Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 43, Issue -, Pages 233-241Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2013.02.010
Keywords
Nano-carbon black; Carbon fiber; Conductive concrete; Strain; Damage degree; Fractional change in resistance
Categories
Funding
- National Natural Science Foundation of China [50278013, 51121005]
- State Key Laboratory of Coastal and Offshore Engineering
- DUT
- Fundacao para a Ciencia e a Tecnologia [SFRH/BPD/22680/2005]
- FEDER Funds through Programa Operacional Factores de Competitividade - COMPETE
- Portuguese Funds through FCT [PEst-CMAT/UI0013/2011, PTDC/MAT/112273/2009]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/22680/2005] Funding Source: FCT
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The nano-carbon black (NCB) and carbon fiber (CF) as electric conductive materials were added into the concrete. The effect of the NCB and CF on the mechanical properties and on the fractional change in resistance (FCR) of concrete was investigated. The relationships among the FCR, the strain of initial geometrical neutral axis (IGNA) and the beam damage degree were developed. The results showed that the relationship between the FCR and IGNA strain can be described by the First Order Exponential Decay function, and the internal damage of concrete beam was reflected by the relationship between damage degree and resistance. (c) 2013 Elsevier Ltd. All rights reserved.
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