Article
Construction & Building Technology
Bongsuk Park, Jian Zou, Reynaldo Roque, George Lopp, Yu Yan, Howard Moseley
Summary: This study focused on developing guidelines to determine the maximum RAP content in PMA mixtures based on RAP characteristics. Finer and stiffer RAP were found to be more detrimental to cracking resistance. The developed guidelines allowed up to 40% RAP depending on RAP characteristics, and were validated through full mixture testing.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Peyman Sadeghi, Ahmad Goli
Summary: The use of reclaimed asphalt pavement (RAP) in asphalt mixtures is necessary due to environmental benefits and economic issues. However, mixtures containing RAP have poor cracking performance at different temperatures. Therefore, evaluating the cracking performance of RAP is important. Semicircular bending (SCB) test was used to evaluate fracture characteristics, with indicators such as peak load, fracture energy and strain tolerance used. Experimental results showed that using a rejuvenator improved the cracking resistance of asphalt mixtures, with Vacuum Bottom performed best at 25°C and Oleic Acid performed best at -12°C.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Runhua Zhang, Eshan V. V. Dave, Jo E. E. Sias, Hassan A. A. Tabatabaee, Tony Sylvester, Zheng Wang
Summary: The present study evaluates binder and mixture testing methods to capture the compatibility of complex asphalt materials. The results indicate that the rheological characterization of asphalt binder or mixture may not capture the incompatibility between different components. Binder DSC analysis and mixture fracture tests show promise in evaluating the compatibility and the effect of incompatibility on mixture performance.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Mariusz Jaczewski, Marek Pszczola, Jacek Alenowicz, Dawid Rys, Bohdan Dolzycki, Piotr Jaskula
Summary: This paper determines the probability of thermal cracking in asphalt mixtures with different levels of reclaimed asphalt pavement (RAP) by conducting laboratory tests and using the thermal stress development method. The probability calculation takes into account the type and gradation of the mixture, as well as the quality and content of RAP. Two models, elastic and viscoelastic, are used to determine the thermal stresses. The addition of RAP decreases the low-temperature properties of all tested asphalt mixtures, but the cracking temperature can be increased by around 5-6 degrees Celsius with the addition of 20% RAP in the wearing and binder courses.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Maziar Mivehchi, Haifang Wen, Logan Cantrell
Summary: The issues associated with rutting and cracking in asphalt mixes require a balanced mix design and have attracted attention from researchers and practitioners. The use of recycled materials complicates asphalt mix performance, necessitating a systematic review of the effects of recycled materials and mix design parameters on mixes by contractors. Contractors need guidance to develop asphalt mixes meeting specifications for rutting and cracking tests.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Construction & Building Technology
Rezvan Babagoli, Navid Norouzi, Alireza Ameli
Summary: The research findings indicated that asphalt mixtures containing binders V have higher fracture energy compared to mixtures containing binders S, and as the percentage of RAP increases, the fracture energy decreases. High traffic mix designs with higher binder content exhibit higher fracture energy levels.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Anda Ligia Belc, Ion Octavian Pop, Florin Belc, Ciprian Costescu, Fateh Fakhari Tehrani
Summary: The mechanical and rheological characteristics of bitumen play a crucial role in the behavior and durability of bituminous road layers. Different additives have varying effects on the workability of asphalt mixtures, especially in terms of low temperature susceptibility, with waxes having the biggest influence on bitumen properties. Tests on bituminous mastic show that the limit temperature increases with the addition of filler in the blends.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Qiran Zhang, Xu Cai, Kuanghuai Wu, Li Chen, Ruida Zhang, Han Xiao, Hafiz Muhammad Zahid Hassan
Summary: The study analyzed the mechanical characteristics of contact interfaces in recycled asphalt mixture, finding that different contact types significantly impacted the shear performance, with the old-old contact type exhibiting the highest tangential elastic stiffness. The results suggest a significant influence of interface contact types on the shear test results.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Environmental Sciences
Shobhit Jain, Anush K. K. Chandrappa
Summary: Waste cooking oil (WCO) is being recognized as a potential rejuvenator in the pavement industry to increase the use of reclaimed asphalt (RA). This review article critically examines past and recent studies on the utilization of WCO and RA in asphalt mixtures, providing a comprehensive overview. The review discusses various characteristics related to the use of WCO in RA mixtures, including chemical, rheological, simulation, environmental, and economical findings. While WCO shows promise in enhancing low-to-intermediate temperature performance, challenges arise in moisture damage and higher temperature properties. Future research should focus on understanding different WCOs, optimizing the transesterification process, conducting molecular dynamic simulations, quantifying environmental and economic benefits, and studying field performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Construction & Building Technology
Ramin Rasouli, Alireza Khavandi Khiavi
Summary: This research evaluated the effect of hot mix asphalt components on its low-temperature performance. The study found that factors such as aggregate type, bitumen, F/B ratios, and mastics can influence the low-temperature performance of the mixture. The constructed master curves showed a consistent trend between the low-temperature crack resistance of mastics and the corresponding mixture.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Haisheng Ren, Zhendong Qian, Weirong Huang, Huailong Li, Yang Liu
Summary: This research experimentally investigated the low-temperature thermal cracking performance of waterborne epoxy asphalt emulsion (WEA) mastic. The effects of mineral fillers and the charge type of WEA emulsion on the low-temperature performance grade of WEA-cement mastic were studied. The results showed that mineral fillers and the charge type of WEA emulsion significantly impacted the low-temperature creep and relaxation properties of WEA mastics.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Hamsa Mahir Adnan, Abbas Oda Dawood
Summary: This study evaluated the impact of plastic box waste particles (PBWPs) on the mechanical characteristics of concrete mixtures, showing that PBWPs considerably enhanced concrete properties. The partial replacement of 5% PBWPs increased compressive strength by approximately 30.2%, with improvements in initial crack load and ultimate failure load observed in hybrid beams.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Environmental
Ashley F. Buss, Benjamin S. Claypool, Jonathan R. Higgins, Carlton Travis, Stacy Glidden
Summary: The study emphasizes the importance of low-temperature pavement performance in freezing areas in northern climates and the impact of recycled asphalt materials on pavement performance. Through laboratory testing and correlation studies, it was found that binders from different sources and blends with recycled asphalt can result in changes in the Delta T-c parameters.
JOURNAL OF COLD REGIONS ENGINEERING
(2021)
Article
Construction & Building Technology
Lubinda F. Walubita, Luis Fuentes, Hossain Tanvir, Harshavardhan R. Chunduri, Samer Dessouky
Summary: The study indicates that the low-temperature rheological properties of asphalt-binders, particularly stiffness, have promising potential in predicting the fracture properties of hot-mix asphalt. Laboratory tests show a correlation with a coefficient of determination exceeding 60%.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Lan Wang, Hui Wu, Zhaoyang Guo, Jiangsan Hu
Summary: This study investigates the effects of temperature and reclaimed asphalt pavement (RAP) content on the high-temperature performance and anti-reflection cracking performance of warm-mix recycled asphalt mixture. Triaxial repeated creep tests and overlay tests based on digital image correlation technology are used to analyze the performance of the recycled asphalt mixtures. The results indicate that the anti-deformation ability improves with an increase in RAP content but worsens with an increase in temperature. A permanent deformation model is established to evaluate the high-temperature performance, and a reflection cracking damage model accurately describes the damage evolution process. Fractal characteristics of reflection cracks are also studied. DIC technology can qualitatively and quantitatively evaluate the anti-reflection cracking performance from a mesoscopic perspective, filling the gap in current macroscopic evaluation methods.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Alexander Alisov, Chiara Riccardi, Johannes Schrader, Augusto Cannone Falchetto, Michael P. Wistuba
ROAD MATERIALS AND PAVEMENT DESIGN
(2020)
Article
Materials Science, Characterization & Testing
Johannes Schrader, Michael P. Wistuba, Augusto Cannone Falchetto, Chiara Riccardi, Alexander Alisov
JOURNAL OF TESTING AND EVALUATION
(2020)
Article
Engineering, Civil
Augusto Cannone Falchetto, Ki Hoon Moon, Dong Hyuk Kim
CANADIAN JOURNAL OF CIVIL ENGINEERING
(2020)
Article
Construction & Building Technology
Di Wang, Augusto Cannone Falchetto, Chiara Riccardi, Jan Westerhoff, Michael P. Wistuba
Summary: This paper experimentally investigates and models the impact of physical hardening and aging temperatures on the low temperature rheological properties of asphalt binders. The results indicate that physical hardening causes a significant increase in complex shear modulus and creep stiffness, which diminishes as conditioning time is extended. Linear correlations are observed between results from different conditioning times, and reducing aging temperatures can mitigate the effect of physical hardening.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Reza Sedghi, Ali Rezaei Lori, Alireza Bokaei, Augusto Cannone Falchetto
Summary: The study found that film thickness had the greatest impact on the characteristics of bituminous mastic, leading to a decrease in bond strength and work of fracture as film thickness increased. Air Cooled Copper Slag was identified as a suitable filler type for bituminous mastic, resulting in higher bond strength and work of fracture values in the prepared mastic, while an increase in filler content decreased bond strength.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2021)
Article
Engineering, Civil
Augusto Cannone Falchetto, Ki Hoon Moon, Di Wang, Hae-Won Park
Summary: This paper evaluates the dynamic modulus of three different asphalt mixtures types using five rheological models, including a newly developed formulation based on the combination of the CAM model and the sigmoidal function. The effectiveness of the models is compared graphically and statistically, showing clear differences in dynamic modulus computation between sigmoidal function-based models and CAM formulations. The newly introduced CAM model modified by the sigmodal function appears to provide reasonable fitting and may represent an alternative formulation for evaluation in current pavement design software.
CANADIAN JOURNAL OF CIVIL ENGINEERING
(2021)
Article
Engineering, Environmental
Ahmad Al-Qudsi, Augusto Cannone Falchetto, Di Wang, Stephan Buechler, Yun Su Kim, Michael P. Wistuba
COLD REGIONS SCIENCE AND TECHNOLOGY
(2020)
Article
Chemistry, Physical
Ki Hoon Moon, Augusto Cannone Falchetto, Hae Won Park, Di Wang
Article
Chemistry, Physical
Ki Hoon Moon, Augusto Cannone Falchetto
Article
Construction & Building Technology
Jianmin Ma, Guoqiang Sun, Daquan Sun, Yi Zhang, Augusto Cannone Falchetto, Tong Lu, Mingjun Hu, Ying Yuan
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Review
Green & Sustainable Science & Technology
Goshtasp Cheraghian, Augusto Cannone Falchetto, Zhanping You, Siyu Chen, Yun Su Kim, Jan Westerhoff, Ki Hoon Moon, Michael P. Wistuba
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Chemistry, Physical
Chichun Hu, Yucan Mai, Augusto Cannone Falchetto, Edith Tartari
Summary: This study investigated the feasibility and potential benefits of incorporating a hard natural asphalt binder obtained from Albania into the production of bituminous materials for pavement application in China. The results showed that the hard natural binder improved the stability of the binder blend at high and intermediate temperatures, as well as enhanced moisture susceptibility and rutting resistance of the mixture. The modification mechanism was mainly related to the enhancement of hydrogen bonds and Van der Waals forces, as well as stress concentration caused by silica particles in the binder.
Article
Construction & Building Technology
Sarra Drissi, Kim Hung Mo, Augusto Cannone Falchetto, Tung-Chai Ling
Summary: The study found that different mixing speeds mainly led to damage of mPCM particles and consequent leakage of phase change material. Additionally, the leakage had a greater impact on early age compressive strength compared to 28-day compressive strength.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Liang He, Yufeng Zheng, Alessio Alexiadis, Augusto Cannone Falchetto, Guannan Li, Jan Valentin, Wim Van den Bergh, Yuri Emmanuilovich Vasiliev, Karol J. Kowalski, James Grenfell
Summary: Molecular dynamics simulation was used to study the self-healing process of asphalts mixed with different healing agents. The results showed that plant oil was more effective in improving the healing rate of virgin asphalt, while aromatic oil was more suitable for short-term aged asphalt. The healing process depends on the diffusion of healing agent and asphalt into micro-cracks, with aromatic oil producing better mixing and leading to more uniform composition and improved mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Proceedings Paper
Construction & Building Technology
Di Wang, Augusto Cannone Falchetto, Ki Hoon Moon, Chiara Riccardi, Michael P. Wistuba
PROCEEDINGS OF THE 5TH INTERNATIONAL SYMPOSIUM ON ASPHALT PAVEMENTS & ENVIRONMENT (APE)
(2020)