Long-Term Field Rutting and Moisture Susceptibility Performance of Warm-Mix Asphalt Pavement

2016 ◽  
Vol 2575 (1) ◽  
pp. 103-112 ◽  
Author(s):  
Haifang Wen ◽  
Shenghua Wu ◽  
Louay N. Mohammad ◽  
Weiguang Zhang ◽  
Shihui Shen ◽  
...  
Keyword(s):  
Asphalt Pavement ◽  
Warm Mix Asphalt ◽  
Moisture Susceptibility ◽  
Term Field

High-Performance Thin-Lift Overlays with High Reclaimed Asphalt Pavement Content and Warm-Mix Asphalt Technology

2012 ◽  
Vol 2293 (1) ◽  
pp. 18-28 ◽  
Author(s):  
Walaa S. Mogawer ◽  
Alexander J. Austerman ◽  
Robert Kluttz ◽  
Michael Roussel
Keyword(s):  
High Performance ◽  
Asphalt Pavement ◽  
Warm Mix Asphalt ◽  
Asphalt Binders ◽  
Reclaimed Asphalt Pavement ◽  
Moisture Susceptibility ◽  
Reclaimed Asphalt ◽  
Pavement Preservation ◽  
Asphalt Overlay ◽  
Structural Capacity

A high-performance thin asphalt overlay (HPThinOL) is specified as having a thickness of 1 in. or less and is used in applications requiring high levels of rutting and fatigue resistance. HPThinOLs are used as a pavement preservation strategy and are placed on pavements that have remaining structural capacity that is expected to outlive that strategy. Current specifications for HPThinOLs generally call for a polymer-modified asphalt (PMA). However, PMA binders are more expensive than unmodified asphalt binders. This expense, coupled with the higher binder content requirement generally associated with HPThinOL, could lead to an initial higher cost in relation to other pavement preservation strategies. Although the higher initial cost can be offset by incorporating high amounts of reclaimed asphalt pavement (RAP), the use of high amounts of RAP in PMA mixtures might adversely affect the mixture performance (stiffness, cracking, or workability). Warm-mix asphalt (WMA) technology may improve the workability of HPThinOL that incorporates high RAP content and PMA binders. This study evaluated the effect of PMA binders, high RAP content, and WMA technology on the stiffness, resistance to reflective cracking, moisture susceptibility, and workability of HPThinOL mixtures. PMA binders and high RAP content increased the stiffness of HPThinOL significantly; however, the use of WMA technology lowered mixture stiffness and improved workability. PMA may improve the cracking resistance, moisture susceptibility, and rutting resistance of high-RAP HPThinOL mixtures, depending on whether a WMA technology is used.

scholarly journals Residual Fatigue Properties of Asphalt Pavement after Long-Term Field Service

Materials ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 892 ◽  
Author(s):  
Peide Cui ◽  
Yue Xiao ◽  
Mingjing Fang ◽  
Zongwu Chen ◽  
Mingwei Yi ◽  
...  
Keyword(s):  
Asphalt Pavement ◽  
Fatigue Properties ◽  
Field Service ◽  
Residual Fatigue ◽  
Term Field

Long-Term Field Performance of Flexible Pavements Using Warm Mix Asphalt Technologies

2020 ◽  
Author(s):  
SHIHUI SHEN ◽  
WEIGUANG ZHANG ◽  
SHENGHUA WU ◽  
LOUAY MOHAMMAD ◽  
BALASINGAM MUHUNTHAN
Keyword(s):  
Flexible Pavements ◽  
Field Performance ◽  
Warm Mix Asphalt ◽  
Term Field

Field Performance of Foaming Warm Mix Asphalt Pavement

2019 ◽  
Vol 2673 (3) ◽  
pp. 281-294 ◽  
Author(s):  
Shenghua Wu ◽  
Weiguang Zhang ◽  
Shihui Shen ◽  
Balasingam Muhunthan
Keyword(s):  
Field Performance ◽  
Warm Mix Asphalt ◽  
Void Content ◽  
Transverse Cracking ◽  
Water Based ◽  
Asphalt Content ◽  
Air Void ◽  
Air Void Content ◽  
Term Field

Water-containing and water-based foaming warm mix asphalt (WMA) technologies have been widely used in recent years but their long-term field performance is scarcely documented. This paper summarizes the field performances of six water-containing foaming and 10 water-based foaming WMA pavements across the United States and compares them with corresponding hot mix asphalt (HMA) pavements. Two series of field distress surveys were conducted to measure wheel-path longitudinal cracking, transverse cracking, and rut depth. Field cores were extracted to measure the in-place air void content, aggregate gradation, and asphalt content. The volumetric properties and field performance of foaming WMA and HMA control pavements were evaluated. The foaming WMA pavements showed slightly higher in-place air void (i.e., lower in-place density) than the HMA pavements. It was also found that the foaming WMA pavements in general had comparable or more wheel-path longitudinal cracking than the HMA pavements. The long-term field performance of foaming WMA pavements for transverse cracking and rutting were found to be similar to control HMA pavements. The study also reinforced the importance of in-place air void and asphalt content, finding that slightly higher asphalt content and lower in-place air void content may be beneficial for long-term resistance to cracking of asphalt pavements. As a result of the findings, the optimal pavement maintenance time was estimated to be four to five years since paving for full-depth pavement projects.

Long-Term Field Performance of Warm Mix Asphalt Technologies

2017 ◽  
Author(s):  
Washington State University ◽  
Louisiana Transportation Research Center ◽  
Pennsylvania State University—Altoona ◽  
◽  
◽  
...  
Keyword(s):  
Field Performance ◽  
Warm Mix Asphalt ◽  
Term Field

Evaluation of Warm Mix Asphalt Performance with High RAP Content

2015 ◽  
Vol 73 (4) ◽  
Author(s):  
Ahmad Kamil Arshad ◽  
Frag Ahmed Ma Kridan ◽  
Noor Azreena Kamaluddin ◽  
Ekarizan Shafie
Keyword(s):  
Resilient Modulus ◽  
Asphalt Pavement ◽  
Warm Mix Asphalt ◽  
Beam Specimen ◽  
Moisture Susceptibility ◽  
Reclaimed Asphalt ◽  
Pavement Materials ◽  
Indirect Tensile ◽  
Asphalt Performance ◽  
Cost Of Materials

The pavement industry is currently forced to find alternative ways to produce asphaltic concrete with the  dwindling supply of new resources and the spiraling cost of materials. Warm Mix Asphalt (WMA) using reclaimed asphalt pavement (RAP) offers a sustainable solution to the problem by reducing energy requirements for production and the reuse of old pavement materials. The effects of warm mix asphalt additive (Sasobit) on mixes containing different percentages of RAP were investigated in the laboratory. Three different concentrations of RAP (30%, 40% and 50%) with 1.5% Sasobit by weight of binder were added, and Marshall method was used to produce all samples investigated. Two different mixing and compaction temperatures were used, 155°C and 135°C for mixing and 135°C and 120°C  for compaction. The performance of the mixes in terms of stiffness and moisture damage were investigated by carrying out the Indirect Tensile Resilient Modulus Test (ASTM D4123) and moisture susceptibility test (ASTM D 4867). The results obtained showed that there were no substantial differences in volumetric properties, stability and stiffness values of reclaimed mixes than the control mix (conventional hot mix asphalt). In addition, all the mixes investigated achieved the required minimum TSR of 80%. Measured rut depth using the Asphalt Pavement Analyser (APA) device and fatigue cycles to failure using beam specimen indicated that the mixes performed similar to or better than the control mix. The results showed that warm mix asphalt using sasobit-additive and containing high percentages of RAP could be a sustainable alternative to the conventional HMA mix.  

scholarly journals Evaluation of warm mix asphalt performance incorporating high RAP content

2016 ◽  
Vol 43 (4) ◽  
pp. 343-350 ◽  
Author(s):  
Xuan Dai Lu ◽  
Mofreh Saleh
Keyword(s):  
Asphalt Pavement ◽  
Warm Mix Asphalt ◽  
Asphalt Mixtures ◽  
Reclaimed Asphalt Pavement ◽  
Test Results ◽  
Moisture Susceptibility ◽  
Rutting Resistance ◽  
Reclaimed Asphalt ◽  
Asphalt Performance ◽  
Characterization Test

Using reclaimed asphalt pavement (RAP) increases the sustainability benefits and can enhance the performance of warm mix asphalt (WMA) compared to traditional hot mix asphalt (HMA). However, the RAP content is generally limited in WMA because adding high RAP content may reduce the performance of WMA. In this paper, the authors studied the possibility of incorporating high RAP content from 25 to 70% by mass of WMA by using Evotherm as an additive. Laboratory performance of WMA–RAP mixtures was characterized and compared to a control HMA in terms of moisture susceptibility, rutting resistance, and fatigue characterization. Test results showed that Evotherm greatly improved the moisture resistance of WMA–RAP mixtures compared to HMA. Increasing RAP content made WMA–RAP mixtures stiffer and enhanced the rutting resistance, but decreased the fatigue resistance of the mixtures. Therefore, the maximum RAP content needs to be determined to ensure balance between the fatigue and rutting characteristics of asphalt mixtures.

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