Effect of carbon nanotubes/clay hybrid composite on mechanical properties, hydration heat and thermal analysis of cement-based materials

2022 ◽  
Vol 320 ◽  
pp. 126212
Author(s):  
Supakporn Aodkeng ◽  
Sakprayut Sinthupinyo ◽  
Busaya Chamnankid ◽  
Wilasinee Hanpongpun ◽  
Arnon Chaipanich
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Thermal Analysis ◽  
Hybrid Composite ◽  
Hydration Heat ◽  
Cement Based Materials

Viscoelastic and mechanical properties of CNT-reinforced polymer-based hybrid composite materials using hygrothermal creep

2021 ◽  
Vol 29 (9_suppl) ◽  
pp. S1386-S1402
Author(s):  
S Srikant Patnaik ◽  
Tarapada Roy
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Composite Materials ◽  
Multiwalled Carbon Nanotubes ◽  
Hybrid Composite ◽  
Viscoelastic Properties ◽  
Hybrid Composites ◽  
Multiwalled Carbon ◽  
Ultrasonic Probe ◽  
Reinforced Polymer

In the present work, a combination of experimental and numerical procedure is proposed to study the effects of different hygrothermal conditions on the creep strain, viscoelastic properties of nanocomposites, and mechanical properties of such nanocomposite-based carbon fiber–reinforced polymer (CFRP) hybrid composite materials. Ultrasonic probe sonicator is used to randomly disperse the multiwalled carbon nanotubes into an epoxy to minimize agglomerations. Dynamic mechanical analysis is employed to conduct the creep tests under different hygrothermal conditions of such nanocomposite samples. The Findley power law is used to obtain the long-term creep behavior of nanocomposite materials. Prony series is used to determine the viscoelastic properties of nanocomposite material in the frequency domain. Coefficient of moisture expansion (CME) is independent of moisture concentration; thus, CME of the nanocomposite is also determined. Strength of materials and Saravanos–Chamis micromechanics (SCM) have also been utilized to obtain the mechanical properties of such hybrid composite materials under different hygrothermal conditions. It has been found that the inclusion of multiwalled carbon nanotubes in the nanocomposite and hybrid composites improves storage modulus and loss factor (i.e., tan δ) compared to the conventional CFRP-based composite materials under hygrothermal conditions.

Multifunctionalities of Nanocarbon Materials Filled Cement-Based Composites

2014 ◽  
Vol 809-810 ◽  
pp. 144-154
Author(s):  
Li Qing Zhang ◽  
Su Fen Dong ◽  
Yun Yang Wang ◽  
Bao Guo Han
Keyword(s):  
Mechanical Properties ◽  
Mechanical Property ◽  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Electrical Properties ◽  
Electromagnetic Properties ◽  
Multifunctional Composites ◽  
Cement Based Materials ◽  
Improvement Effect ◽  
Nanocarbon Materials

Materials combined with a small amount of nanomaterials offer new possibilities in developing of multifunctional composites. Nanocarbon materials (NCMs) such as carbon nanotubes/ nanofibres, and nanographite platelets have excellent intrinsic physical properties and improvement effect to matrix materials at nanoscale. They are promising fillers for improving the mechanical property and durability of cement-based materials and introducing functional properties to cement-based materials. This paper presents a comprehensive introduction about multifuntionlities of NCMs filled cement-based composites including mechanical properties, durability, electrical properties, thermal properties, electromagnetic properties, sensing property and etc.

Surface Functionalization of Carbon Nanotubes and Compressive Strength of MWCNTs-OPC

2012 ◽  
Vol 511 ◽  
pp. 171-174 ◽  
Author(s):  
Fu Xia Wang ◽  
Yu Ying Wang
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Surface Functionalization ◽  
High Performance ◽  
Multiwall Carbon Nanotubes ◽  
Reinforcing Effect ◽  
Cement Based Materials ◽  
Highly Dispersed ◽  
Functionalization Of Carbon Nanotubes ◽  
Multiwall Carbon

Due to their remarkable mechanical properties, carbon nanotubes (CNTs) are considered to be one of the most promising reinforcing materials for the next generation of high-performance cementitious composites. However, the major problem is the highly attractive van der Waals forces between CNTs, which create coherent agglomerates that prove difficult to disperse in cement based materials and reduce the fluidity of the fresh mixture. In this study, the reinforcing effect of highly dispersed multiwall carbon nanotubes (MWCNTs) at ratios of 0.05, 0.1, 0.15， 0.2 and 0.25wt.% of cement has been investigated. The results show that small amount of effectively dispersed MWCNTs can significantly increase the strength of the cementitious

Effect of Multiwalled Carbon Nanotubes On Mechanical Properties of Concrete

2012 ◽  
Vol 2 (6) ◽  
pp. 166-168 ◽  
Author(s):  
Dr.T.Ch.Madhavi Dr.T.Ch.Madhavi ◽  
◽  
Pavithra.P Pavithra.P ◽  
Sushmita Baban Singh Sushmita Baban Singh ◽  
S.B.Vamsi Raj S.B.Vamsi Raj ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon

Estimation of the mechanical properties of nanocomposites based on the properties prediction of single wall carbon nanotubes (SWCNT)

2015 ◽  
Vol 57 (5) ◽  
pp. 447-457 ◽  
Author(s):  
Hassan S. Hedia ◽  
Saad M. Aldousari ◽  
Ahmed K. Abdellatif ◽  
Gamal S. Abdelhaffez
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

scholarly journals Beam Theory of Thermal–Electro-Mechanical Coupling for Single-Wall Carbon Nanotubes

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 923
Author(s):  
Kun Huang ◽  
Ji Yao
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Beam Theory ◽  
Bending Stiffness ◽  
Single Wall Carbon Nanotubes ◽  
Beam Model ◽  
Euler Beam ◽  
New Model ◽  
Mechanical Coupling ◽  
Electrostatic Fields

The potential application field of single-walled carbon nanotubes (SWCNTs) is immense, due to their remarkable mechanical and electrical properties. However, their mechanical properties under combined physical fields have not attracted researchers’ attention. For the first time, the present paper proposes beam theory to model SWCNTs’ mechanical properties under combined temperature and electrostatic fields. Unlike the classical Bernoulli–Euler beam model, this new model has independent extensional stiffness and bending stiffness. Static bending, buckling, and nonlinear vibrations are investigated through the classical beam model and the new model. The results show that the classical beam model significantly underestimates the influence of temperature and electrostatic fields on the mechanical properties of SWCNTs because the model overestimates the bending stiffness. The results also suggest that it may be necessary to re-examine the accuracy of the classical beam model of SWCNTs.

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