An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter?
Due to global environmental concerns related to climate change, the need to improve the service life of structures and infrastructures is imminently urgent. Structural elements typically suffer service life reductions, leading to poor environmental sustainability and high maintenance costs. Graphene...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/4/726 |
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| author | Francesca Romana Lamastra Giampiero Montesperelli Emanuele Galvanetto Mehdi Chougan Seyed Hamidreza Ghaffar Mazen J. Al-Kheetan Alessandra Bianco |
| author_facet | Francesca Romana Lamastra Giampiero Montesperelli Emanuele Galvanetto Mehdi Chougan Seyed Hamidreza Ghaffar Mazen J. Al-Kheetan Alessandra Bianco |
| author_sort | Francesca Romana Lamastra |
| collection | DOAJ |
| description | Due to global environmental concerns related to climate change, the need to improve the service life of structures and infrastructures is imminently urgent. Structural elements typically suffer service life reductions, leading to poor environmental sustainability and high maintenance costs. Graphene oxide nanosheets (GONSs) effectively dispersed in a cement matrix can promote hydration, refine the microstructure and improve interfacial bonding, leading to enhanced building materials’ performance, including mechanical strength and transport properties. Cement-based nanocomposites engineered with GONSs were obtained using two commercial nanofillers, a GO water suspension and a free-flowing GO nanopowder, characterized by fully comparable morphology, size and aspect ratio and different oxidation degrees (i.e., oxygen-to-carbon molar ratio), 0.55 and 0.45, respectively. The dosage of the 2D-nanofiller ranged between 0.01% and 0.2% by weight of cement. The electrical and thermal properties were assessed through electrochemical impedance spectroscopy (EIS) and a heat flow meter, respectively. The results were discussed and linked to micrometric porosity investigated by micro-computed tomography (μ-CT) and transport properties as determined by initial surface absorption test (ISAT), boil-water saturation method (BWS) and chloride ion penetration test. Extra-low dosage mortars, especially those loaded with a lower oxidation degree (i.e., 0.45GO), showed decreased permeability and improved barrier to chloride ion transport combined with enhanced thermal and electrical conductivity with respect to that of the control samples. |
| first_indexed | 2024-03-11T08:19:44Z |
| format | Article |
| id | doaj.art-3a345df9c55c439a845b7ad671b0c094 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T08:19:44Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-3a345df9c55c439a845b7ad671b0c0942023-11-16T22:28:05ZengMDPI AGNanomaterials2079-49912023-02-0113472610.3390/nano13040726An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter?Francesca Romana Lamastra0Giampiero Montesperelli1Emanuele Galvanetto2Mehdi Chougan3Seyed Hamidreza Ghaffar4Mazen J. Al-Kheetan5Alessandra Bianco6Dipartimento di Ingegneria dell’Impresa “Mario Lucertini” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico, 00133 Roma, ItalyDipartimento di Ingegneria dell’Impresa “Mario Lucertini” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico, 00133 Roma, ItalyDipartimento di Ingegneria Industriale (DIEF), Università di Firenze, Via di Santa Marta 3, 50139 Firenze, ItalyDipartimento di Ingegneria dell’Impresa “Mario Lucertini” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico, 00133 Roma, ItalyDepartment of Civil and Environmental Engineering, Brunel University London, Uxbridge UB8 3PH, Middlesex, UKDepartment of Civil and Environmental Engineering, College of Engineering, Mutah University, Mutah 61710, Karak, JordanDipartimento di Ingegneria dell’Impresa “Mario Lucertini” and Consorzio INSTM Unità di Ricerca “Roma Tor Vergata”, Università degli Studi di Roma “Tor Vergata”, Via del Politecnico, 00133 Roma, ItalyDue to global environmental concerns related to climate change, the need to improve the service life of structures and infrastructures is imminently urgent. Structural elements typically suffer service life reductions, leading to poor environmental sustainability and high maintenance costs. Graphene oxide nanosheets (GONSs) effectively dispersed in a cement matrix can promote hydration, refine the microstructure and improve interfacial bonding, leading to enhanced building materials’ performance, including mechanical strength and transport properties. Cement-based nanocomposites engineered with GONSs were obtained using two commercial nanofillers, a GO water suspension and a free-flowing GO nanopowder, characterized by fully comparable morphology, size and aspect ratio and different oxidation degrees (i.e., oxygen-to-carbon molar ratio), 0.55 and 0.45, respectively. The dosage of the 2D-nanofiller ranged between 0.01% and 0.2% by weight of cement. The electrical and thermal properties were assessed through electrochemical impedance spectroscopy (EIS) and a heat flow meter, respectively. The results were discussed and linked to micrometric porosity investigated by micro-computed tomography (μ-CT) and transport properties as determined by initial surface absorption test (ISAT), boil-water saturation method (BWS) and chloride ion penetration test. Extra-low dosage mortars, especially those loaded with a lower oxidation degree (i.e., 0.45GO), showed decreased permeability and improved barrier to chloride ion transport combined with enhanced thermal and electrical conductivity with respect to that of the control samples.https://www.mdpi.com/2079-4991/13/4/726graphene oxidenanocompositeselectrical resistivitythermal conductivitytransport propertiesporosity |
| spellingShingle | Francesca Romana Lamastra Giampiero Montesperelli Emanuele Galvanetto Mehdi Chougan Seyed Hamidreza Ghaffar Mazen J. Al-Kheetan Alessandra Bianco An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter? Nanomaterials graphene oxide nanocomposites electrical resistivity thermal conductivity transport properties porosity |
| title | An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter? |
| title_full | An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter? |
| title_fullStr | An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter? |
| title_full_unstemmed | An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter? |
| title_short | An Insight into Durability, Electrical Properties and Thermal Behavior of Cementitious Materials Engineered with Graphene Oxide: Does the Oxidation Degree Matter? |
| title_sort | insight into durability electrical properties and thermal behavior of cementitious materials engineered with graphene oxide does the oxidation degree matter |
| topic | graphene oxide nanocomposites electrical resistivity thermal conductivity transport properties porosity |
| url | https://www.mdpi.com/2079-4991/13/4/726 |
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