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Computers and Concrete
  Volume 19, Number 6, June 2017 , pages 625-630
DOI: https://doi.org/10.12989/cac.2017.19.6.625
 


Bond behavior between high volume fly ash concrete and steel rebars
Jiong-Feng Liang, Ming-Hua Hu, Lian-Sheng Gu and Kai-Xi Xue

 
Abstract
    In this paper, 54 pull-out specimens and 36 cubic specimens with different replacement ratios of fly ash in the concrete (i.e., 0%, 20%, 30%, 40%, 50%, 60%) were fabricated to evaluate the bond at the interface between fly ash concrete and steel rebar. The results showed that the general shape of the bond-slip curve between fly ash concrete and steel rebar was similar to that for the normal concrete and steel rebar. The bond strength between fly ash concrete and the steel rebar was closer to each other at the same rebar diameter, irrespective of the fly ash replacement percentage. On the basis of a regression analysis of the experimental data, a revised bond strength mode and bond-slip relationship model were proposed to predict the bond-slip behaviour of high volume fly ash concrete and steel rebar.
 
Key Words
    fly ash; concrete; bond-slip relationship; pull-out; strength
 
Address
Jiong-Feng Liang:
1) Jiangxi Engineering Research Center of Process and Equipment for New Energy, East China University of Technology,
418 Guanglan Road, Nanchang, P.R. China
2) Faculty of Civil & Architecture Engineering, East China University of Technology, 418 Guanglan Road, Nanchang, P.R. China
Ming-Hua Hu, Lian-Sheng Gu and Kai-Xi Xue: Faculty of Civil & Architecture Engineering, East China University of Technology, 418 Guanglan Road, Nanchang, P.R. China
 

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