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Sustainable Geotechnical Engineering
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Sustainable Geotechnical Engineering

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Engineering and Science".

Deadline for manuscript submissions: closed (24 March 2024) | Viewed by 1863

Special Issue Editor

Dr. Alireza Ahangar-Asr

E-Mail Website
Guest Editor
School of Computing, Science and Engineering, University of Salford, Salford M5 4WT, UK
Interests: geotechnical engineering and soil mechanics; computational geomechanics; machine learning and artificial intelligence in constitutive modelling of complicated civil and geotechnical engineering materials and systems; slope stability; saturated and unsaturated soils

Special Issue Information

Dear Colleagues,

In modern times, engineers and researchers need to deal with a lot of challenges related to the environment, climate change, disposal of toxic and hazardous materials/wastes, and remediation of contaminated land. All economies are trying to develop in a way that is sustainable and makes the most of the clean energy derived from renewable resources.

Sustainable Geotechnical Engineering aims to disseminate cutting-edge developments in knowledge and provides an alternative view regarding the basic concepts of a sustainable society implementing new theories, technologies, and systems as well as new experimental and analytical approaches in the area of geotechnical engineering and sustainable environment.

All relevant contributions will be considered and peer-reviewed, and research papers, communications, and review articles will be published under the broad subject areas as listed below:

  • Geotechnical and geo-environmental engineering;
  • Soil and rock mechanics, behaviour and interactions with structures and the surrounding built environment;
  • Understanding characteristics of porous media;
  • Contaminated land reclamation and remediation, waste control, management, recycling, and landfills;
  • Impacts of global warming on geo-environmental aspects;
  • Sustainable carbon capture and storage;
  • Stability, risk monitoring, management and monitoring;
  • Dam maintenance, damage monitoring and control;
  • Artificial intelligence and geo-environment.

Dr. Alireza Ahangar-Asr
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

19 pages, 10151 KiB  
Article
Dynamic Shear Responses of Combined Contaminated Soil Treated with Nano Zero-Valent Iron (nZVI) under Controlled Moisture
by Jing Wei, Yongzhan Chen, Qinxi Dong, Chen Fan and Meng Zou
Sustainability 2024, 16(1), 289; https://doi.org/10.3390/su16010289 - 28 Dec 2023
Viewed by 687
Abstract
Nano zero-valent iron (nZVI) technologies have gained recognition for the remediation of heavily contaminated sites and reused as backfilling soil. The moisture environment at these sites not only impacts the reactions and reactivity of nZVI but also the dynamic responses of compacted backfilled [...] Read more.
Nano zero-valent iron (nZVI) technologies have gained recognition for the remediation of heavily contaminated sites and reused as backfilling soil. The moisture environment at these sites not only impacts the reactions and reactivity of nZVI but also the dynamic responses of compacted backfilled soils. The research explored the effects of different nZVI dosages (0.2%, 0.5%, 1%, 2%, and 5%) on Lead-Zinc-Nickel ions contaminated soil under a controlled-moisture condition. Cyclic triaxial tests were performed to evaluate the dynamic responses of treated soil samples prepared using a consistent moisture compaction method. Particle size distribution and Atterberg limits tests assessed changes in particle size and plasticity. The study revealed a minor reduction in the particle size, liquid limit, plastic limit, and plasticity index of the contaminated soil. Notably, increasing nZVI dosages in treated soils led to growing Atterberg limits. An increase in the specific sand fraction of treated soils was observed with nZVI, suggesting nanoparticles–soil aggregations favoring existing larger particles. Stepwise loading cyclic triaxial tests indicated an optimal dynamic response of soil treated with 1% nZVI under the controlled-moisture condition, proven by notable enhancements in the maximum shear modulus, maximum shear stress, less shear strain, and higher damping ratio within the small strain range. It should be noted that moisture content in treated soils declined significantly with higher nZVI dosages during preparation, potentially impeding effective aggregation and the formation of a solid soil skeleton. These findings advance the importance of considering the balanced nZVI dosage and moisture content when employing the safety assessment of practical applications in both nano-remediation techniques and soil mechanics. Full article
(This article belongs to the Special Issue Sustainable Geotechnical Engineering)
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20 pages, 9464 KiB  
Article
Triaxial Shear Analysis Using Discrete Element Methods for Sandy Soil with an Improved Flexible Membrane Boundary
by Tingting Yang, Weicheng Zheng, Hongguang Zhang and Xiabing Yue
Sustainability 2023, 15(17), 12911; https://doi.org/10.3390/su151712911 - 26 Aug 2023
Viewed by 786
Abstract
Exploring strain localization has substantial potential to significantly impact the disaster resilience and mitigation capabilities of infrastructure, thus influencing project sustainability. Consequently, the field of sustainable geotechnical engineering is progressively directing attention toward studying soil strain localization. This research focuses on triaxial testing [...] Read more.
Exploring strain localization has substantial potential to significantly impact the disaster resilience and mitigation capabilities of infrastructure, thus influencing project sustainability. Consequently, the field of sustainable geotechnical engineering is progressively directing attention toward studying soil strain localization. This research focuses on triaxial testing to deepen our understanding of this phenomenon by applying discrete element methods, thereby fostering the advancement of sustainable geotechnical engineering practices. While rigid-wall-based discrete element triaxial tests have been extensively studied, using flexible boundaries in these tests has received limited attention. This study introduces a three-stage method to enhance stress application in flexible membranes by applying confining pressure. A comparison of triaxial tests was conducted at both macroscopic and microscopic scales, utilizing flexible and rigid boundaries. Moreover, numerical simulations were performed on flexible membrane samples with various particle sizes to identify appropriate dimensions for flexible boundaries. Our results demonstrate that the improved flexible membrane provides more accurate representations of macroscopic and microscopic sample variations than rigid walls. Keeping the particle sizes for flexible membranes within the range of 0.2 to 0.8 times the characteristic particle size (r) is essential for striking a balance between simulation accuracy and computational efficiency. These findings enhance the accuracy of triaxial compression test simulations and offer a valuable foundation for studying strain localization in soils. Understanding these phenomena is essential for various geotechnical engineering applications, such as foundation design and slope stability analysis. Furthermore, these findings form a pivotal foundation for resource optimization and enhancing the reliability of engineered structures, thereby driving the advancement of sustainable geotechnical engineering practices. Full article
(This article belongs to the Special Issue Sustainable Geotechnical Engineering)
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