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Publication Number: FHWA-RD-07-052
Date: September 2007

Long Term Pavement Performance Project Laboratory Materials Testing and Handling Guide

Protocol P27
Standard Test Method for Determining The Rheological Propertiesof Asphalt Binder Using A Dynamic Shear Rheometer (DSR) (AE07)

This LTPP Protocol covers the procedures for determining the dynamic shear modulus and phase angle of asphalt binder. The test shall be carried out in accordance with AASHTO T315-02 as described by the following.

4. SUMMARY AND TEST METHOD

4.5 The oscillatory loading frequency should be 10 rad/s using a sinusoidal waveform. The complex modulus (G*) and phase angle (d) are calculated automatically as part of the operation of the rheometer using proprietary computer software supplied by the equipment manufacturer.

8. PREPARATION OF APPARATUS

8.3 Select the test temperature based upon the laboratory testing plan designed for the individual SPS project. Allow the DSR to reach a stabilized temperature within ± 0.1°C (± 0.2°F) of test temperature.

13. REPORT

Following information shall be recorded for each test temperature:

13.3 Sample Identification shall include: Laboratory Identification Code, Region, State, State Code, SHRP ID, Layer Number, Field Set Number, Sample Area Number, Sample Location Number, and LTPP Sample Number.

13.4 Test Identification shall include: LTPP Test Designation, LTPP Protocol Number, Laboratory Test Number, and Test Date.

13.5 General test and sample information:

13.5.1 Material type should be stated as Original, Rolling Thin Film Oven (RTFO), Pressure Aging Vessel (PAV), or Field Aged.

13.5.2 For field aged specify time since construction, in months.

13.5.3 Test control mode should be indicated as Stress or Strain.

13.5.4 Test plate diameter, in millimeters.

13.5.5 Test gap, in micrometers.

13.5.6 Test temperature, in degree Celsius.

13.5.7 Number of conditioning cycles.

13.5.8 Conditioning frequency, in radians per second.

13.5.9 Test frequency, in radians per second.

13.5.10 Strain amplitude, in percent.

13.5.11 Torque amplitude, in millinewton meter.

13.5.12 AC performance grade.

13.6 Complex modulus and phase angle:

The different complex modulus and phase angle values obtained per cycle shall be reported, as well as their average and standard deviation.

13.7 Comments shall include LTPP standard comment code (s) as shown in Section 4.3 of this Guide, and any other note as needed.

LTPP LABORATORY MATERIAL HANDLING AND TESTING
LABORATORY MATERIAL TEST DATA
RHEOLOGICAL PROPERTIES OF ASPHALT BINDER
USING A DYNAMIC SHEAR RHEOMETER (DSR)
LAB DATA SHEET T27

ASPHALT CONCRETE LAYER (ASPHALT CEMENT PROPERTIES)
LTPP TEST DESIGNATION AE07/LTPP PROTOCOL P27

LABORATORY PERFORMING TEST:______________________________________________________________PRIVATE

LABORATORY IDENTIFICATION CODE: __ __ __ __

REGION _________________ STATE ___________________ STATE CODE __ __

EXPERIMENT NO _____ SHRP ID __ __ __ __

SAMPLED BY: ______________________________________________ FIELD SET NO. __

DATE SAMPLED: __ __-__ __-__ __ __ __ SAMPLING AREA No: SA- _____

LAYER NUMBER (FROM LAB SHEET L04 AND FORM T01B) __ LABORATORY TEST NUMBER __

LOCATION NUMBER __ __ __ LTPP SAMPLE NUMBER __ __ __ __

TEST DATE: __ __-__ __-__ __ __ __

1. Material type (Original = 1, RTFo = 2, PAV = 3, Field Aged = 4) __

2. For field aged, Time since construction, months __ __ __.__

3.Test control mode (Stress = 1, Strain= 2) __

4. Test plate diameter, mm __ __.__

5. Test gap, µm __ __ __ __

6. Number of conditioning cycles __ __

7. TEST TEMPERATURE, °c __ __.__

8. Conditioning frequency, rad/s __ __.__

9. Test frequency, rad/s __ __.__

10. Strain amplitude, percent __ __.__ __

11. Torque amplitude, mN·m __ __ __ __

12. AC performance grade PG __ __ - __ __

COMPLEX MODULUS AND PHASE ANGLE (See section 13.4 of Protocol P27)

Cycle No. Complex Modulus G* (kPa) Phase Angled(°) Cycle No. Complex Modulus G* (kPa) Phase Angled(°)
1 __ __ __ __ __.__ __ __.__ 6 __ __ __ __ __.__ __ __.__
2 __ __ __ __ __.__ __ __.__ 7 __ __ __ __ __.__ __ __.__
3 __ __ __ __ __.__ __ __.__ 8 __ __ __ __ __.__ __ __.__
4 __ __ __ __ __.__ __ __.__ 9 __ __ __ __ __.__ __ __.__
5 __ __ __ __ __.__ __ __.__ 10 __ __ __ __ __.__ __ __.__

13. Average Complex Modulus (G*), kPa __ __ __ __ __.__

14. Average Phase angle (d), ° __ __.__

15. standard deviation of complex modulus, kPa __ __ __ __ __.__

16. standard deviation of Phase angle (d), ° __ __.__

17. COMMENTS

      (a) CODE __ __ __ __ __ __ __ __ __ __ __ __

      (b) NOTE _______________________________________________________

SUBMITTED BY, DATECHECKED AND APPROVED, DATE
____________________________________________________________
LABORATORY CHIEF
Affiliation______________________
Affiliation______________________

 

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The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT).
The Federal Highway Administration (FHWA) is a part of the U.S. Department of Transportation and is headquartered in Washington, D.C., with field offices across the United States. is a major agency of the U.S. Department of Transportation (DOT). Provide leadership and technology for the delivery of long life pavements that meet our customers needs and are safe, cost effective, and can be effectively maintained. Federal Highway Administration's (FHWA) R&T Web site portal, which provides access to or information about the Agency’s R&T program, projects, partnerships, publications, and results.
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