research article text

Investigation of the mechanical strength of cement mortars containing novel synthesised chitosan/hydromagnesite stromatolite nano-composite

Abstract

Ovaj rad predstavlja upotrebu novog sintetiziranog nanokompozita kitozan/hidromagnezit stromatolit (CHT/HS) u cementnim mortovima i istražuje njegove učinke na mehanička svojstva. Predloženi biološki nanokompozit sintetiziran je metodom „zelene“ sonikacije primjenjujući hidromagnezit stromatolit (HS) iz jezera Salda (Burdur, Turska). Određena su kemijska i morfološka svojstva nanokompozita HS i CHT/HS. Uzorci koji sadrže HS u omjerima od 5 i 10 % i nanostrukture CHT/HS s 0,1, 0,5, 1 i 2 % ispitani su na savojnu i tlačnu čvrstoću nakon 7 i 28 dana. Novi sintetizirani nanokompozit CHT/HS pokazao je jasno povećanje mehaničke čvrstoće. Navedeni rezultati predlažu smjernice za budući rad na različitim primjenama nanopunila.This 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

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