March 12, 2026Materials Advances0 citationsOpen Access
Experimental assessment of lime-based mortars modified with eggshell powder and egg white – towards development of materials for repair of historic buildings
This research aims to evaluate the effectiveness of using eggshell powder in lime-based mortars for preserving historic structures.
Mechanically processed eggshells were added as a partial substitute for silica sand in mortars.
Mortars were prepared using traditional lime-based recipes with varying amounts of eggshell powder.
Physical properties of the modified mortars were assessed for repair suitability.
The mortars with eggshell powder demonstrated improved workability and adhesion.
Partial replacement of silica sand with eggshells did not compromise structural integrity.
These modifications may enhance the longevity and sustainability of repair materials for historic buildings.
Abstract
In this paper, mechanically processed eggshells were employed as a partial replacement for silica sand in lime-based mortars intended for the repair of historic buildings.