Self-compacting mortar overlays using expanded polystyrene beads for thermal performance and energy efficiency in buildings

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Analysis shows improved thermal efficiency with self-compacting mortar overlays in buildings, suggesting effective retrofitting.

Improved thermal performance achieved, with thermal conductivity decreased significantly to 0.0615 W/m·K using EPS beads.
Incorporation of expanded polystyrene beads resulted in decreased compressive strength from 50.5 to 21.9 MPa for largest bead size.
Assessment using heat transfer analysis indicated energy consumption reductions of 36.3%, 46.8%, and 61.3% for different bead sizes in overlay applications.
Energy efficiency means these overlays could be valuable alternatives to traditional rigid insulation boards for thermal retrofitting.

Rizwan et al. (2025) studied this question.

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Analysis shows improved thermal efficiency with self-compacting mortar overlays in buildings, suggesting effective retrofitting.

Improved thermal performance achieved, with thermal conductivity decreased significantly to 0.0615 W/m·K using EPS beads.
Incorporation of expanded polystyrene beads resulted in decreased compressive strength from 50.5 to 21.9 MPa for largest bead size.
Assessment using heat transfer analysis indicated energy consumption reductions of 36.3%, 46.8%, and 61.3% for different bead sizes in overlay applications.
Energy efficiency means these overlays could be valuable alternatives to traditional rigid insulation boards for thermal retrofitting.

Rizwan et al. (2025) studied this question.

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