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Cited by 1Phase Change Materials ResearchConcrete and Cement Materials ResearchHygrothermal properties of building materials

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Biomass Ash and Phase Change Material (PCM) for Energy Efficiency of Sustainable Cement–Lime Composites

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Guardia, Cynthia, Guerrero, Ana, Barluenga, Gonzalo·2026·Energies
DOI 10.3390/en19030723
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Abstract

Sustainability and nearly zero-energy consumption of new and existing buildings is a keystone in the new guidelines established by the European Commission. Likewise, waste management is in the focus of reducing the impact of industrial processes. The use of industrial byproducts, such as biomass ashes (BA), can be an interesting solution for waste valorization, reducing the carbon footprint and enhancing sustainability. In addition, Phase Change Materials (PCMs) can be used for improving energy efficiency due to their thermal storage capacity. An experimental study on the effect of biomass ash (BA) and PCM on the microstructure, chemical, physical and mechanical properties of cement–lime pastes was carried out. The partial replacement of cement with BA reduced compressive strength although did not substantially modify other paste properties, while the addition of PCM had a huge impact on microstructure and, therefore, physical and mechanical properties. PCM had a remarkable effect on thermal properties, endowing thermal storage capacity and reducing thermal conductivity, and the combination with BA further improved paste thermal properties.

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Metadata

Authors
Guardia, C., Guerrero, A., & Barluenga, G.
Affiliations
  • Universidad de Alcalá (ES)
  • Consejo Superior de Investigaciones Científicas (ES)
Corresponding author
Barluenga, Gonzalo
ORCID
Venue
Energies
Publisher
MDPI AG
Published
2026-01-29
Volume
19
Issue
3
Pages
723
ISSN
1996-1073 (ISSN-L)
DOI
10.3390/en19030723
OpenAlex
W7126067102
Cited by
1
References
1
Citations by year
2026: 1
FWCI
1.67
Type
journal article
Language
en
Open access
Licence
Locations
  • Energies (publishedVersion, cc-by)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion, cc-by)
  • e_Buah (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • University of Alcalá
  • Spanish Ministry of Universities
  • European Union
  • CALTH3D (TED2021-132585B-I00)
  • Spanish Ministry of Science and Innovation (RED2022-134219-T)
  • European Commission (101086440)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Phase Change Materials Research
  • Physical Sciences › Engineering › Civil and Structural Engineering › Concrete and Cement Materials Research
  • Physical Sciences › Engineering › Building and Construction › Hygrothermal properties of building materials
Keywords
biomass ash, phase change materials, cement replacement, waste valorization, thermal energy storage, thermal conductivity, compressive strength, microstructure, building energy efficiency, industrial by-products

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