Case Study – The CARES Sustainable Construction Steel Certification Scheme for Steel Reinforcement in Concrete

Brankley, Lee; Tugrul, Ayhan; Camci, Ladin; Knight, Dave

doi:10.1088/1757-899x/442/1/012012

Cited by 1 publication

(1 citation statement)

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“…The buildings and construction sector is responsible for 37% of energy and processrelated emissions [1]. In addition, a large amount of construction waste is generated in this sector [2,3], which is approximately one-third of the waste stream [4], and these construction solid wastes are primarily derived from demolition during the end-of-life (EoL) phase of buildings and construction [5].…”

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confidence: 99%

Carbon Emission Reduction Evaluation of End-of-Life Buildings Based on Multiple Recycling Strategies

Lei,

Yang,

Yan

et al. 2023

Sustainability

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With the promotion of sustainability in the buildings and construction sector, the carbon saving strategies for the end-of-life (EoL) phase have been receiving increasing attention. In this research, life cycle assessment (LCA) theory was employed to study and compare the carbon savings benefits of three different management strategies (i.e., recycling, remanufacturing, and reuse) on the EoL phase of various buildings (including residential, office, commercial, and school buildings). Moreover, the carbon savings potential (CSP) was calculated and analyzed, which is defined as the percentage of the actual carbon savings to the sum of the total embodied carbon of the building. Results show that compared with traditional demolition and landfill treatment, the implementation of integrated management strategies for residential, office, commercial, and school buildings can reduce carbon emissions by 193.5–526.4 kgCO2-e/m2. Among the building materials, steel bar, structural steel, and concrete account for the major proportion of the total carbon savings of buildings (81.5–93.2%). The sequence of the CSPs for the four types of buildings, in descending order, is school, residential, commercial, and office buildings. A building with a life span of 50 years has the greatest CSP. The results of the study can be used to reduce environmental impacts, and have broad positive implications in terms of sustainable construction.

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