Incorporating graphene oxide in cement composites: A study of transport properties

Mohammed, Abbas; Sanjayan, Jay; Duan, Wenhui

doi:10.1016/j.conbuildmat.2015.01.083

Cited by 340 publications

(192 citation statements)

References 28 publications

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“…[13][14][15][16][17] Whereas, GO has the negative influence on the fluidity of cement. 18,19 Certainly, fluidity is an important property of cement; the good fluidity was the premise of workability and pumpability in actual using process. The decrease of fluidity would lead the low durability of cement; the significance of sustainability in the construction industry has been recognized in recent years, especially with respect to the consumption of energy and natural resources.…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of graphene oxide nanosheets on cement

Wang

Yao

et al. 2016

RSC Adv.

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aThe graphene oxide (GO) nanosheets modified cement tremendously improved their mechanical properties but decreased the fluidity. The adsorption characteristics between GO and cement plays a pivotal role for the influence on fluidity. In this paper, the adsorption characteristics of graphene oxide nanosheets on cement were investigated by scanning electron microscope (SEM), total organic carbon (TOC), Fourier transform infrared spectra (FTIR) and XPS. The results show that GO nanosheets have a strong adsorption ability on the cement surface. And the adsorption data was best fitted with the Freundlich adsorption isotherm model and described by the pseudo-second order kinetics model, the adsorption process contained the chemical reaction that the -COOH on the edge of GO nanosheets reacted with the metal cations. The adsorption layer thickness of GO nanosheets on cement was about 10.16 nm.

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Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of graphene oxide nanosheets on cement

Wang

Yao

et al. 2016

RSC Adv.

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“…In addition, GO, as a nano-scale material, can easily fill the pores of the cement matrix, and make the material more solid or denser. Note that, if the matrix is denser in a cementitious material, the mechanical properties of the material would generally be better, as is demonstrated in literature [15]. …”

Section: Mechanical Propertiesmentioning

confidence: 49%

Effect of Graphene Oxide on Mechanical Properties of Recycled Mortar

Fang

Long

Wei

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. The use of recycled aggregate as replacement of natural aggregate has increased in recent years in order to reduce the high consumption of natural resources in construction industry. This paper presents an experimental investigation on the effect of graphene oxide (GO) on the mechanical properties of recycled mortar. It is showed that the recycled mortar with GO has a better mechanical properties than the recycled mortar without GO. Microstructural analysis of the recycled mortar with GO showed to have much denser and better crystallization of hydration product.

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“…Influence of graphene oxide on the on microstructure and mechanical properties of cement composites were evaluated by Lv et al They observed that the toughness of cement composites can be improved by introducing the graphene oxide. Mohammed et al investigated the transport characteristics of graphene oxide/cement composites by using the water sorptivity, chloride penetration and mercury intrusion porosimetry tests.…”

Section: Introductionmentioning

confidence: 99%

“…Influence of graphene oxide on the on microstructure and mechanical properties of cement composites were evaluated by Lv et al 48 They observed that the toughness of cement composites can be improved by introducing the graphene oxide. Mohammed et al 49 A multiscale method is used herein to evaluate the critical compressive load of the concrete/graphene nanocomposite under the external compressive load. Initially, Young's moduli of the concrete/graphene nanocomposites are computed by using the multiscale approach.…”

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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Incorporating graphene oxide in cement composites: A study of transport properties

Cited by 340 publications

References 28 publications

Adsorption characteristics of graphene oxide nanosheets on cement

Adsorption characteristics of graphene oxide nanosheets on cement

Effect of Graphene Oxide on Mechanical Properties of Recycled Mortar

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

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