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Full-Text Articles in Engineering
Development Of The New Educational Content "Small Uas In Civil Engineering Application Scenarios", E. Levin, K. Vach, R. Shults
Development Of The New Educational Content "Small Uas In Civil Engineering Application Scenarios", E. Levin, K. Vach, R. Shults
Michigan Tech Publications
The key point of this paper is presentation of the main idea and some results of the project "Small UAS in civil engineering application scenarios" (SUAS-CAS). This project was proposed by newly established in 2016 ISPRS WG V/7: "Innovative Technologies in Training Civil Engineers and Architects". Here we are presenting our experience in using low-cost UAS in training architects at Kyiv National University of Construction and Architecture, which was chosen as basic for this project. In the first part of paper, the project outline is presented. Then the first and possible follow project outcomes were described. In some details is …
Preparation And Properties Of Asphalt Binders Modified By Thfs Extracted From Direct Coal Liquefaction Residue, Jie Ji, Hui Yao, Wenhua Zheng, Zhi Suo, Yuefeng Shi, Ying Xu, Hao Wu, Zhanping You
Preparation And Properties Of Asphalt Binders Modified By Thfs Extracted From Direct Coal Liquefaction Residue, Jie Ji, Hui Yao, Wenhua Zheng, Zhi Suo, Yuefeng Shi, Ying Xu, Hao Wu, Zhanping You
Michigan Tech Publications
This paper aims to study the preparation and viscoelastic properties of asphalt binder modified by tetrahydrofuran soluble fraction (THFS) extracted from direct coal liquefaction residue. The modified asphalt binders, which blended with SK-90 (control asphalt binder) and 4%, 6%, 8% and 10% THFS (by weight of SK-90), were fabricated. The preparation process for asphalt binder was optimized in terms of the orthogonal array test strategy and gray correlation analysis results. The properties of asphalt binder were measured by applying Penetration performance grade and Superpave performance grade specifications. In addition, the temperature step and frequency sweep test in Dynamic Shear Rheometer …
Evaluation Of Five Dry Particle Deposition Parameterizations For Incorporation Into Atmospheric Transport Models, Tanvir Khan, Judith Perlinger
Evaluation Of Five Dry Particle Deposition Parameterizations For Incorporation Into Atmospheric Transport Models, Tanvir Khan, Judith Perlinger
Michigan Tech Publications
Despite considerable effort to develop mechanistic dry particle deposition parameterizations for atmospheric transport models, current knowledge has been inadequate to propose quantitative measures of the relative performance of available parameterizations. In this study, we evaluated the performance of five dry particle deposition parameterizations developed by Zhang et al. (2001) ("Z01"), Petroff and Zhang (2010) ("PZ10"), Kouznetsov and Sofiev (2012) ("KS12"), Zhang and He (2014) ("ZH14"), and Zhang and Shao (2014) ("ZS14"), respectively. The evaluation was performed in three dimensions: model ability to reproduce observed deposition velocities, Vd (accuracy); the influence of imprecision in input parameter values on the modeled Vd …
Towards An Alternate Evaluation Of Moisture-Induced Damage Of Bituminous Materials, Aboelkasim Diab, Zhanping You, Xu Yang, Mohd Rosli Mohd Hasan
Towards An Alternate Evaluation Of Moisture-Induced Damage Of Bituminous Materials, Aboelkasim Diab, Zhanping You, Xu Yang, Mohd Rosli Mohd Hasan
Michigan Tech Publications
Moisture-induced damage is widely known to cause multiple distresses that affect the durability of constructed pavements and eventually lead to the costly maintenance of pavement structures. The reliability and practicality of the assessment protocol to evaluate moisture susceptibility of flexible pavements presents a dilemma within the asphalt community that arises from the complexity and interrelation of moisture mechanisms in the asphalt–aggregate system. Researchers worldwide are continuously trying to develop suitable evaluation methods to simulate the combined destructive field-induced effects of moisture in the laboratory to help practitioners identify and alleviate this complex problem. The main objective of this article is …
Cross-Correlation-Based Structural System Identification Using Unmanned Aerial Vehicles., Hyungchul Yoon, Vedhus Hoskere, Jong-Woong Park, Billie F. Spencer
Cross-Correlation-Based Structural System Identification Using Unmanned Aerial Vehicles., Hyungchul Yoon, Vedhus Hoskere, Jong-Woong Park, Billie F. Spencer
Michigan Tech Publications
Computer vision techniques have been employed to characterize dynamic properties of structures, as well as to capture structural motion for system identification purposes. All of these methods leverage image-processing techniques using a stationary camera. This requirement makes finding an effective location for camera installation difficult, because civil infrastructure (i.e., bridges, buildings, etc.) are often difficult to access, being constructed over rivers, roads, or other obstacles. This paper seeks to use video from Unmanned Aerial Vehicles (UAVs) to address this problem. As opposed to the traditional way of using stationary cameras, the use of UAVs brings the issue of the camera …
Analysis Of Preparation And Properties On Shape Memory Hydrogenated Epoxy Resin Used For Asphalt Mixtures, Biao Ma, Xueyan Zhou, Kun Wei, Yanzhen Bo, Zhanping You
Analysis Of Preparation And Properties On Shape Memory Hydrogenated Epoxy Resin Used For Asphalt Mixtures, Biao Ma, Xueyan Zhou, Kun Wei, Yanzhen Bo, Zhanping You
Michigan Tech Publications
The objective of this investigation is to prepare the shape memory hydrogenated epoxy resin used for asphalt mixtures (SM-HEP-AM) and study its properties. The shape memory hydrogenated epoxy resin (SM-HEP) is prepared using hydrogenated bisphenol A epoxy resin (AL-3040), polypropylene glycol diglycidylether diacrylate (JH-230), and isophorone diamine (IPDA). The formulations of the SM-HEP-AM are obtained by the linearly fitted method. The thermo-mechanical property, molecular structure, and shape-memory performance of the SM-HEP-AM are studied. The glass-transition temperature (Tg) is determined using the differential scanning calorimeter (DSC). The results proved that the Tg level increased when the JH-230 content …
Adhesion Evaluation Of Asphalt-Aggregate Interface Using Surface Free Energy Method, Jie Ji, Hui Yao, Luhou Liu, Zhi Suo, Peng Zhai, Xu Yang, Zhanping You
Adhesion Evaluation Of Asphalt-Aggregate Interface Using Surface Free Energy Method, Jie Ji, Hui Yao, Luhou Liu, Zhi Suo, Peng Zhai, Xu Yang, Zhanping You
Michigan Tech Publications
The influence of organic additives (Sasobit and RH) and water on the adhesion of the asphalt-aggregate interface was studied according to the surface free energy theory. Two asphalt binders (SK-70 and SK-90), and two aggregate types (limestone and basalt) were used in this study. The sessile drop method was employed to test surface free energy components of asphalt, organic additives and aggregates. The adhesion models of the asphalt-aggregate interface in dry and wet conditions were established, and the adhesion work was calculated subsequently. The energy ratios were built to evaluate the effect of organic additives and water on the adhesiveness …
Property Analysis Of Exfoliated Graphite Nanoplatelets Modified Asphalt Model Using Molecular Dynamics (Md) Method, Hui Yao, Qingli Dai, Zhanping You, Andreas Bick, Min Wang, Shuaicheng Guo
Property Analysis Of Exfoliated Graphite Nanoplatelets Modified Asphalt Model Using Molecular Dynamics (Md) Method, Hui Yao, Qingli Dai, Zhanping You, Andreas Bick, Min Wang, Shuaicheng Guo
Michigan Tech Publications
This Molecular Dynamics (MD) simulation paper presents a physical property comparison study between exfoliated graphite nanoplatelets (xGNP) modified and control asphalt models, including density, glass transition temperature, viscosity and thermal conductivity. The three-component control asphalt model consists of asphaltenes, aromatics, and saturates based on previous references. The xGNP asphalt model was built by incorporating an xGNP and control asphalt model and controlling mass ratios to represent the laboratory prepared samples. The Amber Cornell Extension Force Field (ACEFF) was used with assigned molecular electro-static potential (ESP) charge from NWChem analysis. After optimization and ensemble relaxation, the properties of the control and …