Four-years influence of waste brick powder addition in the pore structure and several durability-related parameters of cement-based mortars

•Mortars with waste brick powder showed higher pore refinement at 1500 days.•The pozzolanic activity and filler effect of brick powder improved the performance.•The global solid fraction was similar for brick mortars compared to reference ones.•The addition of brick powder produced a reduction chlor...

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Bibliographic Details
Published in:Construction & building materials 2021-11, Vol.306, p.124839, Article 124839
Main Authors: Tremiño, Rosa María, Real-Herraiz, Teresa, Letelier, Viviana, Ortega, José Marcos
Format: Article
Language:English
Subjects:
Additions
Durability
Microstructure
Sustainability
Very long term
Waste brick powder
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Summary:•Mortars with waste brick powder showed higher pore refinement at 1500 days.•The pozzolanic activity and filler effect of brick powder improved the performance.•The global solid fraction was similar for brick mortars compared to reference ones.•The addition of brick powder produced a reduction chloride diffusion after 4 years.•Waste brick powder did not noticeable worsen the water absorption after immersion. The service life of real construction elements is usually long, so the study of the behavior of cement-based materials with new pozzolanic additions in the very long term, after several hardening years, could be interesting. Here, the influence of using waste brick powder as 10% and 20% clinker substitution in microstructure and several durability-related parameters of mortars after 1500 hardening days (approximately 4 years) has been studied. According to the results obtained, the incorporation of brick powder overall improved the performance of mortars after 4 years, compared to reference mortars without addition, especially regarding the pore structure and chloride diffusion.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2021.124839