Performance Evaluation of Recycled Aggregate Geopolymer Concrete for Low-Carbon Breakwater Systems

Export Citation

Wijesekara, KKDA, Sadique, M orcid iconORCID: 0000-0001-7967-2659, Carnacina, I orcid iconORCID: 0000-0001-5567-7180, De Sande, VT and Al-Hasani, B orcid iconORCID: 0000-0003-2189-4018 (2025) Performance Evaluation of Recycled Aggregate Geopolymer Concrete for Low-Carbon Breakwater Systems. Cleaner Waste Systems. p. 100455. ISSN 2772-9125

[thumbnail of Manuscript_Final Revised_Proofread.pdf]
Preview
 Text
Manuscript_Final Revised_Proofread.pdf - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.
Download (1MB) | Preview

Abstract

Achieving circularity in the construction through the use of geopolymer concrete requires sustainable alternatives to natural virgin aggregates specially in the case of mass concrete application. However, the application of recycled aggregate (RA) in manufacturing concrete breakwaters for aggressive marine environments remains largely unexplored. A significant gap exists in comprehensive data regarding their long-term durability, leaching behavior, and mechanical performance under real-world coastal conditions. This study investigates the leaching behaviour and durability performance of a fly ash–GGBS-based geopolymer incorporating 100% RA and compared against conventional cement and natural virgin aggregate based concrete, targeting sustainable applications in coastal breakwater structures. Key parameters evaluated include compressive strength, porosity, chloride ion migration, electrical resistivity, and the leachability of metal ions under both freshwater and seawater exposure.

Item Type: Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TD Environmental technology. Sanitary engineering
Divisions: Civil Engineering and Built Environment
Publisher: Elsevier BV
Date of acceptance: 9 December 2025
Date of first compliant Open Access: 15 December 2025
Date Deposited: 15 Dec 2025 16:15
Last Modified: 15 Dec 2025 16:15
DOI or ID number: 10.1016/j.clwas.2025.100455
URI: https://researchonline.ljmu.ac.uk/id/eprint/27716
View Item View Item
CORE (COnnecting REpositories)