Influence of graphene oxide additions on the microstructure and mechanical strength of cement

Wang, Qin; Wang, Jian; Lü, Chunxiang; Liu, Bowei; Zhang, Kun; Chong-zhi, LI

doi:10.1016/s1872-5805(15)60194-9

Cited by 225 publications

(82 citation statements)

References 15 publications

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“…Similarly, 0.10 wt.% GO leads to a further decrease in the final setting time and fluidity of 37.4% and 20%, respectively. The shorted final setting time is attributed to that a moderate amount of GO may accelerate the hydration of cement [19,20]. In addition, the reduction of the diameter in the mini-slump test results from the larger specific surface area of the GO.…”

Section: Influence Of Go Addition On the Workability Of The Mkpc Pastementioning

confidence: 99%

Effects of graphene oxide on the properties and microstructures of the magnesium potassium phosphate cement paste

Hou

et al. 2016

Construction and Building Materials

106

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Section: Influence Of Go Addition On the Workability Of The Mkpc Pastementioning

confidence: 99%

Effects of graphene oxide on the properties and microstructures of the magnesium potassium phosphate cement paste

Hou

et al. 2016

Construction and Building Materials

106

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“…As a carbon-based nanomaterial, graphene oxide (GO) consists of several layers of wrinkled two-dimensional carbon sheet with various oxygen-containing functional groups, which is highly dispersible in water and possesses excellent mechanical properties [6,7]. Existing studies have confirmed that GO can regulate the hydration products of cement and significantly improve the mechanical properties of cement composites [8][9][10][11][12]. Xu [13] and Hou [14] examined the role of GO in cement composites by using experiments and a molecular dynamics (MD) simulation.…”

Section: Introductionmentioning

confidence: 99%

The Role of Graphene Oxide on the Hydration Process and Chemical Shrinkage of Cement Composites

Xu¹

2020

Ceramics - Silikaty

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Graphene oxide (GO) has attracted increasing attention for its application in cementitious materials as it can be used to regulate the hydration products of cement and improve the properties of cement composites. This paper investigated the role of GO on the hydration process and chemical shrinkage of a cement paste through an experimental study and molecular dynamics simulation. The hydration heat flow of a cement composite with GO (CCG) was characterised by using an isothermal calorimeter. The chemical shrinkage of the CCG was also measured by applying a modified method based on ASTM C1608. The test results have shown that incorporating GO can mainly accelerate the hydration rate of cement composites at the early stage, but would not change the four-stage process of the cement hydration. The addition of GO by 0.3 wt% of cement is able to reduce the chemical shrinkage of the cement composites. This regulation effect is mainly attributed to the hydrogen bonding, which has been verified by the molecular dynamics simulation.

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“…Shang et al observed that the fluidity and increased rheological parameters of the cement matrix are reduced and increased, respectively, by adding the graphene oxide. Wang et al evaluated the fluidity, viscosity and setting time of the graphene oxide reinforced cement. A review on different investigations performed on the graphene reinforced cement can be found in Refs.…”

Section: Introductionmentioning

confidence: 99%

Response of graphene reinforced concrete to the external compressive load: A multiscale approach

Ahmadi

Ansari

Rouhi

2018

Structural Concrete

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Using a multiscale approach, the critical compressive load of a cylindrical shell made by concrete/graphene nanocomposite is computed. At the first step, using a multiscale method, the elastic modulus of concrete/graphene nanocomposites with different graphene volume percentages and sizes are evaluated. Then, the finite element method is used to obtain the critical compressive load of a cylindrical shell made by the concrete/graphene nanocomposites. It is observed that the elastic modulus and buckling load of the concrete/graphene nanocomposites are reduced by increasing the temperature. It is also shown that when the graphene sheets are directed along the external force, the mechanical properties of the concrete are improved more than the case in which the graphene sheets are randomly directed in the concrete matrix.

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Influence of graphene oxide additions on the microstructure and mechanical strength of cement

Cited by 225 publications

References 15 publications

Effects of graphene oxide on the properties and microstructures of the magnesium potassium phosphate cement paste

Effects of graphene oxide on the properties and microstructures of the magnesium potassium phosphate cement paste

The Role of Graphene Oxide on the Hydration Process and Chemical Shrinkage of Cement Composites

Response of graphene reinforced concrete to the external compressive load: A multiscale approach

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