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Buildings
Special Issues
Modified Cementitious Materials and Concretes: Performance and Environmentally Friendly Aspects
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Modified Cementitious Materials and Concretes: Performance and Environmentally Friendly Aspects

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

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 2707

Special Issue Editors

Dr. Wislei Riuper Osório

E-Mail Website
Guest Editor
1. Faculdade de Tecnologia, FT, Universidade Estadual de Campinas/UNICAMP, Campus I, Limeira 13484-350, Brazil 2. Faculdade de Ciências Aplicadas, FCA, Centro de Manufatura de Materiais Avançados (CPMMA), UNICAMP, Campus II, Limeira 13484-332, Brazil
Interests: mechanical properties; corrosion resistance; aluminum alloys; compounds; lightweight aspects; biomaterials
Special Issues, Collections and Topics in MDPI journals
Dr. Rosa Cristina Cecche Lintz

E-Mail Website
Guest Editor
Faculdade de Tecnologia (FT), Universidade Estadual de Campinas (UNICAMP), Limeira 13484-332, SP, Brazil
Interests: civil materials; alternative materials for construction; self-compacting concretes; high-strength self compacting concretes
Dr. Gisleiva Cristina Dos Santos Ferreira

E-Mail Website
Guest Editor
Faculdade de Tecnologia (FT), Universidade Estadual de Campinas (UNICAMP), Limeira 13484-332, SP, Brazil
Interests: mortar and mechanical behavior; cementitious materials; waste and residue particles into cement and mortars

Special Issue Information

Dear Colleagues,

Cementitious materials, such as concrete and paste, are widely used in distinctive civil applications. However, there are few studies linking their competitive and cooperative properties, especially when residue contents are utilized. Distinct and innovative methods and contents are needed to replace portions of cementitious materials or concrete. It is well known that these inclusion particles and contents have important roles in terms of both mechanical and environmentally friendly aspects. It is also recognized that the tradeoff between fresh state and hardened properties constitutes a great challenge for adequate application. This Special Issue invites a wide set of manuscripts and investigations. This can include the characterization of distinctive and modified cementitious materials (including pastes and concretes) and their resulting mechanical behavior and ESG (environmental, social and governance) aspects. Thus, researchers are invited to submit original investigations involving a wide range of materials, covering traditional concretes, pastes, and various distinctive cementitious composites.

Dr. Wislei Riuper Osório
Dr. Rosa Cristina Cecche Lintz
Dr. Gisleiva Cristina Dos Santos Ferreira
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 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 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

  • mechanical behavior
  • fresh and hardened state properties
  • modified concretes
  • environmental cement paste
  • structural concrete
  • cementitious characterization
  • interface transition zone

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Published Papers (2 papers)

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Research

15 pages, 5442 KiB  
Article
Compensating for Concrete Shrinkage with High-Calcium Fly Ash
by Yurii Barabanshchikov, Vasilia Krotova and Kseniia Usanova
Buildings 2024, 14(10), 3167; https://doi.org/10.3390/buildings14103167 - 5 Oct 2024
Cited by 1 | Viewed by 928
Abstract
Shrinkage of concrete during hardening is a serious problem in attempts to maintain the integrity of concrete structures. One of the methods of combating shrinkage is compensating for it using an expansive agent. The purpose of this work is to develop and study [...] Read more.
Shrinkage of concrete during hardening is a serious problem in attempts to maintain the integrity of concrete structures. One of the methods of combating shrinkage is compensating for it using an expansive agent. The purpose of this work is to develop and study an expanding agent to concrete, including high-calcium fly ash and calcium nitrate as an expansion activator. The content of Ca(NO3)2 can be used to regulate the degree of expansion of the additive itself during hydration and, accordingly, to control shrinkage, thus obtaining shrinkage-free or expanding concrete. Shrinkage–expansion deformations of concrete can also be regulated by the amount of expanding additive replacing part of the cement. With the Ca(NO3)2 content of fly ash being 10% or more, concrete experiences expansion in the initial stages of hardening. The transition of deformation through 0 to the shrinkage region occurs depending on the composition and content of the additive after 8–15 days of hardening. It has been established that replacing cement with pure fly ash with a curing period of 90 days or more has virtually no effect on the strength of concrete, either in bending or in compression. The use of an expanding additive containing 5–15% Ca(NO3)2 reduces the strength of concrete by an average of 9%, despite the fact that calcium nitrate is a hardening accelerator. Full article
(This article belongs to the Special Issue Modified Cementitious Materials and Concretes: Performance and Environmentally Friendly Aspects)
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19 pages, 9632 KiB  
Article
Long-Term Performance of Mortars with Combined Incorporation of Ladle Furnace Slag and Metakaolin
by Tayná Silva, Everton Souza, Eduardo Mariano, Gisleiva Ferreira and Wislei R. Osório
Buildings 2024, 14(9), 2762; https://doi.org/10.3390/buildings14092762 - 3 Sep 2024
Cited by 1 | Viewed by 1346
Abstract
Ladle furnace slag (LFS) is used as a supplementary cementitious material (SCM) due to its high calcium oxide (CaO) content. Its binding properties are enhanced in the presence of siliceous materials, such as metakaolin (MK), forming a ternary mixture that can directly replace [...] Read more.
Ladle furnace slag (LFS) is used as a supplementary cementitious material (SCM) due to its high calcium oxide (CaO) content. Its binding properties are enhanced in the presence of siliceous materials, such as metakaolin (MK), forming a ternary mixture that can directly replace ordinary Portland cement (OPC). However, despite this blend having already been evaluated in alkali-activated mixtures, knowledge about this mixture in situations of direct replacement of OPC by slag is still lacking. This study evaluates the synergistic effects of combining LFS and MK in cementitious mortars. Due to an insufficient hydration reaction observed in the short term, this study focuses on assessing the long-term performance of these mortars. Both the fresh and hardened states at 28 and 180 days are evaluated, and the resulting microstructural characteristics and constituent phases are also examined. After 180 days of curing, the mortar with MK exhibits superior binding activity compared to the results at 28 days. Although the nominal resistance does not show a clear advantage with the application of MK, a significant reduction in the porosity of the mortar is observed. Microstructural analysis indicates that the addition of MK increases the hydration compounds when mixed with LFS. Importantly, the sample containing MK and LFS showed a 42% reduction in cement consumption, highlighting the potential for resource efficiency. Thus, this study contributes to promoting a circular economy between the steelmaking and civil construction sectors. Full article
(This article belongs to the Special Issue Modified Cementitious Materials and Concretes: Performance and Environmentally Friendly Aspects)
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