Can Portland cement be replaced by low-carbon alternative materials? A study on thermal properties and carbon emissions of innovative cements
Maddalena, Riccardo and Roberts, Jennifer J. and Hamilton, Andrea (2018) Can Portland cement be replaced by low-carbon alternative materials? A study on thermal properties and carbon emissions of innovative cements. Journal of Cleaner Production, 186. pp. 933-942. ISSN 0959-6526 (https://doi.org/10.1016/j.jclepro.2018.02.138)
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Abstract
One approach to decarbonising the cement and construction industry is to replace ordinary Portland cement (OPC) with lower carbon alternatives that have suitable properties. We show that seven innovative cementitious binders comprised of metakaolin, silica fume and nano-silica have improved thermal performance compared with OPC and we calculate the full CO2 emissions associated with manufacture and transport of each binder for the first time. Due to their high porosity, the thermal conductivity of the novel cements is 58–90% lower than OPC, and we show that a thin layer (20 mm), up to 80% lower than standard insulating materials, is enough to bring energy emissions in domestic construction into line with 2013 Building Regulations. Carbon emissions in domestic construction can be reduced by 20–50% and these cementitious binders are able to be recycled, unlike traditional insulation materials.
ORCID iDs
Maddalena, Riccardo ORCID: https://orcid.org/0000-0001-6251-3782, Roberts, Jennifer J. ORCID: https://orcid.org/0000-0003-4505-8524 and Hamilton, Andrea ORCID: https://orcid.org/0000-0002-3124-3182;-
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Item type: Article ID code: 63382 Dates: DateEvent10 June 2018Published19 February 2018Published Online13 February 2018AcceptedSubjects: Technology > Engineering (General). Civil engineering (General) Department: Faculty of Engineering > Civil and Environmental Engineering Depositing user: Pure Administrator Date deposited: 27 Feb 2018 10:06 Last modified: 07 Oct 2024 22:02 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/63382