Characterisation of mortars from the Ottoman period in Algiers (Algeria) through their physical and chemical properties

Research on Ottoman-era mortars from Algiers' UNESCO-listed Kasbah reveals their composition and durability. The study found that these mortars, used for grouting and coating masonry, primarily consist of lime, sand, crushed brick, and natural additives. Notably, jointing mortars were mixed in a 1:1.5-2 ratio (lime to sand), while finishing mortars followed a 1:2-3 ratio. Physical analysis showed most samples exhibited high porosity and water absorption, except for specific mortars from Villa Mahieddine and the Powder House, which demonstrated lower absorption (<15%) and porosity (<27%). Chemical analysis confirmed their hydraulic nature due to elevated levels of SiO₂, Al₂O₃, and Fe₂O₃. This characterization provides insights into the materials used in historic Algerian architecture, aiding preservation efforts.

Naima, A. M., & Messaoud, H. (2016). Characterisation of mortars from the Ottoman period in Algiers (Algeria) through their physical and chemical properties. International Journal of Physical Sciences, 11(17), 217–224. https://doi.org/10.5897/ijps2016.4505