Article
Construction & Building Technology
Behnam Jahangiri, Mohammad M. Karimi, Oliver Giraldo-Londono, William G. Buttlar
Summary: This study proposes a framework to identify the low-temperature viscoelastic properties of asphalt concrete using DC(T) creep test, and develops a generalized Voigt-Kelvin model to model the creep compliance function of various asphalt mixtures. Numerical simulations validate the effectiveness of the proposed method for characterizing the viscoelastic properties of asphalt mixtures at low temperatures.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
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
Songqiang Chen, Li Xu, Shengqiang Jia, Jinchang Wang
Summary: This article analyzes the nonlinear viscoelastic properties of asphalt mixtures and establishes a nonlinear viscoelastic constitutive model. Uniaxial compressive creep experiments were conducted, and it was found that the fitting degree of the Schapery model was superior to that of the Findley model.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Chemistry, Physical
Kefei Liu, Chonglin Liu, Quan Li, Kang Jiang
Summary: Low-temperature crack resistance is a key issue affecting the promotion of rejuvenated asphalt. The low-temperature crack resistance of wood tar-based rejuvenated asphalt mixture is better than RA-102 rejuvenated asphalt mixture, but slightly worse than the original SBS asphalt mixture. The synergistic action of wood tar and biomass fiber improves the toughness and crack resistance of the wood tar-based rejuvenated asphalt mixture.
Article
Construction & Building Technology
Jun Liu, Jenny Liu
Summary: The study aims to develop models with high accuracy to predict the low-temperature creep compliances of asphalt mixtures containing reclaimed asphalt pavement. Through comparison between multiple linear regression and artificial neural network models, it was found that the proposed models have better prediction performance.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Chao Li, Xiaofeng Xie, Lan Wang, Yu Liu, Zhiqiang Liu, Jincheng Li
Summary: In this study, the cracking behavior of asphalt mixture at low temperatures was studied by analyzing the rheological properties and viscoelastic properties of steel slag asphalt mixture. The results showed that the creep rate and cumulative strain change rate of the mixture decreased with the decrease of temperature, and the relaxation time increased. The mixture specimens with steel slag had better low-temperature deformation adaptation performance compared to those with basalt as aggregate.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
Hui Wang, Weilin Huang, Junjie Cheng, Gang Ye
Summary: The virtual dynamic creep test conducted with the discrete element method showed a relative error of less than 10% and good authenticity. During the simulation test, with the increase of temperature or contact pressure, the axial strain of asphalt mixture increased, resulting in decreased resistance to permanent deformation and stress concentration in the failure period.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Polymer Science
Junxiu Lv, Xiaoyuan Zhang
Summary: This study established prediction models for shear parameters and dynamic creep instability of asphalt mixture under different high temperatures to reveal the instability mechanism of rutting in asphalt pavement. Experimental results showed an exponential relationship between shear stress level and cyclic time F-N at high temperature, and the effect of shear stress level and confining pressure on F-N was considered.
Article
Construction & Building Technology
Johannes Buechner, Michael P. Wistuba
Summary: In this article, creep properties of asphalt binders, asphalt mastics, and asphalt mixtures are tested and comparatively analyzed. The results show that the creep behavior of asphalt mixtures is significantly affected by the asphalt binder.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Jian Wang, Pui-Lam Ng, Yuhua Gong, Han Su, Jinsheng Du
Summary: The performance of porous asphalt mixture in low temperature environment is influenced mainly by modifier content, test temperature, and porosity. To ensure its good working performance in low temperature, the porosity and the required limits of maximum bending strain should be considered.
APPLIED SCIENCES-BASEL
(2021)
Article
Polymer Science
Yongjun Zhang, Xiu Liu, Boyuan Yin, Wenbo Luo
Summary: A nonlinear fractional viscoelastic plastic (NFVEP) creep model was proposed for asphalt mixture under high stresses, showing good agreement with experimental results in predicting the mechanical behavior.
Article
Chemistry, Physical
Xianrong Wang, Xilong Zhou, Xuan Zhang
Summary: This study investigated the use of geosynthetics in asphalt pavement to enhance mechanical properties. Results showed that geocell-reinforced specimens outperformed geogrid-reinforced specimens, and SBS-modified asphalt bonding layers were better than epoxy-modified asphalt.
Article
Materials Science, Multidisciplinary
Song Li, Xingxing Shi, Chundi Si, Binshuo Bao, Mengmeng Hu
Summary: The properties of asphalt mortar have a significant impact on the performance of an asphalt mixture. This study aimed to evaluate the correlation between the high-temperature performance of an asphalt mixture and the rheological properties of its corresponding asphalt mortar. The multisequence repeated loading (MSRL) test was used to assess the high-temperature performance, while a modified multiple-stress creep-recovery (MSCR) test was proposed to evaluate the rheological properties of asphalt mortar. The results showed a strong correlation between the rheological response of asphalt mortar and the high-temperature behavior of the asphalt mixture.
Article
Nanoscience & Nanotechnology
Yunhuan Sui, Hongjun Zhang, Xingzhong Zhang
Summary: The study conducted creep experiments under continuous casting conditions, revealing the temperature and stress correlation of creep phenomena, with temperature scheme playing a dominant role over stress in the creep process. A constitutive model based on empirical physics was established to predict creep curves, with analysis showing the dependency of substructure characteristics on creep temperatures and the relationship between microstructure features and slab creep resistance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Nagarjuna Remalli, Mathias Munch, Mohsin Hasan, K. Nanda Kishore, Felix Stern, Nikolas Baak, Frank Walther, Manjini Sambandam, Steffen Klapprott, Koteswararao Rajulapati, Robert Brandt
Summary: Despite the well-known fact of low temperature creep deformation in high strength steels, its rate controlling mechanism remains unclear. This study experimentally validates the exhaustion creep model for low temperature creep behavior in SAE 9254 spring steel and proposes a hypothesis that dislocation glide in the retained austenite phase predominantly contributes to low temperature creep strain. The reduction in creep rate with time is attributed to the exhaustion of this deformation mechanism by strain-induced martensitic transformation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Construction & Building Technology
Alexander Alisov, Chiara Riccardi, Johannes Schrader, Augusto Cannone Falchetto, Michael P. Wistuba
ROAD MATERIALS AND PAVEMENT DESIGN
(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
Construction & Building Technology
Di Wang, Augusto Cannone Falchetto, Chiara Riccardi, Michael P. Wistuba
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Fucheng Guo, Jiupeng Zhang, Jianzhong Pei, Bochao Zhou, Augusto Cannone Falchetto, Zhuang Hu
CONSTRUCTION AND BUILDING MATERIALS
(2020)
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)