SUPERPAVE BINDER SPECIFICATIONS & SELECTIONS. Superpave Binder Specs & Selections 1

Similar documents
- New Superpave Performance Graded Specification. Asphalt Cements

Superpave Asphalt Binder Specification

Superpave Asphalt Binders

Caltrans Implementation of PG Specs. Caltrans. Presentation Overview. HMA in California. Why, When & How? How will if affect YOU?

Multiple Stress Creep Recovery (MSCR): New Binder Grade Testing and Terminology

Louisiana s Experience

Background. Asphalt Soluble in petroleum products. Tar Resistant to petroleum products Generally by-product of coke (from coal) production

TRB Workshop Implementation of the 2002 Mechanistic Pavement Design Guide in Arizona

Basics of test: Sand cylinder of mix is 10 Hz either in stress or strain a target temperature until specimen fails Test uses a

AC Binder Characterization Containing Crumb Tire Rubber

SECTION 916 (Pages ) is deleted and the following substituted: SECTION 916 BITUMINOUS MATERIALS

What s going on with European Specifications?

Use of New High Performance Thin Overlays (HPTO)

EFFECT OF SUPERPAVE DEFINED RESTRICTED ZONE ON HOT MIX ASPHALT PERFORMANCE

NCHRP Project Short- and Long-Term Binder Aging Methods to Accurately Reflect Aging in Asphalt Mixtures

CHARACTERISTICS OF REJUVANATED BITUMEN WITH USED LUBRICATING OIL AS REJUVENETING AGENT

New Tools from EN Standards for high performances mixes

Improved Aging Characteristics of Crosslinked Polymer Modified Asphalt Binders

Demand for soft grades of Binder

Update NCHRP Project 9-61 Short- and Long-Term Binder Aging Methods to Accurately Reflect Aging in Asphalt Mixtures

Heritage Research Group 940 N. Wynn Rd - Oregon, OH Phone (419) Fax (317)

Darwin-ME Status and Implementation Efforts_IAC09

FHWA Pavements program What s s Happening. John D AngeloD Office of Pavement Technology

Thomas Bennert, Ph.D. Rutgers University Center for Advanced Infrastructure and Transportation (CAIT)

Performance Tests of Asphalt Mixtures

Warm Mix Technology. Sasobit. Sasobit. Available WMA Technologies SEAUPG 2005 CONFERENCE - NASHVILLE, TN CONCERNS: Frankfurt Airport

Structural Considerations in Moving Mega Loads on Idaho Highways

Industry/PennDOT Initiative On Performance Testing. AN UPDATE January 22, 2019

MUNICIPALITY OF MONROEVILLE

Implementation and Thickness Optimization of Perpetual Pavements in Ohio

Products for Asphalt Testing

EME2 Pavement and mix design. Laszlo Petho, Pavements Manager Fulton Hogan.

COMPARING RUTTING PERFORMANCE UNDER A HEAVY VEHICLE SIMULATOR TO RUTTING PERFORMANCE AT THE NCAT PAVEMENT TEST TRACK. Dr. R. Buzz Powell, P.E.

Rutting of Caltrans Asphalt Concrete and Asphalt-Rubber Hot Mix. Under Different Wheels, Tires and Temperatures Accelerated

Performance Based Lab Tests to Predict Pavement Fatigue

Impact of Overweight Traffic on Pavement Life Using WIM Data and Mechanistic- Empirical Pavement Analysis

NCAT/MnROAD Cracking Group Update. March 29, 2018

Oregon Department of Transportation Standard Specifications For Asphalt Materials 2004

Developing Affordable GTR Asphalt Mixes for Local Roadways

PPA WORKSHOP APRIL 7-8, 2009 MINNEAPOLIS, MN

Developing Affordable GTR Asphalt Mixes for Local Roadways

Impact of Environment-Friendly Tires on Pavement Damage

Simulation of the Mixture Preparation for an SI Engine using Multi-Component Fuels

Innovative Warm Mix Asphalt Projects: The Contractor s Perspective

DMS-9202, Asphaltic Concrete Patching Material (Stockpile Storage)

Schedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK

Fuel Resistant. Punishing Conditions. Supreme Production.

Effect of Different Axle Configurations on Fatigue Life of Asphalt Concrete Mixture

2016 NJDOT Research Showcase 10/26/16

SECTION 118 ASPHALT MATERIAL

Eugene OBrien, Roughan & O Donovan and University College Dublin, Ireland. Peter Favai, Cestel, Slovenia (NATMEC Exhibitors)

Ch# 11. Rolling Contact Bearings 28/06/1438. Rolling Contact Bearings. Bearing specialist consider matters such as

Assessing Pavement Rolling Resistance by FWD Time History Evaluation

Subject: Dr. Witczak s letter to AASHTO Subcommittee on Materials and AASHTO Joint Technical Committee on Pavements

EFFECTS OF DUAL VERSUS SUPER SINGLE TRUCK TIRE ON FLEXIBLE PAVEMENT PERFORMANCE; A MECHANISTICAPPROACH

ACC Technology Showcase November 10, 2015 Newport Beach, CA. Ronald Corun Axeon Specialty Products LLC Director - Asphalt Technical Services

NCAT Report EFFECT OF FRICTION AGGREGATE ON HOT MIX ASPHALT SURFACE FRICTION. By Pamela Turner Michael Heitzman

High Surface Area Silica. High Performance Tread. STRUKTOL SCA 98 (Tetrasulfide)

Asphalt Technology Guidance Program (ATGP)

NEAT ASPHALTS 40-50, 60-70, , , , & Complies to ASTM D 946 & AASHTO M20, BS 3670 DIN 1995

ASPHALT 101. Robert B. McGennis, P.E. The HollyFrontier Companies Phoenix, AZ

SEAUPG 2009 CONFERENCE-HILTON HEAD ISLAND, SOUTH CAROLINA

WARM MIX ASPHALT TECHNOLOGY

SULFUR EXTENDED ASPHALT INVESTIGATION - LABORATORY AND FIELD TRIAL

Long Life Asphalt Performance Testing January 17, 2018

Do I have a problem?

Influence of Vehicle Speed on Dynamic Loads and Pavement Response

APPENDIX C CATEGORIZATION OF TRAFFIC LOADS

Pavement Performance Prediction Symposium July 17, 2008 University of Wyoming Laramie, Wyoming

CHARACTERIZATION AND DEVELOPMENT OF TRUCK LOAD SPECTRA FOR CURRENT AND FUTURE PAVEMENT DESIGN PRACTICES IN LOUISIANA

Barry Paye, P.E. Wisconsin DOT Materials Lab

THE DAMAGING EFFECT OF SUPER SINGLES ON PAVEMENTS

CATEGORY 500 PAVING SECTION 535 PAVEMENT SURFACE PROFILE

DMS-9202 Asphaltic Concrete Patching Material (Stockpile Storage or Bagged)

DMS ASPHALTIC CONCRETE PATCHING MATERIAL (STOCKPILE STORAGE)

Pavement Thickness Design Parameter Impacts

SECTION B ASPHALT BITUMEN PAVETEST

Characterization of LTPP Pavements using Falling Weight Deflectometer

APPLICATION BRIEF. Model 4730/4731 NTO New Technology Oven. June 2000

VISCOSITY DATA FOR ASPHALTS USED BY THE TEXAS HIGHWAY DEPARTMENT. R. N. Traxler Research Engineer Texas Transportation Institute

ISO 2909 / ASTM D

Development of long life structural asphalt

Truck Axle Weight Distributions

HDM-3. Transportation systems Engineering, IIT Bombay 72

All Regional Engineers. Omer M. Osman, P.E. Special Provision for Hot-Mix Asphalt Mixture Design Composition and Volumetric Requirements July 25, 2014

Power Transmission Elements II: Gears and Bearings. Lecture 3, Week 4

A Crack is a Crack Mn/DOT s Perspective on Cracking in Asphalt Pavements

Vertical Loads from North American Rolling Stock for Bridge Design and Rating

Oil Comparison for Weighing Precipitation Gauges as used in Environment Canada

The INDOT Friction Testing Program: Calibration, Testing, Data Management, and Application

Evaluation of the Rolling Wheel Deflectometer (RWD) in Louisiana. John Ashley Horne Dr. Mostafa A Elseifi

Tex-614-J, Testing Epoxy Materials

I.D.O.T. Update Version -

BITUTECH RAP & PER HIGH RAP AND WARM-MIX ASPHALT SOLUTIONS. Green Asphalt Technologies LLC. Technology developed by:

North Eastern States Materials Engineers Association (NESMEA) October 18 th 19 th, 2016 Newark, DE

An Innovative High Strength Steel Engine Cradle Concept

TECHNICAL INFORMATION

10 Thrust ball bearings

Young Researchers Seminar 2009

Status of the first experiment at the PaveLab

Transcription:

SUPERPAVE BINDER SPECIFICATIONS & SELECTIONS Superpave Binder Specs & Selections 1

New Binder Specification SUPERPAVE Fundamental properties related to pavement performance Environmental factors In-service & construction temperatures Short and long term aging Superpave Binder Specs & Selections 2

-20 20 60 135 Pavement Temperature, C Superpave Binder Specs & Selections 3

Superpave Asphalt Binder Specification The grading system is based on climate PG 64-22 Performance Grade Min pavement temperature Average 7-day max pavement temperature Superpave Binder Specs & Selections 4

Performance Grades CEC Avg 7-day Max, o C 1-day Min, o C > 230 o C < 3Pa. s @ 135 o C PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV > 1.00 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % > 2.20 kpa 20 Hours, 2.07 MPa < 5000 kpa S < 300 MPa m > 0.300 (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV 90 90 100 100 100 (110) 100 (110) 110 (110) (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 ( Bending Beam Rheometer) BBR S Stiffness & m - value Report Value > 1.00 % -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 5

How the PG Spec Works CEC Spec Requirement Remains Constant Avg 7-day Max, o C 1-day Min, o C > 230 o C < 3Pa. s @ 135 o C PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV > 1.00 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 58 64 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % > 2.20 kpa 20 Hours, 2.07 MPa < 5000 kpa S < 300 MPa m > 0.300 Report Value > 1.00 % (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV 90 90 100 100 100 (110) 100 (110) 110 (110) Test Temperature Changes (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 ( Bending Beam Rheometer) BBR S Stiffness & m - value -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 6

Permanent Deformation CEC Avg 7-day Max, o C 1-day Min, o C > 230 o C < 3Pa. s @ 135 o C PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV > 1.00 kpa Unaged RTFO Aged > 2.20 kpa 20 Hours, 2.07 MPa < 5000 kpa S < 300 MPa m > 0.300 (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV 90 90 100 100 100 (110) 100 (110) 110 (110) (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 ( Bending Beam Rheometer) BBR S Stiffness & m - value Report Value > 1.00 % -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 7

Permanent Deformation Addressed by high temp stiffness G*/sin δ on unaged binder > 1.00 kpa G*/sin δ on RTFO aged binder > 2.20 kpa Heavy Trucks > Early part of pavement service life Superpave Binder Specs & Selections 8

Fatigue Cracking CEC Avg 7-day Max, o C 1-day Min, o C > 230 o C < 3Pa. s @ 135 o C PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV > 1.00 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % > 2.20 kpa 20 Hours, 2.07 MPa (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV 90 90 100 100 100 (110) 100 (110) 110 (110) < 5000 kpa PAV Aged S < 300 MPa m > 0.300 Report Value > 1.00 % (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 ( Bending Beam Rheometer) BBR S Stiffness & m - value -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 9

Fatigue Cracking Addressed by intermediate temperature stiffness G*sin δ on RTFO & PAV aged binder < 5000 kpa > Later part of pavement service life Superpave Binder Specs & Selections 10

Low Temperature Cracking CEC Avg 7-day Max, o C 1-day Min, o C > 230 o C < 3Pa. s @ 135 o C PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV > 1.00 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % > 2.20 kpa 20 Hours, 2.07 MPa < 5000 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV 90 90 100 100 100 (110) 100 (110) 110 (110) (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 S < 300 MPa m > 0.300 PAV Aged Report Value > 1.00 % ( Bending Beam Rheometer) BBR S Stiffness & m - value -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 11

Low Temperature Cracking CEC Avg 7-day Max, o C 1-day Min, o C > 230 o C < 3Pa. s @ 135 o C PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV > 1.00 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % > 2.20 kpa 20 Hours, 2.07 MPa < 5000 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV 90 90 100 100 100 (110) 100 (110) 110 (110) (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 S < 300 MPa m > 0.300 PAV Aged Report Value > 1.00 % ( Bending Beam Rheometer) BBR S Stiffness & m - value -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 12

Miscellaneous Spec Requirements CEC Avg 7-day Max, o C 1-day Min, o C > 230 o C Flash Point < 3Pa. s @ 135 o C > 1.00 kpa > 2.20 kpa PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV Mass Loss 20 Hours, 2.07 MPa < 5000 kpa S < 300 MPa m > 0.300 90 90 100 100 100 (110) 100 (110) 110 (110) (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 ( Bending Beam Rheometer) BBR S Stiffness & m - value Report Value > 1.00 % -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 13

PG Binder Selection PG 52-28 > Many agencies have established zones PG 58-22 PG 58-16 PG 64-10 Superpave Binder Specs & Selections 14

Developed from Air Temperatures Superpave Weather Database 6500 stations in U.S. and Canada Annual air temperatures hottest seven-day temp (avg and std dev) coldest temp (avg and std dev) Calculated pavement temps used in PG selection > 20 years SHRP A-648A Superpave Binder Specs & Selections 15

Reliability Percent probability of not exceeding design temp > using Normal Distribution Frequency of observed temps (Total area under curve = 100 %) Reliability is area under curve to the left of T des T avg T des Superpave Binder Specs & Selections 16

Observed Air Temperatures Topeka, KS 50 % reliability average summer very hot summer 98 % reliability Standard deviation of 2 C 36 40 7-Day Maximum Air Temperatures Superpave Binder Specs & Selections 17

Observed Air Temperatures Topeka, KS 36 very cold winter 40 average winter -31-23 standard deviation of 4 C -40-30 -20-10 0 10 20 30 40 50 60 Superpave Binder Specs & Selections 18

Convert to Pavement Calculated by Superpave software High Temperature (20 mm below surface of mixture) Low Temperature (at surface of mix) Temperature

Calculated Pavement Temperatures Topeka, KS pvt > air 56 60-31 -23 pvt > air -40-30 -20-10 0 10 20 30 40 50 60 70 Superpave Binder Specs & Selections 20

PG Binder Grades Topeka, KS PG 64-34 (98% minimum reliability) PG 58-28 (50 % minimum reliability) PG grades - six degree increments -40-30 -20-10 0 10 20 30 40 50 60 70 Superpave Binder Specs & Selections 21

Effect of Rounding to Standard Grades PG 58-28 (50 % minimum reliability) PG -28 provides 90% reliability PG 58 provides 85% reliability -40-30 -20-10 0 10 20 30 40 50 60 70 Superpave Binder Specs & Selections 22

Effect of Rounding to Standard Grades -16-22 -28 needed grade for 50% reliability selected grade for 50% reliability Rounding depends on actual temps! -28-23 Minimum Pavement Temperatures Superpave Binder Specs & Selections 23

Effect of Loading Rate on Binder Selection 90 kph Dilemma Specified DSR loading rate is 10 rad/sec What about longer loading times? Use binder with more stiffness at higher temps Slow - - increase one high temp grade Stationary - - increase two high temp grades No effect on low temp grade Superpave Binder Specs & Selections 24

Effect of Loading Rate on Binder Selection Example for toll road PG 64-22 for toll booth PG 70-22 for weigh stations PG 76-22 90 kph Slow Stopping Superpave Binder Specs & Selections 25

Jim s Produce Ace Trucking Co. ESAL = Equivalent Single Axle Loads

ESAL Comparison 80 kn 18,000 lb. 100 kn 22,000 lb. 44 kn 10,000 lb. 1 ESAL 2.2 ESAL.09 ESAL Superpave Binder Specs & Selections 27

Little Truck 67 kn 15,000 lb 0.48 ESAL 27 kn + 6,000 lb = 0.01 ESAL 0.49 ESALs BIG TRUCK 151 kn 34,000 lb 1.10 151 kn 54 kn + 34,000 lb + 12,000 lb = 1.10 0.19 2.39 ESALs Superpave Binder Specs & Selections 28

ESAL Comparison 3,500-5,000 Acme Van Lines 1

Effect of Traffic Amount on Binder Selection 80 kn ESALs 10-30 x 10 6 ESAL Consider increasing - - one high temp grade 30 x 10 6 + ESAL Recommend increasing - - one high temp grade > Equivalent Single Axle Loads Superpave Binder Specs & Selections 30

How the PG Spec Works CEC Spec Requirement Remains Constant Avg 7-day Max, o C 1-day Min, o C > 230 o C < 3Pa. s @ 135 o C PG 46 PG 52 PG 58 PG 64 PG 70 PG 76 PG 82-34 -40-46 -10-16 -22-28 -34-40 -46-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-40 -10-16 -22-28 -34-10 -16-22 -28-34 ORIGINAL (Flash Point) FP (Rotational Viscosity) RV > 1.00 kpa (Dynamic Shear Rheometer) DSR G*/sin δ 58 64 46 52 58 64 70 76 82 (ROLLING THIN FILM OVEN) RTFO Mass Loss < 1.00 % > 2.20 kpa 20 Hours, 2.07 MPa < 5000 kpa S < 300 MPa m > 0.300 Report Value > 1.00 % (Dynamic Shear Rheometer) DSR G*/sin δ 46 52 58 64 70 76 82 (PRESSURE AGING VESSEL) PAV 90 90 100 100 100 (110) 100 (110) 110 (110) Test Temperature Changes (Dynamic Shear Rheometer) DSR G* sin δ 10 7 4 25 22 19 16 13 10 7 25 22 19 16 13 31 28 25 22 19 16 34 31 28 25 22 19 37 34 31 28 25 40 37 34 28 31 ( Bending Beam Rheometer) BBR S Stiffness & m - value -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12-18 -24 (Bending Beam Rheometer) BBR Physical Hardening (Direct Tension) DT -24-30 -36 0-6 -12-18 -24-30 -36-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24-30 0-6 -12-18 -24 0-6 -12 Superpave Binder Specs -18-24 & Selections 31

Summary of How to Use PG Specification Determine 7-day max pavement temperatures 1-day minimum pavement temperature Use specification tables to select test temperatures Determine asphalt cement properties and compare to specification limits Superpave Binder Specs & Selections 32

PG Grade Increments Average 7-day Maximum Pavement Temperature 46 52 58 64 70 76 82 Average 1-day Minimum Pavement Temperature +2-4 -10-16 -22-28 -34

Prediction of PG Grades for Crude Blends Low Temp C -10-16 -22-28 -34-40 High Temp C 52 58 64 70 76 52-16 58-16 64-16 70-16 76-16 52-22 58-22 64-22 70-22 76-22 52-28 58-28 64-28 70-28 76-28 52-34 58-34 64-34 70-34 76-34 52-40 58-40 64-40 70-40 76-40 Low Quality Crudes High Quality Crudes Modifier Required Superpave Binder Specs & Selections 34

Is a PG a Modified Binder? Effect of Loading Rate Rule of 90 Reliability Rounding Effect of Traffic Example: PG 64-34 has a temperature range of 64 to - 34 or 98 C. Therefore, this binder is probably modified!! (Depends on Asphalt Source!)

Questions does it all make sense? Superpave Binder Specs & Selections 36

2024 © autodocbox.com Privacy Policy | Terms of Service | Feedback