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Paper Information

Journal:   NANOMATERIALS (JOURNAL OF NANOCOMPOSITE MATERIALS RESEARCH)   WINTER 2010 , Volume 1 , Number 4; Page(s) 229 To 236.
 
Paper: 

STUDY OF MECHANICAL AND MICROSTRUCTURE OF CONCRETE-MWCNTS NANOCOMPOSITE TREATED WITH CARBOXYLIC GROUP

 
 
Author(s):  KESHAVARZ R., MOHEBBI A.*, MORSHEDIAN J.
 
* SHIRAZ, DARAB, ISLAMIC AZAD UNIVERSITY, DARAB BRANCH
 
Abstract: 
In this research, the effect of the presence of MWCNTs treated by 0.01 and 0.02 weight percentages carboxylic group were studied. The concrete nanocompsite samples were prepared by uniform distribution of nanotubes in cement/sand in water. The effects of CNTs on mechanical behavior were studied by compression and flexural strength analysis of concrete nanocomposite and their microstructures investigated by SEM analysis. In presence of CNTs, the compression and the flexural strength of concrete composites increased more than 30% and 13%, respectively. Also, CNTs lead to improvement of microstructure porosity of concrete composite and therefore more solid and more compressed concrete composite will be created. The treated CNTs in concrete composite will generate more contact surface to transferring of forces. As a result, these lead to better CNT’s surface bonding with concrete matrix to prevent it from growth of defects.
 
Keyword(s): CEMENT, CONCRETE COMPOSITE, CARBON NANOTUBES
 
References: 
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