Nano-cementitious composites modified with Graphene Oxide – a review

Anwar, Abdullah; Liu, Xuemei; Zhang, Lihai

doi:10.1016/j.tws.2022.110326

Cited by 27 publications

(6 citation statements)

References 181 publications

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“…Furthermore, the high specific surface area of GO sheets encourages the absorption of water molecules to form clusters of GO sheets [93,114]. Moreover, due to their large lateral size, GO sheets tend to have a high water retention capacity, resulting in a reduction in fluidity when exposed to a cementitious matrix [115]. The fluidity of concrete is a critical parameter in commercial-scale applications due to its direct correlation with the workability and pumpability of concrete.…”

Section: Challenges In the Application Of Go-reinforced Concretementioning

confidence: 99%

Effect of Graphene Oxide Nanomaterials on the Durability of Concrete: A Review on Mechanisms, Provisions, Challenges, and Future Prospects

Udumulla,

Ginigaddara,

Jayasinghe

et al. 2024

Materials

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This review focuses on recent advances in concrete durability using graphene oxide (GO) as a nanomaterial additive, with a goal to fill the gap between concrete technology, chemical interactions, and concrete durability, whilst providing insights for the adaptation of GO as an additive in concrete construction. An overview of concrete durability applications, key durability failure mechanisms of concrete, transportation mechanisms, chemical reactions involved in compromising durability, and the chemical alterations within a concrete system are discussed to understand how they impact the overall durability of concrete. The existing literature on the durability and chemical resistance of GO-reinforced concrete and mortar was reviewed and summarized. The impacts of nano-additives on the durability of concrete and its mechanisms are thoroughly discussed, particularly focusing on GO as the primary nanomaterial and its impact on durability. Finally, research gaps, future recommendations, and challenges related to the durability of mass-scale GO applications are presented.

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Section: Challenges In the Application Of Go-reinforced Concretementioning

confidence: 99%

Effect of Graphene Oxide Nanomaterials on the Durability of Concrete: A Review on Mechanisms, Provisions, Challenges, and Future Prospects

Udumulla,

Ginigaddara,

Jayasinghe

et al. 2024

Materials

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“…To ensure a high rate of extrudability for thin printing of architectural elements, such materials contain fine-granular particles [3] that may cause increased shrinkage and cracking. Reinforcing techniques using nanomaterials can provide a way to modify the structure of cement-based fine granular composites and thus mitigate their adverse behaviour [4]. Graphene is one of the possible materials to be applied [5].…”

Section: Introductionmentioning

confidence: 99%

The influence of graphene admixture on strength properties of cement-based composites

Pokorný,

Ševčík

2023

J. Phys.: Conf. Ser.

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Cement-based composites pose a long tradition in the construction industry and are used in various forms such as structural concretes, masonry and plaster mortars, injection and special mixtures for three-dimensional concrete printing. Fine granular composites intended for injection and printing activities may have increased tend to shrinkage and cracking. The application of nanomaterials may bring a partial solution to toughening of cement-based composites. For this reason, the effect of the addition of various amounts of graphene admixture up to 0.03 wt.% on the strength properties of fine granular cement-based composites was researched. All prepared fresh mixes had the constant w/c ratio, and the behavior of modified composites was compared with plain reference material. On hardened test specimens, compressive strengths obtained after 1, 7 and 28 days of curing time were evaluated. The experimental investigation revealed, on the one hand, the partial worsening of workability of fresh mixes being compensated with an increasing amount of a superplasticizer and, on the other hand, the increment of compressive strength up to 12.5 % even for specimens with the lowest addition of graphene.

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“…Adding small amounts of GO to building materials qualitatively improves their physical and mechanical properties. With the addition of graphene oxide, new types of cement [ 48 , 49 ], anticorrosion and refractory materials, coatings [ 50 , 51 ], and polymer composite materials with variable properties [ 52 ] are obtained. In addition, GO has a high thermal conductivity [ 53 , 54 ], which makes it a promising candidate as a filler for heat-conducting nanofluids.…”

Section: Introductionmentioning

confidence: 99%

The Thermophysical and Physicochemical Properties of the Aqueous Dispersion of Graphene Oxide Dual-Beam Thermal Lens Spectrometry

et al. 2023

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Modern heat-conducting materials require special attention to analyze their thermophysical properties. Compared to classical methods, thermal lens spectrometry (TLS) has advantages due to its high sensitivity to physical and chemical composition. To avoid a systematic error in the analysis of complex systems, it is necessary to realize the limits of the applicability of the method. This study considers the features of thermal-diffusivity measurements by TLS in the stationary state for dispersed systems with absorbances up to 0.05. The limits of applicability of the method in analyzing heterogeneous systems are shown, and a mathematical apparatus is proposed for indicating a systematic error in finding thermal diffusivity that does not exceed 1%. Graphene oxide (GO), which has attractive physicochemical properties, was used as the object of analysis. GO belongs to 2D objects, the study of which requires highly sensitive methods and special attention when discussing the results. The thermophysical properties of aqueous dispersions of graphene oxide in a wide range of concentrations (up to 2 g/L) and lateral sizes (up to 4 µm) were studied by TLS. It has been found that with increasing nanophase concentration, the thermal diffusivity of graphene oxide dispersions passes through a minimum, which can be used in solving thermal insulation problems. It has been established that prolonged laser irradiation of the dispersion leads to a change in thermal diffusivity, which indicates the photochemical reduction of graphene oxide.

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Nano-cementitious composites modified with Graphene Oxide – a review

Cited by 27 publications

References 181 publications

Effect of Graphene Oxide Nanomaterials on the Durability of Concrete: A Review on Mechanisms, Provisions, Challenges, and Future Prospects

Effect of Graphene Oxide Nanomaterials on the Durability of Concrete: A Review on Mechanisms, Provisions, Challenges, and Future Prospects

The influence of graphene admixture on strength properties of cement-based composites

The Thermophysical and Physicochemical Properties of the Aqueous Dispersion of Graphene Oxide Dual-Beam Thermal Lens Spectrometry

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