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Recent Advances in Construction and Demolition Waste Recycling

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 January 2024) | Viewed by 1570

Special Issue Editors


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Guest Editor
c5Lab - Sustainable Construction Materials Association, Edifício Central Park, Rua Central Park 6, 2795-242 Linda-a-Velha, Portugal
Interests: recycled aggregates; mortar; eco-mortar; construction and demolition waste; sustainability
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Guest Editor
National Laboratory for Civil Engineering (LNEC), Avenida do Brasil 101, 1700-066 Lisboa, Portugal
Interests: renders and plasters; sustainable construction; construction for health; durability of construction; heritage conservation
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
National Laboratory for Civil Engineering, Avenida do Brasil 101,1700-066 Lisboa, Portugal
Interests: CDW processing; recycled aggregates; concrete manufacture; reuse building materials; circular economy; environmental impacts

Special Issue Information

Dear Colleagues,

Construction and demolition waste (CDW) are produced in construction and demolition activities of buildings, infrastructures and roads, including their maintenance or rehabilitation. CDW includes a great variety of materials such as concrete, mortar, gypsum, stone, sand, soil, glass, wood, plastics and metals, among others.

CDW represent a third of the total waste produced in the European Union. It is urgent to reduce the amount of CDW generated by improving construction designs, reducing refurbishment actions and incrementing reuse of some construction materials before demolition.

The incorporation of CDW in the construction sector or others avoiding landfill must increase in a short time. Buildings and infrastructures at the end of life should be seen as sources of building materials instead of wastes to be discarded. For that, it is necessary to source materials from CDW in the development of new products instead of using natural resources. This replacement allows not only to decrease the amount of CDW sent to landfills but also the reduction in natural resources extraction.

To validate applications of CDW, it is mandatory to deeply investigate the innovation of several alternatives, namely technical, environmental and economic aspects. CDW use should reduce the environmental impacts of new products when compared with products that already exist. Environmental impacts associated with CDW should be assessed, validating their use.

This Special Issue aims to contribute with innovative solutions to reduce and recycle CDW, avoiding landfill and all the associated environmental impacts.

This Special Issue will publish high-quality, original research papers, in the overlapping fields of:
  • Efficient construction and reconstruction that avoid construction and demolition waste;
  • New recycling methods or selective demolition processes;
  • Policies and standards of building ecodesign and CDW treatment;
  • Practices of CDW collection and use;
  • Incorporation of construction and demolition waste as raw materials for the development of new products;
  • Environment and economic impacts assessment associated with waste management, construction and demolition materials and new products with CDW incorporation.

Dr. Catarina Correia de Araújo Brazão Farinha
Dr. Maria do Rosário Veiga
Dr. Isabel Milagre Martins
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

  • construction and demolition waste
  • reduce
  • recycling
  • landfill avoidance
  • construction materials
  • efficient construction design
  • demolition design
  • sustainability
  • recycled aggregates
  • rubble

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Published Papers (1 paper)

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Research

19 pages, 2398 KiB  
Article
Pathway to Carbon Neutrality in the Cement Industry: CO2 Uptake by Recycled Aggregates from Construction and Demolition Waste
by David Bastos, Catarina Brazão Farinha, Cinthia Maia Pederneiras, Rosário Veiga, José Alexandre Bogas, Ricardo Infante Gomes and António Santos Silva
Appl. Sci. 2024, 14(12), 5224; https://doi.org/10.3390/app14125224 - 16 Jun 2024
Cited by 1 | Viewed by 713
Abstract
Cementitious materials can capture CO2 through carbonation reaction during their service life and post-demolition. Indeed, construction and demolition waste (CDW) still have some potential for carbonation as they contain concrete and cement-based mortars. This research consists of an experimental programme to evaluate [...] Read more.
Cementitious materials can capture CO2 through carbonation reaction during their service life and post-demolition. Indeed, construction and demolition waste (CDW) still have some potential for carbonation as they contain concrete and cement-based mortars. This research consists of an experimental programme to evaluate the CO2 capture of recycling aggregates (RAs) from CDW. Two types of CDW were studied, namely mixed recycled aggregates (MRAs) and recycled concrete aggregates (RCAs). The recycled aggregates were submitted to forced and accelerated carbonation at 23 °C, 60% relative humidity and 25% of CO2 concentration. This study contributes to the existing literature by investigating more realistic RA sources that have already absorbed atmospheric CO2 during their service life. From the experimental campaign, the results show that RCAs have higher carbonation potential when compared to MRAs due to the higher cementitious material content (Rc) and to the degree of natural carbonation. The recycled aggregates’ maximum CO2 capture was assessed by thermogravimetric analysis (TGA) at different CO2 exposure times. It was verified that the maximum CO2 capture, respectively, for MRAs and RCAs, occurred after 5 h and 12 h of exposition. In short, CDW captured from 5 wt.% to 35 wt.% of CO2 per tonne of cement paste, which corresponds to 0.6% to 4.1% per tonne of aggregate. It was concluded that the carbonation process of CDW has the potential to sequester from 123 kg to 225 kg of CO2 per tonne of cement paste for MRAs and 52 up to 491 kg of CO2 per tonne of cement paste for RCAs. Full article
(This article belongs to the Special Issue Recent Advances in Construction and Demolition Waste Recycling)
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