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Nanotechnology in Eco-Efficient Construction by M Diamanti, C Goran-Granqvist, A Nazari, Fernando Pacheco-Torgal

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4

Self-sensing concrete with nanomaterials

Z. Chen and Y. Ding,     Dalian University of Technology, China

F. Pacheco-torgal and Y. Zhang,     University of Minho, Portugal

Abstract:

Conductive concrete containing nano carbon black (NCB) and carbon fibre (CF) to enable the self-diagnosis of strain and damage was studied. The effect of NCB and CF on workability, mechanical properties and fractional change in resistance (FCR) in fresh and hardened concrete was analysed. The relationship between the FCR, the strain of initial geometrical neutral axis (IGNA) and the degree of beam damage was established. The results showed that the relationship between the FCR and the IGNA strain can be described by the First Order Exponential Decay function, ...

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