Potential of Carbon Nanotube Reinforced Cement Composites as Concrete Repair Material

Carbon nanotubes (CNTs) are a virtually ideal reinforcing agent due to extremely high aspect ratios and ultra high strengths. It is evident from contemporary research that utilization of CNT in producing new cement-based composite materials has a great potential. Consequently, possible practical app...

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Bibliographic Details
Published in:Journal of nanomaterials 2016-01, Vol.2016 (2016), p.1-10
Main Authors: Manzur, Tanvir, Emon, Md. Abul Bashar, Yazdani, Nur
Format: Article
Language:English
Subjects:
Bleeding
Carbon
Carbon nanotubes
Cement hydration
Composite materials
Durability
Mechanical properties
Multi wall carbon nanotubes
Nanomaterials
Nanotechnology
Nanotubes
Ratios
Reinforced cements
Reinforcing steels
Repair
Shear
Shear tests
Studies
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Summary:Carbon nanotubes (CNTs) are a virtually ideal reinforcing agent due to extremely high aspect ratios and ultra high strengths. It is evident from contemporary research that utilization of CNT in producing new cement-based composite materials has a great potential. Consequently, possible practical application of CNT reinforced cementitious composites has immense prospect in the field of applied nanotechnology within construction industry. Several repair, retrofit, and strengthening techniques are currently available to enhance the integrity and durability of concrete structures with cracks and spalling, but applicability and/or reliability is/are often limited. Therefore, there is always a need for innovative high performing concrete repair materials with good mechanical, rheological, and durability properties. Considering the mechanical properties of carbon nanotubes (CNTs) and the test results of CNT reinforced cement composites, it is apparent that such composites could be used conveniently as concrete repair material. With this end in view, the applicability of multiwalled carbon nanotube (MWNT) reinforced cement composites as concrete repair material has been evaluated in this study in terms of setting time, bleeding, and bonding strength (slant shear) tests. It has been found that MWNT reinforced cement mortar has good prospective as concrete repair material since such composites exhibited desirable behavior in setting time, bleeding, and slant shear.
ISSN:1687-4110
1687-4129
DOI:10.1155/2016/1421959