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Life cycle greenhouse gas emissions of hemp–lime wall constructions in the UK

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  • Ip, Kenneth
  • Miller, Andrew

Abstract

Over half of the global raw materials are consumed in the construction of buildings and roads, their associated greenhouse gas emissions from excavation to final disposal are pivotal to the change in global climate. Hemp is a natural resource that has recently been used as a low environmental impact material in a number of composite products. In buildings, it is increasingly used with a lime base binder in wall constructions. There are limited data available to evaluate the environmental impact of this type of construction in the UK. This research aims to identify the processes and materials involved in the construction of hemp–lime walls and to establish their life cycle impact on climate change. The study follows assessment procedures and guidelines of international (ISO14040) and UK (PAS2050) standards. The functional unit defined for the hemp–lime wall construction is 1m square in area, 300mm thick with timber frame support inside. Primary data were collected for processes and materials that have no existing information. Other processes with impact data available from credible database were adapted in the assessment by taking into account the conditions and practice in the UK. Assessment was carried out using the SimaPro LCA tool over a lifetime of 100 years. Within the boundary and assumptions made, results showed the functional unit could sequestrate 82.7kg of carbon dioxide with a net life cycle reduction of greenhouse gas emission of 36.08kg CO2e.

Suggested Citation

  • Ip, Kenneth & Miller, Andrew, 2012. "Life cycle greenhouse gas emissions of hemp–lime wall constructions in the UK," Resources, Conservation & Recycling, Elsevier, vol. 69(C), pages 1-9.
    • Handle: RePEc:eee:recore:v:69:y:2012:i:c:p:1-9
    DOI: 10.1016/j.resconrec.2012.09.001
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    References listed on IDEAS

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    1. González-García, S. & Hospido, A. & Feijoo, G. & Moreira, M.T., 2010. "Life cycle assessment of raw materials for non-wood pulp mills: Hemp and flax," Resources, Conservation & Recycling, Elsevier, vol. 54(11), pages 923-930.
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    Cited by:

    1. Piotr Kosiński & Przemysław Brzyski & Maria Tunkiewicz & Zbigniew Suchorab & Damian Wiśniewski & Paweł Palczyński, 2022. "Thermal Properties of Hemp Shives Used as Insulation Material in Construction Industry," Energies, MDPI, vol. 15(7), pages 1-18, March.
    2. Arlen Zúniga & Rute Eires & Raphaele Malheiro, 2023. "New Lime-Based Hybrid Composite of Sugarcane Bagasse and Hemp as Aggregates," Resources, MDPI, vol. 12(5), pages 1-20, April.
    3. Yudi Wu & Helen X. Trejo & Gang Chen & Simeng Li, 2021. "Phytoremediation of contaminants of emerging concern from soil with industrial hemp (Cannabis sativa L.): a review," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 23(10), pages 14405-14435, October.
    4. Rotem Haik & Isaac A. Meir & Alva Peled, 2023. "Lime Hemp Concrete with Unfired Binders vs. Conventional Building Materials: A Comparative Assessment of Energy Requirements and CO 2 Emissions," Energies, MDPI, vol. 16(2), pages 1-11, January.

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