Lightweight Porous Concrete Based on Dry Mixes
Abstract
This article investigates lightweight porous concrete (LPC) produced from dry mechanically activated mixtures and evaluates the effect of porous aggregates on its physical and mechanical properties. Dry mixtures based on PC500 D0 Portland cement, foam glass, expanded clay, and expanded polystyrene granules were modified using KZ-TM-30 polysilicic acid sol. The nanomodifier improved particle size distribution toward finer fractions, resulting in increased early strength. Compressive and flexural strength, shrinkage, frost resistance, and thermal conductivity of LPC were determined, while microstructural analysis confirmed strong adhesion between the aggregate and cement matrix. The results demonstrate the effectiveness of nanomodified dry mixtures for producing high-performance lightweight concretes with thermal insulation and structural properties.
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References
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