A Study on the Properties of Geopolymer Concrete Modified with Nano Graphene Oxide

This paper reports the results of a study conducted to examine the impacts of adding graphene oxide (GO) to GBFS-fly ash-based geopolymer concrete. The geopolymer concrete’s compressive strength, thermal conductivity, and modulus of elasticity were assessed. X-ray diffraction (XRD) analysis was cond...

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Veröffentlicht in:Buildings (Basel) 2022-08, Vol.12 (8), p.1066
Hauptverfasser: Maglad, Ahmed M., Zaid, Osama, Arbili, Mohamed M., Ascensão, Guilherme, Șerbănoiu, Adrian A., Grădinaru, Cătălina M., García, Rebeca M., Qaidi, Shaker M. A., Althoey, Fadi, de Prado-Gil, Jesús
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Sprache:eng
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Zusammenfassung:This paper reports the results of a study conducted to examine the impacts of adding graphene oxide (GO) to GBFS-fly ash-based geopolymer concrete. The geopolymer concrete’s compressive strength, thermal conductivity, and modulus of elasticity were assessed. X-ray diffraction (XRD) analysis was conducted to understand the differences in mineralogical composition and a rapid chloride penetration test (RCPT) to investigate the changes in the permeability of chloride ions imposed by GO addition. The results showed that adding 0.25 wt.% GO increases the modulus of elasticity and compressive strength of GBFS-FA concrete by 30.5% and 37.5%, respectively. In contrast, permeability to chloride ions was reduced by 35.3% relative to the GO-free counterparts. Thermal conductivity was decreased as GO dosage increased, with a maximum reduction of 33% being observed in FA65-G35 wt.% samples. Additionally, XRD showed the suitability of graphene oxide in geopolymer concrete. The present research demonstrates very promising features of GO-modified concrete that exhibit improved strength development and durability compared to traditional concrete, thus further advocating for the wider utilization of geopolymer concrete manufactured from industrial byproducts.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings12081066