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An Investigation of the Endurance Limit of Hot-Mix Asphalt Concrete Using a New Uniaxial Fatigue Test Protocol
Final Report

Appendix B: Graphs Presenting Fatigue Test Results

I80-60

The code given below describes the various events shown in the plots on the pages that follow:

Temperature:
No. 1T0@ 1.4 million cyclesIndicates out of control. Data after this point is invalid.
No. 2Ti@ 1.9 million cyclesIndicates in control. Data after this point is valid.
No. 3T0@ 4.0 million cyclesIndicates out of control. Data after this point is invalid.
No. 4Ti@ 4.5 million cyclesIndicates in control. Data after this point is valid.
No. 5T0@ 9.9 million cyclesIndicates out of control. Data after this point is invalid.
No. 6Ti@ 11.9 million cyclesIndicates in control. Data after this point is valid.
Attempt to Apply Protocol:
No. 7A2@ 1.89 million cyclesSecond attempt at running test, Start Stage I.
No. 8A2@ 4.51 million cyclesThird attempt at running test, Start Stage I.
Start Stage:
No. 9SII@ 0.85 million cyclesStart of Stage II (First Attempt)
No. 10SII@ 2.67 million cyclesStart of Stage II (Second Attempt)
No. 11SII@ 5.18 million cyclesStart of Stage II (Third Attempt)
No. 12SIII@ 7.83 million cyclesStart of Stage III (Third Attempt)
Strain Baseline Adjusted:
No. 13σ1@ 1.86 million cyclesStrain baseline adjusted.
No. 14σ2@ 4.49 million cyclesStrain baseline adjusted.
Equipment Issues:
No. 15P1@ 1.65 million cyclesStrain baseline adjusted.
No. 16P2@ 4.40 million cyclesStrain baseline adjusted.
Test I80-60

Complex Modulus |E*| (GPa) / Load Cycles (millions) / Strain Amplitude

Phase Angle (degrees) / Load Cycles (millions) / Strain Amplitude (µσ)

Temperature (°C) / Load Cycles (millions)

Strain Amplitude (µ-strain) / Load Cycles (millions)

Strain Baseline (µ-strain) / Load Cycles (millions)

M21673

The code given below describes the various events shown in the plots on the pages that follow:

Start Stage:
No. 1SII@ 2.63 million cyclesStage II started.
No. 2SIII@ 7.97 million cyclesStage III started.
Equipment Issues:
No. 3DA1@ 4.50 million cyclesData acquisition lost, test continued.
No. 4DA2@ 7.16 million cyclesData acquisition regained.
Strain Baseline Adjusted:
No. 5σ1@ 1.83 million cyclesStrain baseline adjusted.
No. 6σ2@ 7.17 million cyclesStrain baseline adjusted.

Complex Modulus |E*| (GPa) / Load Cycles (millions) / Strain Amplitude

Phase Angle (degrees) / Load Cycles (millions) / Strain Amplitude (µe)

Temperature (°C) / Load Cycles (millions)

Strain Amplitude (µ-strain) / Load Cycles (millions)

Strain Baseline (µ-strain) / Load Cycles (millions)

M21676

The code given below describes the various events shown in the plots on the pages that follow:

Temperature:
No. 1T0@ 4.52 million cyclesIndicates out of control. Data after this point is invalid.
No. 2Ti@ 4.52 million cyclesIndicates in control. Data after this point is valid.
Attempt to Apply Protocol:
No. 3A2@ 4.52 million cyclesSecond attempt at running test, Start Stage I.
Start Stage:
No. 4SII@ 3.54 million cyclesStart of Stage II (First Attempt).
No. 5SII@ 6.14 million cyclesStart of Stage II (Second Attempt).
No. 6SIII@ 10.37 million cyclesStart of Stage III (Second Attempt).
Strain Baseline Adjusted:
No. 7σ1@ 4.55 million cyclesStrain baseline adjusted.
No. 8σ2@ 4.66 million cyclesStrain baseline adjusted.
No. 9σ3@ 5.87 million cyclesStrain baseline adjusted.

Complex Modulus (Gpa) / Load Cycles (millions) / Strain Amplitude ( µe )

Phase Angle (degrees) / Load Cycles (millions) / Strain Amplitude (µe)

Temperature °C / Load Cycles (millions)

Strain Amplitude (µ-strain) / Load Cycles (millions)

Strain Baseline (µ-strain) / Load Cycles (millions)

M32986

The code given below describes the various events shown in the plots on the pages that follow:

Attempt to Apply Protocol:
No. 1A2@ 3.23 million cyclesSecond attempt to apply protocol.
Start Stage:
No. 2SII@ 1.83 million cyclesStart of Stage II in 1st attempt.
No. 3SII@ 4.10 million cyclesStart of Stage II for 2nd attempt.
No. 4SIII@ 8.35 million cyclesStart of Stage III for 2nd attempt.
Strain Baseline Adjusted:
No. 5σ1@ 1.82 million cyclesStrain baseline adjusted.
No. 6σ2@ 2.44 million cyclesStrain baseline adjusted.
No. 7σ3@ 3.18 million cyclesStrain baseline adjusted.
No. 8σ4@ 5.63 million cyclesStrain baseline adjusted.
No. 9σ5@ 5.80 million cyclesStrain baseline adjusted.

Complex Modulus |E*| (GPa) / Load Cycles (millions) / Strain Amplitude

Phase Angle (degrees) / Load Cycles (millions) / Strain Amplitude (µe)

Temperature (°C) / Load Cycles (millions)

Strain Amplitude (µ-strain) / Load Cycles (millions)

Strain Baseline (µ-strain) / Load Cycles (millions)

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