Article
Construction & Building Technology
Xiyan Fan, Songtao Lv, Dongdong Ge, Chaochao Liu, Xinghai Peng, Zihao Ju
Summary: This study presents a new method for evaluating the fatigue performance of asphalt mixtures. By considering the effect of temperature and loading time, a new fatigue model was built and the time-temperature equivalence was confirmed. The experimental results showed that temperature and loading rate affect the fatigue performance of asphalt mixtures, and can be described using a single model.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Yining Zhang, Huailei Cheng, Lijun Sun, Liping Liu, Yue Hu
Summary: The current mix design method based on volumetric properties is effective for conventional HMA, but not for hard HMAs designed with harder asphalt binders. Increasing asphalt content is considered an effective way to design hard HMAs and prevent thermal cracking. This research established suitable volumetric criteria for designing hard HMAs based on experiments. Two key volumetric criteria of AFT and VMA were identified, indicating that higher values are required for designing hard HMAs compared with conventional ones.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Xiyin Liu, Zhi Li, Siyu Chen, Yang Zhou
Summary: The fatigue life of ATB mixture can be improved by reducing penetration grade, increasing aggregate size, or enhancing asphalt-aggregate ratio. High modulus ATB mixture shows better fatigue and rutting resistance performance.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Wang Xianrong, Zhang Xiedong, Zhu Yunsheng, Li Xiaowei
Summary: This study developed a new method to improve the service life of asphalt pavement by adding geocell as a reinforcement for asphalt mixture. The fatigue life of reinforced specimens was significantly improved compared to unreinforced specimens, with improvement rates dependent on loading temperature. The viscoelastic damage model showed changes in elastic modulus and viscosity coefficients with stress ratio and loading temperature, indicating the beneficial effects of using geocell reinforcement in asphalt pavement.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Bhaskar Pratim Das, Saswati Das, Anjan Kumar Siddagangaiah
Summary: Fatigue cracking is a major distress in asphalt pavements, with factors like aging and moisture intrusion complicating the process. This study used a probabilistic approach to examine the effects of aging and moisture conditioning on fatigue damage in asphalt mixtures. The results showed that stiffness modulus and fatigue life of asphalt mixtures increased with aging levels, but decreased with more moisture conditioning cycles. Moisture had a greater negative impact on fatigue life at lower temperatures, and the probability of fatigue damage was higher in moisture conditioned asphalt mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yangsen Cao, Zhuangzhuang Liu, Wenjia Song
Summary: Nano-alumina can be used as a modifier for asphalt mixture to improve its performance, except for low-temperature properties. It enhances high-temperature properties, water stability, and fatigue performance. The most balanced performance of the modified asphalt mixture is achieved with a nano-alumina content of 9%.
NANOTECHNOLOGY REVIEWS
(2022)
Article
Construction & Building Technology
Han-Cheng Dan, Zelin Wang, Wei Cao, Jin Liu
Summary: This study investigated the effect of moisture damage on the fatigue behavior of a porous asphalt mixture (PAM), finding that moisture damage made PAM more susceptible to fatigue loading, with higher stress levels showing increased dependence on moisture damage. The results of this study were incorporated into predictive models for both loading patterns, mathematically describing the effects of moisture damage and loading level in uncoupled forms.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Xiyan Fan, Chaochao Liu, Songtao Lv, Dongdong Ge, Jing Liu, Qinxue Pan
Summary: This study investigated the fatigue behavior of asphalt mixtures using various testing methods, focusing on the effects of temperature and frequency, and established a connection between strength and fatigue. A new approach for determining stress ratio, analyzing and normalizing data, and simulating fatigue performance was introduced, leading to a more uniform characterization of fatigue performance under multi-field coupling conditions. Engineering application showed a significant reduction in pavement fatigue resistance design deviation.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Shenghan Zhuang, Jian Wang, Min Li, Changqing Yang, Jingchun Chen, Xiangquan Zhang, Zedong Zhao, Di Li, Jiaolong Ren
Summary: High-modulus asphalt mixtures (HMAM) have been widely used in high-temperature areas of China due to their advantages in rutting and fatigue resistance. However, the degradation of HMAM pavement performance is influenced by the combined action of moisture contents and temperatures. This study analyzed the moisture absorption characteristics of HMAM at different temperatures and investigated its rutting and fatigue performance under various moisture contents, temperatures, and stress levels.
Article
Construction & Building Technology
Liyan Shan, Hu Yang, Fuyuan Guo, Zhiwei Li
Summary: This paper proposes a method to obtain internal section images of asphalt mixtures in different fatigue damage stages using X-ray CT scanning technique and indirect tensile fatigue test. The study reveals that the difference in gradation type leads to different fatigue damage patterns and resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Juntao Lin, Yu Xia, Lin Huo, Jinxiang Hong, Xiaobin Zhu, Shaopeng Wu
Summary: This paper investigates the fatigue crack evolution and crack characteristics of cold recycled asphalt mixtures with asphalt emulsion (CRME) in different dimensional. The fatigue resistance of CRME is found to increase with the increase of curing time. The number of loading cycles when initial fatigue cracks appear on the surface of CRME during the fatigue test is recorded. The fatigue crack mainly propagates through the internal air void in CRME and the increase of air void content under fatigue loading reflects the fatigue damage to CRME. Moreover, the combination of cement hydration products and asphalt membrane formed by demulsification of emulsified asphalt improves the fatigue cracking resistance of CRME during the curing process.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Polymer Science
Chunfeng Zhu, Huijin Luo, Wei Tian, Binbin Teng, Yongmei Qian, Huaxue Ai, Bo Xiao
Summary: The fatigue resistance of asphalt mixture was improved by adding diatomite and basalt fiber, as shown by experiments and analysis. The cumulative dissipation energy was found to have the greatest impact on the fatigue life of the asphalt mixture.
Article
Construction & Building Technology
Ziyang Wang, Weiwei Lu, Kai Liu, Songtao Lv, Xinghai Peng, Shuo Yang, Sha Ding
Summary: In this research, two high-content RAP recycled asphalt mixtures (50% and 60% RAP-RAM) were prepared using Styreneic Methyl Copolymer (SMC) regenerant. The relationships between strength and temperature/loading rate were investigated through indirect tensile (IDT) strength and fatigue tests. A master curve model of indirect tensile strength and loading rate was established using linear and Sigmoidal functions. The fatigue equation based on the fatigue stress ratio took into account factors such as temperature and loading rate, providing a more realistic reflection of the mix's fatigue performance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Quanman Zhao, Xiaojin Lu, Shuo Jing, Xiangfa Yao, Min Sun, Litao Geng, Ruibo Ren, Li Wang, Jifa Liu, Ling Qiu
Summary: Through experiments, it was found that immersion, freeze-thaw, stress ratio, and loading frequency have significant effects on interlayer bonding performance, with loading frequency having the highest influence. Immersion mainly affects the number of voids, while freeze-thaw cycles mainly cause void size expansion. The interlayer shear fatigue life decreases with increasing stress ratio but increases with increasing loading frequency.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Songtao Lv, Ziyang Wang, Xuan Zhu, Jiang Yuan, Xinghai Peng
Summary: This paper investigates the strength and fatigue properties of asphalt mixture with four different gradation curves and establishes a unified fatigue equation. The research findings indicate that the asphalt mixture with Type D gradation curve shows the highest strength and the most extended fatigue life.
CONSTRUCTION AND BUILDING MATERIALS
(2023)