Publications by authors named "Angeliki-Eirini Dimou"
Natural Hydraulic Limes (NHL) are extensively used for the restoration of Monuments of Cultural Heritage, often combined with pozzolanic materials, such as natural pozzolans and metakaolin etc. In the present study, five (5) different cases of binary lime-based pastes composed of a specific type of NHL (NHL5) and metakaolin as pozzolanic addition were examined, that were reinforced with carbon nanostructures, namely graphene and carbon nanotubes. For the first time in restoration mortars, the incorporation of carbon nanostructures was investigated, aiming to produce materials with adequate piezoresistive response, so that they have the potential to be exploited for in situ structural health monitoring.
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- Carbon-based nanomaterials (CBNs) like graphene and carbon nanotubes have superior properties that make them useful in various applications, particularly in cementitious materials.
- A new method using electrical impedance spectroscopy (EIS) with an impedance sensor has been proposed to quickly evaluate and quantify graphene oxide (GO) dispersions, addressing the lack of established characterization protocols.
- The study found that optimal GO concentration (around 0.15 wt%) facilitates better dispersion and conductivity when ultrasonicated at specific energy levels (30 to 65 kJ), making the method valuable for in-field applications in construction.