Enhanced transport properties of graphene oxide based cement composite material

Indukuri, Chandra Sekhar Reddy; Nerella, Ruben

doi:10.1016/j.jobe.2021.102174

Cited by 32 publications

(26 citation statements)

References 35 publications

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“…When GO content was 0.04%, the D RCM value was decreased by 46.5%, compared to plain sample M. This trend indicated that the chloride corrosion resistance of cement mortar could be improved by GO incorporation, which hindered the migration of chloride ions. This inference is in agreement with previous studies [ 15 , 46 ], which concluded that the addition of GO could improve chloride diffusion resistance.…”

Section: Resultssupporting

confidence: 94%

“…Devi et al [ 14 ] concluded that by adding a small amount of GO, durability could be greatly improved for concrete incorporated with 100% recycled concrete aggregate. Indukuri et al [ 15 ] showed that the flexural and compressive strengths of GO cement composites increased by 77.70% and 47.61%, respectively. In addition, the water sorption capacity, chloride migration coefficient, and chloride penetration depth of cement composite specimens with 0.03 wt.% GO decreased by 14.5%, 30%, and 40.47%, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Use of Graphene Oxide in Layered Cement Mortar

Liu

Chen

et al. 2022

Materials

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Graphene oxide (GO) has been found to be an attractive nanomaterial to improve the properties of cementitious composites. However, the use of GO in the industry is limited by its high cost. To achieve a higher cost/performance ratio, GO can be strategically applied in certain parts of cementitious composites structure according to the principle of functionally graded materials. In this study, graded distribution of GO in cement mortar was achieved by sequentially casting a fresh GO-incorporated cement layer on another cement mortar layer. The mechanical properties, especially flexural strength, of layered cement mortar were found to be dependent on the GO content, the delay time, and the interface formed due to layering fabrication. With the GO incorporated in the tensile region only (30% of the total depth), the flexural strength of the layered beam attained 90.91% of that of the beam, with GO uniformly distributed throughout the sample. Based on the results of rapid chloride migration tests, when 12 mm GO-incorporated cement mortar layer was used, the chloride migration coefficient was reduced by 21.45%. It was also found that the measured chloride migration coefficient of layered cement mortar agreed with the series model. The present investigation provides an efficient approach to use GO in cement-based materials from the perspective of mechanical and durability properties.

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Section: Resultssupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Efficient Use of Graphene Oxide in Layered Cement Mortar

Liu

Chen

et al. 2022

Materials

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“…The service life of a building and its load-bearing capacity mainly depends upon durability and strength. Structures' service life is identified as the duration under which it can sustain an acceptable and safe performance level, keeping in view all the environmental restraints [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…The construction industry is an ever-growing industry with the tendency to move towards sustainability and optimisation. To cover this aim, researchers have focused on building more durable and stronger binders by improving the physical, mechanical, microstructural, and transport properties of cementitious composites utilising different approaches [2,[12][13][14][15][16][17][18][19][20][21]. The ease with which liquids and gases can enter the cementitious network represents its transport properties [22].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide-incorporated cementitious composites: a thorough investigation

et al. 2022

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“…This "bridging effect" allows the hydration products to make contact with the formed network earlier, improving the macro-mechanical properties of the cement-based materials [4][5][6]. Indukuri et al [7] added 0.03% GO to increase such materials' flexural and compressive strength by 77.70% and 47.61%, respectively. According to the scanning electron microscope (SEM), GO effectively decreases the voids and defects in cement-based materials, making the arrangement of hydration products tighter.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Graphene Oxide-Silica Nano-Hybrid Materials on the Rheological Properties, Mechanical Properties, and Microstructure of Cement-Based Materials

et al. 2022

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Despite their excellent performance, two-dimension nanomaterials have certain limitations in improving the performance of cement-based materials due to their poor dispersity in the alkaline environment. This paper has synthesized a new two-dimension stacked GO-SiO2 (GOS) hybrid through the sol-gel method. Nano-SiO2 is coated on the surface of GO with wrinkling characteristics, and the atomic ratio of C, O, and Si in GOS is 1:1.69:0.57. The paper discusses the impacts on the spreading, Marsh cone flow time, rheological properties, mechanical properties, and microstructure of cement-based materials for the GOS at different mixing quantities. Furthermore, with the same mixing quantity of 0.01%, the influences on the dispersity, flow properties, rheological parameters, and mechanical properties of GOS and graphene oxide (GO) are compared. Lastly, fuzzy matrix analysis has been adopted to analyze the comprehensive performance of cement-based materials containing GOS. The research results indicate that, compared with the reference sample, the spreading for the GOS cement mortar with 0.01% mixing quantity was reduced by 4.76%, the yield shear stress increased by 37.43%, and the equivalent plastic viscosity was elevated by 2.62%. In terms of the 28 d cement pastes, the compressive and flexural strength were boosted by 27.17% and 42.86%, respectively. According to the optical observation, GOS shows better dispersion stability in the saturated calcium hydroxide solution and simulated pore solution than GO. Compared with the cement-based materials with the same mixing quantity (0.01%), GOS has higher spreading, lower shear yield stress, and higher compressive and flexural strength than GO. Finally, according to the results of fuzzy matrix analysis, when the concentration of GOS is 0.01%, it presents a more excellent comprehensive performance with the highest score. Among the performance indicators, the most significant improvement was in the flexural properties of cement-based materials, which increased from 8.6 MPa to 12.3 MPa on the 28 d.

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Enhanced transport properties of graphene oxide based cement composite material

Cited by 32 publications

References 35 publications

Efficient Use of Graphene Oxide in Layered Cement Mortar

Efficient Use of Graphene Oxide in Layered Cement Mortar

Graphene oxide-incorporated cementitious composites: a thorough investigation

The Effects of Graphene Oxide-Silica Nano-Hybrid Materials on the Rheological Properties, Mechanical Properties, and Microstructure of Cement-Based Materials

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