Graphene oxide-incorporated cementitious composites: a thorough investigation

Bagheri, Ali; Negahban, Ehsan; Ali, Asad; Abbasi, Haider Ali; Raza, Syed M.

doi:10.1039/d2ma00169a

Cited by 6 publications

(11 citation statements)

References 100 publications

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“…Recent reports show that adding a small amount of nanocarbon to the C-S-H matrix drastically increases the mechanical performance of cement-based materials [26][27][28]. For instance, adding a small percentage of graphene oxide to a cement-based composite enhances flexural and compressive strength by 50% and 28%, respectively [29]. Multiple authors obtain similar claims reported in the following references [30][31][32][33].…”

Section: Introductionmentioning

confidence: 53%

On the nanoscale interface, electronic structure, and optical properties of nanocarbon-reinforced calcium silicate hydrates

Munio,

Domato,

Pido

et al. 2023

Phys. Scr.

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This study presents results from quantum chemical simulations of the synergetic interaction, electronic structure, and optical properties of calcium-silicate hydrates (C-S-H) reinforced by graphene-nanoribbons and single-walled carbon nanotubes (SWCNT). The calculations show that C-S-H/graphene-nanoribbon and C-S-H/SWCNT composites are stabilized by electrostatic interaction due to the charge transfer from Ca ions at the interface of C-S-H to the nearby C atoms of the graphene-nanoribbon and SWCNT. Removing Ca ions at the interface drastically decreases the strength of interaction into a weak van der Waals type. The Bader charge transfer analysis and electron distribution topology further confirm these results. Generally, the electronic states of the graphene-nanoribbon and SWCNT are shifted to lower energy in the complex. The electronic structure of graphene-nanoribbon and SWCNT is susceptible to the Ca ions-rich C-S-H environment. The composites’ overall absorption spectra can be considered superimposed of the isolated nanocarbon and C-S-H except in the lower energy region due to charge transfer and realignment of energy states. The results presented here reveal the bonding mechanism of the C-S-H with nanocarbon at the fundamental level. This work serves as a reference for the nanoengineering cement-based material with nanocarbon for the next-generation smart infrastructure.

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Section: Introductionmentioning

confidence: 53%

On the nanoscale interface, electronic structure, and optical properties of nanocarbon-reinforced calcium silicate hydrates

Munio,

Domato,

Pido

et al. 2023

Phys. Scr.

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“…The characterization of our cement paste samples (CG0 and CG05) was conducted using 29 Si Magic Angle Spinning Nuclear Magnetic Resonance ( 29 Si MAS-NMR). The samples, crushed and aged for 7 and 28 days, were analyzed using a Bruker Spectrometer model AV400 MHz WB (Bruker, Billerica, MA, USA).…”

Section: Si Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

“…The relaxation time used for all experiments was 5 s, assuming differential error with respect to the usual acquisition parameters. The chemical shifts of 29 Si were calibrated with reference to Tetramethylsilane (TMS), which was set at 0 parts per million (ppm). This is a standard procedure in NMR spectroscopy as TMS is commonly used as an internal standard due to its high symmetry and low reactivity.…”

Section: Si Magic Angle Spinning Nuclear Magnetic Resonancementioning

confidence: 99%

“…This can improve the durability of CM and increase the structures lifespan. Bagheri et al [ 29 ] also investigated the impact of incorporating GO on the transport properties and durability of cementitious composites. Their findings revealed an enhancement in transport properties, indicating improved durability behavior, upon the introduction of GO into the mortar.…”

Section: Introductionmentioning

confidence: 99%

“…Table 1 shows further studies. Enhanced water sorptivity and chloride penetration [26] In researching the purpose of GO-modified cement mortar strengths and durability, first, a deep look at the nanoscale level was taken to study the effects of GO on cement paste, such as hydration products and (C-S-H) gels chain structure, since these are the mains contributors to the CM performance improvement, using TGA and 29 Si MAS-NMR characterization techniques. Subsequently, the influence of varying amounts of GO on the mechanical properties and durability of cement mortar was systematically researched.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Graphene Oxide on Mechanical Properties and Durability of Cement Mortar

Djenaoucine,

Picazo,

de la Rubia

et al. 2024

Materials

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The effect of graphene oxide (GO) on the mechanical strengths and durability of cement composites was researched by preparing GO-modified cement mortars. Thermogravimetric analysis (TGA) and nuclear magnetic resonance (29Si MAS-NMR) were performed on the cement paste to evaluate the influence of GO on the hydration process and chain structure of calcium-silicate-hydrate (C–S–H) gels. TGA revealed that the high GO dosage increased the content of C–S–H by 5.46% compared with the control at 28 days. Similarly, 29Si-NMR improved the hydration degree and main chain length (MCL) in GO-modified samples at 28 days. The GO led to increases of 2.54% and 7.01% in the hydration degree and MCL, respectively, compared with the control at 28 days. These findings underscore the multifaceted role of GO in improving the mechanical properties and durability of cement composites. Mechanical strength tests, such as compressive and flexural tests, were conducted on cement mortars. The optimal dosage of GO increased the compressive strength by 9.02% after 28 days. Furthermore, the flexural strength of cement mortars with the combination of GO and superplasticizer (SP) after 28 days increased by 21.86%, compared with reference mortar. The impact of GO proved to be more pronounced and beneficial in the durability tests, suggesting that GO can enhance the microstructure through hydration products to create a dense and interconnected microstructure.

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Graphene concrete: Recent advances in production methods, performance properties, environmental impact and economic viability

Alateah

2023

Case Studies in Construction Materials

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Graphene oxide-incorporated cementitious composites: a thorough investigation

Abstract: The use of nanomaterials, particularly carbon-derived ones, has always been a high-tech topic of research in the field of cement and concrete. Graphene and its derivatives are the most popular...

Cited by 6 publications

References 100 publications

On the nanoscale interface, electronic structure, and optical properties of nanocarbon-reinforced calcium silicate hydrates

On the nanoscale interface, electronic structure, and optical properties of nanocarbon-reinforced calcium silicate hydrates

Influence of Graphene Oxide on Mechanical Properties and Durability of Cement Mortar

Graphene concrete: Recent advances in production methods, performance properties, environmental impact and economic viability

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