A comprehensive review on life-cycle assessment of concrete using industrial by-products
Balamurali Kanagaraj, N. Anand, U. Johnson Alengaram, R. Samuvel Raj, Éva Lublóy
Abstract
The present study, highlights the life cycle analysis (LCA) of concrete, from material procurement to the final disposal of the final product, after its service life was studied. Two types of concrete, M30, and M50, were employed to compare the sustainability performance with incorporating natural and recycled materials. The recycled material is sourced from the demolished building, which is processed to remove the unwanted debris and obtain quality aggregates ranging from 10 mm to 12.5 mm. The processed recycled aggregates (RA) were replaced with 50 % and 100 % of conventional natural aggregate in the concrete. The greenhouse gas emission (GHG-e) and the embodied energy (EE) of the concrete mix ingredients were analyzed with the concrete production. In comparison with the M30 and M50 grade concrete, nearly, 17 % lower GHG-e was recorded for M30 grade concrete when compared to M50 grade concrete. After the service life of concrete, the GHG-e and EE associated during the demolition, loading, and transportation of demolished material was found to be 4.62 kg-CO 2 /m 3 and 63.67 MJ/m 3 .