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Buildings
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High- and Ultra-High Performance Concrete: Properties, Developments and Applications
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High- and Ultra-High Performance Concrete: Properties, Developments 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: 20 May 2024 | Viewed by 2686

Special Issue Editor

Dr. Styliani Papatzani

E-Mail Website
Guest Editor
Department of Surveying and Geoinformatics Engineering, School of Engineering, University of West Attica, 28 Ag. Spyridonos Street, 122 43 Aigaleo, Greece
Interests: nanoparticles; supplementary cementitious materials; cement; special concretes; fibre reinforced polymers; characterization; structural design; heritage
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Engineers and material scientists are pushing the boundaries of science and technology in an effort to build higher and stronger and more sustainable, robust, durable structures, adaptable to a variety of conditions, climate change, heritage compatibility, etc. For this, tailor made cement and concrete mixes are designed, developed, tested and launched in the market or in specific projects. This Special Issue celebrates all the recent advances in the cement and concrete industry with respect to high- and ultra-high performance concrete, its properties, developments and applications. Laboratory studies, industrial studies, case studies on materials, their properties and the structural performance of new or repaired structures and elements are welcome in all related areas; these include pre-fabrication elements; nanomodified, fiber-reinforced, 3D-printed, recycled materials; fabric or polymer concretes and cements; high- and ultra-high strength concretes. Let us make this Special Issue a great celebration of the recent advances in cement and concrete design and innovation. 

Dr. Styliani Papatzani
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

  • pre-fabrication
  • self-consolidating concrete
  • nanomodified concrete/cement
  • fiber-reinforced concrete
  • 3D-printed concrete/cement
  • self-sensing/self-healing concrete
  • recycled aggregate concrete
  • architectural/fair faced concrete
  • high- and ultra-high strength concrete

Published Papers (3 papers)

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Research

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21 pages, 18128 KiB  
Article
Predicting the Compressive Strength of Ultra-High-Performance Concrete Based on Machine Learning Optimized by Meta-Heuristic Algorithm
by Yuanyuan Li, Xinxin Yang, Changyun Ren, Linglin Wang and Xiliang Ning
Buildings 2024, 14(5), 1209; https://doi.org/10.3390/buildings14051209 - 24 Apr 2024
Viewed by 300
Abstract
Ultra-high-performance concrete (UHPC) is a recently developed material which has attracted considerable attention in the field of civil engineering because of its outstanding characteristics. One of the key factors in concrete design is the compressive strength (CS) of UHPC. As one of the [...] Read more.
Ultra-high-performance concrete (UHPC) is a recently developed material which has attracted considerable attention in the field of civil engineering because of its outstanding characteristics. One of the key factors in concrete design is the compressive strength (CS) of UHPC. As one of the most potent tools in artificial intelligence (AI), machine learning (ML) can accurately predict concrete’s mechanical properties. Hyperparameter tuning is crucial in ensuring the prediction model’s reliability. However, it is a complex work. The purpose of this study is to optimize the CS prediction method for UHPC. Three ML methods, random forest (RF), support vector machine (SVM), and k-nearest neighbor (KNN), are selected to predict the CS of UHPC. Among them, the RF model demonstrates superior predictive accuracy, with the testing dataset R2 of 0.8506. In addition, three meta-heuristic optimization algorithms, particle swarm optimization (PSO), beetle antenna search (BAS), and snake optimization (SO), are utilized to optimize the prediction model hyperparameters. The R2 values for the testing dataset of SO-RF, PSO-RF, and BAS-RF are 0.9147, 0.8529, and 0.8607, respectively. The results indicate that SO-RF exhibits the highest predictive performance. Furthermore, the importance of input parameters is evaluated, and the findings prove the feasibility of the SO-RF model. This research enriches the prediction method of the CS of UHPC. Full article
(This article belongs to the Special Issue High- and Ultra-High Performance Concrete: Properties, Developments and Applications)
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13 pages, 6067 KiB  
Article
The Influence of Excitation Method on the Strength of Glass Powder High-Strength Cementitious Materials
by Bixiong Li, Xin Wei, Zhibo Zhang and Bo Peng
Buildings 2024, 14(3), 569; https://doi.org/10.3390/buildings14030569 - 21 Feb 2024
Viewed by 518
Abstract
Recycling economy and the re-utilization of solid waste have become important parts of sustainable development strategy. To improve the utilization rate of waste glass, glass powder high-strength cementitious material (GHSC) was prepared by replacing part of the cement in the cementitious material with [...] Read more.
Recycling economy and the re-utilization of solid waste have become important parts of sustainable development strategy. To improve the utilization rate of waste glass, glass powder high-strength cementitious material (GHSC) was prepared by replacing part of the cement in the cementitious material with ground waste glass powder. Firstly, the effect of glass powder particle size on the flexural and compressive strength of GHSC was investigated by the gray correlation method, and the optimal grinding time was obtained. Additionally, the effect of the magnitude of steam curing temperature and the length of steam curing time on the compressive strength and flexural strength of GHSC was investigated, and the mechanism of the effect of the curing regime on the strength was explored by examination of the microstructure. Finally, to simplify the curing process of GHSC, the effects of Ca(OH)2 and Na2SO4 as excitation agents on the compressive strength and flexural strength of GHSC at different dosing levels were compared. The results showed that glass powder with a particle size of less than 20 μm would improve the compressive strength and flexural strength of the specimen. Steam curing can significantly improve the flexural strength and compressive strength of GHSC specimens. At a steam curing temperature of 90 °C for a duration of three days, the compressive strength and flexural strength of GHSC increased by 76.7% and 98.2%, respectively, compared with the standard curing specimens. Ca(OH)2 and Na2SO4 as excitation agents significantly enhanced the compressive and flexural strengths of GHSC under standard curing conditions. Full article
(This article belongs to the Special Issue High- and Ultra-High Performance Concrete: Properties, Developments and Applications)
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Review

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36 pages, 6845 KiB  
Review
A Comprehensive Review of the Advances, Manufacturing, Properties, Innovations, Environmental Impact and Applications of Ultra-High-Performance Concrete (UHPC)
by Gregor Kravanja, Ahmad Rizwan Mumtaz and Stojan Kravanja
Buildings 2024, 14(2), 382; https://doi.org/10.3390/buildings14020382 - 01 Feb 2024
Cited by 3 | Viewed by 1636
Abstract
The article presents the progress and applications of ultra-high-performance concrete (UHPC), a revolutionary material in modern construction that offers unparalleled strength, durability, and sustainability. The overview includes the historical development of UHPC, covering its production and design aspects, including composition and design methodology. [...] Read more.
The article presents the progress and applications of ultra-high-performance concrete (UHPC), a revolutionary material in modern construction that offers unparalleled strength, durability, and sustainability. The overview includes the historical development of UHPC, covering its production and design aspects, including composition and design methodology. It describes the mechanical properties and durability of UHPC and highlights recent innovations and research breakthroughs. The potential integration of multifunctional properties such as self-heating, self-sensing, self-luminescence and superhydrophobicity, is explored. In addition, advances in nanotechnology related to UHPC are addressed. Beyond the actual material properties, the article presents an environmental impact assessment and a life-cycle cost analysis, providing an insight into the wider implications of using UHPC. To illustrate the environmental aspects, the determination of CO2 emissions is explained using three numerical examples. Finally, various applications of UHPC are presented, focusing on the construction of buildings and bridges. By synthesizing the above-mentioned aspects, this review paper captures the dynamic landscape of UHPC and serves as a valuable resource for researchers and engineers in the field of construction materials. Full article
(This article belongs to the Special Issue High- and Ultra-High Performance Concrete: Properties, Developments and Applications)
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