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Applied Sciences
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Structural Behaviour of Concrete Waste Materials
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Structural Behaviour of Concrete Waste Materials

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

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 7565

Special Issue Editors

Prof. Dr. Jorge de Brito

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Guest Editor
Department of Civil Engineering, Architecture and Georresources, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
Interests: CIB—International Council for Research and Innovation in Building and Construction; durability of building elements, maintenance of buildings; rehabilitation of buildings; building life cycle assessment
Special Issues, Collections and Topics in MDPI journals
Dr. João Pacheco

E-Mail Website
Guest Editor
Sustainable Construction Materials Association, Edifício Central Park, Rua Central Park 6, 2795-242 Linda-a-Velha, Portugal
Interests: material characterization; finite element analysis;structural dynamics; structural analysis; construction engineering; construction earthquake engineering; civil engineering materials; construction materials; building materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Reinforced concrete produced with waste materials is an environmentally friendly alternative to conventional reinforced concrete that promotes circular economy at a large scale due to the enormous worldwide demand for concrete. Moreover, the concrete industry is interested in ecological solutions due to the societal perception of concrete as a material with a large environmental toll. At the same time, the acceptance of alternative reinforced concrete products requires that their structural behavior is studied so that public safety is ensured.

The structural behaviour of reinforced concrete made with waste materials (as an alternative to raw materials used in the production of concrete, or as an alternative to reinforcement) may differ from that of conventional reinforced concrete. The aim of this Special Issue of Applied Sciences is to provide researchers and practitioners with state-of-the-art knowledge on this issue. The waste may be used for different purposes. The scope includes the replacement of binder, water, fillers, admixtures, aggregates, or reinforcement. The following is a non-exhaustive list of topics covered:

  • Structural testing of reinforced concrete made with waste materials;
  • Characterization of recycled fibers and their influence on structural behavior;
  • Stress–strain modeling of concrete made with waste materials;
  • Numerical modeling of the structural behavior of reinforced concrete made with waste materials;
  • Resistance models for reinforced concrete made with waste materials;
  • Influence of waste materials (e.g., sea or recycled water, alternative binders) on the durability of reinforced concrete;
  • Strategies to mitigate the detrimental influence of waste materials on structural behavior;
  • Structural design of reinforced concrete made with waste materials.

Original studies and reviews with different levels of maturity are welcome, since the state of the art of reinforced concrete made with the incorporation of waste is highly dependent on the specific waste.

Prof. Dr. Jorge de Brito
Dr. João Pacheco
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

  • structural concrete
  • structural reliability
  • sustainable construction
  • mechanical, structural, and durability-related behaviour
  • structural design
  • concrete codes
  • alternative binders
  • recycled aggregates
  • alternative reinforcement
  • industrial wastes

Published Papers (3 papers)

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Research

17 pages, 4405 KiB  
Article
Effects of Freeze-Thaw and Wet-Dry Cycles on Tension Stiffening Behavior of Reinforced RAC Elements
by Caroline Santana Rangel, Marco Pepe, Mayara Amario, Lucas Caon Menegatti, Enzo Martinelli and Romildo Dias Toledo Filho
Appl. Sci. 2021, 11(21), 10063; https://doi.org/10.3390/app112110063 - 27 Oct 2021
Cited by 2 | Viewed by 1411
Abstract
In the last several decades, the growth of Construction and Demolition Waste (CDW) production and the increased consumption of natural resources have led to promoting the use of secondary raw materials for a more sustainable construction. Specifically, the use of Recycled Concrete Aggregate [...] Read more.
In the last several decades, the growth of Construction and Demolition Waste (CDW) production and the increased consumption of natural resources have led to promoting the use of secondary raw materials for a more sustainable construction. Specifically, the use of Recycled Concrete Aggregate (RCA), derived from waste concrete, for the production of Recycled Aggregate Concrete (RAC) has attracted a significant interest both in industry and in academia. However, the use of RAC in field applications still finds some barriers. In this context, the present study investigates experimentally the effects of freeze-thaw and wet-dry cycles on the stress transfer mechanisms of reinforced RAC elements through tension stiffening tests. First of all, the paper presents a detailed analysis of the degradation due to the aging process of RAC with RCAs obtained from different sources. Particularly, the results of tension stiffening tests are analyzed in terms of crack formation and propagation, matrix tensile strength contribution and steel-to-concrete bond. The results highlight that the pre-cracking elastic modulus, the first crack strength as well as the maximum concrete strength are strongly influenced by the presence of the Attached Mortar (AM) in RCA, as the former affects the concrete’s open porosity. Therefore, the amount of AM is identified as the key parameter for the evaluation of durability of reinforced RAC members: a degradation-law is also proposed which correlates the initial concrete open porosity with the damage observed in reinforced RAC elements. Full article
(This article belongs to the Special Issue Structural Behaviour of Concrete Waste Materials)
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18 pages, 5449 KiB  
Article
Effect of Micro-Silica Addition into Electric Arc Furnace Steel Slag Eco-Efficient Concrete
by Ali Aghajanian, Carlos Thomas and Kiachehr Behfarnia
Appl. Sci. 2021, 11(11), 4893; https://doi.org/10.3390/app11114893 - 26 May 2021
Cited by 8 | Viewed by 2419
Abstract
Concrete produced from electric arc furnace steel slag aggregates is one of the items that is highly regarded due to its strength, environmental friendliness and cost-effectiveness. Despite the growing interest in using this type of concrete, there are still doubts about the mix [...] Read more.
Concrete produced from electric arc furnace steel slag aggregates is one of the items that is highly regarded due to its strength, environmental friendliness and cost-effectiveness. Despite the growing interest in using this type of concrete, there are still doubts about the mix proportions and addition effects of electric arc furnace steel slags. In this paper, the performance of replacing natural aggregates by electric arc furnace steel slags aggregate is comprehensively investigated and its effect on mechanical properties is analysed. The relationship between the percentage of replacement of natural aggregate using electric arc furnace steel slags aggregate in two parts of coarse aggregate and fine-grained aggregate and the effect of each of these parts on mechanical properties in concrete is investigated, which may identify the optimal mix proportions of each aggregate that help to improve the strength of the eco efficient concrete using electric arc furnace steel slags. Full article
(This article belongs to the Special Issue Structural Behaviour of Concrete Waste Materials)
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15 pages, 3958 KiB  
Article
Stress–Strain Curve and Carbonation Resistance of Recycled Aggregate Concrete after Using Different RCA Treatment Techniques
by Long Li, Dongxing Xuan and Chi Sun Poon
Appl. Sci. 2021, 11(9), 4283; https://doi.org/10.3390/app11094283 - 09 May 2021
Cited by 12 | Viewed by 2673
Abstract
Five recycled coarse aggregate (RCA) treatment techniques including flow-through carbonation, pressurized carbonation, wet carbonation, nano silica (NS) pre-spraying and combined pressurized carbonation with NS pre-spraying, were utilized to improve the performance of recycled aggregate concrete (RAC). The characteristics of the stress–strain curves of [...] Read more.
Five recycled coarse aggregate (RCA) treatment techniques including flow-through carbonation, pressurized carbonation, wet carbonation, nano silica (NS) pre-spraying and combined pressurized carbonation with NS pre-spraying, were utilized to improve the performance of recycled aggregate concrete (RAC). The characteristics of the stress–strain curves of RACs including peak stress, peak strain, elastic modulus, ultimate strain and toughness were evaluated after using the above RCA treatment techniques. A theoretical model for natural aggregate concrete was used to analyse the stress–strain curve of RAC. Additionally, the carbonation resistance of RAC after using different RCA treatment techniques were investigated. The results showed that the calculated stress–strain curve of RAC based on the theoretical model matched well with the experimental results. Among the three types of carbonation techniques, pressurized carbonation caused the highest improvement in peak stress and elastic modulus of RAC, followed by flow-through carbonation, the last was wet carbonation. The NS pre-spraying method contributed to even higher improvement in peak stress and elastic modulus of RAC than the pressurized carbonation method. The combined pressurized carbonation with NS pre-spraying exhibited the highest enhancement of RAC because both the RCA and the new interface transition zone (ITZ) were improved. The carbonation resistance of RAC was improved after using all the studied RCA treatment techniques. Full article
(This article belongs to the Special Issue Structural Behaviour of Concrete Waste Materials)
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