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Applied Sciences
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Toward Sustainable Engineering Structures for Better Safety in Built-Environment II
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Toward Sustainable Engineering Structures for Better Safety in Built-Environment II

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: closed (20 September 2022) | Viewed by 6142

Special Issue Editors

Dr. Deuckhang (DK) Lee

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Guest Editor
Department of Architectural Engineering, Chungbuk National University (CBNU), Cheongju, Korea
Interests: structural engineering; shear; torsion; flexure; seismic behavior of prestressed concrete structure
Special Issues, Collections and Topics in MDPI journals
Dr. Sung-Woo Moon

E-Mail Website
Guest Editor
Department of Civil Engineering, Nazarbayev University 53 Qabanbay Batyr Avenue, Astana 010000, Kazakhstan
Interests: geotechnical engineering; geophysical site (soil&rock) characterization; geotechnical earthquake engineering; soil improvement
Dr. Donghyuk Jung

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Guest Editor
Department of Architectural Engineering, Pusan National University, Busan, Korea
Interests: seismic behavior of structures
Special Issues, Collections and Topics in MDPI journals
Dr. Sanghee Kim

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Guest Editor
Department of Architectural Engineering, Kyonggi University, Suwon-si, Korea
Interests: blast and impact behavior of structures
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The concept of safe design in architectural and civil engineering is important for protecting humanity, considering the economic, environmental, and sociality aspects of society and their capacity and opportunity to maintain and improve the quality of life without degrading the quantity and quality. This Special Issue covers various research topics related to safety and sustainability issues in the recent engineering-built environment. The results disseminated in this Special Issue will be helpful in understanding how to make our society a better place by utilizing scientific and engineering methods, which is of interest for potential readers of Applied Sciences. The manuscripts submitted to this Special Issue will be subject to a prompt peer review process for the rapid and wide dissemination of research results, developments, and applications.

The scope of this Special Issue covers all the aspects of architectural and civil engineering, including the behavior of various structural, geotechnical, and environmental components and systems.

Dr. Deuckhang (DK) Lee
Dr. Sung-Woo Moon
Dr. Donghyuk Jung
Dr. Sanghee Kim

Guest Editors

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. Applied Sciences 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.

Keywords

  • sustainable construction materials
  • steel, concrete, and composite structures
  • prestressed and precast construction
  • structural reliability
  • structural strengthening and rehabilitation
  • sustainable engineering in design method, standard and code, and its applications
  • sustainable building and infrastructures
  • long-term maintenance and monitoring of built environments
  • sustainable alternatives in geotechnical engineering
  • sustainable engineering management for the long service life of built environments
  • new emerging environmental issues

Related Special Issue

Published Papers (3 papers)

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Research

16 pages, 4685 KiB  
Article
Flexural Behavior of Self-Prestressed RC Slabs with Fe-Based Shape Memory Alloy Rebar
by Yeong-Mo Yeon, Ki-Nam Hong and Sang-Won Ji
Appl. Sci. 2022, 12(3), 1640; https://0-doi-org.brum.beds.ac.uk/10.3390/app12031640 - 04 Feb 2022
Cited by 8 | Viewed by 1282
Abstract
A lot of studies have been conducted to introduce self-prestress to structures using Fe-based shape memory alloys (Fe-SMAs). Technology to introduce self-prestress using Fe-SMAs can resolve the disadvantages of conventional prestressed concrete. However, most of the research to introduce a self-prestress force to [...] Read more.
A lot of studies have been conducted to introduce self-prestress to structures using Fe-based shape memory alloys (Fe-SMAs). Technology to introduce self-prestress using Fe-SMAs can resolve the disadvantages of conventional prestressed concrete. However, most of the research to introduce a self-prestress force to a structure using Fe-SMAs has been focused on using Fe-SMAs for the repair and strengthening of aging structures. Therefore, in this paper, a study was conducted to introduce self-prestress into a new structure. To this end, in this paper, an experimental study was conducted to evaluate the flexural behavior of self-prestressed concrete slabs with Fe-SMA rebar. Nine specimens were built with consideration of the amount and activation of Fe-SMA rebars as experimental variables. The Fe-SMA rebars used in the specimens exhibited recovery stress of about 335 MPa under the conditions of a pre-strain of 0.04 and a heating temperature of 160 °C. Activation of the Fe-SMA rebars by electrical resistance heating applied an eccentric compression force to the specimen to induce a camber of 0.208–0.496 mm. It was confirmed through a 4-point bending test that the initial crack loads of the activated specimens were 40~101% larger than that of the non-activated specimens. However, the ultimate loads of the activated specimens showed a difference within 3% from that of the non-activated specimens, confirming that the effect of activation on improving the ultimate strength was negligible. Finally, it was confirmed that repetitive activation of the Fe-SMA rebar could repeatedly apply compressive force to the slab. Full article
(This article belongs to the Special Issue Toward Sustainable Engineering Structures for Better Safety in Built-Environment II)
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17 pages, 3144 KiB  
Article
Role of Bimodal Water Retention Curve on the Unsaturated Shear Strength
by Alfrendo Satyanaga, Nail Bairakhmetov, Jong R. Kim and Sung-Woo Moon
Appl. Sci. 2022, 12(3), 1266; https://0-doi-org.brum.beds.ac.uk/10.3390/app12031266 - 25 Jan 2022
Cited by 17 | Viewed by 2102
Abstract
Changes in climatic conditions are expected globally resulting in a higher rainfall intensity and longer duration of rainfall. The increase in the rainwater infiltration into the soil contributes to many geotechnical issues, such as excessive settlement, retaining wall failure and rainfall-induced slope failures. [...] Read more.
Changes in climatic conditions are expected globally resulting in a higher rainfall intensity and longer duration of rainfall. The increase in the rainwater infiltration into the soil contributes to many geotechnical issues, such as excessive settlement, retaining wall failure and rainfall-induced slope failures. These geotechnical problems could be mitigated by the improvement of the problematic soil with the incorporation of the unsaturated soil mechanic principles. Dual-porosity soils or soils with bimodal water retention curve (WRC) are able to retain more water during prolonged drying and they would be able to drain out water faster during intense rainfall to maintain the slope stability. The objective of this study is to investigate the characteristics of the unsaturated shear strength of soil with bimodal WRC. In addition, the new mathematical equation is proposed to estimate the unsaturated shear strength of soils with a bimodal WRC. The results of the study indicated that the nonlinearity of the unsaturated shear strength is a function of the shape of bimodal WRC limited by the first and second air-entry value (AEV) of dual-porosity soils. The proposed equation agreed well with the experimental data of the unsaturated shear strength for dual-porosity soil. Full article
(This article belongs to the Special Issue Toward Sustainable Engineering Structures for Better Safety in Built-Environment II)
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14 pages, 35657 KiB  
Article
Numerical Study of RC Beams Strengthened with Fe-Based Shape Memory Alloy Strips Using the NSM Method
by Yeong-Mo Yeon, Ki-Nam Hong, Sugyu Lee and Sang-Won Ji
Appl. Sci. 2021, 11(15), 6809; https://0-doi-org.brum.beds.ac.uk/10.3390/app11156809 - 24 Jul 2021
Cited by 11 | Viewed by 1988
Abstract
This paper presents a finite element (FE) analysis for predicting the flexural behavior of reinforced concrete (RC) beams strengthened with Fe-based shape memory alloy (Fe-SMA) strips using a near surface mounted (NSM) method. Experimental results reported in the literature were used to verify [...] Read more.
This paper presents a finite element (FE) analysis for predicting the flexural behavior of reinforced concrete (RC) beams strengthened with Fe-based shape memory alloy (Fe-SMA) strips using a near surface mounted (NSM) method. Experimental results reported in the literature were used to verify the proposed FE model. FE analyses were conducted using OpenSees, a general-purpose structural FE analysis program. The RC beam specimens were modeled using a nonlinear beam-column element and a fiber element. The Concrete 02 model, Steel 01 model, and Pinching 04 model were applied to the concrete, steel reinforcement, and Fe-SMA strip in the fiber element, respectively, and the FE analysis was carried out in a displacement control method based on the Newton-Raphson method. The FE model of this study accurately predicted the initial crack load, yield load, and ultimate load. From parametric analyses, it was concluded that an increase in the compressive strength of the concrete increases the ductility of the specimen, and an increase in the level of recovery stress on the Fe-SMA strip increases the initial stiffness of the specimen. Full article
(This article belongs to the Special Issue Toward Sustainable Engineering Structures for Better Safety in Built-Environment II)
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