Mechanical properties and microstructure of multilayer graphene oxide cement mortar

2021 ◽  
Author(s):  
Jun Liu ◽  
Luxi Zhao ◽  
Fei Chang ◽  
Lin Chi
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Cement Mortar ◽  
Multilayer Graphene

scholarly journals Preparation and Mechanical Properties of Graphene Oxide: Cement Nanocomposites

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Fakhim Babak ◽  
Hassani Abolfazl ◽  
Rashidi Alimorad ◽  
Ghodousi Parviz
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Graphene Oxide ◽  
Cement Mortar ◽  
Cement Matrix ◽  
Cement Composites ◽  
Xrd Diffraction ◽  
Calcium Silicate Hydrates ◽  
The Matrix ◽  
Scanning Electron

We investigate the performance of graphene oxide (GO) in improving mechanical properties of cement composites. A polycarboxylate superplasticizer was used to improve the dispersion of GO flakes in the cement. The mechanical strength of graphene-cement nanocomposites containing 0.1–2 wt% GO and 0.5 wt% superplasticizer was measured and compared with that of cement prepared without GO. We found that the tensile strength of the cement mortar increased with GO content, reaching 1.5%, a 48% increase in tensile strength. Ultra high-resolution field emission scanning electron microscopy (FE-SEM) used to observe the fracture surface of samples containing 1.5 wt% GO indicated that the nano-GO flakes were well dispersed in the matrix, and no aggregates were observed. FE-SEM observation also revealed good bonding between the GO surfaces and the surrounding cement matrix. In addition, XRD diffraction data showed growth of the calcium silicate hydrates (C-S-H) gels in GO cement mortar compared with the normal cement mortar.

Physiochemical and mechanical properties of reduced graphene oxide–cement mortar composites: Effect of reduced graphene oxide particle size

2020 ◽  
Vol 250 ◽  
pp. 118832 ◽  
Author(s):  
Meisam Valizadeh Kiamahalleh ◽  
Aliakbar Gholampour ◽  
Diana N.H. Tran ◽  
Togay Ozbakkaloglu ◽  
Dusan Losic
Keyword(s):  
Mechanical Properties ◽  
Particle Size ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cement Mortar ◽  
Oxide Particle ◽  
Reduced Graphene ◽  
Oxide Particle Size

scholarly journals Effect of Graphene Oxide/Graphene Hybrid on Mechanical Properties of Cement Mortar and Mechanism Investigation

Nanomaterials ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 113 ◽  
Author(s):  
Hongfang Sun ◽  
Li Ling ◽  
Zhili Ren ◽  
Shazim Ali Memon ◽  
Feng Xing
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Graphene Oxide ◽  
Flexural Strength ◽  
Pore Size Distribution ◽  
Cement Mortar ◽  
Underlying Mechanism ◽  
Mortar Specimen ◽  
Degree Of Hydration ◽  
Cement Mortars

This paper evaluated the effect of graphene oxide/graphene (GO/GR) hybrid on mechanical properties of cement mortar. The underlying mechanism was also investigated. In the GO/GR hybrid, GO was expected to act as a dispersant for GR while GR was used as reinforcement in mortar due to its excellent mechanical properties. For the mortar specimen, flexural and compressive strength were measured at varied GO to GR ratios of 1:0, 3:1, 1:1, 1:3, and 0:1 by keeping the total amount of GO and GR constant. The underlying mechanism was investigated through the dispersibility of GR, heat releasing characteristics during hydration, and porosity of mortar. The results showed that GO/GR hybrid significantly enhanced the flexural and compressive strength of cement mortars. The flexural strength reached maximum at GO:GR = 1:1, where the enhancement level was up to 23.04% (28 days) when compared to mortar prepared with only GO, and up to 15.63% (7 days) when compared to mortar prepared with only GR. In terms of compressive strength, the enhancement level for GO:GR = 3:1 was up to 21.10% (3 days) when compared with that of mortar incorporating GO only. The enhancement in compressive strength with mortar at GO:GR = 1:1 was up to 14.69% (7-day) when compared with mortar incorporating GR only. In addition to dispersibility, the compressive strength was also influenced by other factors, such as the degree of hydration, porosity, and pore size distribution of mortar, which made the mortars perform best at different ages.

Mechanical Properties of Cement Mortar Composites Containing Graphene Oxide

2019 ◽  
pp. 141-147
Author(s):  
A. Gholampour ◽  
M. Valizadeh Kiamahalleh ◽  
D. N. H. Tran ◽  
T. Ozbakkaloglu ◽  
D. Losic
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Cement Mortar

scholarly journals Molecular dynamics simulation of the mechanical properties of multilayer graphene oxide nanosheets

RSC Advances ◽  
2017 ◽  
Vol 7 (87) ◽  
pp. 55005-55011 ◽  
Author(s):  
Xu Zhang ◽  
Shuyan Liu ◽  
Han Liu ◽  
Jinwen Zhang ◽  
Xiaoning Yang
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Graphene Oxide ◽  
Molecular Dynamics Simulation ◽  
Failure Mechanism ◽  
Md Simulation ◽  
Dynamics Simulation ◽  
Multilayer Graphene ◽  
Graphene Oxide Nanosheets ◽  
Non Equilibrium

The mechanical properties and failure mechanism of multilayer GO nanosheets were studied by non-equilibrium MD simulation.

Improvement of mechanical properties by incorporating graphene oxide into cement mortar

2017 ◽  
Vol 25 (15-16) ◽  
pp. 1313-1322 ◽  
Author(s):  
Xiangyu Li ◽  
Chenyang Li ◽  
Yanming Liu ◽  
Shu Jian Chen ◽  
C. M. Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Cement Mortar

scholarly journals Correction: Molecular dynamics simulation of the mechanical properties of multilayer graphene oxide nanosheets

RSC Advances ◽  
2018 ◽  
Vol 8 (40) ◽  
pp. 22785-22785 ◽  
Author(s):  
Xu Zhang ◽  
Shuyan Liu ◽  
Hang Liu ◽  
Jinwen Zhang ◽  
Xiaoning Yang
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Graphene Oxide ◽  
Molecular Dynamics Simulation ◽  
Dynamics Simulation ◽  
Multilayer Graphene ◽  
Graphene Oxide Nanosheets

Correction for ‘Molecular dynamics simulation of the mechanical properties of multilayer graphene oxide nanosheets’ by Xu Zhang et al., RSC Adv., 2017, 7, 55005–55011.

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