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Circular Economy in Construction: Innovations, Challenges, and Sustainable Practices

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

Deadline for manuscript submissions: 31 May 2026 | Viewed by 1848

Special Issue Editors


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Guest Editor
Department of Biosystems Engineering, Universidade de São Paulo, Pirassununga 13635-900, SP, Brazil
Interests: low-carbon building materials; circular economy; use of agro-industrial by-products in construction materials

E-Mail Website
Guest Editor
Department of Biosystems Engineering, Universidade de São Paulo, Pirassununga 13635-900, SP, Brazil
Interests: life cycle assessment (LCA); low-carbon building materials; circular economy

Special Issue Information

Dear Colleagues,

The construction industry is one of the largest global consumers of raw materials and energy, generating significant environmental impacts and waste. In response, the transition to a circular economy (CE) model is essential for reducing resource depletion, minimizing waste, and promoting sustainable and resilient built environments. This Special Issue aims to explore innovative materials, construction techniques, policy frameworks, and business models that contribute to circularity in the construction sector.

This Special Issue will provide an interdisciplinary platform for discussing the latest advancements, challenges, and practical applications of circular economy principles in construction. We welcome contributions that address the following:

  • The development and integration of circular materials and bio-based composites in construction;
  • Waste valorization strategies and the reuse of demolition materials;
  • Digitalization and Industry 4.0 approaches for circular construction;
  • Policy, governance, and regulatory frameworks that foster CE adoption;
  • Socio-economic and life cycle assessments of circular construction models.

By bridging technical, economic, and policy perspectives, this Special Issue will supplement the existing literature by highlighting how circular economy strategies contribute to sustainability, resilience, and carbon footprint reduction in construction. We invite researchers and practitioners to submit high-quality original research, case studies, and review papers.

Prof. Dr. João Adriano Rossignolo
Dr. Gabriela Pitolli Lyra
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. Sustainability 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

  • circular economy in construction
  • sustainable building materials
  • waste valorization in construction
  • construction and demolition waste (CDW) management
  • bio-based and recycled materials
  • life cycle assessment (LCA) in construction
  • digitalization and Industry 4.0 in circular construction
  • regenerative and Net-Zero buildings
  • policy and governance for circular construction
  • carbon footprint reduction in the built environment

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Published Papers (2 papers)

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Research

24 pages, 4153 KB  
Article
Impact of Low CO2 Footprint-Dissolution Treatment of Silica and Potassium-Rich Biomass Ashes on the Compressive Strength of Alkali-Activated Mortars
by Danilo Bordan Istuque, Lourdes Soriano, José Monzó, Maria Victoria Borrachero, Mauro Mitsuuchi Tashima and Jordi Payá
Sustainability 2025, 17(22), 10359; https://doi.org/10.3390/su172210359 - 19 Nov 2025
Abstract
Using almond shell biomass ash (ABA) as a potassium alkaline source and rice husk ash (RHA) as a soluble silica source to produce blast furnace slag (BFS)-based alkali-activated mortars offers a sustainable alternative to commercial activators. However, some thermal treatment is often needed [...] Read more.
Using almond shell biomass ash (ABA) as a potassium alkaline source and rice husk ash (RHA) as a soluble silica source to produce blast furnace slag (BFS)-based alkali-activated mortars offers a sustainable alternative to commercial activators. However, some thermal treatment is often needed to enhance ash dissolution, potentially increasing the CO2 footprint. In this study, we evaluated how a low-CO2-footprint thermal treatment for dissolving ABA, as well as RHA combined with ABA, affects the strength performance of binary (ABA/BFS) and ternary (RHA/ABA/BFS) alkali-activated mortars. This thermal treatment involved mixing the biomasses with hot water (85 °C) in a thermally insulated bottle (TIB). The binary alkali-activated mortar, cured for 7 days in a thermal bath at 65 °C, achieved 58.0 MPa in compressive strength, applying 1-h dissolution of ABA in a TIB. Additionally, the previous dissolution of RHA in conjunction with ABA for ternary alkali-activated mortar, cured also for 7 days in a thermal bath at 65 °C, resulted in mortars with a higher compressive strength, achieving 64.7 MPa. With the prior biomass dissolution method, the binary and ternary alkali-activated mortars cured at room temperature (20 °C) showed compressive strengths of 54.7 and 67.0 MPa after 28 curing days, respectively. Moreover, after 135 curing days, these mortars reached a compressive strength of 61.4 and 71.9 MPa, respectively. The BFS-alkali-activated binders with ABA and ABA plus RHA cut CO2 emissions by 86.8% and 85.7% compared to the OPC-based binder, respectively. Full article
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19 pages, 2169 KB  
Article
The Dynamics of Concrete Recycling in Circular Construction: A System-Dynamics Approach in Sydney, Australia
by Ze Wang, Michael G. H. Bell, Jyotirmoyee Bhattacharjya and Glenn Geers
Sustainability 2025, 17(10), 4282; https://doi.org/10.3390/su17104282 - 8 May 2025
Cited by 1 | Viewed by 1334
Abstract
Concrete demolition waste represents a critical bottleneck in achieving a circular economy for the construction sector. This study develops a system-dynamics model that couples material flows with economic and logistical feedback to quantify how cost structures affect concrete recycling in the Sydney (Australia) [...] Read more.
Concrete demolition waste represents a critical bottleneck in achieving a circular economy for the construction sector. This study develops a system-dynamics model that couples material flows with economic and logistical feedback to quantify how cost structures affect concrete recycling in the Sydney (Australia) metropolitan area. The model is calibrated with (i) official New South Wales 2020–2021 construction-and-demolition waste statistics, (ii) concrete consumption data scaled from state infrastructure reports, and (iii) parameters elicited from structured interviews with recycling contractors and plant operators. Scenario analysis systematically varies recycling-plant fees, landfill levies, and transport costs to trace their nonlinear impacts on three core performance metrics: recycling rate, cumulative landfill mass, and virgin gravel extraction. Results reveal distinct cost tipping points: a 10% rise in landfill-logistics costs or a 25% drop in recycling logistics costs shifts more than 95% of concrete waste into the recycling stream, cutting landfill volumes by up to 47% and reducing virgin aggregate demand by 5%. Conversely, easing landfill costs by 25% reverses these gains, driving landfill dependency above 99% and increasing gravel extraction by 39%. These findings demonstrate that carefully calibrated economic levers can override logistical inefficiencies and accelerate circular construction outcomes. The system-dynamics framework offers policymakers and industry stakeholders a decision-support tool for setting landfill levies, recycling subsidies, and infrastructure investments that jointly minimize waste and conserve natural resources. Full article
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