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Buildings
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Sustainable Approaches to Building Repair
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Sustainable Approaches to Building Repair

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

Deadline for manuscript submissions: 31 July 2024 | Viewed by 1617

Special Issue Editor

Dr. Bo Pang

E-Mail Website
Guest Editor
Department of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China
Interests: super ductile repair materials; molecular design and bionic intelligent manufacturing; self-sensing building materials; multifunctional materials; low-carbon materials

Special Issue Information

Dear Colleagues,

Concrete structures serve as the backbone of transportation infrastructure, supporting the construction of modern, high-quality, three-dimensional transportation networks and facilitating a coordinated development in western and coastal regions. With the rapid development of the global economy, many concrete infrastructure projects built in the 1980s, 1990s, and even in the early 21st century are facing deteriorating safety and durability due to the coupling effects of natural and human factors. This poses threats and challenges to national safety and production, necessitating urgent repair and reinforcement.

Cement concrete materials suffer from drawbacks such as brittleness, low tensile strength, poor bonding, and insufficient durability, making it difficult to meet the repair demands of high-quality building structures. Faced with the reality of deteriorating performances in a large number of existing structures, there is an urgent need to overcome the core technical bottlenecks in the field of repair materials and improve the performance of concrete repair materials.

In this Special Issue, we hope to collect papers that promote various disruptive technologies in building materials, covering multiple topics related to material design and preparation, structural reinforcement and life extension, and innovative approaches for monitoring building health. Additionally, this Special Issue aims to address the application of repair and renovation techniques for innovative buildings.

The aim of this Special Issue is to explore experimental, numerical, analytical, environmental, and economic tools that can help to overcome the barriers in the field of building repair, detection, and reinforcement.

Dr. Bo Pang
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. 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

  • repair materials
  • restoration
  • remodelling
  • polymer
  • hydrophobic
  • painting
  • flooring
  • carpentry
  • waterproofing
  • masonry

Published Papers (3 papers)

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Research

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23 pages, 14022 KiB  
Article
Effect of High Temperatures on Mechanical and Shielding Properties of Lead–Zinc Tailings Concrete for Radiation Protection
by Minghui Wang, Zhenfu Chen, Qiuwang Tao, Yan’e Yang, Liping Xie, Dan Wu, Dan Jin and Lincheng Luo
Buildings 2024, 14(4), 1104; https://doi.org/10.3390/buildings14041104 - 15 Apr 2024
Viewed by 317
Abstract
Due to the high prices, the popularity of radiation shielding concrete (RSC) has been greatly limited. To solve this, this research reused the lead–zinc tailings (LZT) as a fine aggregate replacement ranging from 0% to 60% for the RSC. The results revealed that [...] Read more.
Due to the high prices, the popularity of radiation shielding concrete (RSC) has been greatly limited. To solve this, this research reused the lead–zinc tailings (LZT) as a fine aggregate replacement ranging from 0% to 60% for the RSC. The results revealed that the RSC containing 30% LZT presented better workability and achieved 95.84% of the compressive strength and 98.49% of the linear attenuation coefficient of the RSC, and reached the highest splitting tensile strength values, which increased by 4.43%. Meanwhile, after the heat treatments, there were favorable correlations between the relative velocity and relative strength, as well as between the damage index and the relative linear attenuation coefficient, which could accurately reflect the degradation of not only the mechanical but also the shielding properties. Considering the temperature and shielding thickness, the reuse of LZT can bring considerable economic and environmental benefits. Full article
(This article belongs to the Special Issue Sustainable Approaches to Building Repair)
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19 pages, 12041 KiB  
Article
Comparative Study of the Performance of Underwater Concrete between Anionic and Nonionic Anti-Washout Admixtures
by Xiaoyun Song, Heping Zheng, Lei Xu, Tingting Xu and Qiuyu Li
Buildings 2024, 14(3), 817; https://doi.org/10.3390/buildings14030817 - 17 Mar 2024
Viewed by 484
Abstract
An investigation was carried out to study the influence of two types of anti-washout admixtures (AWAs) on the performance of underwater concrete, specifically, workability and washout resistance. The tested AWAs were hydroxypropyl methylcellulose (HPMC) and polyacrylamide (PAM) as nonionic AWAs and carboxymethyl starch [...] Read more.
An investigation was carried out to study the influence of two types of anti-washout admixtures (AWAs) on the performance of underwater concrete, specifically, workability and washout resistance. The tested AWAs were hydroxypropyl methylcellulose (HPMC) and polyacrylamide (PAM) as nonionic AWAs and carboxymethyl starch (CMS) and polyanionic cellulose (PAC) as anionic AWAs. Rheological properties (slump and slump flow), washout resistance, and compressive strength were measured to evaluate the properties of the fresh and hardened concrete. The results indicate that anionic AWAs are more effective at improving workability and strength than nonionic AWAs in anti-washout underwater concrete. When the nonionic AWA dosage exceeded 0.3% (W/C = 0.45), the fluidity and air content were negatively impacted. Additionally, nonionic AWAs more readily alter the morphological structure of cement paste, affecting cement particle hydration and underwater concrete properties. Regarding the mechanical properties, compared with those of concrete without AWAs and with nonionic AWAs, the 28-day compressive strength of concrete with anionic AWAs reached 37 MPa, an increase of 151% and 131%, respectively. Compared with nonionic AWAs, concrete with anionic AWAs is more stable. Full article
(This article belongs to the Special Issue Sustainable Approaches to Building Repair)
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Review

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28 pages, 19045 KiB  
Review
A Review of Waterborne Polymer–Cementitious Composite Repair Materials for Application in Saline Soil Environments: Properties and Progress
by Yan’e Yang, Bo Pang, Yunsheng Zhang, Minghui Wang, Gaixia Miao and Aoxiang Zhou
Buildings 2024, 14(3), 848; https://doi.org/10.3390/buildings14030848 - 21 Mar 2024
Viewed by 473
Abstract
The properties of a large number of concrete infrastructures in China are deteriorating year by year, raising the need for repairing and strengthening these infrastructures. By introducing waterborne polymers into a cement concrete system, brittle cracks and easy bonding performance defects of concrete [...] Read more.
The properties of a large number of concrete infrastructures in China are deteriorating year by year, raising the need for repairing and strengthening these infrastructures. By introducing waterborne polymers into a cement concrete system, brittle cracks and easy bonding performance defects of concrete can be compensated for to form a long-life, semi rigid, waterborne polymer-modified cementitious repair material with a promising development prospect. This paper investigates the modification effect of polymer emulsions on ordinary cement mortar. Our research mainly focused on the physical and mechanical properties, durability, microstructure and application status of waterborne polymer-modified cementitious composites. Literature studies show that with the increase in waterborne polymer content (0 wt%~20 wt%), the performance of cement mortar significantly improves, which in turn expands its application range. Compared with ordinary cement mortar, the introduction of waterborne polymers blocks some of the pores in the cement to a certain extent, thus improving its permeability, freeze–thaw resistance and durability. Finally, this paper describes the application of waterborne polymer–cementitious composites in western saline soil environments, as well as discusses the prospects of their development. Full article
(This article belongs to the Special Issue Sustainable Approaches to Building Repair)
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