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Sustainable Concrete Materials for a Clean Energy Management

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Sustainable Materials".

Deadline for manuscript submissions: closed (15 November 2022) | Viewed by 5612

Special Issue Editor


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Guest Editor
Department of Civil, Environmental and Architectural Engineering ICEA, University of Padova, 35122 Padova, Italy
Interests: structural analysis; construction; finite element analysis; finite element modeling; structural dynamics; civil engineering; materials construction; materials building; materials earthquake engineering; mechanics of materials

Special Issue Information

Dear Colleagues,

In recent decades, concrete employment has considerably changed. From an exclusively cheap construction material, concrete is nowadays used in very challenging scenarios such as energy storage systems or nuclear shielding and nuclear waste management. Thanks to the progressive evolution of the methodological approach, including the enrichment of the mix design with fibres, nanoparticles, recycled aggregates, heavy-weight aggregates, etc., the sustainability of concrete production and concrete physical characteristics can nowadays be mostly ensured. Specifically, strength, thermal capacity, density, electrical conductivity, shielding properties and durability can be addressed more accurately then in the past, together with the environmental impact related to concrete’s life-cycle. In parallel to this, computational mechanics in the field of constitutive modelling of cementitious materials allow robust simulations in the exercise scenario up to brittle failure. Analyses can be conducted at the homogeneous scale, as well as at the meso- up to microscale, to evaluate the interactions between the single components and single phases of the composite. In relation to specific applications, coupled numerical formulations can be pursued, which can better account for the multiphysics of the process. The aim of this Special Issue is to provide state-of-the-art of concrete applications in the sustainable energy field, from the viewpoints of both experimental and computational studies. Contributions relative to case studies or benchmarks that can demonstrate the versatility of this material in energy-related applications and provide a novel methodology to address the specific issues are welcomed.

Dr. Gianluca Mazzucco
Guest Editor

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Keywords

  • concrete
  • energy storage
  • nuclear shielding
  • mesoscale
  • microscale
  • multiphase media
  • environmental impact

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Published Papers (2 papers)

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18 pages, 5201 KiB  
Article
Grain Density-Based Approaches to Predict the Mechanical, Thermal and Hygric Properties of Carbon-Negative Aggregate Concretes
by Imen Rahmouni, Geoffrey Promis, Omar Douzane and Frédéric Rosquoet
Sustainability 2021, 13(15), 8194; https://doi.org/10.3390/su13158194 - 22 Jul 2021
Viewed by 1679
Abstract
The suitability of replacing mineral aggregate with carbon-negative ones mainly depends on the properties of the aggregates produced from waste recycling, reducing CO2 emissions. This study aimed to investigate the predictive approaches adapted to concrete mixtures where mineral aggregates are replaced by [...] Read more.
The suitability of replacing mineral aggregate with carbon-negative ones mainly depends on the properties of the aggregates produced from waste recycling, reducing CO2 emissions. This study aimed to investigate the predictive approaches adapted to concrete mixtures where mineral aggregates are replaced by carbonated aggregates (at different substitution rates from 25 to 100% with aggregates of various origins). A large experimental campaign of aggregates and carbonated aggregate concretes highlighted their physical, mechanical, thermal and hygric properties and the influence of density and porosity of aggregates on these properties. Thanks to these results, predictive approaches were formulated to establish the main engineering properties: mechanical compressive strength, elasticity modulus, thermal conductivity, thermal mass capacity and hygric diffusivity. These empirical and analytical models were based on the density of aggregates. Maximum deviations of around 15% were obtained with the experimental data, highlighting the influence of grain density on carbonated aggregate concretes. These models could then be used to optimize the formulation of concrete mixtures with carbonated aggregates, replacing international standards adapted to mineral aggregates. Full article
(This article belongs to the Special Issue Sustainable Concrete Materials for a Clean Energy Management)
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25 pages, 5754 KiB  
Case Report
From Buildings’ End of Life to Aggregate Recycling under a Circular Economic Perspective: A Comparative Life Cycle Assessment Case Study
by Ambroise Lachat, Konstantinos Mantalovas, Tiffany Desbois, Oumaya Yazoghli-Marzouk, Anne-Sophie Colas, Gaetano Di Mino and Adélaïde Feraille
Sustainability 2021, 13(17), 9625; https://doi.org/10.3390/su13179625 - 26 Aug 2021
Cited by 15 | Viewed by 3287
Abstract
The demolition of buildings, apart from being energy intensive and disruptive, inevitably produces construction and demolition waste (C&Dw). Unfortunately, even today, the majority of this waste ends up underexploited and not considered as valuable resources to be re-circulated into a closed/open loop process [...] Read more.
The demolition of buildings, apart from being energy intensive and disruptive, inevitably produces construction and demolition waste (C&Dw). Unfortunately, even today, the majority of this waste ends up underexploited and not considered as valuable resources to be re-circulated into a closed/open loop process under the umbrella of circular economy (CE). Considering the amount of virgin aggregates needed in civil engineering applications, C&Dw can act as sustainable catalyst towards the preservation of natural resources and the shift towards a CE. This study completes current research by presenting a life cycle inventory compilation and life cycle assessment case study of two buildings in France. The quantification of the end-of-life environmental impacts of the two buildings and subsequently the environmental impacts of recycled aggregates production from C&Dw was realized using the framework of life cycle assessment (LCA). The results indicate that the transport of waste, its treatment, and especially asbestos’ treatment are the most impactful phases. For example, in the case study of the first building, transport and treatment of waste reached 35% of the total impact for global warming. Careful, proactive, and strategic treatment, geolocation, and transport planning is recommended for the involved stakeholders and decision makers in order to ensure minimal sustainability implications during the implementation of CE approaches for C&Dw. Full article
(This article belongs to the Special Issue Sustainable Concrete Materials for a Clean Energy Management)
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