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Special Issue "Supplementary Cementitious Materials in Concrete"
Deadline for manuscript submissions: 30 April 2020.
Interests: building materials; construction materials; sustainable construction; concrete; reinforced concrete; concrete structures; structural design; high performance concrete
Interests: building materials; concrete technologies; multicomponent materials for sustainable construction; microstructure and durability of cement-based composites; supplementary cementitious materials; high performance materials exposed to combined action of environmental loads and nuclear radiation
The environmental impact of the Portland cement production and the large use of cement-based building materials are a growing concern. The substitution strategy, consisting of the partial replacement of Portland cement with supplementary cementitious materials (SCMs) or the more common application of blended cements, is an effective way to improve the sustainability of the cement and concrete industries. The development of new combustion technologies and the introduction of new materials affect the physical and chemical properties of SCMs, which further results in enhancing some concrete properties (performance strategy).
The forthcoming Special Issue of Materials aims to recognize the current state of knowledge and development in the use of SCMs within the substitution and performance strategies. It is our pleasure to invite you to submit your research article, communication, or review in which the following aspects of SCMs are investigated:
- Measuring the chemical, physical and mineralogical properties of SCMs, before and after hydration;
- Defining the amounts and the types of SCMs in accordance with the desired effects on fresh and hardened concrete performances;
- Designing structural elements made with normal and high-performance concretes containing SCMs;
- Assessing the durability and environmental impact of cement-based materials and structures, when SCMs are used to substitute, or in conjuction with, hydraulic cements.
Prof. Alessandro P. Fantilli
Dr. Daria Jóźwiak-Niedźwiedzka
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 1800 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.
- Material design and optimization of the structure of materials
- Structural performances
- Models of new materials and prediction of their properties
- Manufacturing processes
- Durability and sustainability assessment
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Planned paper 1
Title: Alkali-activated materials from recycling as a mechanically efficient and environmentally sustainable alternative to Portland cement
Authors: Paola Antonaci; Alessandra Formia; Paola Palmero; Jean-Marc C. Tulliani
Email: [email protected]; [email protected]; [email protected]; [email protected]
Abstract: The production of concrete is constantly growing all over the world, on one hand because of the increasing demand for new infrastructures, urban space and public service buildings in emerging countries, on the other because of the need for maintenance, replacement and upgrading of the existing ones in developed nations. Such a growth poses serious sustainability issues, since the production of cement is known to be responsible for approximately 5-10% of the overall anthropogenic CO2 emissions, more than a half of which resulting from the production of clinker. Therefore, the main challenge for the construction sector in next years will be the implementation of proper strategies to reduce the CO2 emissions related to cement and concrete production. In this research, a total substitution strategy was investigated, and novel conglomerate formulations were studied in which the ordinary cement component was entirely replaced by an alkali-activated binder. Specifically, an alumino-silicate mud obtained as a waste product from the granite extraction and processing industry was used as an active raw material. Thanks to an alkali-activation mechanism promoted by a short-duration, low-temperature curing process, such a mineral powder was transformed into an effective binder, allowing to produce dense or cellular samples with very good mechanical characteristics and thermal conductivity properties. These promising results demonstrate that alumino-silicate wastes can be successfully reused in the construction sector, allowing to achieve a twofold goal by simultaneously providing an effective alternative to the use of ordinary cement and to the disposal of the stone mud.
Planned paper 2
Title: Flexural behavior of fiber reinforced alkali activated beams
Authors: Linda Monfardini, Fausto Minelli and Luca Facconi
Abstract: Alkali Activated Concrete (AAC) is an alternative kind of concrete that uses fly ash as a total replacement of Portland cement. Fly ash combined with alkaline solution and cured at high temperature reacts to form a binder. In the experimental program herein described, the plain mixture of AAC was reinforced with either steel or polymeric fibers, resulting in a volume fraction of 0.3%. Five full-scale beams entirely made by AAC, four of which reinforced with fibers; were tested undergoing flexure with the aim to evaluate the structural behaviour and the effect of fibers on the overall response. Companion small specimen were also casted with the double aim to define the mechanical properties and to bridging the gap between material and structural level. Beam deflection, crack patterns and tension stiffening effects are critically discussed. The evolution of the mean crack spacing and the number of developed cracks are also studied and compared with analytical formulas initially meant for ordinary concrete.