Tamper Bar!Pressure Bars!

Dolomite SMA Test Strip!

Apex – Dolomite SMA!

Apex – Mill Line!

Apex – Dol. SMA"Plate Sample!

Apex – Cores!

SAMI Application!

Dolomite SMA!

Dolomite SMA!

Dolomite SMA!

Dolomite SMA!

Warm-up Load at Start of Day!

Watering on the Go!!

Soap in Roller!

Completing the Lap!

California Profilograph!

IRL Smoothness Test!

Diamond Grinding - Dolomite SMA!

SAMI on Dolomite SMA at

Wall!

XJB!

Steel Slag SMA"Test Strip!

RPE Tack for Steel Slag SMA!

Apex – Steel Slag SMA!

Steel Slag SMA!

Steel Slag SMA!

Steel Slag SMA!

JBand Under Longitudinal Joint!

XJB On Longitudinal Joint!

XJB & JBand!

Filling Core Holes!

Milling Warm-Up & Pit Lanes!

Handwork!!

Milling Excess from Transitions!

9.5mm Dolomite SMA

Sieve DMF QC AVG

12.5 100 100 9.5 88 92 4.75 35 36 2.36 23 21 1.18 18 17

0.600 16 14 0.300 13 13 0.150 12 12 0.075 9.3 9.3 A.C. 6.5 6.3 Voids 3.1 3.0

VMA 17.3 17.3

Avg. Core Density (N=34) 94.8%

4.75mm Steel Slag SMA

Sieve DMF QC AVG

9.5 100 100 4.75 91 91 2.36 32 29 1.18 22 20

0.600 19 17 0.300 17 16 0.150 15 14

0.075 11.8 10.7 A.C. 6.8 6.7 Voids 3.1 2.8

VMA 18.7 18.3

Avg. Core Density (N=25) 94.3%

Diamond Grinding"April 2005!

It Survived NASCAR!!

What Have We Learned?!

•! Investigate distress issues thoroughly!•! Mix shear strength is very important!!•! Avoid highly absorptive aggregates for

improved durability!•! Reduce mix permeability by using:!

–! J-Band and RPE!–!SMA!

•! Use Polymer modified AC’s and emulsions!

Thank You!!