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Buildings
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Emerging Techniques in Concrete Materials and Structures: Experiments, Theories and...
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Emerging Techniques in Concrete Materials and Structures: Experiments, Theories and Applications

A special issue of Buildings (ISSN 2075-5309). This special issue belongs to the section "Building Materials, and Repair & Renovation".

Deadline for manuscript submissions: 10 September 2024 | Viewed by 1489

Special Issue Editors

Dr. Lei Li

E-Mail Website
Guest Editor
Department of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
Interests: post-earthquake assessment of building structures
Special Issues, Collections and Topics in MDPI journals
Dr. Jiantao Wang

E-Mail Website
Co-Guest Editor
School of Civil Engineering, Xi’an University of Architecture and Technology, Xi'an 710055, China
Interests: high-performance concrete-filled steel tubular (CFST) structures; disaster prevention and mitigation of power grid projects
Dr. Yixin Zhang

E-Mail Website
Co-Guest Editor
College of Civil Engineering, Huaqiao University, Xiamen 361021, China
Interests: concrete durability and retrofitting

Special Issue Information

Dear Colleagues,

As is well-known, concrete has played a significant role in human society since its invention. Recent engineering projects, such as the Hong Kong‒Zhuhai‒Macao Bridge, have placed higher performance requirements on materials and structures. In response, emerging techniques, such as ultra-high-performance concrete (UHPC), coral aggregate concrete (CAC), and seawater sea‒sand concrete (SSC), have emerged. Furthermore, the development of low-carbon and eco-friendly concrete is becoming increasingly popular, due to human concerns for their living environment. Evaluating the structural performance while applying these promising techniques in engineering structures is essential. In recent years, machine learning (ML)-based and vision-based methods in structural evaluation have received significant attention and have become supplements to traditional evaluation methods.

This Issue aims to invite high-quality contributions on the emerging techniques in concrete materials and structures. Authors are encouraged to submit original papers presenting new materials or structures, theoretical, and/or application-oriented research, including models, algorithms, and applications. Additionally, review papers on these topics are also welcome. The topics of interest include, but are not limited to:

  • Ultra-high-performance Concrete and Structures;
  • Seawater Sea‒Sand Concrete and Structures;
  • Low-carbon and Eco-friendly Materials and Structures;
  • Machine-learning-based and Computer-vision-based Structural Analysis and Evaluation;
  • New Techniques in Strengthening and Retrofitting of Existing Structures.

Dr. Lei Li
Dr. Jiantao Wang
Dr. Yixin Zhang
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. Buildings is an international peer-reviewed open access monthly 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 2600 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

  • ultra-high-performance concrete
  • seawater sea‒sand concrete
  • low-carbon
  • eco-friendly
  • AI-based
  • structural evaluation
  • existing structures

Published Papers (2 papers)

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Research

18 pages, 2022 KiB  
Article
Influences of the Decomposition Atmosphere and Heating Rate on the Pyrolysis Behaviors of Resin Sand
by Qingwei Xu, Yaping Zhu, Kaili Xu, Bingjun Li and Nan Su
Buildings 2024, 14(5), 1234; https://0-doi-org.brum.beds.ac.uk/10.3390/buildings14051234 - 26 Apr 2024
Viewed by 253
Abstract
The pouring of sand casting is accompanied by severe heat conduction, and there is an urgent need to investigate the pyrolysis properties of foundry sand. The main purpose of this study was to investigate the pyrolysis behaviors of resin sand, including precoated sand [...] Read more.
The pouring of sand casting is accompanied by severe heat conduction, and there is an urgent need to investigate the pyrolysis properties of foundry sand. The main purpose of this study was to investigate the pyrolysis behaviors of resin sand, including precoated sand (PCS), hot box sand (HBS), and warm box sand (WBS), at heating rates of 20 °C/min, 30 °C/min, and 40 °C/min in nitrogen and air atmospheres. The mass loss of the resin sand was monitored continuously with a simultaneous thermal analyzer, and the kinetic parameters of the resin sand were calculated based on the Coats–Redfern method and thermal data. The average mass loss of the resin sand during pyrolysis was 3.03%, which was much smaller than that of the other sands. The volatile release characteristic index of resin sand could not be calculated based on this concept. To solve this issue, the term Tstv/mloss was established, and its value was determined. With increasing heating rates from 20 °C/min to 30 °C/min and from 30 °C/min to 40 °C/min, the mass losses of the resin sand increased by 0.79% and 0.64%, respectively, and the volatile release characteristic indices of the resin sand increased by 3.8 × 10−10 and 1.06 × 10−9, respectively. In addition, the mass losses and volatile release characteristic indices of resin sand in an air atmosphere were greater than those in a nitrogen atmosphere. With increasing heating rate, the activation energy of the resin sand decreased in a nitrogen atmosphere. The findings concerning the thermal decomposition behaviors of resin sand provided a theoretical basis for the pouring step of the sand casting process. Full article
(This article belongs to the Special Issue Emerging Techniques in Concrete Materials and Structures: Experiments, Theories and Applications)
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28 pages, 10370 KiB  
Article
Bond Strength of Reinforcing Steel Bars in Self-Consolidating Concrete
by Micheal Asaad and George Morcous
Buildings 2023, 13(12), 3009; https://0-doi-org.brum.beds.ac.uk/10.3390/buildings13123009 - 01 Dec 2023
Viewed by 753
Abstract
This paper presents an experimental investigation of the bond strength of reinforcing steel bars in tension in self-consolidating concrete (SCC). The effects of the reinforcing bar’s location, orientation, size, and coating on the bond strength with SCC were studied and compared to those [...] Read more.
This paper presents an experimental investigation of the bond strength of reinforcing steel bars in tension in self-consolidating concrete (SCC). The effects of the reinforcing bar’s location, orientation, size, and coating on the bond strength with SCC were studied and compared to those with conventionally vibrated concrete (CVC). Several SCC mixtures were developed to cover a wide range of applications/components and material types. The fresh properties of the SCC mixtures were determined to evaluate their filling ability, passing ability and stability. Two hundred and thirty-four pull-out tests of rebars embedded in cubes, wall panels and slabs were conducted. Almost half of the tests were conducted to evaluate the bond with SCC and the other half with CVC. Load–slippage relationships were measured for each test. Pull-out test results were analyzed, and the bond strength was reported in two values: critical strength, which corresponds to slippage of 0.01 in. *0.25 mm); and ultimate strength, which corresponds to the maximum load. The critical strength of SCC and CVC were compared against the ACI 318-19 provisions and comparisons between the ultimate strength of SCC and CVC were conducted. The comparisons indicated that SCC has lower bond strength with vertical rebars than CVC, and a 1.3 development length modification factor is recommended. A similar conclusion applies to epoxy-coated and large diameter rebars. Also, SCC with high slump flow has shown a less top-bar effect than that of CVC. Full article
(This article belongs to the Special Issue Emerging Techniques in Concrete Materials and Structures: Experiments, Theories and Applications)
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