Micromechanical Analysis of Cement Paste with Carbon Nanotubes

Micromechanical Analysis of Cement Paste with Carbon Nanotubes

Carbon nanotubes (CNT) are an attractive reinforcement material for several composites, due to their inherently high strength and high modulus of elasticity. There are controversial results for cement paste with admixed CNT up to 500 µm in length. Some results show an increase in flexural or compres...

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Bibliographic Details
Main Authors: Vít Šmilauer, Petr Hlaváček, Pavel Padevět
Format: Article
Language:English
Published: CTU Central Library 2012-01-01
Series:Acta Polytechnica
Subjects:
carbon nanotubes
cement hybrid material
micromechanics
fracture energy
Online Access:https://ojs.cvut.cz/ojs/index.php/ap/article/view/1670
Description
Summary:Carbon nanotubes (CNT) are an attractive reinforcement material for several composites, due to their inherently high strength and high modulus of elasticity. There are controversial results for cement paste with admixed CNT up to 500 µm in length. Some results show an increase in flexural or compressive strength, while others showing a decrease in the values. Our experiments produced results that showed a small increase in fracture energy and tensile strength. Micromechanical simulations on a CNT-reinforced cement paste 50×50 µm proved that CNT clustering is the crucial factor for an increasein fracture energy and for an improvement in tensile strength.
ISSN:1210-2709
1805-2363

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