Long Term Pavement Performance Project Laboratory Materials Testing And Handling Guide
Protocol P27
Standard Test Method for Determining the Rheological Properties of 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 (δ) 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 Angleδ(°) |
Cycle No. |
Complex Modulus G* (kPa) |
Phase Angleδ(°) |
| 1 |
__ __ __ __ __.__ |
__ __.__ |
6 |
__ __ __ __ __.__ |
__ __.__ |
| 2 |
__ __ __ __ __.__ |
__ __.__ |
7 |
__ __ __ __ __.__ |
__ __.__ |
| 3 |
__ __ __ __ __.__ |
__ __.__ |
8 |
__ __ __ __ __.__ |
__ __.__ |
| 4 |
__ __ __ __ __.__ |
__ __.__ |
9 |
__ __ __ __ __.__ |
__ __.__ |
| 5 |
__ __ __ __ __.__ |
__ __.__ |
10 |
__ __ __ __ __.__ |
__ __.__ |
13. Average Complex Modulus (G*), kPa __ __ __ __ __.__
14. Average Phase angle (δ), ° __ __.__
15. standard deviation of complex modulus, kPa __ __ __ __ __.__
16. standard deviation of Phase angle (δ), ° __ __.__
17. COMMENTS
(a) CODE __ __ __ __ __ __ __ __ __ __ __ __
(b) NOTE _______________________________________________________
| SUBMITTED BY, DATE | CHECKED AND APPROVED, DATE |
| ______________________________ | ______________________________ |
LABORATORY CHIEF
Affiliation______________________ | Affiliation______________________ |
