Workability, microstructure, strength properties and durability properties of graphene oxide reinforced cement paste

Indukuri, Chandra Sekhar Reddy; Nerella, Ruben; Madduru, Sri Rama Chand

doi:10.1080/14488353.2020.1721952

Cited by 30 publications

(6 citation statements)

References 26 publications

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“…Among them, the compressive strength test uses an electrohydraulic servo compressive testing machine to pressurize the cube specimen; when the specimen is close to failure, stop adjusting the throttle until it breaks, record its load-displacement curve, and multiply the test result by a conversion factor of 0.95. The flexural strength test uses a flexural testing machine to test the prismatic specimen [ 10 ]. The test result needs to be multiplied by a conversion factor of 0.85.…”

Section: Methodsmentioning

confidence: 99%

Application of Carbon Nanofiber-Modified Concrete in Industrial Building Design

Liu

2023

International Journal of Analytical Chemistry

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In order to explore the influence law and action mechanism of carbon nanofibers on the basic mechanical properties of concrete, the author proposes the mechanical properties and microscopic mechanism of carbon nanofiber-modified concrete. Concrete was prepared with different dosages of carbon nanofibers, and the compressive strength, flexural strength, and splitting strength of carbon nanofiber-modified concrete were tested, and the modification mechanism was explored. Experimental results show that an appropriate amount of carbon nanofibers can improve the mechanical properties of concrete. When the dosage is 0.3%, the mechanical properties of carbon nanofiber-modified concrete are the best, and its compressive strength, flexural strength, and split tensile strength are increased by 9.2%, 13.2%, and 17.5%, respectively, compared with plain concrete. Carbon nanofibers can form a three-dimensional network structure inside the concrete, which can improve the microscopic morphology of the concrete, enhance the toughness and integrity of the concrete, fill the pore defects inside the concrete, refine the pore size distribution, and consume part of the fracture failure energy when the concrete is damaged.

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Section: Methodsmentioning

confidence: 99%

Application of Carbon Nanofiber-Modified Concrete in Industrial Building Design

Liu

2023

International Journal of Analytical Chemistry

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“…Recent studies have shown that, the addition of GO improves the interfacial transition zone (ITZ) microstructure reducing its thickness and porosity [ 150 , 151 ]. Substantial reduction in water permeability was also reported [ 152 ]. Inserting a really small dosage like 0.04–0.05 wt% of GO increases the compressive strength and flexural strength of Portland cement by 33–46% and 59–75%, respectively [ 152 , 153 ].…”

Section: Nanomaterials Typically Used In Cement-based Materialsmentioning

confidence: 81%

“…Substantial reduction in water permeability was also reported [ 152 ]. Inserting a really small dosage like 0.04–0.05 wt% of GO increases the compressive strength and flexural strength of Portland cement by 33–46% and 59–75%, respectively [ 152 , 153 ]. Similarly, the incorporation of 0.1% reduced GO (rGO) improved the compressive strength along with other properties (water absorption, ultrasonic pulse velocity, carbonation and fire resistance) [ 154 ].…”

Section: Nanomaterials Typically Used In Cement-based Materialsmentioning

confidence: 81%

Nanomaterials in Cementitious Composites: An Update

et al. 2021

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This review is an update about the addition of nanomaterials in cementitious composites in order to improve their performance. The most common used nanomaterials for cementitious materials are carbon nanotubes, nanocellulose, nanographene, graphene oxide, nanosilica and nanoTiO2. All these nanomaterials can improve the physical, mechanical, thermal and electrical properties of cementitious composites, for example increase their compressive and tensile strength, accelerate hydration, decrease porosity and enhance fire resistance. Cement based materials have a very complex nanostructure consisting of hydration products, crystals, unhydrated cement particles and nanoporosity where traditional reinforcement, which is at the macro and micro scale, is not effective. Nanomaterials can reinforce the nanoscale, which wasn’t possible heretofore, enhancing the performance of the cementitious matrix.

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“…[6][7][8][9] Incorporation of low dosages of GO such as 0.04% can increase the compressive and flexural strength by 46.6% and 75%, respectively. 10 It is worth noting that GO effectively improves the pore and microstructure of cement mixtures. 4,11 Based on the study by Duan et al, 12 the porosity decreased by about 6.5% by adding 0.035% GO to the cement paste sample.…”

Section: Introductionmentioning

confidence: 99%

Influence of ground granulated blast furnace slag on mechanical properties and durability of graphene oxide‐reinforced cementitious mortars

Hosseini

Atrian

Mirvalad

et al. 2023

Structural Concrete

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In recent decades, considering environmental issues, partial replacement of Portland cement with supplementary cementitious material (SCM), namely ground granulated blast furnace slag (GGBS), has been in the spotlight of research. On the other hand, carbon‐based nanomaterials, especially graphene oxide (GO), are recognized as an extraordinary additive with special characteristics that can be included in cementitious materials. In this research, the impact of GGBS on the mechanical properties and durability of GO‐modified mortars was investigated at 28 and 90 days. The results demonstrate that by increasing the content of GGBS, a decrease in the flexural and compressive strength compared to plain cement sample was seen. On the other hand, incorporation of GGBS and GO led to higher strength compared to GO‐cement mortar. Also, the compressive strength of the sample containing 20% GGBS and 0.03% GO was 38.7% higher than the plain cement sample at 90 days. On the other hand, adding GGBS to a GO‐reinforced sample resulted in a more durable specimen against chloride and acid environments. The sample made of 40% GGBS in GO‐modified mortar not only has the best efficiency in harsh environments but also has the lowest water absorption. This mortar improved the migration coefficient, mass loss in HCl solution, and initial sorptivity by 20.1%, 57.7%, and 37.1%, respectively. Moreover, the mentioned sample had a denser microstructure with smaller cracks compared to other samples, based on scanning electron microscope (SEM) images.

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Workability, microstructure, strength properties and durability properties of graphene oxide reinforced cement paste

Cited by 30 publications

References 26 publications

Application of Carbon Nanofiber-Modified Concrete in Industrial Building Design

Application of Carbon Nanofiber-Modified Concrete in Industrial Building Design

Nanomaterials in Cementitious Composites: An Update

Influence of ground granulated blast furnace slag on mechanical properties and durability of graphene oxide‐reinforced cementitious mortars

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