1. Comparative study of carbonized peach shell and carbonized apricot shell to improve the performance of lightweight concrete
Accession number:20183605766049
Authors:Wu, Fan (1, 2); Liu, Changwu (3, 4); Zhang, Lianwei (3, 4); Lu, Yonghu (3, 4); Ma, Yuanjun (3, 4)
Author affiliation:(1) Institute of Disaster Management and Reconstruction, Sichuan University-The Hong Kong Polytechnic University, No. 1 Huanghe Road, Chengdu; 610065, Hong Kong; (2) Key Laboratory of Geological Hazards Mitigation for Mountainous Highway and Waterway, Chongqing Municipal Education Commission, Chongqing Jiaotong University, No. 66 Xuefu Avenue, Nan’an District, Chongqing; 400074, China; (3) College of Water Resource and Hydropower, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu; 610065, China; (4) State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu; 610065, China
Corresponding author:Liu, Changwu(liuchangwu@scu.edu.cn)
Source title:Construction and Building Materials
Abbreviated source title:Constr Build Mater
Volume:188
Issue date:10 November 2018
Publication year:2018
Pages:758-771
Language:English
ISSN:09500618
CODEN:CBUMEZ
Document type:Journal article (JA)
Publisher:Elsevier Ltd
Abstract:To improve the performance of peach shell concrete (PSC) and apricot shell concrete (ASC), the effect of carbonized peach shell (CPS) and carbonized apricot shell (CAS) instead of peach shell (PS) and apricot shell (AS), respectively, on physical, mechanical and triaxial creep properties of lightweight aggregate concrete (LWAC) was investigated. Results showed that the replacement of raw aggregates (PS and AS) with carbonized aggregates (CPS and CAS) reduced the density, water absorption and open porosity, and increased the efficiency factor, total porosity of LWAC. Moreover, the mechanical properties were significantly enhanced, and the CAS mixture obtained the highest compressive strength, splitting tensile strength, flexural strength and modulus of elasticity, which were 38.8 MPa, 3.54 MPa, 5.49 MPa, and 15.1 GPa, respectively, an increase of 44.2%, 55.3%, 54.6%, and 42.5%, respectively, compared to the AS mixture. Triaxial creep results showed that under coupled water pressure and axial pressure condition, the use of carbonized aggregates instead of raw aggregates significantly decreased creep strain of LWAC and the concentrations of K+, Ca2+, Na+, Mg2+ and Sr2+ in the leaching solution. Therefore, use of CPS and CAS as lightweight aggregate in concrete can significantly improve the performance of LWAC. © 2018 Elsevier Ltd
Number of references:69
Main heading:Mechanical properties
Controlled terms:Aggregates - Compressive strength - Creep - Fruits - Light weight concrete - Mixtures - Porosity - Shells (structures) - Tensile strength - Water absorption
Uncontrolled terms:Apricot shell - Comparative studies - Efficiency factor - Light weight aggregate - Light-weight aggregate concrete - Lightweight aggregate concrete(LWAC) - Peach shell - Splitting tensile strength
Classification code:406 Highway Engineering
Highway Engineering
- 408.2 Structural Members and Shapes
Structural Members and Shapes
- 802.3 Chemical Operations
Chemical Operations
- 821.4 Agricultural Products
Agricultural Products
- 931.2 Physical Properties of Gases, Liquids and Solids
Physical Properties of Gases, Liquids and Solids
- 951 Materials Science
Materials Science
Numerical data indexing:Percentage 4.25e+01%, Percentage 4.42e+01%, Percentage 5.46e+01%, Percentage 5.53e+01%, Pressure 1.51e+10Pa, Pressure 3.54e+06Pa, Pressure 3.88e+07Pa, Pressure 5.49e+06Pa
DOI:10.1016/j.conbuildmat.2018.08.094
Funding Details: Number; Acronym; Sponsor:201806240037; CSC; China Scholarship Council - Number; Acronym; Sponsor:2018YJSY091; SCU; Sichuan University
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
2. Iterative learning scheme-based fault estimation design for nonlinear systems with varying trial lengths and specified constraints
Accession number:20183605778417
Authors:Feng, Li (1, 3); Xu, Shuiqing (2, 3); Chai, Yi (3); Zhang, Ke (3)
Author affiliation:(1) College of Traffic and Transportation, Chongqing Jiaotong University, Chongqing, China; (2) College of Electrical and Automation Engineering, Hefei University of Technology, Hefei, China; (3) College of Automation, Chongqing University, Chongqing, China
Corresponding author:Xu, Shuiqing(xsqanhui91@gmail.com)
Source title:International Journal of Robust and Nonlinear Control
Abbreviated source title:Int J Robust Nonlinear Control
Issue date:2018
Publication year:2018
Language:English
ISSN:10498923
E-ISSN:10991239
CODEN:IJRCEA
Document type:Article in Press
Publisher:John Wiley and Sons Ltd, Southern Gate, Chichester, West Sussex, PO19 8SQ, United Kingdom
Abstract:This technical note deals with a fault estimation (FE) problem for nonlinear systems with varying trial lengths subjected to specified constraints. An iterative learning observer is developed to achieve FE and state reconstruction simultaneously, which thus to consider the state error and fault estimating information from previous iteration to improve the FE performance in the current iteration. Compared with conventional observer-based FE methods, the proposed method only requires the bounds of parameter matrices rather than the precise model of the system. To deal with the missing and redundancy problems caused by varying trial lengths, a truncation operator is presented to design the FE law. Different from existing iterative learning methods, the presented method aims at the nonlinear systems with specified constraints, such as filling systems. Furthermore, the λ-norm method and mathematical induction are employed to obtain the solutions of iterative learning matrices and observer gain matrix. Finally, illustrative examples are introduced to demonstrate the validity and the effectiveness of the proposed FE approach. © 2018 John Wiley & Sons, Ltd.
Number of references:31
Main heading:Iterative methods
Controlled terms:Estimation - Nonlinear analysis - Nonlinear systems
Uncontrolled terms:Fault estimation - Iterative learning - Iterative learning observers - Mathematical induction - Observer gain matrix - State reconstruction - Truncation operators - varying trial lengths
Classification code:921 Mathematics
Mathematics
- 921.6 Numerical Methods
Numerical Methods
- 961 Systems Science
Systems Science
DOI:10.1002/rnc.4287
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
3. Field measurement analysis of wind turbulence characteristics at bridge site of Qingcaobei Yangtze River
Accession number:20183605767167
Title of translation:
Authors:Guo, Zengwei (1); Yuan, Hang (1); Wang, Xiaosong (1)
Author affiliation:(1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Source title:Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition)
Abbreviated source title:Huazhong Ligong Daxue Xuebao
Volume:46
Issue:5
Issue date:May 23, 2018
Publication year:2018
Pages:121-126
Language:Chinese
ISSN:16714512
Document type:Journal article (JA)
Publisher:Huazhong University of Science and Technology
Abstract:To obtain the wind turbulence characteristics in mountainous area, wind field at Qingcaobei Bridge site was monitored by high-frequency anemometer during eight months.The wind speed, wind direction, turbulence intensity, gust factor and power spectra were analyzed based on these field measured data.Subsequently, the variation of gust factor with turbulence intensity and the relationship between gust factor and time interval in mountainous areas were investigated.Research results show that the mean wind speed and its direction in mountainous area show obvious periodic variation characteristics, which may be reduced by the local thermal circulation.The turbulence intensity of longitudinal and vertical fluctuation components in mountainous area is higher than the recommended value at high wind speed, but the horizontal direction is opposite.The variation of gust factor with the time interval in mountain area can be described by the logarithmic Gauss function.The turbulence energies at high frequencies are higher than the recommended value while lower at low frequencies, which is contributed by the fully developed turbulence caused by great topographic relief in mountain area. © 2018, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
Number of references:16
Main heading:Turbulence
Controlled terms:Power spectrum - Wind
Uncontrolled terms:Field measurement - Gust factors - High frequency HF - Periodic variation - Recommended values - Turbulence energy - Turbulence intensity - Vertical fluctuations
Classification code:443.1 Atmospheric Properties
Atmospheric Properties
DOI:10.13245/j.hust.180522
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
4. Research on Macro-fracture Healing Performance of Asphalt Mixture Based on SCB Test
Accession number:20183605777621
Title of translation:SCB
Authors:Zhu, Hongzhou (1, 2); Fan, Shiping (2); Li, Zhenghao (2)
Author affiliation:(1) National & Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing; 400074, China; (2) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Source title:Jianzhu Cailiao Xuebao/Journal of Building Materials
Abbreviated source title:Jianzhu Cailiao Xuebao
Volume:21
Issue:3
Issue date:June 1, 2018
Publication year:2018
Pages:426-432
Language:Chinese
ISSN:10079629
Document type:Journal article (JA)
Publisher:Tongji University
Abstract:To research the self-healing performance of asphalt mixture macro-fracture, the semi-circular bending(SCB) test conducted using the 70# base asphalt mixture and SBS modified asphalt mixture for fracture-healing-fracture test. The tensile strength ratio before and after healing is defined as healing index(HI), the effect of healing time, healing temperature and pressure for self-healing performance was investigated. The results indicate that macro-fracture occurs after healing of the asphalt mixture in a certain environment, the strength recovery rate is equal to 45%; raising the temperature, prolonging the time and putting pressure have a certain promoting effect on the macroscopic visible cracks healing of the asphalt mixture, but it’s not true that the higher the temperature and the longer the time, the better the self-healing performance. The optimum healing temperature is related to the asphalt softening point and the type of asphalt mixture. When the healing temperature is less than or equal to 60, putting pressure has a positive effect on the crack healing of the asphalt mixture, the HI value obtained with the confining pressure specimen is up to 4.5 times of that without confining pressure specimen, and the HI value of SBS modified asphalt mixture is 4 times that of 70# base asphalt mixture; when the temperature is more than 60, application of pressure does not show significant improvement of the self-healing performance, and the difference in the type of asphalt mixture is also not notable. © 2018, Editorial Department of Journal of Building Materials. All right reserved.
Number of references:18
Main heading:Asphalt mixtures
Controlled terms:Cracks - Fracture testing - Mixtures - Pressure effects - Rock pressure - Tensile strength
Uncontrolled terms:Confining pressures - Healing temperature - Macro fractures - Road engineering - SBS-modified asphalt - Self-healing - Semi-circular bending - Tensile strength ratios
Classification code:411.1 Asphalt
Asphalt
- 502.1 Mine and Quarry Operations
Mine and Quarry Operations
- 931.1 Mechanics
Mechanics
DOI:10.3969/j.issn.1007-9629.2018.03.013
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
5. Application of unmanned aerial vehicle oblique photography in 3D modeling of crag
Accession number:20183605779180
Authors:Tang, Feifei (1, 3); Ruan, Zhimin (2); Li, Li (4)
Author affiliation:(1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400067, China; (2) China Merchants Chongqing Communications Technology Research and Designing Institute CO. LTD., Chongqing; 400067, China; (3) Chongqing Institute of Geology and Mineral resources, Chongqing; 400042, China; (4) Chongqing Land Resources and Housing Survey Planning Institute, Chongqing; 400020, China
Source title:Proceedings of SPIE - The International Society for Optical Engineering
Abbreviated source title:Proc SPIE Int Soc Opt Eng
Volume:10806
Part number:1 of 1
Issue title:Tenth International Conference on Digital Image Processing, ICDIP 2018
Issue date:2018
Publication year:2018
Article number:108063D
Language:English
ISSN:0277786X
E-ISSN:1996756X
CODEN:PSISDG
ISBN-13:9781510621992
Document type:Conference article (CA)
Conference name:10th International Conference on Digital Image Processing, ICDIP 2018
Conference date:May 11, 2018 - May 14, 2018
Conference location:Shanghai, China
Conference code:138746
Sponsor:International Association of Computer Science and Information Technology; Shanghai Key Laboratory of Multidimensional Information Processing
Publisher:SPIE
Abstract:To relieve difficulties in traditional manual way of crag investigation in complex topographic area, this article supposed an unmanned aerial vehicle(UAV) oblique photography technique to acquire the accurate three dimensional (3D) spatial information of crags. Taking a crag on high steep mountain in southwest China as an example, using adapted UVA flight route plan to acquire oblique images, after data processing, the high precision 3D measurable model of the crag is produced. This method satisfies the need of constructing the real-time three-dimensional model of the crag with the non-contact data acquisition method, making up the limitation of the traditional ground investigation, providing a solution for the accurate investigation of the high steep crag. © 2018 SPIE.
Number of references:10
Main heading:Three dimensional computer graphics
Controlled terms:Aerial photography - Antennas - Data acquisition - Data handling - Image processing - Unmanned aerial vehicles (UAV)
Uncontrolled terms:3D modelling - Crag - Ground investigation - High-steep mountains - Southwest China - Spatial informations - Three-dimensional model - Threedimensional (3-d)
Classification code:652.1 Aircraft, General
Aircraft, General
- 723.2 Data Processing and Image Processing
Data Processing and Image Processing
- 742.1 Photography
Photography
DOI:10.1117/12.2503015
Funding Details: Number; Acronym; Sponsor:106112014CDJZR200019; FOM; Stichting voor Fundamenteel Onderzoek der Materie - Number; Acronym; Sponsor:41401380; NSFC; National Natural Science Foundation of China - Number; Sponsor:KJ201506; Chongqing Youth Science and Technology Talent Training Project - Number; Sponsor:Xm2015023; Chongqing Postdoctoral Science Foundation
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
6. Induction heating activated self-healing of cracks in SBS modified asphalt concrete adding steel grits
Accession number:20183605777803
Title of translation:SBS
Authors:He, Liang (1); Li, Guan-Nan (1); Xiong, Han-Jiang (1); Liu, Quan-Tao (2); Gao, Jie (1, 3); Huang, Hai-Lin (1)
Author affiliation:(1) National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing; 400074, China; (2) State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan; Hubei; 430070, China; (3) Department of Civil Engineering, Liverpool John Moores University, Liverpool; Merseyside; L3 3AF, United Kingdom
Source title:Jiaotong Yunshu Gongcheng Xuebao/Journal of Traffic and Transportation Engineering
Abbreviated source title:Jiaotong Yunshu Gongcheng Xuebao
Volume:18
Issue:3
Issue date:June 1, 2018
Publication year:2018
Pages:11-18
Language:Chinese
ISSN:16711637
Document type:Journal article (JA)
Publisher:Chang’an University
Abstract:SBS modified asphalt concrete beam specimens added steel grits with pre-cut were prepared, an electromagnetic induction heating experiment was carried out, the influences of heating distance, particle size and content(volume fraction) of steel grit on the crack self-healing property and road performance of SBS modified asphalt concrete were analyzed, and the corresponding suggestions on how to use such conductive materials were proposed. Research result shows that the smaller the heating distance is, the greater the induction heating rate is. When the induction coil is 10 mm away from the top of beam specimen, the specimen has higher heating rate and the infrared camera can capture the images easily. The steel grits are easily dispersed during the concrete preparation. The larger the size and content of steel grit are, the greater the average induction heating rate is. The top surface of the specimen has the largest average induction heating rate that reaches 1.25•s-1 when the volume fraction and particle size of steel grit are 6% and 1.4 mm, respectively. With the content increase of steel grit, the induction heating self-healing rate of the specimen gradually increases. The average self-healing rate can reach 89.2% when the maximum temperature of top surface of the specimen is 80. At the same time, the largest self-healing rate of the specimen is 96.2% when the content and particle size of steel grit are 6% and 1.0 mm, respectively. Steel grits improve the high-temperature stability of SBS modified asphalt concrete, but affect the low-temperature crack resistance. When the content and particle size of steel grit are 6% and 1.0 mm, respectively, the dynamic stability of the specimen is 6 813 times•mm-1, the residual strength ratio of freezing-thawing cleavage is 93.18%, the inundation Marshall residual intensity ratio is 93.88%, and the low-temperature bending strain only decreases to 3.155×10-3 that still meets the demand(≥3.0×10-3) of Technical Specification for Construction of Highway Asphalt Pavements (JTG F40-2004). Therefore, the SBS modified asphalt concrete may be used for induction heating self-healing pavement when the content and particle size of steel grit are 6% and 1.0 mm, respectively. © 2018, Editorial Department of Journal of Traffic and Transportation Engineering. All right reserved.
Number of references:22
Main heading:Induction heating
Controlled terms:Asphalt concrete - Concretes - Conductive materials - Electromagnetic induction - Heating rate - Particle size - Self-healing materials - Temperature - Volume fraction
Uncontrolled terms:High temperature stability - Low temperature crack resistances - Maximum temperature - Pavement material - SBS-modified asphalt - Self-healing of cracks - Self-healing properties - Technical specifications
Classification code:411.1 Asphalt
Asphalt
- 412 Concrete
Concrete
- 415 Metals, Plastics, Wood and Other Structural Materials
Metals, Plastics, Wood and Other Structural Materials
- 641.1 Thermodynamics
Thermodynamics
- 641.2 Heat Transfer
Heat Transfer
- 642.1 Process Heating
Process Heating
- 701.1 Electricity: Basic Concepts and Phenomena
Electricity: Basic Concepts and Phenomena
- 708.2 Conducting Materials
Conducting Materials
Numerical data indexing:Percentage 6.00e+00%, Percentage 8.92e+01%, Percentage 9.32e+01%, Percentage 9.39e+01%, Percentage 9.62e+01%, Size 1.00e-02m, Size 1.00e-03m, Size 1.40e-03m
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
7. Gust characteristic analysis of wind field at the periphery of typhoon ‘Bolaven’
Accession number:20183605784923
Title of translation:””
Authors:Wang, Xiaosong (1); Guo, Zengwei (1); Yuan, Hang (1); Zhao, Lin (2)
Author affiliation:(1) The Ministry of Education Engineering Research Center of Bridge Structure and Material in Mountainous Area, Chongqing Jiaotong University, Chongqing; 400074, China; (2) State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai; 200092, China
Corresponding author:Guo, Zengwei(zengweiguo@cqjtu.edu.cn)
Source title:Zhendong yu Chongji/Journal of Vibration and Shock
Abbreviated source title:J Vib Shock
Volume:37
Issue:8
Issue date:April 28, 2018
Publication year:2018
Pages:34-41
Language:Chinese
ISSN:10003835
Document type:Journal article (JA)
Publisher:Chinese Vibration Engineering Society
Abstract:Base on long-time-measured data of typhoon ‘Bolaven’ recorded at the Xihoumen Bridge, wind characteristics, such as wind speed, wind direction, turbulence intensity, probability distribution and its extreme and average value of gust factor under different averaging time periods were investigated. It was shown that the turbulence intensity and gust factor of Balaven were decreasing with average wind speed in three directions, and that the mean statistical result of turbulence intensity related to longitudinal fluctuation components was 0.161 at high wind speed, which was higher than the recommended value. The gust factor analysis results show that the probability distribution of gust factor is converted from extreme value type III to type II with gust averaging time, and the statistical value of gust factor at 95% confidence level is identical to the recommended value in load code for the design of building structures. It is also discovered that Logarithmic Gauss distribution function can be used to describe the relationship between gust factor and its corresponding time interval. © 2018, Editorial Office of Journal of Vibration and Shock. All right reserved.
Number of references:16
Main heading:Hurricanes
Controlled terms:Distribution functions - Probability distributions - Storms - Turbulence - Wind
Uncontrolled terms:Characteristic analysis - Confidence levels - Design of buildings - Field measurement - Gust factors - Recommended values - Turbulence intensity - Wind characteristics
Classification code:443.1 Atmospheric Properties
Atmospheric Properties
- 443.3 Precipitation
Precipitation
- 922.1 Probability Theory
Probability Theory
Numerical data indexing:Percentage 9.50e+01%
DOI:10.13465/j.cnki.jvs.2018.08.006
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
8. Phase change heat storage properties of PEG/SiO2 shape-stabilized phase change materials in asphalt
Accession number:20183605767350
Title of translation:/SiO2
Authors:He, Lihong (1, 2); Wang, Hao (1, 2); Yang, Fan (1, 2); Zhu, Hongzhou (1); Tang, Boming (1)
Author affiliation:(1) National and Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing; 400074, China; (2) College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author:Tang, Boming(tbm@netease.com)
Source title:Huagong Jinzhan/Chemical Industry and Engineering Progress
Abbreviated source title:Huagong Jinzhan/Chem. Ind. Eng. Prog.
Volume:37
Issue:3
Issue date:March 5, 2018
Publication year:2018
Pages:1076-1083
Language:Chinese
ISSN:10006613
Document type:Journal article (JA)
Publisher:Chemical Industry Press
Abstract:Considering the excellent adsorptive performance of porous silica, we prepared the polyethylene glycol/silicon dioxide shape-stabilized phase change materials(PEG/SiO2 SSPCM)by impregnating different amounts of polyethylene glycol into the pore structure of silicon dioxide gel. And asphalt-shape-stabilized phase change materials blends(Asphalt-SSPCM)with different amounts of polyethylene glycol were prepared by the melt blending method. The pore structure of silicon dioxide and morphology of PEG/SiO2 SSPCM were characterized by using porosity analyzing instrument and scanning electron microscope(SEM). The crystal structure, chemical compatibility, heat storage property and heat stability of PEG/SiO2 SSPCM in asphalt were studied by X-ray powder diffraction(XRD), Fourier transforming infrared spectrum(FTIR)and synthesized thermal analyzer (DSC/TG). The results showed that silicon dioxide had porous microstructure with high surface area, which can absorb polyethylene glycol. Polyethylene glycol crystals still existed in the Asphalt-SSPCM, and the heat storage ability of the Asphalt-SSPCM increased with increasing the polyethylene glycol amount in the blends. The enthalpy of the blends was 117.5J/g with 76.1% polyethylene glycol, and the blends with different amounts of polyethylene glycol all showed favorable heat stability and cooling effect, but there was only physical interaction between Asphalt-SSPCM. Moreover, the heat storage principle of Asphalt-SSPCM was analyzed based on the phase change theory. © 2018, Chemical Industry Press. All right reserved.
Number of references:19
Main heading:Phase change materials
Controlled terms:Asphalt - Blending - Chemical stability - Crystal structure - Fourier transform infrared spectroscopy - Heat storage - Passive solar buildings - Polyethylene glycols - Polyethylenes - Pore structure - Porous silicon - Scanning electron microscopy - Silica - Storage (materials) - Thermoanalysis - X ray powder diffraction
Uncontrolled terms:Chemical compatibility - High surface area - Melt-blending methods - Phase change heat storages - Physical interactions - Porous microstructure - Shape stabilized phase change material - Storage properties
Classification code:411.1 Asphalt
Asphalt
- 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals
- 657.1 Solar Energy and Phenomena
Solar Energy and Phenomena
- 694.4 Storage
Storage
- 801 Chemistry
Chemistry
- 802.3 Chemical Operations
Chemical Operations
- 815.1.1 Organic Polymers
Organic Polymers
- 931.2 Physical Properties of Gases, Liquids and Solids
Physical Properties of Gases, Liquids and Solids
- 933.1.1 Crystal Lattice
Crystal Lattice
Numerical data indexing:Percentage 7.61e+01%, Specific_Energy 1.18e+05J/kg
DOI:10.16085/j.issn.1000-6613.2017-1130
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
9. Research on the fixation transition behavior of drivers on expressway in foggy environment
Accession number:20183605781665
Authors:Xuguang, Zhang (1); Jianping, Gao (1)
Author affiliation:(1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author:Xuguang, Zhang(15953331600@163.com)
Source title:Safety Science
Abbreviated source title:Saf. Sci.
Issue date:2018
Publication year:2018
Language:English
ISSN:09257535
E-ISSN:18791042
CODEN:SSCIEO
Document type:Article in Press
Publisher:Elsevier B.V.
Abstract:To study the fixation behavior of drivers and the characteristics of the fixation transition in the path-finding process in a foggy environment, a natural driving behavior test method and noncontact eye tracker were used to conduct a real vehicle test and obtain the fixation distribution data of drivers. Dynamic and density clustering methods were used to analyze the distribution characteristics of a driver’s fixation area and to draw the zone of interest in a foggy environment. By using a Markov chain to analyze the driver’s fixation point transition, the driver’s fixation transfer probability matrix was constructed, and the driver’s fixation transition state was obtained. When the driver was driving in an environment with low visibility, the focus of his attention was concentrated in the nearby area, and a lower visibility resulted in a more focused visual search range. When the visibility was below 50 m, the driver’s visual search focus increased by 23.6%. © 2018 Elsevier Ltd
Number of references:17
Main heading:Behavioral research
Controlled terms:Eye tracking - Markov processes - Testing - Truck drivers - Visibility
Uncontrolled terms:Area of interest - Density clustering - Distribution characteristics - Fixation characteristics - Fixation distributions - Real vehicle tests - Transfer probability matrix - Transition behavior
Classification code:741.2 Vision
Vision
- 912.4 Personnel
Personnel
- 922.1 Probability Theory
Probability Theory
- 971 Social Sciences
Social Sciences
Numerical data indexing:Percentage 2.36e+01%, Size 5.00e+01m
DOI:10.1016/j.ssci.2018.08.020
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
10. Molecular Dynamic Simulation of Self-healing Behavior of Asphalt Binder
Accession number:20183605777622
Title of translation:
Authors:Zhu, Jianyong (1)
Author affiliation:(1) National & Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author:Zhu, Jianyong(751332737@qq.com)
Source title:Jianzhu Cailiao Xuebao/Journal of Building Materials
Abbreviated source title:Jianzhu Cailiao Xuebao
Volume:21
Issue:3
Issue date:June 1, 2018
Publication year:2018
Pages:433-439
Language:Chinese
ISSN:10079629
Document type:Journal article (JA)
Publisher:Tongji University
Abstract:Solubility parameter is used as an evaluation index for compatibility of asphalt components. The rationality of the model of each component of asphalt is verified. The asphalt molecular model was established after the proportion of asphalt component was determined by the four component test, and the asphalt stabilized structure was obtained. 1nm width of crack in the asphalt stable phase was preset, the variation of density, energy and mean square displacement of the asphalt molecules at different temperatures were studied by molecular dynamics simulation. The results show that before the equilibrium state, the density and energy change significantly, asphalt has sub-diffusive behavior,The mean square displacement of asphalt molecules has a nonlinear relationship with time, indicating that the mean square displacement of asphalt molecules is nonlinear secondary diffusion process, and when reaching equilibrium state, the energy and density stability, asphalt self-diffusion velocity and time have good linear correlation, the molecular diffusion rate increases with the increase of temperature, which shows that the simulation of asphalt molecular self-healing behavior is feasible using the research methods and ideas of molecular dynamic simulation. © 2018, Editorial Department of Journal of Building Materials. All right reserved.
Number of references:22
Main heading:Asphalt
Controlled terms:Binders - Diffusion - Molecular dynamics - Molecules - Solubility
Uncontrolled terms:Asphalt binders - Mean square displacement - Molecular diffusion - Molecular dynamics simulations - Non-linear relationships - Secondary diffusion - Self-healing - Solubility parameters
Classification code:411.1 Asphalt
Asphalt
- 801.4 Physical Chemistry
Physical Chemistry
- 803 Chemical Agents and Basic Industrial Chemicals
Chemical Agents and Basic Industrial Chemicals
- 931.3 Atomic and Molecular Physics
Atomic and Molecular Physics
Numerical data indexing:Size 1.00e-09m
DOI:10.3969/j.issn.1007-9629.2018.03.014
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
11. Study of Quit Willingness of Farmer’s Rural Residential Land from the Prospective of Human Capital: Case of Xinxiang in Henan Province
Accession number:20183605771945
Title of translation:
Authors:Shen, Haojing (1, 2); Feng, Changchun (2); Chen, Chun (3)
Author affiliation:(1) School of Humanities & Social Sciences, University of Science & Technology Beijing, Beijing; 100083, China; (2) College of Urban and Environmental Sciences, Peking University, Beijing; 100871, China; (3) College of Architecture and Urban Planning, Chongqing Jiaotong University, Chongqing; 400074, China
Corresponding author:Chen, Chun(chenchun@pku.edu.cn)
Source title:Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis
Abbreviated source title:Beijing Daxue Xuebao Ziran Kexue Ban
Volume:54
Issue:3
Issue date:May 20, 2018
Publication year:2018
Pages:680-686
Language:Chinese
ISSN:04798023
CODEN:PCTHAP
Document type:Journal article (JA)
Publisher:Peking University
Abstract:In order to explore the influence factors of farmers’ quit willingness of their rural residential land from the perspective of human capital theory, the authors report a survey from Xinxiang, a traditional agricultural area in Central China, and research the quit willingness of farmer’s rural residential land through interview and questionnaire survey. The authors build explanatory variable index system from three aspects: human capital, economic capital and land assets. A method of Logit model is applied to explore the main influence factors of farmers’ willingness to quit the right of farmer’s rural residential land. The results indicate that farmers don’t want to transfer their rural residential land in traditional agricultural area. Human capital is the important factor to affect the transfer of farmers’ rural residential land. Farmers’ knowledge and experience is important and significant for their quit willingness, rather than farmers’ education level. In addition, the impact of economic capital and land assets on farmer’s quit willingness is not significant. The research suggests that the government should raise farmers’ human capital from the aspects of enriching farmer’s knowledge and experience. © 2018 Peking University.
Number of references:27
Main heading:Agriculture
Controlled terms:Housing - Personnel - Rural areas - Surveys
Uncontrolled terms:Explanatory variables - Human capital theories - Human capitals - Knowledge and experience - Land administration - Logit modeling - Questionnaire surveys - Rural residential
Classification code:403.1 Urban Planning and Development
Urban Planning and Development
- 821 Agricultural Equipment and Methods; Vegetation and Pest Control
Agricultural Equipment and Methods; Vegetation and Pest Control
- 912.4 Personnel
Personnel
DOI:10.13209/j.0479-8023.2017.182
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
12. Feature Analysis of Waterborne Epoxy Resin-Emulsified Asphalt Blend
Accession number:20183605777619
Title of translation:
Authors:Zhou, Qiwei (1, 2); Ling, Tianqing (1); Hao, Zengheng (2); Wu, Xueliu (2); Li, Lu (2); Xu, Guanghong (2)
Author affiliation:(1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing; 400074, China; (2) Chongqingshi Zhixiang Paving Technology Engineering Co., Ltd., Chongqing; 400067, China
Source title:Jianzhu Cailiao Xuebao/Journal of Building Materials
Abbreviated source title:Jianzhu Cailiao Xuebao
Volume:21
Issue:3
Issue date:June 1, 2018
Publication year:2018
Pages:414-419
Language:Chinese
ISSN:10079629
Document type:Journal article (JA)
Publisher:Tongji University
Abstract:Emulsified asphalt, waterborne epoxy resin and curing agent were prepared by mixing in different proportion,and the mechanical properties, gel properties and rheological behavior of the blend were studied through indoor test,microscopic phase structure and blending mechanism of blend are clarified by fluorescent microscope and infrared spectrum analysis. The results show that when the mass ratio of emulsified asphalt and waterborne epoxy resin is 5:5, the max drawing strength at 25 and 45 are 3.37MPa and 1.98MPa respectively; when the mass ratio of emulsified asphalt and waterborne epoxy resin is 5:3,tensile strength is 3.47MPa,elongation at break is 38%,and both of them are in a turning point; gel time is shortened with the increase of temperature and epoxy resin content, when the mass ratio of emulsified asphalt and waterborne epoxy resin is 5:5, gel time is about 10min in 50; phase structure of blend will change with the increase of epoxy resin content, when the mass ratio of emulsified asphalt and waterborne epoxy resin is 5:3, phase reversal takes place, epoxy resin as the continuous phase, emulsified asphalt as the dispersed phase; storage modulus, loss modulus and glass transition temperature of the blend are increased with the increase of epoxy resin content, when the mass ratio of emulsified asphalt and waterborne epoxy resin is 5:3, all of them were the maximum, glass transition temperature is 70;the blending way is physical blending through the infrared spectrum analysis, so the mass ratio of emulsified asphalt and epoxy resin is not more than 5:3. © 2018, Editorial Department of Journal of Building Materials. All right reserved.
Number of references:12
Main heading:Epoxy resins
Controlled terms:Asphalt - Blending - Emulsification - Glass - Glass transition - Mechanical properties - Phase structure - Rheology - Spectroscopy - Spectrum analysis - Temperature - Tensile strength
Uncontrolled terms:Different proportions - Elongation at break - Emulsified asphalts - Gel properties - Infrared spectrum - Physical blending - Rheological behaviors - Water-borne epoxy resins
Classification code:411.1 Asphalt
Asphalt
- 641.1 Thermodynamics
Thermodynamics
- 802.3 Chemical Operations
Chemical Operations
- 812.3 Glass
Glass
- 815.1.1 Organic Polymers
Organic Polymers
- 931.1 Mechanics
Mechanics
- 933 Solid State Physics
Solid State Physics
Numerical data indexing:Percentage 3.80e+01%, Pressure 1.98e+06Pa, Pressure 3.37e+06Pa, Pressure 3.47e+06Pa, Time 6.00e+02s
DOI:10.3969/j.issn.1007-9629.2018.03.011
Compendex references:YES
Database:Compendex
Compilation and indexing terms, Copyright 2018 Elsevier Inc.
Data Provider:Engineering Village
