Special Issue "The Effects of High Temperature on the Mechanical Properties of Concrete"

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Construction and Building Materials".

Deadline for manuscript submissions: 15 January 2022.

Special Issue Editor

Dr. Francisco Javier Baeza
E-Mail Website
Guest Editor
Civil Engineering Department, University of Alicante, Ctra. San Vicente s/n, San Vicente del Raspeig 03690, Spain
Interests: structural engineering; cement composites; dynamic behavior; masonry structures

Special Issue Information

Dear Colleagues,

Structural concrete became an essential construction material during the second half of the 19th century. Reportedly, one of several reasons for this was its good behavior when exposed to the high temperatures that develop in accidental fire situations, especially when compared to other construction materials of that age. Concrete arguably exhibits better fire performance than structural steel, and recent history provides some notable though dramatic examples for this assertion: the fire in Windsor Tower (Madrid, 2005) and the fire in Grenfell Tower (London, 2017). The effects of high-temperature exposure on the chemical composition and mechanical behavior of conventional concrete are well known. However, the ever-changing world of structural engineering challenges the performance of traditional materials and encourages the development of new solutions in concrete engineering, whose fire performance needs to be addressed. This Special Issue on "The Effects of High Temperature on the Mechanical Properties of Concrete" aims to present the latest findings in the following materials exposed to elevated temperatures: fiber-reinforced concrete; ultra-high-performance concrete; self-compacting concrete; special aggregate concrete (e.g., recycled, lightweight, non-conventional, etc.); advanced cement materials with or without nano-additions. Other topics of interest may include dynamic properties, predictive models, numerical modelling, and non-destructive testing for the evaluation of fire-induced damage.

Dr. Francisco Javier Baeza
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 papers will be 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. Materials 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 2000 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

  • fire engineering
  • high-temperature exposure
  • concrete
  • cement materials
  • mechanical properties
  • dynamic behavior
  • bond strength
  • ultra-high-performance concrete
  • recycled waste materials

Published Papers (2 papers)

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Research

Open AccessArticle
Influence of High Temperature on the Fracture Properties of Polyolefin Fibre Reinforced Concrete
Materials 2021, 14(3), 601; https://doi.org/10.3390/ma14030601 - 28 Jan 2021
Cited by 1 | Viewed by 249
Abstract
Concrete has become the most common construction material, showing, among other advantages, good behaviour when subjected to high temperatures. Nevertheless, concrete is usually reinforced with elements of other materials such as steel in the form of rebars or fibres. Thus, the behaviour under [...] Read more.
Concrete has become the most common construction material, showing, among other advantages, good behaviour when subjected to high temperatures. Nevertheless, concrete is usually reinforced with elements of other materials such as steel in the form of rebars or fibres. Thus, the behaviour under high temperatures of these other materials can be critical for structural elements. In addition, concrete spalling occurs when concrete is subjected to high temperature due to internal pressures. Micro polypropylene fibres (PP) have shown to be effective for reducing such spalling, although this type of fibres barely improves any of the mechanical properties of the element. Hence, a combination of PP with steel rebars or fibres can be effective for the structural design of elements exposed to high temperatures. New polyolefin fibres (PF) have become an alternative to steel fibres. PF meet the requirements of the standards to consider the contributions of the fibres in the structural design. However, there is a lack of evidence about the behaviour of PF and elements made of polyolefin fibre reinforced concrete (PFRC) subjected to high temperatures. Given that these polymer fibres would be melt above 250 °C, the behaviour in the intermediate temperatures was assessed in this study. Uni-axial tests on individual fibres and three-point bending tests of PFRC specimens were performed. The results have shown that the residual load-bearing capacity of the material is gradually lost up to 200 °C, though the PFRC showed structural performance up to 185 °C. Full article
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Open AccessArticle
Residual Compressive Strength of Recycled Aggregate Concretes after High Temperature Exposure
Materials 2020, 13(8), 1981; https://doi.org/10.3390/ma13081981 - 23 Apr 2020
Cited by 5 | Viewed by 751
Abstract
Sustainability requirements are gaining importance in the construction industry, which needs to take specific measures in the design and construction of concrete structures. The use of recycled aggregates in concrete may be of special interest. Recycling a construction waste will close the life [...] Read more.
Sustainability requirements are gaining importance in the construction industry, which needs to take specific measures in the design and construction of concrete structures. The use of recycled aggregates in concrete may be of special interest. Recycling a construction waste will close the life cycle of the original materials (e.g., concrete). Thus, environmental benefits would come from the lower waste generation, and from a lower necessity of raw materials for new structures. The current Spanish code for structural concrete considers the use of recycled aggregates in replacement rates up to 20% by aggregate mass, assimilating their properties with those of concretes without aggregate replacement. Higher substitution percentages would require further testing. In this work, substitution of coarse aggregate for recycled aggregates (with replacement percentages of 25%, 50% and 100%) has been studied, and the concrete’s residual properties after exposure to high temperatures (between 350 °C and 850 °C) have been assessed. Compressive strength and capillary water absorption tests were made after heating, and the experiments showed higher residual strength in concretes with the greatest content of recycled aggregates. However, a statistical analysis made with additional data available in the literature seemed to predict otherwise, and the recycled aggregate replacement would have a negative effect on the residual strength. Full article
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