Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (13): 146-151.doi: 10.11924/j.issn.1000-6850.casb17020017

Special Issue: 油料作物 园艺

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Bond Behavior Between Rape Straw Ash Concrete and Steel Bar

Yi Duhang1, Liu Baohua1,2, Zeng Zhe1, Yi Lian1, Zhou Yun1, Huang Wei1   

  1. (1College of Engineering, Hunan Agricultural University, Changsha 410128;2Hunan Provincial Engineering Technology Research Center for Modern Agricultural Equipment, Changsha 410128)
  • Received:2017-02-07 Revised:2017-03-16 Accepted:2017-03-17 Online:2017-05-16 Published:2017-05-16

Abstract: The paper aims to explore influences of bond behavior between steel bar and concrete mixed with rape straw ashes. To do this, a center pull-out test on 3 test-pieces of steel bars and rape straw ashes concrete with 3 different amounts of rape straw ashes was conducted, and the corresponding bond behaviors were compared at the same time. The results showed that a positive correlation between steel bars and rape straw ashes concrete and the compression strength of concrete; when the water-binder ratio was constant, the bond behavior of steel bars and rape straw ashes concrete decreased with the increase of rape straw ashes amount; the water-binder ratio of 0.47 could make the bond behavior between steel bars and rape straw ashes nearly the same with that of plain concrete, which was the optimal mix ratio. Therefore, by replacing cement with the right and equal amount of rape straw ashes in the ordinary reinforced concrete with lower bearing requirements, energy can be saved in cement production and agriculture wastes can be used rationally and scientifically.