CO2 emission and construction cost reduction effect in cases of recycled aggregate utilized for nonstructural building materials in South Korea

Bigyeong Shin, Sumin Kim

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The construction industry is a major consumer of natural resources and a major waste generator. The use of recycled aggregate is important for the environmental sustainability of the construction industry because it can not only reduce the need for waste landfills, but can also reduce the depletion of natural aggregates. Although there are many studies on the environmental effects of recycled aggregate, there are few studies on its practical effects as applied to real buildings. Recycled aggregates have not been widely used owing to a lack of user trust. Generally RCA has been commonly used in nonstructural materials (such as pavements or filling materials) owing to its inherent properties. Due to inferior characteristics of RCA, there is a limit to being widely used as a structural material immediately. Therefore, to expand the use of recycled aggregate, it is necessary to study the economic and environmental benefits from using recycled aggregate as a nonstructural material for buildings. In this study, the cost and potential embodied CO2 (ECO2) emission benefits were analyzed by using recycled aggregates as the nonstructural materials in four types of buildings, including apartments with 31 different characteristics. When applied RCA to the apartments, the cost savings are -$122,057 which is 10% reduction compared to original material. And the ECO2 emissions cost savings amount to -$2,958 which is 5% reduction compared to original material; these represent the most effective case and reflect a −0.158% change in the total construction cost.

Original languageEnglish
Article number131962
JournalJournal of Cleaner Production
Volume360
DOIs
Publication statusPublished - 2022 Aug 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2022R1A2C3008559). This study was carried out with the support of 'R&D Program for Forest Science Technology (Project No."2022466C10-2224-0201")' provided by Korea Forest Service (Korea Forestry Promotion Institute).

Funding Information:
This work was supported by the National Research Foundation of Korea(NRF) grant funded by the Korea government( MSIT ) (No. 2022R1A2C3008559 ). This study was carried out with the support of 'R&D Program for Forest Science Technology (Project No." 2022466C10-2224-0201 ")' provided by Korea Forest Service (Korea Forestry Promotion Institute).

Publisher Copyright:
© 2022 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Environmental Science(all)
  • Strategy and Management
  • Industrial and Manufacturing Engineering

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