Few-Layers Graphene-Based Cement Mortars: Production Process and Mechanical Properties

Polverino, Salvatore; Castillo, Antonio Esaú Del Río; Brencich, Antonio; Marasco, Luigi; Bonaccorso, Francesco; Morbiducci, Renata

doi:10.3390/su14020784

Cited by 14 publications

(6 citation statements)

References 86 publications

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“…12,13 In addition to GO, few-layer graphenes (FLG) are also promising materials to improve the flexural/compressive strength and durability of CCM, since the graphene carbon planes act as nano nucleation points to provide a more compact and uniform microstructure. 14 Furthermore, the use of FLG in cement improves the electrical and self-sensing properties for the production of “smart” concrete. 15…”

Section: Introductionmentioning

confidence: 99%

Functionalized graphene-based materials for cementitious applications

Cacciatore,

Zardi,

Capone

et al. 2024

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Functionalized graphene-based materials for cementitious applications

Cacciatore,

Zardi,

Capone

et al. 2024

RSC Adv.

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“…The electrode materials were also analyzed by Raman spectroscopy ( Figure 4 ) with the same excitation laser to provide their probable number of graphene layers, structural defects, and doping of the material [ 24 ]. Figure 4 a shows the structure of graphite, and, according to the literature, it matches the typical structural characteristics of graphite.…”

Section: Resultsmentioning

confidence: 99%

Assessment of Graphite, Graphene, and Hydrophilic-Treated Graphene Electrodes to Improve Power Generation and Wastewater Treatment in Microbial Fuel Cells

Borja-Maldonado

Zavala

2023

Bioengineering

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In this study, graphite, graphene, and hydrophilic-treated graphene electrodes were evaluated in a dual-chamber microbial fuel cell (DC-MFC). Free-oxygen conditions were promoted in anodic and cathodic chambers. Hydrochloric acid at 0.1 M and pH 1.1 was used as a catholyte, in addition to deionized water in the cathodic chamber. Domestic wastewater was used as a substrate, and a DuPontTM Nafion 117 membrane was used as a proton exchange membrane. The maximum power density of 32.07 mW·m−2 was obtained using hydrophilic-treated graphene electrodes and hydrochloric acid as catholyte. This power density was 1.4-fold and 32-fold greater than that of graphene (22.15 mW·m−2) and graphite (1.02 mW·m−2), respectively, under the same operational conditions. In addition, the maximum organic matter removal efficiencies of 69.8% and 75.5% were obtained using hydrophilic-treated graphene electrodes, for hydrochloric acid catholyte and deionized water, respectively. Therefore, the results suggest that the use of hydrophilic-treated graphene functioning as electrodes in DC-MFCs, and hydrochloric acid as a catholyte, favored power density when domestic wastewater is degraded. This opens up new possibilities for improving DC-MFC performance through the selection of suitable new electrode materials and catholytes.

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“…The improvement in compressive, flexural and tensile strength may be due to the reinforcement of the microstructure of the cement matrix. Indeed, the improvement of the microstructure of the cement matrix of concrete may be achieved by GNPs due to their ability to improve the interfacial bond between graphene nanoparticles and C-S-H gels [14,15], and to mitigate crack formation and propagation [7,16]. Previous studies have also found that the addition of GNPs can result in enhancing the strength of concrete specimens.…”

Section: Results Of Mechanical Properties 511 Compressive Flexural An...mentioning

confidence: 99%

An Experimental Investigation of Environmentally Friendly Concrete Reinforced With Graphene Nanoplatelets

Jaramillo¹,

Kalfat²

2023

World Congress on Civil, Structural, and Environmental Engineering

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Carbon Dioxide (𝐶𝑂 2 ) is the principal greenhouse gas that contributes to increasing the greenhouse effect, which has a significant adverse impact on the environment. There are large quantities of carbon dioxide emissions associated with cement production. Production of cement is estimated to be responsible for approximately 8% of global greenhouse gas emissions. Besides its environmental impact, concrete also exhibits low tensile and ductility, which can result in cracks. In recent years, carbon nanomaterials, such as Carbon Nanotubes (CNT), Carbon Nanofibers (CNFs), Graphene Nanoplatelets (GNPs), Graphene Oxide (GO), and Reduced Graphene Oxide (rGO), have gained increasing attention from the building industry and scientific community due to their exceptional mechanical and physical properties. In fact, the use of carbon nanomaterials is considered an environmentally friendly method of enhancing the mechanical properties of concrete. The purpose of this study is to investigate the effects of GNPs on the mechanical properties of concrete using the wet dispersion method. In addition to using ultrasonic treatment to prepare GNP dispersions, a superplasticizer is also used to facilitate the dispersion of GNPs in water. Concrete specimens were prepared with 0.25 wt% GNPs. Compressive, flexural and tensile strength of concrete at age of 7 days were assessed. As a result of adding GNPs, strength of concrete specimens was enhanced. Furthermore, when GNPs were incorporated into concrete specimens, compressive, flexural and tensile strength was increased by 19, 8.7 and 9.1 % respectively.

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Few-Layers Graphene-Based Cement Mortars: Production Process and Mechanical Properties

Cited by 14 publications

References 86 publications

Functionalized graphene-based materials for cementitious applications

Functionalized graphene-based materials for cementitious applications

Assessment of Graphite, Graphene, and Hydrophilic-Treated Graphene Electrodes to Improve Power Generation and Wastewater Treatment in Microbial Fuel Cells

An Experimental Investigation of Environmentally Friendly Concrete Reinforced With Graphene Nanoplatelets

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