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Development of a 3D Graphene Electrode Dielectrophoretic Device
Published on: June 22, 2014
Electrochemically Exfoliated Graphene for High-Durability Cement Composites
Małgorzata Krystek1,2, Dawid Pakulski3,4, Marcin Górski2
1Université de Strasbourg, CNRS, ISIS, 8 alleé Gaspard Monge, 67000 Strasbourg, France.
Adding graphene to cement improves its durability. Electrochemically exfoliated graphene (EEG) in cement mortar significantly reduces fluid absorption, enhancing resistance to corrosive chloride and sulfate solutions for stronger, longer-lasting concrete.
Area of Science:
- Materials Science
- Civil Engineering
- Nanotechnology
Background:
- Concrete's widespread use and inherent defects necessitate advanced corrosion-resistant materials.
- Carbon nanomaterials show promise for enhancing cement-based composite properties.
- Graphene, a notable carbon nanomaterial, offers potential for significant improvements.
Purpose of the Study:
- To investigate the impact of electrochemically exfoliated graphene (EEG) on cement mortar's properties.
- To evaluate the fluid transport and corrosion resistance of EEG-modified cement composites.
- To assess the potential of EEG as an additive for developing durable cement materials.
Main Methods:
- Incorporation of 0.05 wt % electrochemically exfoliated graphene (EEG) into ordinary Portland cement mortar.
- Measurement of initial and secondary sorptivity to assess fluid transport properties.
- Evaluation of corrosion resistance in highly corrosive chloride and sulfate environments.
Main Results:
- EEG addition reduced initial sorptivity by 21% and secondary sorptivity by 25%.
- EEG-cement composites demonstrated outstanding resistance to chloride and sulfate solutions.
- Enhanced tensile strength was previously reported for EEG-cement mortars.
Conclusions:
- Electromechanically exfoliated graphene significantly improves fluid transport properties in cement mortar.
- EEG-cement composites exhibit superior durability and resistance to corrosive environments.
- This research marks a significant advancement in developing highly durable graphene-based cement composites.
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