binder characterizations for high tire pressure project n.
Download
Skip this Video
Download Presentation
Binder Characterizations for High Tire Pressure Project

Loading in 2 Seconds...

play fullscreen
1 / 23

Binder Characterizations for High Tire Pressure Project - PowerPoint PPT Presentation


  • 74 Views
  • Uploaded on

Binder Characterizations for High Tire Pressure Project. 04/26/2012 Injun Song , Ph.D., P. E . SRA International, Inc . Federal Aviation Administration  Airport Pavement Working Group Meeting Atlantic City Convention Center April 24 – 26, 2012 Atlantic City, NJ. Acknowledgements.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Binder Characterizations for High Tire Pressure Project' - uma-terrell


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
binder characterizations for high tire pressure project

Binder Characterizationsfor High Tire Pressure Project

04/26/2012

Injun Song, Ph.D., P. E.

SRA International, Inc.

Federal Aviation Administration Airport Pavement Working Group Meeting

Atlantic City Convention Center

April 24 – 26, 2012

Atlantic City, NJ

acknowledgements
Acknowledgements
  • Binder Testing;
    • Yusuf A. Mehta, Rowan University.
  • APA Testing;
    • Jeff Stein, SRA International, Inc.
    • Matthew Wilson, SRA International, Inc.
  • Roy D. McQueen, Roy D. McQueen & Associates Ltd.
  • NavneetGarg, Federal Aviation Administration.
  • Gordon Hayhoe, Federal Aviation Administration.
background
Background
  • Needs for New High Tire Pressure Limit;
    • The advent of new aircraft having tire pressures exceeding 220 psi,
    • International Civil Aviation Organization (ICAO) Standard.
  • New Design Procedures;
    • Concentrating in the surface layers of the pavement structure,
    • Developing Hot Mix Asphalt (HMA) mix design procedures.
objectives
Objectives
  • Characterizations of the HMA properties affecting the performance of HMA mixes under high pressure aircraft tires;
    • Full-Scale testing at the National Airport Pavement Test Facility (NAPTF),
    • Laboratory testing for HMA and asphalt binder.
  • Conducting researches into the design of HMA to resist damage from high pressure aircraft tires.
outline
Outline
  • Confirming Performance Grades.
  • Multi Stress Creep Recovery.
  • Frequency Sweep Test for Temperature Dependency.
  • Temperature Susceptibility for HMA.
materials for lab testing
Materials for Lab Testing
  • Fifteen Mixtures Combining Three Aggregates with Five Binder Types.
  • Three Aggregate Types;
    • NAPTF mix (Argillite & Dolomite),
    • Lexington mix (Limestone),
    • JFK (Granite).
  • Five Binder Types;
    • Neat PG 64-22,
    • Neat PG 70-22,
    • Blend of Neat PG 64-28 + 25% Trinidad Lake Asphalt (TLA),
    • Polymer modified PG 76-22,
    • Polymer modified PG 82-22.
naptf mixtures
NAPTF Mixtures
  • Used for NAPTF Full-Scale and Asphalt Pavement Analyzer (APA).
  • Mix Design;
    • Aggregates: Argillite and Dolomite,
    • Binder: PG 64-22 and PG 76-22 at 105°F and 119°F.
  • Loading Conditions;
    • Inflation pressure for the north wheel=210 psi / south wheel=245 psi,
    • Simulate Taxiway Traffic Loading: West to East at 1.0 ft/sec. Return East to West at 4.0 ft/sec,
    • Wander spacing=0 and ±7 inches / Wander sequence: -1, +1, 0.
tests for binder characterization
Tests for Binder Characterization
  • Dynamic Shear Rheometer (DSR);
    • G*, d,
    • Multiple Stress Creep Recovery (MSCR),
    • AASHTO T 315; Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer (DSR),
    • AASHTO TP 70; Multiple Stress Creep Recovery (MSCR) Test of Asphalt Binder Using a Dynamic Shear Rheometer,
    • AASHTO M320; Standard Specification for Performance-Graded Asphalt Binder.
  • Rolling Thin Film Oven (RTFO).
  • Pressure Aging Vessel (PAV).
  • Rotational Viscometer.
  • Softening Point / Elastic Recovery (PG+).
superpave pg high temperature
Superpave PG High Temperature
  • G*/ sin d;
  • >1.00 kPa for unaged.
  • >2.20 kPa after RTFO for production process during storing, mixing, transportation, and lay down,
  • SuperpaveBinder Specification inversely proportional to rutting potential,
  • Well for conventional speed and moderate traffic volume.
  • Grade Bumping;
  • Losing linear viscoelastic behavior with excessive loading time (speed) and heavy traffic (volume),
faa grade bumping
FAA Grade Bumping
  • FAA Advisory Circular 150/5370-10F;
aashto grade bumping
AASHTO Grade Bumping
  • AASHTO MP-2, “Standard Specification for Superpave Volumetric Mix Design”;
multi stress creep recovery
Multi Stress Creep Recovery
  • Eliminate Grade Bumping;
    • Grade bumping not reflects experiencing high temperature.
  • Better Characterization of the High Temperature Performance Properties.
  • Testing;
    • DSR after Short-Term Aging (RTFO),
    • 10 cycles per stress level at 0.1kPa and 3.2kPa,
    • 1 second loading and 9 second resting periods,
    • Non-Recoverable Creep Compliance ().
mscr gradings
MSCR Gradings()
  • ) / ≤ 0.75
mscr gradings traffic
MSCR Gradings (Traffic)
  • Example; NJ 20mil ESAL, PG 64-22

→ PG 64-22V

summary
Summary
  • Binder Characterizations;
    • Confirming current binder gradings used for high tire pressure project,
    • Applications of MSCR for the current binders.
  • Temperature Susceptibilities for Binder and HMA.