A critical review on research progress of graphene/cement based composites

Yang, Haibin; Cui, Hongzhi; Tang, Waiching; Li, Zongjin; Han, Ningxu; Xing, Feng

doi:10.1016/j.compositesa.2017.07.019

Cited by 292 publications

(126 citation statements)

References 96 publications

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“…Cement-based materials behave like typical porous, brittle materials [1][2][3]. Brittleness makes the cement material easy to crack under the action of external force, which adversely affects the bearing capacity and durability of cement concrete structures.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Microstructure of Polyvinyl Alcohol (PVA) Modified Cement Mortar

Fan

Deng

et al. 2019

Applied Sciences

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The mechanical properties of cement mortars with 0~2.0% (by mass) polyvinyl alcohol (PVA) were experimentally studied, and the effects of PVA incorporation on the hydration products and microstructure of the cement mortar were determined with differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The results show that the rational content of PVA formed evenly dispersed network-like thin films within the cement matrix, and these network-like films can bridge cracks in the cement matrix and improve the mechanical properties of the cement mortar. Over-incorporation of PVA may result in the formation of large piece polymer films that coat the cement particles, delay the hydration of the cement mortar and adversely affect its performance. The mechanical properties of the cement mortar show a significant increase and then decrease with a change in the PVA incorporation. When the PVA content was 0.6% and 1.0%, the mortar had the best compressive and flexural strengths, respectively. The compressive strength of the cement mortar increased by 12.15% for a PVA content of 0.6%, and the flexural strength of the cement mortar increased by 24.83% for a PVA content of 1.0%.change occurs under 140 • C), light, and chemical stability but also has excellent gas and water barrier properties (the inside of polyvinyl alcohol can remain dry under high humidity) [19,20]. The good physical and chemical properties of polyvinyl alcohol and its formed films enable its wide use in the textile, construction, chemical, and papermaking industries, to name a few.Owing to the excellent performance as described above, researchers have utilized PVA to modify the mechanical properties of a cement-based material. Singh et al. [21] found that the addition of 3% of PVA could increase the compressive strength of cement mortar about 12 % due to there exists chemical interaction between PVA and cement hydration. This chemical interaction is effective in improving the interfacial bond between cement hydration and aggregates. Moreover, the chemical products could fill the pores of the cement matrix, resulting in the mechanical properties of the cement matrix increase greatly. Similarly, Kapen et al. [22] demonstrated that the flexural strengths of cement mortar increased by 21% after loading 1% PVA when cured in dry condition, respectively. They stated that this improvement was mainly attributed to the formation of PVA film within the cement matrix. Kim et al. [23] found that the improvement in bond strength after loading PVA seems to arise from suppression of the porous interfacial transition zone and inhibition of calcium hydroxide nucleation on the aggregate surface.Using PVA to enhance the properties of cement composites has attracted extensive attention. However, the previous research mainly focused on the hydration and mechanical properties after loading a mono content of PVA, there is limited information on the effect of PVA with different content on the fresh properties and ...

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Microstructure of Polyvinyl Alcohol (PVA) Modified Cement Mortar

Fan

Deng

et al. 2019

Applied Sciences

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“…(2) Its reduces the self-weight of structure thus allowing innovative designs and consumption of less construction materials. (3) It reduces the construction cycle time: due to high early strength of composite material, the curing time is shortened and the formwork can be removed quicker, hence making the overall project economical [5]. (4) It enhances durability by reducing occurrence of cracks and porosity of composite material which in turn will reduce the maintenance and repair activities.…”

Section: Introductionmentioning

confidence: 99%

Influence of Graphene Nanosheets on Rheology, Microstructure, Strength Development and Self-Sensing Properties of Cement Based Composites

et al. 2018

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In this research, Graphene oxide (GO), prepared by modified hammer method, is characterized using X-ray Diffraction (XRD), Fourier Transform Infrared (FT-IR) Spectrometry and Raman spectra. The dispersion efficiency of GO in aqueous solution is examined by Ultraviolet-visible spectroscopy and it is found that GO sheets are well dispersed. Thereafter, rheological properties, flow diameter, hardened density, compressive strength and electrical properties of GO based cement composite are investigated by incorporating 0.03% GO in cement matrix. The reasons for improvement in strength are also discussed. Rheological results confirm that GO influenced the flow behavior and enhanced the viscosity of the cement based system. From XRD and Thermogravimetric Analysis (TGA) results, it is found that more hydration occurred when GO was incorporated in cement based composite. The GO based cement composite improves the compressive strength and density of mortar by 27% and 1.43%, respectively. Electrical properties results showed that GO-cement based composite possesses self-sensing characteristics. Hence, GO is a potential nano-reinforcement candidate and can be used as self-sensing sustainable construction material.

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“…In general, the spectrum of pristine graphite has a prominent G peak at 1584.5 cm −1 that corresponds to first-order scattering of the E2g mode in the Brillouin zone. This indicates that the structure of graphite is regular [7,[42][43][44][45]. In the Raman spectrum of GO, the G peak is broadened and the D peak is prominent, thus indicating that the C=C bonds in the graphite layers are destroyed by oxidation and that several 1200 1288 1376 1464 1552 1640 1728 1816 1904 1992 2080 2168 2256 2344 2432 2520 2608 2696 2784 2872 2960 1200 1288 1376 1464 1552 1640 1728 1816 1904 1992 2080 2168 2256 2344 2432 2520 2608 2696 2784 2872 2960 1202 1290 1378 1466 1554 1642 1730 1818 1906 1994 2082 2170 2258 2346 2434 2522 2610 2698 2786 2874 2962 1200 1288 1376 1464 1552 1640 1728 1816 1904 1992 2080 2168 2256 2344 2432 2520 2608 2696 2784 2872 2960 1200 1288 1376 1464 1552 1640 1728 1816 1904 1992 2080 2168 2256 2344 2432 2520 2608 2696 2784 2872 2960 1202 1290 1378 1466 1554 1642 1730 1818 1906 1994 2082 2170 2258 2346 2434 2522 2610 2698 2786 2874 2962 1202 1290 1378 1466 1554 1642 1730 1818 1906 1994 2082 2170 2258 2346 2434 2522 2610 2698 2786 2874 2962 1200 1288 1376 1464 1552 1640 1728 1816 1904 1992 2080 2168 2256 2344 2432 2520 2608 2696 2784 2872 reduction method caused an increase in D / G [47][48][49][50].…”

Section: Resultsmentioning

confidence: 97%

“…Table 1 presents the 6 Journal of Nanomaterials average data obtained from the Raman spectra for the three test points. In the Raman spectra, the D and G peaks, located at approximately 1324-1346 cm −1 and 1490-1691 cm −1 , respectively, are the predominant features [7,[41][42][43][44]. In general, the spectrum of pristine graphite has a prominent G peak at 1584.5 cm −1 that corresponds to first-order scattering of the E2g mode in the Brillouin zone.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, the addition of nanoscale particles to NFs can result in considerably lower pressure drops, blocks, wear, and energy consumption in heat exchange system pipelines, thereby improving the availability of NFs. Therefore, NFs have numerous potential applications in engineering, especially in the fields of electromechanics, air conditioning, automobiles, manufacturing, machining, solar energy, building structures, and biomedicine [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and Characterization of Carbon-Based Nanofluids through the Water Vortex Trap Method

Cheng

Teng

2018

Journal of Nanomaterials

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This study designed an efficient one-step method for synthesizing carbon-based nanofluids (CBNFs). The method employs the vortex trap method (VTM) and an oxygen-acetylene flame, serving as a carbon source, in a manufacturing system of the VTM (MSVTM). The flow rate ratio of O 2 and C 2 H 2 was adjusted to form suitable combustion conditions for the reduced flame. Four flow rate ratios of O 2 and C 2 H 2 were used: 1.5 : 2.5 (V1), 1.0 : 2.5 (V2), 0.5 : 2.5 (V3), and 0 : 2.5 (V4). The morphology, structure, particle size, stability, and basic physicochemical characteristics of the obtained carbon-based nanomaterials (CBNMs) and CBNFs were investigated using transmission electron microscopy, field-emission scanning electron microscopy, X-ray diffraction, Raman spectrometry, ultraviolet-visible-near-infrared spectrophotometry, and a particle size-zeta potential analyzer. The static positioning method was utilized to evaluate the stability of the CBNFs with added EP dispersants. The evaluation results revealed the morphologies, compositions, and concentrations of the CBNFs obtained using various process parameters, and the relation between processing time and production rate was determined. Among the CBNMs synthesized, those obtained using the V4-0 flow rate ratio had the highest stability when no EP dispersant was added. Moreover, the maximum enhancement ratios of the viscosity and thermal conductivity were also obtained for V4-0: 4.65% and 1.29%, respectively. Different types and concentrations of dispersants should be considered in future research to enhance the stability of CBNFs for further application.

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A critical review on research progress of graphene/cement based composites

Cited by 292 publications

References 96 publications

Mechanical Properties and Microstructure of Polyvinyl Alcohol (PVA) Modified Cement Mortar

Mechanical Properties and Microstructure of Polyvinyl Alcohol (PVA) Modified Cement Mortar

Influence of Graphene Nanosheets on Rheology, Microstructure, Strength Development and Self-Sensing Properties of Cement Based Composites

Fabrication and Characterization of Carbon-Based Nanofluids through the Water Vortex Trap Method

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