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A Freezing-Thawing Damage Characterization Method for Highway Subgrade in Seasonally Frozen Regions Based on Thermal-Hydraulic-Mechanical Coupling Model

Qingsong Deng, Xiao Liu, Chao Zeng, Xianzhi He, Fengguang Chen, Siyu Zhang
2021 Sensors  
Based on Darcy's law of unsaturated soil seepage and heat conduction, the thermalhydraulicmechanical (THM) coupling model is established considering a variety of effects (i.e., ice–water phase transition  ...  This study will provide references for the design of highway subgrades in seasonally frozen soil areas.  ...  slopes effect) based on THM coupling model, and then conduct comparative research on freeze-thaw damage of the subgrade.  ... 
doi:10.3390/s21186251 pmid:34577458 fatcat:g2f6mnkdv5erfjaz7gaonz6vei

Long-Term Thermal Regimes of Subgrade under a Drainage Channel in High-Altitudinal Permafrost Environment

Hong Yu, Hongwu Han, Wei Ma, Zekun Ding, Ling Chen, Ying-hao Huang
2021 Advances in Materials Science and Engineering  
In this paper, a coupled mathematical model of heat and moisture transfer was constructed for freeze-thaw soils to investigate the long-term thermal regimes of subgrade beneath a drainage channel built  ...  Based on the numerical simulations, the thermal regimes of the subgrade both in warm and cold seasons were analyzed within a period of 50 years, as well as the impact of the widths of the channel.  ...  With the Harlan model and Richard equation, a coupled mathematic model for heat and moisture transfer in freezing-thawing soils was established. en, a numerical model was constructed based on the engineering  ... 
doi:10.1155/2021/6613114 fatcat:fqbjoavfirhndlf7nvty5yyw7e

Feasibility of Using Modified Silty Clay and Extruded Polystyrene (XPS) Board as the Subgrade Thermal Insulation Layer in a Seasonally Frozen Region, Northeast China

Qinglin Li, Haibin Wei, Leilei Han, Fuyu Wang, Yangpeng Zhang, Shuanye Han
2019 Sustainability  
the subgrade stability in seasonally frozen regions.  ...  To achieve the purposes of storing industry solid wastes and enhancing subgrade stability in seasonally frozen regions, Structure III, which utilized the modified silty clay (SC) and extruded polystyrene  ...  damage in seasonally frozen ground [2, 3] .  ... 
doi:10.3390/su11030804 fatcat:2pvnia26offenji56qx2ebsvim

Technology forecasting by analogy-based on social network analysis: The case of autonomous vehicles

Shuying Li, Edwin Garces, Tugrul Daim
2019 Technological forecasting & social change  
the subgrade stability in seasonally frozen regions.  ...  To achieve the purposes of storing industry solid wastes and enhancing subgrade stability in seasonally frozen regions, Structure III, which utilized the modified silty clay (SC) and extruded polystyrene  ...  damage in seasonally frozen ground [2, 3] .  ... 
doi:10.1016/j.techfore.2019.119731 fatcat:iy4oh7vj4nflrbznz33jslf22u

Permafrost Degradation and Its Hydrogeological Impacts

Huijun Jin, Yadong Huang, Victor F. Bense, Qiang Ma, Sergey S. Marchenko, Viktor V. Shepelev, Yiru Hu, Sihai Liang, Valetin V. Spektor, Xiaoying Jin, Xinyu Li, Xiaoying Li
2022 Water  
Second, we should aim towards revealing the physical and chemical mechanisms for the coupled processes of heat transfer and moisture migration in the vadose zone and expanding supra-permafrost taliks,  ...  towards the coupling of the hydrothermal dynamics of supra-, intra- and sub-permafrost waters, as well as that of water-resource changes and of hydrochemical and biogeochemical mechanisms for the coupled  ...  They have greatly helped in improving the quality of the paper. The authors also thank Ning Jia with the Harbin Institute of Technology for helping with Figure 2 .  ... 
doi:10.3390/w14030372 fatcat:wsd46e3h6va7vfc3zpg2qxl42u

New innovations in pavement materials and engineering: A review on pavement engineering research 2021

Jiaqi Chen, Hancheng Dan, Yongjie Ding, Yangming Gao, Meng Guo, Shuaicheng Guo, Bingye Han, Bin Hong, Yue Hou, Chichun Hu, Jing Hu, Ju Huyan (+31 others)
2021 Journal of Traffic and Transportation Engineering (English ed. Online)  
Peer review under responsibility of Periodical Offices of Chang'an University. 1 Authors contributed equally to this paper and are listed in alphabetical order of the last names.  ...  Thanks for the effort of all the authors to this paper. The authors contributed equally to this paper and are listed in alphabetical order of the last names.  ...  The cracks in concrete caused by freeze-thaw cycle is one of the main distresses of cement concrete pavement in seasonal frozen soil area.  ... 
doi:10.1016/j.jtte.2021.10.001 fatcat:iddh6sybcben7bmudeqwedh4rm

New innovations in pavement materials and engineering: A review on pavement engineering research 2021

Jiaqi Chen, Hancheng Dan, Yongjie Ding, Yangming Gao, Meng Guo, Shuaicheng Guo, Bingye Han, Bin Hong, Yue Hou, Chichun Hu, Jing Hu, Ju Huyan (+32 others)
2021 Journal of traffic and transportation engineering : JTTE 8(6)  
Peer review under responsibility of Periodical Offices of Chang'an University. 1 Authors contributed equally to this paper and are listed in alphabetical order of the last names.  ...  Thanks for the effort of all the authors to this paper. The authors contributed equally to this paper and are listed in alphabetical order of the last names.  ...  The cracks in concrete caused by freeze-thaw cycle is one of the main distresses of cement concrete pavement in seasonal frozen soil area.  ... 
doi:10.18154/rwth-2022-00362 fatcat:o4m3g5rlafbh5fkry4e27xkbfu

A design study on optoelectronic textiles in cases of LED lighting and solar powered handbags [chapter]

2014 Green Building, Materials and Civil Engineering  
No part of this publication or the information contained herein may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, by photocopying, recording  ...  Although all care is taken to ensure integrity and the quality of this publication and the information herein, no responsibility is assumed by the publishers nor the author for any damage to the property  ...  "Forfeiting Lives" as an example Gaussian model investigation in modeling of air pollution diffusion using Geographic Information System (GIS)  ... 
doi:10.1201/b17568-193 fatcat:zk52itpepvduzduz3azv47yubi

Advances in Instrumentation and Monitoring in Geotechnical Engineering

D. N. Singh, Nagaratnam Sivakugan, Sai K. Vanapalli
2011 Advances in Civil Engineering  
Based on this data, a prediction method for failures is discussed in detail.  ...  The SAA is based on triaxial micro-electro-mechanical system (MEMS) sensors to measure in situ deformation (angles relative to gravity) and dynamic accelerations up to a depth of one hundred meters.  ...  Richard Bathurst, Royal Military College of Canada (RMC), on the numerical and experimental models are also gratefully acknowledged.  ... 
doi:10.1155/2011/871406 fatcat:xqkapuqilnezfbgs537mieh5r4

Progress and prospects of applied research on physical geography and the living environment in China over the past 70 years (1949–2019)

Fahu Chen, Shaohong Wu, Peng Cui, Yunlong Cai, Yili Zhang, Yunhe Yin, Guobin Liu, Zhu Ouyang, Wei Ma, Linsheng Yang, Duo Wu, Jiaqiang Lei (+14 others)
2021 Journal of Geographical Sciences  
Physical geography is a basic research subject of natural sciences.  ...  This study summarized the practice and application of physical geography in China over the past 70 years in the following fields: regional differences in natural environments and physical regionalization  ...  The permafrost subgrade projects of the Qinghai-Tibet Railway and the Qinghai-Tibet Highway, as well as the subgrade projects of the high-speed railway in seasonally frozen ground region of Harbin-Dalian  ... 
doi:10.1007/s11442-021-1831-2 fatcat:yxjilrfxpranxln4vh6bt5wahm

Keynote Lecturers [chapter]

2016 Challenges and Innovations in Geotechnics  
No part of this publication or the information contained herein may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, by photocopying, recording  ...  Although all care is taken to ensure integrity and the quality of this publication and the information herein, no responsibility is assumed by the publishers nor the author for any damage to the property  ...  The principle of operation of the module "Ter moground" based on a set of factors into account: unsteadiness, physical and thermal nonlinearity work soils during the freezing and thawing in the spatial  ... 
doi:10.1201/9781315374949-8 fatcat:3y3nrdy64vatdpfayxmvjzowki

Thermal conductivity of soils

1978 International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts  
One group of (mathematical) models is based on a conceptual subdivision of the heat transfer mechanism in a particle-filled material into (lumped) thermal resistance elements.  ...  properties are difficult to incorporate in a mathematical model for the thermal conductivity one must in such cases resort to an emperical approach based on thermal conductivity measurements on selected  ...  To generate a computer program for determining temperature distributions in the ground one must also know specific heat, as well as latent heat exchanged during freezing and thawing.  ... 
doi:10.1016/0148-9062(78)91007-0 fatcat:u25wcjystra4rpdeutnini4fkm

Use of Waste/Recycled Material as Insulation in Road Construction

Seyedeh Negar Tavafzadeh Haghi
2019
At the end of the frost season, when thawing begins in the sublayers, pore water pressure builds up in the subgrade soil.  ...  Pavements in cold regions are prone to frost damages during winter as a result of prolong sever below zero temperature. Frost heave can negatively affect the performance and ride quality of the road.  ...  ACKNOWLEDGMENTS The authors greatly appreciate Alberta Transportation, the City of Edmonton, and Alberta Recycling for their financial and in-kind support of this project.  ... 
doi:10.7939/r3-ss7c-1t95 fatcat:osjmsnqxsjca7nebzvewnuszgy

Physical Model Testing of Piles in Thawing Soils Subjected to Single and Combined Loadings

Harshdeep Singh, University, My
2022
Passive soil resistance can be very effective in proving lateral support for the pile. However, passive soil resistance is a function of the soil thermal regime (freezing, thawing, and temperature).  ...  This thesis presents and discusses the results of physical model testing on model piles in unfrozen, frozen, and thawing fine sand, which are subjected to individual and combined axial (uplift) and lateral  ...  Acknowledgements I would like to thank my supervisor and a great mentor, Dr. Mamadou Fall, for  ... 
doi:10.20381/ruor-27836 fatcat:ctm54swpxzdlbiyurpa3orei6a

Evaluation of the Effects of Canadian Climatic Conditions on Pavement Performance using the Mechanistic Empirical Pavement Design Guide

Jhuma Saha
2011
Many thanks go to my husband, Baidya Nath Saha, for being by my side, and for his encouragement and his patience for being a husband, a father, a worker, and a student in the same time.  ...  According to the MEPDG, pavement designed by the ATPD method underestimates pavement thickness at poor subgrade and high traffic conditions.  ...  Freeze -thaw action is the key reason for pavement damage in cold climate regions.  ... 
doi:10.7939/r33g8n fatcat:hozrpzbltrcibevvlj5pzgxhoq
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