Karakus, SelcanOzbay, Ayse Elif OzsoyPehlivan, Ahmet OnurYazgan, Ahmet UtkuKarapinar, Isil SanriTasaltin, NevinKilislioglu, Ayben2025-07-152025-07-1520250350-24651333-9095https://doi.org/10.14256/JCE.3083.2020https://hdl.handle.net/20.500.12469/7383This study introduces the use of a novel synthesised chitosan/hydromagnesite stromatolite (CHT/HS) nano-composite in cement mortars and investigates its effects on the mechanical properties. The proposed bio-based nano-composite was synthesised by a green sonication method using HS originating from Salda Lake (Burdur, Turkey). The chemical and morphological properties of HS and CHT/HS nano-composites were determined. Specimens including HS in ratios of 5 and 10 % and CHT/HS nanostructures with 0.1, 0.5, 1 and 2 % were tested for flexural and compressive strengths for 7 and 28 days. The novel synthesised CHT/HS nano-composite showed a clear enhancement in mechanical strength. These findings suggest directions for future work on different nano-filler applications.eninfo:eu-repo/semantics/closedAccessHydromagnesite StromatoliteCementNano-CompositesMechanical PerformanceMicrostructureArticle449458577WOS:00152155570000110.14256/JCE.3083.20202-s2.0-105009431852Q4Q3