Effects of Recycled Asphalt Pavement Amounts on Low-Temperature Cracking Performance of Asphalt Mixtures Using Acoustic Emissions

2011 ◽  
Vol 2208 (1) ◽  
pp. 64-71 ◽  
Author(s):  
Behzad Behnia ◽  
Eshan V. Dave ◽  
Sarfraz Ahmed ◽  
William G. Buttlar ◽  
Henrique Reis
Keyword(s):  
Low Temperature ◽  
Asphalt Pavement ◽  
Acoustic Emissions ◽  
Asphalt Mixtures ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt ◽  
Cracking Performance ◽  
Low Temperature Cracking

Low-Temperature Cracking of Recycled Asphalt Mixtures

2012 ◽  
pp. 1261-1270 ◽  
Author(s):  
N. Tapsoba ◽  
C. Sauzéat ◽  
H. Benedetto ◽  
H. Baaj ◽  
M. Ech
Keyword(s):  
Low Temperature ◽  
Asphalt Mixtures ◽  
Recycled Asphalt ◽  
Low Temperature Cracking

Mechanistic and Volumetric Properties of Asphalt Mixtures with Recycled Asphalt Pavement

2005 ◽  
Vol 1929 (1) ◽  
pp. 28-36 ◽  
Author(s):  
Jo Sias Daniel ◽  
Aaron Lachance
Keyword(s):  
Dynamic Modulus ◽  
Creep Compliance ◽  
Asphalt Pavement ◽  
Superposition Principle ◽  
Asphalt Mixtures ◽  
Volumetric Properties ◽  
Recycled Asphalt Pavement ◽  
Recycled Asphalt ◽  
Creep Flow ◽  
Tension And Compression

This research examines how the addition of recycled asphalt pavement (RAP) changes the volumetric and mechanistic properties of asphalt mixtures. A Superpave® 19-mm mixture containing 0% RAP was the control for evaluating properties of mixes containing 15%, 25%, and 40% RAP. Two types of RAP were evaluated: a processed RAP and an unprocessed RAP (grindings). Testing included dynamic modulus in tension and compression, creep compliance in compression, and creep flow in compression. Dynamic modulus and creep compliance master curves were constructed with the use of the time–temperature superposition principle to describe the behavior of each mix over a range of temperatures. The voids in mineral aggregate (VMA) and voids filled with asphalt (VFA) of the RAP mixtures increased at the 25% and 40% levels, and there was also an influence of preheating time on the volumetric properties. The dynamic modulus of the processed RAP mixtures increased from the control to 15% RAP level, but the 25% and 40% RAP mixtures had dynamic modulus curves similar to that of the control mixture in both tension and compression. The creep compliance curves showed similar trends. A combination of gradation, asphalt content, and volumetric properties is likely the cause of these trends.

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.

Evaluation of Low-Temperature Cracking Performance of Warm-Mix Asphalt Mixtures

2012 ◽  
Vol 2294 (1) ◽  
pp. 81-88 ◽  
Author(s):  
Brian Hill ◽  
Behzad Behnia ◽  
Salman Hakimzadeh ◽  
William G. Buttlar ◽  
Henrique Reis
Keyword(s):  
Low Temperature ◽  
Warm Mix Asphalt ◽  
Asphalt Mixtures ◽  
Cracking Performance ◽  
Low Temperature Cracking

scholarly journals Cold In-Place Recycling Asphalt Mixtures: Laboratory Performance and Preliminary M-E Design Analysis

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2036
Author(s):  
Dongzhao Jin ◽  
Dongdong Ge ◽  
Siyu Chen ◽  
Tiankai Che ◽  
Hongfu Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Dynamic Modulus ◽  
Asphalt Pavement ◽  
Asphalt Binder ◽  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Asphalt Emulsion ◽  
Moisture Susceptibility ◽  
Low Temperature Cracking

Cold in-place recycling (CIR) asphalt mixtures are an attractive eco-friendly method for rehabilitating asphalt pavement. However, the on-site CIR asphalt mixture generally has a high air void because of the moisture content during construction, and the moisture susceptibility is vital for estimating the road service life. Therefore, the main purpose of this research is to characterize the effect of moisture on the high-temperature and low-temperature performance of a CIR asphalt mixture to predict CIR pavement distress based on a mechanistic–empirical (M-E) pavement design. Moisture conditioning was simulated by the moisture-induced stress tester (MIST). The moisture susceptibility performance of the CIR asphalt mixture (pre-mist and post-mist) was estimated by a dynamic modulus test and a disk-shaped compact tension (DCT) test. In addition, the standard solvent extraction test was used to obtain the reclaimed asphalt pavement (RAP) and CIR asphalt. Asphalt binder performance, including higher temperature and medium temperature performance, was evaluated by dynamic shear rheometer (DSR) equipment and low-temperature properties were estimated by the asphalt binder cracking device (ABCD). Then the predicted pavement distresses were estimated based on the pavement M-E design method. The experimental results revealed that (1) DCT and dynamic modulus tests are sensitive to moisture conditioning. The dynamic modulus decreased by 13% to 43% at various temperatures and frequencies, and the low-temperature cracking energy decreased by 20%. (2) RAP asphalt incorporated with asphalt emulsion decreased the high-temperature rutting resistance but improved the low-temperature anti-cracking and the fatigue life. The M-E design results showed that the RAP incorporated with asphalt emulsion reduced the international roughness index (IRI) and AC bottom-up fatigue predictions, while increasing the total rutting and AC rutting predictions. The moisture damage in the CIR pavement layer also did not significantly affect the predicted distress with low traffic volume. In summary, the implementation of CIR technology in the project improved low-temperature cracking and fatigue performance in the asphalt pavement. Meanwhile, the moisture damage of the CIR asphalt mixture accelerated high-temperature rutting and low-temperature cracking, but it may be acceptable when used for low-volume roads.

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