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Previous research has proved that paraffin has a negative effect on the mechanical properties of asphalt binder; however, until now there are very few studies on the fundamental mechanisms on a microscale. To study the effect of paraffin on the microproperties of asphalt binder, three molecular asphalt binder models with different paraffin contents and two molecular models of SBS-modified asphalt binders are created in this paper. The glass transition temperature is then simulated by means of a molecular dynamics (MD) simulation, indicating a significant reduction of low-temperature stability due to paraffin. Simulations of density, Young’s moduli, Poisson’s ratio, bulk moduli, and shear moduli are also conducted. The results show that paraffin can influence the mechanical properties substantially, and reduces the high-temperature stability of asphalt binders. Simulation results on the self-healing behavior of asphalt binder with varying paraffin contents demonstrate that paraffin significantly slows the self-healing behavior rate. Based on the molecular simulation results, it is suggested that the paraffin content in asphalt binder should be maintained at a controlled minimum amount.
Xin Qu; Dawei Wang; Yue Hou; Markus Oeser; Linbing Wang. Influence of Paraffin on the Microproperties of Asphalt Binder Using MD Simulation. Journal of Materials in Civil Engineering 2018, 30, 04018191 .
AMA StyleXin Qu, Dawei Wang, Yue Hou, Markus Oeser, Linbing Wang. Influence of Paraffin on the Microproperties of Asphalt Binder Using MD Simulation. Journal of Materials in Civil Engineering. 2018; 30 (8):04018191.
Chicago/Turabian StyleXin Qu; Dawei Wang; Yue Hou; Markus Oeser; Linbing Wang. 2018. "Influence of Paraffin on the Microproperties of Asphalt Binder Using MD Simulation." Journal of Materials in Civil Engineering 30, no. 8: 04018191.
The micro-texture of pavement layer aggregate has a direct influence on the skid resistance of pavement. In this paper, the 3D coordinate data of three kinds of aggregates surface is collected based on the surface profiler. Using the box counting method, the MATLAB program is compiled and the 3D fractal dimension of the rock surface is calculated. The results show that the method has good effect on describing the 3D microstructure of the aggregate surface. After that, the difference analysis of fractal dimension of three kinds of different aggregate is carried out. The significant level of microstructure difference between different aggregates is obtained. The results show that there is a significant difference between the surface microstructure of basalt and the other two aggregates. And, there is no significant difference between the surface microstructure of limestone and red sandstone aggregate.
Lingjian Meng; Yue Hou; Zhenyu Qian; Linbing Wang; Meng Guo. Application of 3D Fractal Dimension in Describing Surface Morphology of Aggregates. Transportation Research Congress 2016 2018, 1 .
AMA StyleLingjian Meng, Yue Hou, Zhenyu Qian, Linbing Wang, Meng Guo. Application of 3D Fractal Dimension in Describing Surface Morphology of Aggregates. Transportation Research Congress 2016. 2018; ():1.
Chicago/Turabian StyleLingjian Meng; Yue Hou; Zhenyu Qian; Linbing Wang; Meng Guo. 2018. "Application of 3D Fractal Dimension in Describing Surface Morphology of Aggregates." Transportation Research Congress 2016 , no. : 1.
The intelligent transportation system (ITS) in traffic and transportation engineering is becoming more and more popular among pavement engineers. In order to solve the road related problems, find the optimal approach, an integration of multi-disciplinary research and technology on the ITS was introduced in this paper. The current ITS function, further application, and development were also introduced. The key technologies and difficulties in ITS were analyzed.
Shanglin Song; Linbing Wang; Meng Guo; Yue Hou; Zhoujing Ye; Qian Zhao. Research on Pavement Materials and Innovations in Intelligent Transportation Systems. Transportation Research Congress 2016 2018, 1 .
AMA StyleShanglin Song, Linbing Wang, Meng Guo, Yue Hou, Zhoujing Ye, Qian Zhao. Research on Pavement Materials and Innovations in Intelligent Transportation Systems. Transportation Research Congress 2016. 2018; ():1.
Chicago/Turabian StyleShanglin Song; Linbing Wang; Meng Guo; Yue Hou; Zhoujing Ye; Qian Zhao. 2018. "Research on Pavement Materials and Innovations in Intelligent Transportation Systems." Transportation Research Congress 2016 , no. : 1.
With the improvement of computer-communication technology, wireless sensors and network are used in the intelligent monitoring system of road transportation because of its small size, high integration, low maintenance cost, and less installation time. However, the wireless sensor is very easy to fail due to the high exhaustion of power and the disconnection of network. To solve these problems, a self-powered intelligent monitoring system of road transportation with low power consumption is designed and introduced in the paper. The innovative new system can significantly reduce the node communication and energy consumption of data processing; piezoelectric energy and solar energy are used for sensing node and gateway node, respectively. The real-time data collection, processing, analyzing real-time display of monitoring data at mobile terminal, user and project management can be obtained based on this innovative new system.
Linbing Wang; Zhoujing Ye; Yue Hou; Hailu Yang; Xinlong Tong. Self-Powered Intelligent Monitoring System for Transportation Infrastructures. Transportation Research Congress 2016 2018, 1 .
AMA StyleLinbing Wang, Zhoujing Ye, Yue Hou, Hailu Yang, Xinlong Tong. Self-Powered Intelligent Monitoring System for Transportation Infrastructures. Transportation Research Congress 2016. 2018; ():1.
Chicago/Turabian StyleLinbing Wang; Zhoujing Ye; Yue Hou; Hailu Yang; Xinlong Tong. 2018. "Self-Powered Intelligent Monitoring System for Transportation Infrastructures." Transportation Research Congress 2016 , no. : 1.
With the rapid development of bridges, the traditional sensing technology is difficult to meet the needs of diversified tests. To overcome the limitations and further develop the health monitoring system of bridges, a new network concept, namely, Internet of things (IOT), which exchanges information and creates the interconnection and communication between bridge and the monitoring system, is presented in this paper. The system is designed to achieve real-time monitoring of bridge cluster health status. This system introduces the wireless acceleration transducer by wireless gateway and cloud platform to monitor the bridge health status, which can real-time monitor the bridge cluster health status, process the real-time data, and help bridge maintenance.
Xinlong Tong; Zhoujing Ye; Yinan Liu; Hailu Yang; Yue Hou; Linbing Wang. The Health Monitoring System Design for Bridge Based on Internet of Things. Transportation Research Congress 2016 2018, 1 .
AMA StyleXinlong Tong, Zhoujing Ye, Yinan Liu, Hailu Yang, Yue Hou, Linbing Wang. The Health Monitoring System Design for Bridge Based on Internet of Things. Transportation Research Congress 2016. 2018; ():1.
Chicago/Turabian StyleXinlong Tong; Zhoujing Ye; Yinan Liu; Hailu Yang; Yue Hou; Linbing Wang. 2018. "The Health Monitoring System Design for Bridge Based on Internet of Things." Transportation Research Congress 2016 , no. : 1.
Hydrated cement concrete is one of the most commonly used materials in civil engineering. Hydrated cement concrete is heterogeneous, consisting of aggregates, sands, hydrated cement paste, and chemical additives, etc. The compositions have different spatial size, ranging from centimeter to micrometer. Mechanical failures of hydrated cement concrete originate from atomic-bond breakage into micro-voids and micro-cracks and then propagate to macro-cracks. To better understand fundamental mechanism of mechanical failures, there have been a lot of laboratory experiments and numerical simulations. However, the wide spatial variations in hydrated cement concrete make mechanical analysis using simulation techniques at multiple scales very challenging. This study reviews available methods of multiscale mechanical modeling for hydrated cement concrete. In addition, problems in this field are discussed, and suggestions are made at the end to better apply multiscale mechanical modeling methods to improving field performances of hydrated cement concrete.
Wenjuan Sun; Yue Hou; Linbing Wang. The State-of-the-Art of Multiscale Mechanical Modeling Methods for Hydrated Cement Concrete. Transportation Research Congress 2016 2018, 1 .
AMA StyleWenjuan Sun, Yue Hou, Linbing Wang. The State-of-the-Art of Multiscale Mechanical Modeling Methods for Hydrated Cement Concrete. Transportation Research Congress 2016. 2018; ():1.
Chicago/Turabian StyleWenjuan Sun; Yue Hou; Linbing Wang. 2018. "The State-of-the-Art of Multiscale Mechanical Modeling Methods for Hydrated Cement Concrete." Transportation Research Congress 2016 , no. : 1.
The thermodynamic behavior of asphalt mixtures is critical to the engineers since it directly relates to the damage in asphalt mixtures. However, most of the current research of the freeze-thaw damage of asphalt mixtures is focused on the bulk body from the macroscale and lacks a fundamental understanding of the thermodynamic behaviors of asphalt mixtures from the microscale perspective. In this paper, to identify the important thermodynamic behaviors of asphalt mixtures under freeze-thaw loading cycle, the information entropy theory, an X-ray computerized tomography (CT) scanner and digital image processing technology are employed. The voids, the average size of the voids, the connected porosity, and the void number are extracted according to the scanned images. Based on the experiments and the CT scanned images, the information entropy evolution of the asphalt mixtures under different freeze-thaw cycles is calculated and the relationship between the change of information entropy and the pore structure characteristics is established. Then, the influences of different freezing and thawing conditions on the thermodynamic behaviors of asphalt mixtures are compared. The combination of information entropy theory and CT scanning technique proposed in this paper provides an innovative approach to investigate the thermodynamics behaviors of asphalt mixtures and a new way to analyze the freeze-thaw damage in asphalt mixtures.
Huining Xu; Hengzhen Li; Yiqiu Tan; Linbing Wang; Yue Hou. A Micro-Scale Investigation on the Behaviors of Asphalt Mixtures under Freeze-Thaw Cycles Using Entropy Theory and a Computerized Tomography Scanning Technique. Entropy 2018, 20, 68 .
AMA StyleHuining Xu, Hengzhen Li, Yiqiu Tan, Linbing Wang, Yue Hou. A Micro-Scale Investigation on the Behaviors of Asphalt Mixtures under Freeze-Thaw Cycles Using Entropy Theory and a Computerized Tomography Scanning Technique. Entropy. 2018; 20 (2):68.
Chicago/Turabian StyleHuining Xu; Hengzhen Li; Yiqiu Tan; Linbing Wang; Yue Hou. 2018. "A Micro-Scale Investigation on the Behaviors of Asphalt Mixtures under Freeze-Thaw Cycles Using Entropy Theory and a Computerized Tomography Scanning Technique." Entropy 20, no. 2: 68.
Piezoelectric energy harvesting in pavement is an advanced energy saving technology. It is carried out by laying the piezoelectric material in the pavement structure and converting the mechanical energy into electrical energy. The current energy harvester has difficulty meeting the complex requirements of pavements. In order to develop the pavement piezoelectric energy harvesting technology, in this paper, a stacked mode for a piezoelectric energy harvester is designed. The computer-controlled pressure testing machine (WHY-2000, Shanghai Hualong Test Instruments Corporation, Shanghai, China) was used to test the compressive property and the one–third-scaled accelerated instrument Model Mobile Load Simulator (MMLS-1/3) was used to test the fatigue properties of the piezoelectric transducer. Results showed that the designed piezoelectric transducer could bear loadings up to 150 kN, which can meet road traffic loading requirements. The piezoelectric properties of the transducer remain good after 100,000 cyclic loadings. The indoor laboratory test and the on-site test show that the piezoelectric transducer can work in real pavement in actual traffic conditions. The open circuit voltage can reach 280 V, which can provide enough electricity for sensing systems in the pavements. In all, the proposed new piezoelectric transducer provides a promising future for green energy use in the pavement industry.
Hailu Yang; Linbing Wang; Yue Hou; Meng Guo; Zhoujing Ye; Xinlong Tong; Dawei Wang. Development in Stacked-Array-Type Piezoelectric Energy Harvester in Asphalt Pavement. Journal of Materials in Civil Engineering 2017, 29, 04017224 .
AMA StyleHailu Yang, Linbing Wang, Yue Hou, Meng Guo, Zhoujing Ye, Xinlong Tong, Dawei Wang. Development in Stacked-Array-Type Piezoelectric Energy Harvester in Asphalt Pavement. Journal of Materials in Civil Engineering. 2017; 29 (11):04017224.
Chicago/Turabian StyleHailu Yang; Linbing Wang; Yue Hou; Meng Guo; Zhoujing Ye; Xinlong Tong; Dawei Wang. 2017. "Development in Stacked-Array-Type Piezoelectric Energy Harvester in Asphalt Pavement." Journal of Materials in Civil Engineering 29, no. 11: 04017224.
The accumulated irreversible deformation in pavement under repeated vehicle loadings will cause fatigue failure of asphalt concrete. It is necessary to monitor the mechanical response of pavement under load by using sensors. Previous studies have limitations in modulus accommodation between the sensor and asphalt pavement, and it is difficult to achieve the distributed monitoring goal. To solve these problems, a new type of low modulus distributed optical fiber sensor (DOFS) for asphalt pavement strain monitoring is fabricated. Laboratory experiments have proved the applicability and accuracy of the newly-designed sensor. This paper presents the results of the development.
Lingjian Meng; Linbing Wang; Yue Hou; Guannan Yan. A Research on Low Modulus Distributed Fiber Optical Sensor for Pavement Material Strain Monitoring. Sensors 2017, 17, 2386 .
AMA StyleLingjian Meng, Linbing Wang, Yue Hou, Guannan Yan. A Research on Low Modulus Distributed Fiber Optical Sensor for Pavement Material Strain Monitoring. Sensors. 2017; 17 (10):2386.
Chicago/Turabian StyleLingjian Meng; Linbing Wang; Yue Hou; Guannan Yan. 2017. "A Research on Low Modulus Distributed Fiber Optical Sensor for Pavement Material Strain Monitoring." Sensors 17, no. 10: 2386.
The interface between asphalt binder and mineral aggregate directly affects the service life of pavement because the defects and stress concentration occur more easily there. The interaction between asphalt binder and mineral aggregate is the main cause of forming the interface. This paper presents an extensive review on the test technologies and analysis methods of interfacial interaction, including molecular dynamics simulation, phase field approach, absorption tests, rheological methods and macro mechanical tests. All of the studies conducted on this topic clearly indicated that the interfacial interaction between asphalt binder and mineral aggregate is a physical-chemical process, and can be qualitatively characterized by microscopical technique (such as SEM and AFM), and also can be quantitatively evaluated by rheological methods and interfacial mechanical tests. Molecular dynamics simulation and phase field approach were also demonstrated to be effective methods to study the interfacial behavior and its mechanism.
Meng Guo; Yiqiu Tan; Linbing Wang; Yue Hou. A state-of-the-art review on interfacial behavior between asphalt binder and mineral aggregate. Frontiers of Structural and Civil Engineering 2017, 12, 248 -259.
AMA StyleMeng Guo, Yiqiu Tan, Linbing Wang, Yue Hou. A state-of-the-art review on interfacial behavior between asphalt binder and mineral aggregate. Frontiers of Structural and Civil Engineering. 2017; 12 (2):248-259.
Chicago/Turabian StyleMeng Guo; Yiqiu Tan; Linbing Wang; Yue Hou. 2017. "A state-of-the-art review on interfacial behavior between asphalt binder and mineral aggregate." Frontiers of Structural and Civil Engineering 12, no. 2: 248-259.
Recent research shows that macro-scale cracking in asphalt binder may originate from its intrinsic defects at the nano-scale. In this paper, a molecular dynamics (MD) simulation was conducted to evaluate the nucleation of natural defects in asphalt. The asphalt microstructure was modeled using an ensemble of three different types of molecules to represent a constituent species: asphaltenes, naphthene aromatics and saturates, where the weight proportion of 20:60:20 was used to create an asphalt-like ensemble of molecules. Tension force was then applied on the molecular boundaries to study the crack initiation and propagation. It was discovered that the natural distribution of atoms at microscale would affect the intrinsic defects in asphalt and further influence crack initiation and propagation in asphalt.
Yue Hou; Linbing Wang; Dawei Wang; Xin Qu; Jiangfeng Wu. Using a Molecular Dynamics Simulation to Investigate Asphalt Nano-Cracking under External Loading Conditions. Applied Sciences 2017, 7, 770 .
AMA StyleYue Hou, Linbing Wang, Dawei Wang, Xin Qu, Jiangfeng Wu. Using a Molecular Dynamics Simulation to Investigate Asphalt Nano-Cracking under External Loading Conditions. Applied Sciences. 2017; 7 (8):770.
Chicago/Turabian StyleYue Hou; Linbing Wang; Dawei Wang; Xin Qu; Jiangfeng Wu. 2017. "Using a Molecular Dynamics Simulation to Investigate Asphalt Nano-Cracking under External Loading Conditions." Applied Sciences 7, no. 8: 770.
There have been many studies on mortar single-mode cracking behavior under tensile loading, however, the mixed-mode cracking is still not fully understood. In this paper, the mortar Mixed-Mode I–II cracking behavior is investigated by decomposing the total fracture energy into Mode I component and Mode II component. The total fracture energy is then put into the modified nonconserved Allen–Cahn equation to simulate the cracking process. Two types of cracking experiments, namely, internal inclined cracking test and single-edge cracking test, are conducted to verify the simulation results. It is discovered that the phase-field method simulation could satisfactorily capture the Mixed-Mode I–II cracking behavior of mortar.
Yue Hou; Meng Guo; Zhi Ge; Wenjuan Sun; Linbing Wang. Mixed-Mode I–II Cracking Characterization of Mortar Using Phase-Field Method. Journal of Engineering Mechanics 2017, 143, 04017033 .
AMA StyleYue Hou, Meng Guo, Zhi Ge, Wenjuan Sun, Linbing Wang. Mixed-Mode I–II Cracking Characterization of Mortar Using Phase-Field Method. Journal of Engineering Mechanics. 2017; 143 (7):04017033.
Chicago/Turabian StyleYue Hou; Meng Guo; Zhi Ge; Wenjuan Sun; Linbing Wang. 2017. "Mixed-Mode I–II Cracking Characterization of Mortar Using Phase-Field Method." Journal of Engineering Mechanics 143, no. 7: 04017033.
The interfacial behavior between asphalt binder and mineral fillers directly effects the performance of asphalt mastics or asphalt mixture. However, the understanding about the interfacial interaction between these components is very limited, although the role of individual ingredients on its performance is readily recognized. In order to study the interactions between asphalt binder and mineral fillers, it is necessary to propose an effective evaluation indicator. In this research, dynamic mechanical analysis (DMA) was used to obtain the viscoelastic parameters of different asphalt binder and asphalt mastics. The interfacial interaction parameters between asphalt binder and fillers were calculated based on the viscoelastic parameters and relevant theoretical models. The interaction parameters were compared and the calculated methods were improved. The results show that compared to interfacial interaction parameters Luis Ibrarra-A and K. Ziegel-B, C value based on Palierne theoretical model had the least sensitivity to the volume fraction of fillers. The checking of fitting goodness of improved interaction parameter C value shows a high determination coefficient. It demonstrates that the C value can effectively evaluate the interfacial interaction. The interfacial interaction becomes stronger with the temperature increasing. The higher the specific surface area of filler, he stronger the interfacial interaction between it and asphalt binder.
Meng Guo; Yiqiu Tan; Yue Hou; Linbing Wang; Yiqi Wang. Improvement of evaluation indicator of interfacial interaction between asphalt binder and mineral fillers. Construction and Building Materials 2017, 151, 236 -245.
AMA StyleMeng Guo, Yiqiu Tan, Yue Hou, Linbing Wang, Yiqi Wang. Improvement of evaluation indicator of interfacial interaction between asphalt binder and mineral fillers. Construction and Building Materials. 2017; 151 ():236-245.
Chicago/Turabian StyleMeng Guo; Yiqiu Tan; Yue Hou; Linbing Wang; Yiqi Wang. 2017. "Improvement of evaluation indicator of interfacial interaction between asphalt binder and mineral fillers." Construction and Building Materials 151, no. : 236-245.
In this paper, a combined DEM-MD method is proposed to simulate the crack failure process of Hydrated Cement Paste (HCP) under a tensile force. A three-dimensional (3D) multiscale mechanical model is established using the combined Discrete Element Method (DEM)-Molecular Dynamics (MD) method in LAMMPS (Large-scale Atomic/Molecular Massively Parallel Simulator). In the 3D model, HCP consists of discrete particles and atoms. Simulation results show that the combined DEM-MD model is computationally efficient with good accuracy in predicting tensile failures of HCP.
Yue Hou; Linbing Wang. Multiscale mechanical modeling of hydrated cement paste under tensile load using the combined DEM-MD method. Frontiers of Structural and Civil Engineering 2017, 11, 270 -278.
AMA StyleYue Hou, Linbing Wang. Multiscale mechanical modeling of hydrated cement paste under tensile load using the combined DEM-MD method. Frontiers of Structural and Civil Engineering. 2017; 11 (3):270-278.
Chicago/Turabian StyleYue Hou; Linbing Wang. 2017. "Multiscale mechanical modeling of hydrated cement paste under tensile load using the combined DEM-MD method." Frontiers of Structural and Civil Engineering 11, no. 3: 270-278.
In this research, the models of four asphalt components (asphaltene, resin, aromatics and saturate) and five minerals (SiO2, Al2O3, CaO, MgO and Fe2O3) were constructed individually, and then the interface models were constructed by adding the asphalt components and minerals together. The interfacial behaviour at molecular scale was simulated by setting boundary conditions, optimising the structure and canonical ensemble. The mean square displacement and diffusion coefficient of particles were selected to study the diffusion of asphalt components on the surface of different minerals. The results show that increasing the temperature can accelerate the diffusion of asphalt components. The diffusion speed of asphalt components on the surface of Al2O3 is faster than other mineral crystals. The temperature sensitivity of diffusion coefficient of asphalt components on the surface of CaO is the maximum. The diffusion speed of asphalt components ranked roughly as their molecular weight: saturate > aromatics > resin > asphaltene.
Meng Guo; Yiqiu Tan; Linbing Wang; Yue Hou. Diffusion of asphaltene, resin, aromatic and saturate components of asphalt on mineral aggregates surface: molecular dynamics simulation. Road Materials and Pavement Design 2017, 18, 1 -10.
AMA StyleMeng Guo, Yiqiu Tan, Linbing Wang, Yue Hou. Diffusion of asphaltene, resin, aromatic and saturate components of asphalt on mineral aggregates surface: molecular dynamics simulation. Road Materials and Pavement Design. 2017; 18 (sup3):1-10.
Chicago/Turabian StyleMeng Guo; Yiqiu Tan; Linbing Wang; Yue Hou. 2017. "Diffusion of asphaltene, resin, aromatic and saturate components of asphalt on mineral aggregates surface: molecular dynamics simulation." Road Materials and Pavement Design 18, no. sup3: 1-10.
Yue Hou; Wenjuan Sun; Linbing Wang; Yucheng Huang; Meng Guo. A multi-scale approach of Mode I Crack in ettringite. Road Materials and Pavement Design 2017, 18, 33 -42.
AMA StyleYue Hou, Wenjuan Sun, Linbing Wang, Yucheng Huang, Meng Guo. A multi-scale approach of Mode I Crack in ettringite. Road Materials and Pavement Design. 2017; 18 (sup3):33-42.
Chicago/Turabian StyleYue Hou; Wenjuan Sun; Linbing Wang; Yucheng Huang; Meng Guo. 2017. "A multi-scale approach of Mode I Crack in ettringite." Road Materials and Pavement Design 18, no. sup3: 33-42.
The property of asphalt mastic directly affects the service performance of asphalt mixtures and pavements. Previous studies have demonstrated that the interaction between asphalt binder and mineral fillers has a significant effect on the performance of asphalt mastics. However, the interaction hasn’t been characterized by direct tests. In this study, an adsorption–separation test of asphalt binder on surface of mineral fillers was conducted to separate the structure asphalt binder and free asphalt binder. Atomic force microscope (AFM) PeakForce QNM mode was used to characterize the morphology and mechanical property of asphalt binder at different distances to filler surface. Results show that the effected thickness of binder–filler interaction was around 1 μm. Within this specific thickness, the “bee” structure of asphalt surface disappears gradually, and the modulus increases significantly when the tested samples are closer to the aggregate surface.
Meng Guo; Yiqiu Tan; Jianxin Yu; Yue Hou; Linbing Wang. A direct characterization of interfacial interaction between asphalt binder and mineral fillers by atomic force microscopy. Materials and Structures 2017, 50, 141 .
AMA StyleMeng Guo, Yiqiu Tan, Jianxin Yu, Yue Hou, Linbing Wang. A direct characterization of interfacial interaction between asphalt binder and mineral fillers by atomic force microscopy. Materials and Structures. 2017; 50 (2):141.
Chicago/Turabian StyleMeng Guo; Yiqiu Tan; Jianxin Yu; Yue Hou; Linbing Wang. 2017. "A direct characterization of interfacial interaction between asphalt binder and mineral fillers by atomic force microscopy." Materials and Structures 50, no. 2: 141.
The evolution of asphalt microstructures under thermal loading has always been a critical issue for pavement engineers. Previous researches show that phase separation will greatly affect the mechanical performance of asphalt at microscale. To analyze this important phenomenon, the conserved phase-field model is coupled with the Navier–Stokes equation to simulate the phase kinetics in this paper. The asphalt is chemically simplified to a quaternary system consisting of four chemical components: asphaltene, resin, oil, and wax. The coupled Navier–Stokes phase-field system is solved in a unified finite element framework in COMSOL software. It is observed that phase separation has a significant influence on the thermal stress distribution. Moreover, stress concentration is observed at the interfaces between different phases, which may result in microcracks. This conclusion is validated by atomic-force microscopy (AFM) experiment results.
Yue Hou; Wenjuan Sun; Prabir Das; Xiuguang Song; Linbing Wang; Zhi Ge; Yucheng Huang. Coupled Navier–Stokes Phase-Field Model to Evaluate the Microscopic Phase Separation in Asphalt Binder under Thermal Loading. Journal of Materials in Civil Engineering 2016, 28, 04016100 .
AMA StyleYue Hou, Wenjuan Sun, Prabir Das, Xiuguang Song, Linbing Wang, Zhi Ge, Yucheng Huang. Coupled Navier–Stokes Phase-Field Model to Evaluate the Microscopic Phase Separation in Asphalt Binder under Thermal Loading. Journal of Materials in Civil Engineering. 2016; 28 (10):04016100.
Chicago/Turabian StyleYue Hou; Wenjuan Sun; Prabir Das; Xiuguang Song; Linbing Wang; Zhi Ge; Yucheng Huang. 2016. "Coupled Navier–Stokes Phase-Field Model to Evaluate the Microscopic Phase Separation in Asphalt Binder under Thermal Loading." Journal of Materials in Civil Engineering 28, no. 10: 04016100.
Fundamental understandings on the bitumen fracture mechanism are vital to improve the mixture design of asphalt concrete. In this paper, a diffuse interface model, namely, phase-field method is used for modeling the quasi-brittle fracture in bitumen. This method describes the microstructure using a phase-field variable which assumes one in the intact solid and negative one in the crack region. Only the elastic energy will directly contribute to cracking. To account for the growth of cracks, a nonconserved Allen-Cahn equation is adopted to evolve the phase-field variable. Numerical simulations of fracture are performed in bituminous materials with the consideration of quasi-brittle properties. It is found that the simulation results agree well with classic fracture mechanics.
Yue Hou; Fengyan Sun; Wenjuan Sun; Meng Guo; Chao Xing; Jiangfeng Wu. Quasi-Brittle Fracture Modeling of Preflawed Bitumen Using a Diffuse Interface Model. Advances in Materials Science and Engineering 2016, 2016, 1 -7.
AMA StyleYue Hou, Fengyan Sun, Wenjuan Sun, Meng Guo, Chao Xing, Jiangfeng Wu. Quasi-Brittle Fracture Modeling of Preflawed Bitumen Using a Diffuse Interface Model. Advances in Materials Science and Engineering. 2016; 2016 ():1-7.
Chicago/Turabian StyleYue Hou; Fengyan Sun; Wenjuan Sun; Meng Guo; Chao Xing; Jiangfeng Wu. 2016. "Quasi-Brittle Fracture Modeling of Preflawed Bitumen Using a Diffuse Interface Model." Advances in Materials Science and Engineering 2016, no. : 1-7.
Yue Hou; Linbing Wang; Pengtao Yue; Troy Pauli; Wenjuan Sun. Modeling Mode I Cracking Failure in Asphalt Binder by Using Nonconserved Phase-Field Model. Journal of Materials in Civil Engineering 2014, 26, 684 -691.
AMA StyleYue Hou, Linbing Wang, Pengtao Yue, Troy Pauli, Wenjuan Sun. Modeling Mode I Cracking Failure in Asphalt Binder by Using Nonconserved Phase-Field Model. Journal of Materials in Civil Engineering. 2014; 26 (4):684-691.
Chicago/Turabian StyleYue Hou; Linbing Wang; Pengtao Yue; Troy Pauli; Wenjuan Sun. 2014. "Modeling Mode I Cracking Failure in Asphalt Binder by Using Nonconserved Phase-Field Model." Journal of Materials in Civil Engineering 26, no. 4: 684-691.