Carbon nanotube reinforced cementitious composites: An overview

Liew, K.M.; Kai, M.F.; Zhang, Luwen

doi:10.1016/j.compositesa.2016.10.020

Cited by 222 publications

(86 citation statements)

References 144 publications

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“…Secondly, the GO can decrease the flow when you compare the mixture A75G25 and A75G25GO. It is because of the large Ace* : pulverized RC-LFS replaced by 25% of α semi-hydrate gypsum aspect ratio and nucleation effect [1,23]. While the increasing flow of the mixture A100GO is because the increasing the air content by the GO.…”

Section: Flow Air Content Of Fresh Mixturesmentioning

confidence: 99%

“…Thus, the concrete with GO shows relatively better engineering performance. Finally, it's also believed that GO nanosheet can provide the crack-bridging effect which has a positive effect on crack resistance [1,2,23]. Base on the previous researches, GO can provide both physical reinforcement and chemical reinforcement at the same time.…”

Section: Flexural Compressive Strength and The Microstructurementioning

confidence: 99%

“…The improvement can be summarized as four main reasons. First of all, the function group on the surface of graphene oxide provide high bonding strength between GO and hydrations (such as C-S-H and calcium hydroxide) of cement [1,2,23]. Secondly, as nanomaterial, GO can increase the load-transfer efficiency from cement matrix to the reinforcement [2].…”

Section: Flexural Compressive Strength and The Microstructurementioning

confidence: 99%

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Strength Properties and Micro-structure of Steel Slag Based Hardened Cementitious Composite with Graphene Oxide

Li¹,

Kim²

2017

MATEC Web Conf.

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Abstract. For the rapid hardening of concrete, various types of calcium aluminate composite have been used for special purpose as shotcrete or rapid repairing in construction field. However, high cost of calcium aluminates is demerit in the point of expanding usage. In recent years, a new binder for rapid hardening has been introduced as the pulverized ladle furnace slag (RC-LFS) with main components of C12A7 and β-C2S. Like other traditional cementitious materials, it's use will preserve natural resources and has high environmental advantage with economic efficiency, by transferring the industry byproducts into high value materials. Even though flake state, graphene oxide has high tensile strength and electric conductivity. Then, it can be used to increase strength and thermal properties of concrete and its efficiency depends on the dispersion in the cement matrix. In this paper, we used graphene oxide for increasing the engineering properties in RC-LFS concrete with GGBFS. Test results showed that the 0.05w% of graphene oxide increase the flexural strength to 26% and compressive strength to 16%.

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Section: Flow Air Content Of Fresh Mixturesmentioning

confidence: 99%

Section: Flexural Compressive Strength and The Microstructurementioning

confidence: 99%

Section: Flexural Compressive Strength and The Microstructurementioning

confidence: 99%

See 1 more Smart Citation

Strength Properties and Micro-structure of Steel Slag Based Hardened Cementitious Composite with Graphene Oxide

Li¹,

Kim²

2017

MATEC Web Conf.

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“…Due to their exceptional mechanical properties, CNTs have been extensively used in research and test activity as reinforcing fibres in cement and concrete. Four main reinforcing mechanisms have been identified in cementitious matrices with added CNTs . The primary one is the crack bridging mechanism, as CNTs can bridge gaps in the range of 10 to 10 3 nm within hydration products .…”

Section: Introductionmentioning

confidence: 99%

“…Four main reinforcing mechanisms have been identified in cementitious matrices with added CNTs. 6 The primary one is the crack bridging mechanism, as CNTs can bridge gaps in the range of 10 to 10 3 nm within hydration products. 7,8 Moreover, the bridging effect of CNTs provides efficient load transfer from the matrix to the CNTs within the composites and delays crack growth.…”

Section: Introductionmentioning

confidence: 99%

An investigation of the beneficial effects of adding carbon nanotubes to standard injection grout

Restuccia

López

Ferro

et al. 2017

Fatigue Fract Eng Mat Struct

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Mortar grouting is often used in masonry constructions to mitigate structural decay and repair damage by filling cracks and voids, resulting in an improvement in mechanical properties. This paper presents an original experimental investigation on grout with added carbon nanotubes (CNTs). The samples were prepared with different percentages of CNTs, up to 1.2 wt% with respect to the binder, and underwent three‐point bending tests in crack mouth opening displacement mode and compressive tests. The results showed that very small additions (up to 0.12 wt% of CNTs) increased not only flexural and compressive strengths (+73% and 35%, respectively, in comparison with plain mortar) but also fracture energy (+80%). These results can be explained on the basis of a reduction in porosity, as evidenced by mercury intrusion porosimetry, as well as by a crack bridging mechanism and by the probable formation of nucleation sites for hydration products, as observed through scanning electron microscopy.

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Modeling and statistical understanding: The effect of carbon nanotube on mechanical properties of recycled polycaprolactone/epoxy composites

Wang

Akobi

Nikaeen

et al. 2020

J of Applied Polymer Sci

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Recycling of polymer composites has been explored in an attempt to reutilize materials. Several efforts have opted to address this subject from many perspectives including mechanical, chemical, and thermal recycling. Others have also delved into the self-healing materials to remedy this dilemma. However, few studies have delved into understanding the role of carbon nanotube (CNT) in self-healing based recycled polymer composites. Therefore, in this study, experimental and simulation tools were utilized to understand the recycling process when CNTs were incorporated within recycled polycaprolactone/epoxy composites. A polynomial regression model, as a facile approach, was established to simulate the process-property relationship, which is essential for the successful implementation of the future of manufacturing. It found that, by adding CNTs, a reduction in the determined degree of crystallization was induced which correlated with the obtained reduction in the modulus and toughness. Strategies for enhancing mechanical properties have been pointed out for future endeavors.

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Carbon nanotube reinforced cementitious composites: An overview

Cited by 222 publications

References 144 publications

Strength Properties and Micro-structure of Steel Slag Based Hardened Cementitious Composite with Graphene Oxide

Strength Properties and Micro-structure of Steel Slag Based Hardened Cementitious Composite with Graphene Oxide

An investigation of the beneficial effects of adding carbon nanotubes to standard injection grout

Modeling and statistical understanding: The effect of carbon nanotube on mechanical properties of recycled polycaprolactone/epoxy composites

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