Investigation on Adhesion Characteristics of Virgin-Aged Composite Binder and Binder-Aggregate System
Abstract
:1. Introduction
2. Objective and Scope
3. Materials and Sample Preparation
3.1. Materials
3.2. Sample Preparation and Pretreatment
4. Methodology and Experiments
4.1. Tests for Fundamental Properties
4.2. Modified Boiling Test
4.3. Pull-Off Test
5. Results and Discussions
5.1. Fundamental Performances of the Binders
5.1.1. Rheological Properties
5.1.2. Creep Recovery Capacity
5.1.3. Fatigue Resistance
5.2. Adhesion Characteristics of Aggregate-Binder
5.2.1. Results from Modified Boiling Tests
5.2.2. Failure Behaviors of the Binder-Aggregate System
5.2.3. Adhesion Characteristics and Moisture-Damage Resistance
6. Conclusions and Recommendations
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Properties | Unit | Virgin Binder | Aged Binder |
---|---|---|---|
Penetration (25 °C, 100 g, 5 s) | 0.01 mm | 55.6 | 23.5 |
Ductility (5 cm/min, 5 °C) | cm | 30.2 | 5 |
Softening point | °C | 78.9 | 86.3 |
Kinematic viscosity (135 °C) | Pa·s | 1.98 | - |
Elastic recovery (25 °C, 10) | % | 95 | - |
Residue after RTFOT | |||
Mass loss | % | 0.024 | - |
Penetration ratio (25 °C) | % | 75 | - |
Ductility (5 cm/min, 5 °C) | cm | 17.2 | - |
Binder Type | Formation | Schematic Description |
---|---|---|
Virgin binder (VB) | New SBS asphalt | |
Aged binder (AB) | Extracted from RAP | |
Blended binder (BB) | A mixture of virgin and aged binders | |
Composite binder (CB) | A two-layered combination of virgin binder and aged binder | |
Test | Objective | Thermostatic Treatment | Conditioning | Test Setting | ||
---|---|---|---|---|---|---|
Temperature | Duration | Dry | Wet | |||
DSR | Rheological characteristics | 120 °C | 0, 20, 40, 60, 90, 120, 150 min | Not applicable | Not applicable | 10–70 °C, 0–30 Hz |
MSCR | Creep resilience | 64 °C | ||||
LAS | Fatigue resistance | 25 °C | ||||
Modified boiling test | Moisture susceptibility | 24 h in air at 20 °C | 24 h in water at 40 °C | Full boiling | ||
Pull-off test | Adhesion performance | 20 °C |
Binder Type | Thermostatic Treatment | Drying Conditioning | Wetting Conditioning | ||||
---|---|---|---|---|---|---|---|
POTS | Failure State | POTS | Failure State | ||||
Average (MPa) | Cov (%) | Average (MPa) | Cov (%) | ||||
Virgin binder (VB) | - | 1.51 | 3.07 | C | 1.38 | 9.26 | C/A |
Aged binder (AB) | - | 2.76 | 2.10 | C/R | 2.54 | 2.25 | C/A |
Virgin-aged composite binder (CB) | 0 min | 1.67 | 6.14 | C | 1.17 | 7.10 | A |
20 min | 1.96 | 1.44 | C | 1.42 | 7.06 | A | |
40 min | 2.23 | 4.48 | C | 1.72 | 2.58 | C/A | |
60 min | 2.28 | 1.28 | C/A | 2.25 | 0.94 | C/A | |
90 min | 2.37 | 3.37 | C/A | 2.38 | 1.83 | C | |
120 min | 2.51 | 0.51 | C | 2.54 | 2.25 | C | |
150 min | 2.65 | 3.41 | C | 2.69 | 3.59 | C | |
Blended binder (BB) | 0 min | 1.80 | 3.90 | C/A | 1.64 | 5.49 | C/A |
20 min | 2.08 | 2.65 | C/A | ||||
40 min | 2.27 | 6.58 | C/A | ||||
60 min | 2.53 | 1.29 | C | ||||
90 min | 2.56 | 8.54 | C | ||||
120 min | 2.61 | 4.26 | C | ||||
150 min | 2.65 | 4.29 | C |
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Wu, H.; Xu, S.; Zhan, Y.; Song, W.; Bai, S. Investigation on Adhesion Characteristics of Virgin-Aged Composite Binder and Binder-Aggregate System. Coatings 2022, 12, 1413. https://doi.org/10.3390/coatings12101413
Wu H, Xu S, Zhan Y, Song W, Bai S. Investigation on Adhesion Characteristics of Virgin-Aged Composite Binder and Binder-Aggregate System. Coatings. 2022; 12(10):1413. https://doi.org/10.3390/coatings12101413
Chicago/Turabian StyleWu, Hao, Shidong Xu, Yiqun Zhan, Weimin Song, and Shu Bai. 2022. "Investigation on Adhesion Characteristics of Virgin-Aged Composite Binder and Binder-Aggregate System" Coatings 12, no. 10: 1413. https://doi.org/10.3390/coatings12101413