Life Cycle Assessment of Sugarcane Bagasse Ash as Partial Cement Replacement in Concrete

DOI

10.2991/aer.k.210204.028How to use a DOI?

Keywords

life cycle assessment, sugarcane bagasse, cement replacement, sustainable building materials

Abstract

Concerns on the environmental impacts from use of concrete in the construction industry are becoming more widespread. Past and current research trends indicate that cement represents the bulk of emissions from concrete. Thus, its replacement significantly reduces negative impacts in concrete. Incorporation of industrial and agricultural waste products have shown to positively influence properties of concrete. Particularly, sugarcane bagasse ash (SCBA) has shown promising use as a cement replacement, but its environmental performance has not been thoroughly explored in the literature. This study investigates the environmental impacts of concrete with 10% cement replacement by SCBA using a life cycle assessment approach. The results were compared to normal concrete with compressive strength of 45 MPa. A school building was selected as a case study for LCA calculations. The total volume of concrete was obtained through a digital building model constructed using building information modelling (BIM) approach. The Ecoinvent database was used to construct the life cycle inventory while ReCiPe 2016 was used as the impact assessment method. Impacts were presented in the form of 17 midpoint categories. Results show that use of SCBA concrete reduced environmental impacts by an average of 5.5% in all but 3 impact categories. A small increase was observed for water use (1.6%) while significant increases in impacts were observed for ozone depletion (7.4%) and land use (58.4%). Furthermore, approximately 3% cost reductions were achieved when using SCBA concrete over normal concrete.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Saznizam Sazmee Sinoh
AU  - Zainah Ibrahim
AU  - Faridah Othman
AU  - Lee Meng Kuang
AU  - Ahmad Zaki
PY  - 2021
DA  - 2021/02/10
TI  - Life Cycle Assessment of Sugarcane Bagasse Ash as Partial Cement Replacement in Concrete
BT  - Proceedings of the 4th International Conference on Sustainable Innovation 2020–Technology, Engineering and Agriculture (ICoSITEA 2020)
PB  - Atlantis Press
SP  - 144
EP  - 150
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.210204.028
DO  - 10.2991/aer.k.210204.028
ID  - Sinoh2021
ER  -