Characterization of Fatigue Performance of Cold Mix Recycled Asphalt Mixtures Through Uniaxial Tension-Compression Testing

2021 ◽  
Author(s):  
Pejoohan Tavassoti ◽  
Mansour Solaimanian ◽  
Xuan Chen
Keyword(s):  
Uniaxial Tension ◽  
Asphalt Mixtures ◽  
Compression Testing ◽  
Fatigue Performance ◽  
Recycled Asphalt

scholarly journals Potential of Using Imidazoline in Recycled Asphalt Pavement

2019 ◽  
Vol 14 (4) ◽  
pp. 521-542
Author(s):  
Robert Jurczak ◽  
Paweł Mieczkowski ◽  
Bartosz Budziński
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Pavement ◽  
Asphalt Mixtures ◽  
Fatigue Performance ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt ◽  
Stiffness Modulus ◽  
Optimum Content ◽  
Environmental Considerations ◽  
Freezing Temperatures

The environmental considerations need to be taken into account in any road resurfacing and upgrading project, for example, by reusing asphalt rubble for production of new pavement courses. Mixtures containing larger amounts of recycled asphalt pavement are improved by adding rejuvenator additives. The tests performed on the recycled asphalt mixtures containing lard imidazoline confirm the suitability of this agent for paving applications. Lard imidazoline was found to improve the stiffness modulus, fatigue performance and resistance to the action of water and freezing temperatures. The parameters obtained at the optimum content of additive complied with the criteria defined for virgin asphalt concrete and other mixtures of that kind.

Aggregate gradation effect on the fatigue performance of recycled asphalt mixtures

2019 ◽  
Vol 22 (1) ◽  
pp. 165-184 ◽  
Author(s):  
G. Bharath ◽  
K. Sudhakar Reddy ◽  
Vivek Tandon ◽  
M. Amaranatha Reddy
Keyword(s):  
Asphalt Mixtures ◽  
Fatigue Performance ◽  
Recycled Asphalt ◽  
Aggregate Gradation

Stiffness Characterization of Asphalt Mixtures with High Recycled Material Content and Recycling Agents

2017 ◽  
Vol 2633 (1) ◽  
pp. 58-68 ◽  
Author(s):  
Fawaz Kaseer ◽  
Fan Yin ◽  
Edith Arámbula-Mercado ◽  
Amy Epps Martin
Keyword(s):  
Resilient Modulus ◽  
Asphalt Mixtures ◽  
Test Results ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Material Content ◽  
Performance Grade ◽  
Recycled Material

Economic and environmental considerations have prompted the use of reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) in asphalt mixtures. However, given the concerns about long-term pavement performance, state departments of transportation (DOTs) tend to limit the quantities of these recycled materials unless certain mixture modifications are made [e.g., use of a softer virgin binder performance grade (PG) and warm-mix asphalt technology, the addition of a recycling agent (RA), or any combination of these modifications]. This study focused on the stiffness characterization of recycled asphalt mixtures with combinations of virgin binder PG, RAP, RAS, and RA. Materials were collected from two field projects in Texas and Indiana, and laboratory specimens were prepared and tested for resilient modulus, and dynamic modulus (| E*|) after short-term oven aging (STOA) and long-term oven aging (LTOA). An RA effectiveness parameter was proposed to quantify the rejuvenating effect of RA, which was defined as the percentage reduction in mixture stiffness for the recycled mixture with RA versus the corresponding control mixture without RA. Furthermore, the | E*| test results were analyzed with a Black Space diagram to discriminate asphalt mixtures with different stiffness and relaxation characteristics. The test results indicated that the incorporation of RA was effective in reducing the stiffness of asphalt mixtures with high recycled material content, but the effectiveness diminished with aging. Moreover, recycled mixtures with a softer and less brittle virgin binder and an RA at a higher dosage showed desirable stiffness and relaxation properties after STOA and LTOA.

scholarly journals Fatigue Evaluation of Recycled Asphalt Mixture Based on Energy-Controlled Mode

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Tao Ma ◽  
Kai Cui ◽  
Yongli Zhao ◽  
Xiaoming Huang
Keyword(s):  
Fatigue Life ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Fatigue Performance ◽  
Fatigue Properties ◽  
Dissipated Energy ◽  
Recycled Asphalt ◽  
Reclaimed Asphalt ◽  
Bending Fatigue Test ◽  
Fatigue Evaluation

The fatigue properties of asphalt mixtures are important inputs for mechanistic-empirical pavement design. To understand the fatigue properties of asphalt mixtures better and to predict the fatigue life of asphalt mixtures more precisely, the energy-controlled test mode was introduced. Based on the implementation theory, the laboratory practice for the energy-controlled mode was realized using a four-point-bending fatigue test with multiple-step loading. In this mode, the fatigue performance of typical AC-20 asphalt specimens with various reclaimed asphalt pavement (RAP) contents was tested and evaluated. Results show that the variation regulation of the dissipated energy and accumulative energy is compatible with the loading control principle, which proves the feasibility of the method. In addition, the fatigue life of the asphalt mixture in the energy-controlled mode was between that for the stress-controlled and strain-controlled modes. The specimen with a higher RAP content has a longer fatigue life and better fatigue performance.

Microstructural Characterization of Asphalt Mixtures Containing Recycled Asphalt Materials

2013 ◽  
Vol 25 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Augusto Cannone Falchetto ◽  
Antonio Montepara ◽  
Gabriele Tebaldi ◽  
Mihai O. Marasteanu
Keyword(s):  
Microstructural Characterization ◽  
Asphalt Mixtures ◽  
Recycled Asphalt ◽  
Asphalt Materials

scholarly journals Investigation of fatigue performance of asphalt mixtures and FAM mixes with high recycled asphalt material contents

2022 ◽  
Vol 314 ◽  
pp. 125607
Author(s):  
Liya Jiao ◽  
Mohamed Elkashef ◽  
John T. Harvey ◽  
Mohammad Ashiqur Rahman ◽  
David Jones
Keyword(s):  
Asphalt Mixtures ◽  
Fatigue Performance ◽  
Recycled Asphalt
Sign in / Sign up

Export Citation Format

Share Document