Analysis of CO2 Emission Reduction Effect of On-Site Production Precast Concrete Member according to Factory Production Environment

Youngju Na,Seunghyun Son,Bumjin Han,Se Jin Choi

doi:10.1155/2021/4569651

Abstract

Precast concrete (PC) method of construction is preferred for excellence in the reduction of construction period, lightweight, and durability and for PC member to be mostly transported to a site after its production in the in-plant production because the in situ production of the PC member is negatively perceived because of the limitation of space or production process being complex and difficult. However, if the PC member is produced on site and installed, it is possible to reduce the carbon dioxide emissions that are generated during shipping and loading and unloading, which are indirectly required for in-plant production. Carbon dioxide emission reduction effect due to the difference between the in situ production and in-plant production process of the PC member was confirmed by the existing studies, but the study of the carbon dioxide reduction effect according to various production environments of the in-plant production has not been performed. Therefore, the purpose of this study is to analyze the CO2 emission reduction effect of the PC member produced in site according to the in-plant production environment. As a result, it was found that when PC members were produced on site, there was an effect of reducing CO2 emissions by an average of 25.64% compared to factory production. In future, the results of this study will be used as basic data for establishing a CO2 emission reduction plan at construction sites.

Highlights

The carbon dioxide emission generated in the environment of the in-plant production of precast concrete (PC) members was analyzed to compare CO2 emission of in situ production with that of in-plant production. rough the results of the analysis, the reduction effect of the CO2 emission was analyzed according to the types of production
In the case of the in situ production of PC column, it was confirmed through the calculated results that there was a reduction in CO2 emission compared to in-plant production
Regarding the environment of in-plant production, the factors that are indirectly required for PC column production were analyzed, and they were classified into items of power, fuel, and manpower consumptions, and CO2 emissions of the items were analyzed. e in-plant production environment CO2 emissions were calculated through CO2 directly emitted in the production of the PC column and the proportion of the amount required per item

Summary

Introduction

For the preservation of the environment and prevention of global warming, efforts are needed to reduce energy consumption, raw material consumption, and carbon dioxide emissions in the construction industry that has a negative impact on environmental destruction [6, 7]. After producing 72 PC columns in the site, the difference in CO2 emissions compared to in-plant production was calculated, which led to the confirmation that in situ production was more advantageous in terms of CO2 reduction. The CO2 reduction effect is proved through the comparison of the production environment between the factory and the construction site. The CO2 emission reduction effect was confirmed through calculating the CO2 emissions by the manpower and in-plant production environment that were not considered in the preliminary study of Lim and Kim [8]. Evaluation and conclusion of the CO2 emission analysis results were drawn

Conclusion

CO2 Emissions Based on Precast Concrete Member Production Method

CO2 Emission Reduction Effect through Precast Concrete In Situ Production

Findings