Next Article in Journal
Economic and Social Sustainable Synergies to Promote Innovations in Rural Tourism and Local Development
Next Article in Special Issue
Proposal for the Evaluation of Eco-Efficient Concrete
Previous Article in Journal
Between Participation and Collective Action—From Occasional Liaisons towards Long-Term Co-Management for Urban Resilience
Previous Article in Special Issue
An Insight into the Commercial Viability of Green Roofs in Australia
Article Menu

Export Article

Open AccessArticle
Sustainability 2016, 8(7), 663; doi:10.3390/su8070663

Evaluation Analysis of the CO2 Emission and Absorption Life Cycle for Precast Concrete in Korea

Building and Urban Research Institute, Korea Institute of Civil Engineering and Building Technology, Goyang-Si, Gyeonggi-Do 10223, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Vivian W. Y. Tam
Received: 21 April 2016 / Revised: 20 June 2016 / Accepted: 23 June 2016 / Published: 13 July 2016
(This article belongs to the Special Issue Life Cycle Assessment on Green Building Implementation)
View Full-Text   |   Download PDF [1930 KB, uploaded 13 July 2016]   |  

Abstract

To comply with recent international trends and initiatives, and in order to help achieve sustainable development, Korea has established a greenhouse gas (GHG) emission reduction target of 37% (851 million tons) of the business as usual (BAU) rate by 2030. Regarding environmentally-oriented standards such as the IGCC (International Green Construction Code), there are also rising demands for the assessment on CO2 emissions during the life cycle in accordance with ISO (International Standardization Organization’s Standard) 14040. At present, precast concrete (PC) engineering-related studies primarily cover structural and construction aspects, including improvement of structural performance in the joint, introduction of pre-stressed concrete and development of half PC. In the manufacture of PC, steam curing is mostly used for the early-strength development of concrete. In steam curing, a large amount of CO2 is produced, causing an environmental problem. Therefore, this study proposes a method to assess CO2 emissions (including absorption) throughout the PC life cycle by using a life cycle assessment (LCA) method. Using the proposed assessment method, CO2 emissions during the life cycle of a precast concrete girder (PCG) were assessed. In addition, CO2 absorption was assessed against a PCG using conventional carbonation and CO2 absorption-related models. As a result, the CO2 emissions throughout the life cycle of the PCG were 1365.6 (kg-CO2/1 PCG). The CO2 emissions during the production of raw materials among the CO2 emissions throughout the life cycle of the PCG were 1390 (kg-CO2/1 PCG), accounting for a high portion to total CO2 emissions (nearly 90%). In contrast, the transportation and manufacture stages were 1% and 10%, respectively, having little effect on total CO2 emissions. Among the use of the PCG, CO2 absorption was mostly decided by the CO2 diffusion coefficient and the amount of CO2 absorption by cement paste. The CO2 absorption by carbonation throughout the service life of the PC was about 11% of the total CO2 emissions, which is about 16% of CO2 emissions from ordinary Portland cement (OPC) concrete. View Full-Text
Keywords: precast concrete; life cycle assessment; carbon dioxide; CO2 absorption; carbonation precast concrete; life cycle assessment; carbon dioxide; CO2 absorption; carbonation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Kim, T.; Chae, C.U. Evaluation Analysis of the CO2 Emission and Absorption Life Cycle for Precast Concrete in Korea. Sustainability 2016, 8, 663.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top