A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Graphene nanoplatelet/polypropylene pellets in cement-based composites: Mechanical, piezoresistive and microstructural properties
Abstract Graphene nanoplatelet–reinforced polypropylene is considered a promising conductive polymer-based additive to provide unique features to cementitious composites. This study comprehensively investigated the collective effects of graphene and polypropylene in the form of graphene nanoplatelet/polypropylene pellets (GrPp). Adding GrPp increased the flexural strength of the cementitious composites due to its high tensile strength. Moreover, the GrPp-enhanced cementitious composites show a high piezoresistive absolute maximum fractional change in electrical resistivity (FCR) of 96.50 %, stress sensitivity of 4.13 %/MPa, and repeatability of 90.81 % with the addition of 2–3.5 wt% GrPp on average. Furthermore, adding GrPp improved the piezoresistive behavior by forming a conductive path and increasing the deformability of the cementitious composites. These findings demonstrate that Gr-reinforced Pp pellets present an economical and efficient way to develop piezoresistive stress sensors for smart cement-based composites.
Highlights The mechanical, piezoresistive, and microstructural properties were assessed. Novel GrPp-reinforced cementitious composites were produced. GrPp-reinforced cementitious composites exhibit remarkable stress sensitivities. The flexural strength of cementitious composites was enhanced by GrPp usage. GrPp-reinforced cementitious composites behave as miniature cement-based sensor.
Graphene nanoplatelet/polypropylene pellets in cement-based composites: Mechanical, piezoresistive and microstructural properties
Abstract Graphene nanoplatelet–reinforced polypropylene is considered a promising conductive polymer-based additive to provide unique features to cementitious composites. This study comprehensively investigated the collective effects of graphene and polypropylene in the form of graphene nanoplatelet/polypropylene pellets (GrPp). Adding GrPp increased the flexural strength of the cementitious composites due to its high tensile strength. Moreover, the GrPp-enhanced cementitious composites show a high piezoresistive absolute maximum fractional change in electrical resistivity (FCR) of 96.50 %, stress sensitivity of 4.13 %/MPa, and repeatability of 90.81 % with the addition of 2–3.5 wt% GrPp on average. Furthermore, adding GrPp improved the piezoresistive behavior by forming a conductive path and increasing the deformability of the cementitious composites. These findings demonstrate that Gr-reinforced Pp pellets present an economical and efficient way to develop piezoresistive stress sensors for smart cement-based composites.
Highlights The mechanical, piezoresistive, and microstructural properties were assessed. Novel GrPp-reinforced cementitious composites were produced. GrPp-reinforced cementitious composites exhibit remarkable stress sensitivities. The flexural strength of cementitious composites was enhanced by GrPp usage. GrPp-reinforced cementitious composites behave as miniature cement-based sensor.
Graphene nanoplatelet/polypropylene pellets in cement-based composites: Mechanical, piezoresistive and microstructural properties
Şimşek, Barış (author) / Uygunoğlu, Tayfun (author) / Fidan, Uğur (author) / Ceran, Özge Bildi (author) / Eryeşil, Özge (author)
2024-02-20
Article (Journal)
Electronic Resource
English
Mechanical properties and thermal conductivity of graphene nanoplatelet/epoxy composites
| British Library Online Contents | 2015
Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites
| DOAJ | 2018
Assessment of Rheological and Piezoresistive Properties of Graphene based Cement Composites
| Springer Verlag | 2018
Graphene nanoplatelet-fly ash based geopolymer composites
| Elsevier | 2015