Mechanical behavior of multilayer GO carbon-fiber cement composites

Chen, Zeng-shun; Zhou, Xiao Ping; Wang, Xu; Guo, Ping

doi:10.1016/j.conbuildmat.2017.10.094

Cited by 72 publications

(25 citation statements)

References 27 publications

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“…In addition, the SEM figure in [20] verifies the above conjecture. According to Figure 14, with the adding of 0.06 wt% GO nanosheets, cracks and pores in the cement paste tend to decrease and shrink, as shown in Figure 14b.…”

Section: Discussionsupporting

confidence: 76%

“…Qin et al [19] have found that when 0.01 wt% and 0.03 wt% GO was added into concrete containing a certain amount of fly ash, the influence on flexural strength was greater than the influence on compressive strength. Chen et al [20] discovered similar trends for GO carbon-fiber cement composites. Li et al [21] have measured the flexural strength, compressive strength and tensile strength of cement paste with GO at dosage of 0.02 wt% and 0.04 wt% at the age of 3 d, 7 d and 28 d. According to the results, GO nanosheets had the most obvious influence on compressive strength, followed by the influence on flexural strength and tensile strength.…”

Section: Introductionmentioning

confidence: 72%

“…Image of SEM[20]: (a) test piece of ordinary cement; (b) test piece of GO cement (0.06 wt%); (c) test piece of GO cement (1.00 wt%).…”

mentioning

confidence: 99%

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Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets

Chen

Hua

et al. 2020

Materials

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Graphene oxide (GO) has been widely used as an additive due to its numerous unique properties. In this study, the compressive strength, flexural strength and elasticity modulus of concrete containing 0.02 wt%, 0.05 wt % and 0.08 wt % GO, and its dry shrinkage performance have been experimentally investigated. After the sample preparation, apparatus for compression test and flexural test were used to test the relevant properties of concrete containing GO. The dial indicators were used to measure the shrinkage of samples. The results indicate that GO can considerably improve the compressive strength, flexural strength, and elasticity modulus of concrete at the concrete age of 28 days by 4.04–12.65%, 3.8–7.38%, and 3.92–10.97%, respectively, which are substantially smaller than the increment at the age of 3 d by 5.02–21.51%, 4.25–13.06%, and 6.07–27.45% under a water-cement ratio of 0.35. It was also found that GO can increase the shrinkage strain of concrete. For example, at the age of 60 days, 0.02 wt%, 0.05 wt% and 0.08 wt% GO can increase the shrinkage strain of ordinary concrete by 1.99%, 5.79% and 7.45% respectively under a water-cement ratio of 0.49. The study has advanced our understanding on mechanical and shrinkage behavior of concrete containing GO.

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Section: Discussionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 72%

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Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets

Chen

Hua

et al. 2020

Materials

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“…The improvement of cement properties through the addition of fibers of different natures (steel, glass, synthetic, and natural) and sizes (macro and microfiber) has been in practice for decades [1,2,3,4,5]. Most researchers have reported that cellulosic fibers are not only non-toxic, renewable, cost-effective, and abundant compared to other fibers (e.g., asbestos, polyvinyl alcohol (PVOH), and polypropylene (PP)), but also provide adequate bonding capacity to cement-based matrices for substantial improvements of toughness, ductility, flexural capacity, and impact resistance [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

Nanocelluloses: Natural-Based Materials for Fiber-Reinforced Cement Composites. A Critical Review

et al. 2019

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Nanocelluloses (NCs) are bio-based nano-structurated products that open up new solutions for natural material sciences. Although a high number of papers have described their production, properties, and potential applications in multiple industrial sectors, no review to date has focused on their possible use in cementitious composites, which is the aim of this review. It describes how they could be applied in the manufacturing process as a raw material or an additive. NCs improve mechanical properties (internal bonding strength, modulus of elasticity (MOE), and modulus of rupture (MOR)), alter the rheology of the cement paste, and affect the physical properties of cements/cementitious composites. Additionally, the interactions between NCs and the other components of the fiber cement matrix are analyzed. The final result depends on many factors, such as the NC type, the dosage addition mode, the dispersion, the matrix type, and the curing process. However, all of these factors have not been studied in full so far. This review has also identified a number of unexplored areas of great potential for future research in relation to NC applications for fiber-reinforced cement composites, which will include their use as a surface treatment agent, an anionic flocculant, or an additive for wastewater treatment. Although NCs remain expensive, the market perspective is very promising.

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“…Yu et al [5] found that GO nanosheets could reduce the mobility of cement paste and increase its yield stress and plastic strength. Chen et al [21] observed the apparent structure through SEM and proved that the cracking and pores in the cement paste tended to reduce and shrink with the adding of GO nanosheets, making the microstructure more compact.…”

Section: Introductionmentioning

confidence: 99%

Modeling Shrinkage and Creep for Concrete with Graphene Oxide Nanosheets

Chen

Hua

et al. 2019

Materials

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In this study, the shrinkage and creep of concrete containing graphene oxide (GO) nanosheets were experimentally and theoretically investigated. Experiments for the shrinkage and creep of concrete with 0.02% and 0.08% GO nanosheets by the weight of cement and common concrete were carried out. Subsequently, the influence of GO nanosheets on the shrinkage and creep of concrete was analyzed and discussed. A modified model was developed to accurately predict the shrinkage and creep of concrete containing GO nanosheets after models for predicting shrinkage and creep of common concrete were compared and the influential factors and application scope were determined. Results indicate that: (1) GO nanosheets can increase the shrinkage strain and reduce the creep coefficient of concrete, and (2) a modified ACI209 (92) model can accurately predict the shrinkage and creep of concrete containing GO nanosheets. Factors considering concrete strength can be introduced in the model to improve the model accuracy.

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Mechanical behavior of multilayer GO carbon-fiber cement composites

Cited by 72 publications

References 27 publications

Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets

Mechanical Properties and Shrinkage Behavior of Concrete-Containing Graphene-Oxide Nanosheets

Nanocelluloses: Natural-Based Materials for Fiber-Reinforced Cement Composites. A Critical Review

Modeling Shrinkage and Creep for Concrete with Graphene Oxide Nanosheets

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