European Journal of Environmental and Civil engineering, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 23

Published: Dec. 13, 2024

The use of recycled materials in construction is a key strategy for sustainable development and reducing landfill space. Recycled concrete aggregates (RCA) are commonly used but often result lower quality, primarily due to weaknesses the interfacial transition zone. To address this, were pre-soaked various pozzolanic solutions, including micro-silica, micro-zeolite, nano-silica, nano-montmorillonite. Mechanical tests (compressive strength, modulus elasticity) durability (drying shrinkage, sulfate attack, half-cell corrosion potential, electrical resistance) performed evaluate performance improvements both short long terms. Results showed an improvement compressive strength most treatments after 28 days, with nanosilica-treated showing highest increase (12.4%). Durability revealed best against attack treated nano-montmorillonite nano-clay reductions 19.39% 18.19%, respectively, 10 months. Microstructural analysis confirmed that pre-soaking solutions positively affected mechanical properties. Zero-dimensional pozzolans short-term benefits, while two-dimensional pozzolans, like montmorillonite, had more significant long-term effects, offering promising solution improving concrete's overall performance, especially harsh environmental conditions challenging environments.

Language: Английский