Experimental Study on Bond Behavior between Concrete and Deformed Steel Bar with Different Steel Bar

Yan Xiao, Shi Qingxuan, Xu Zhaodong

Abstract

Based on the study of mechanical property test in normal weight concrete and lightweight concrete with different fiber volume fractions，the influence of steel fiber on the bond mechanism between deformed steel bar and reinforced concrete was discussed through the central pullout test program. It can be found that the ability to resist crack propagate of the concrete was increased because of the steel fiber added in the concrete. The bond behavior of the concrete was also increased. With the same fiber volume fractions in two concretes，normal weight concrete has a better performance to avoid the crack propagation than lightweight concrete. Therefore，the bond behavior of normal weight concrete is also better than that of lightweight concrete. The maximum increase of the reinforced concrete bond strength was 49.94% （normal weight concrete with 40 kg/m3 fiber volume fractions） and 51.94% （lightweight concrete with 60 kg/m3 fiber volume fractions），respectively. The research in this paper can provide theoretical reference for the follow-up research on the bonding performance and promote the application of lightweight aggregate steel fiber concrete in practical engineering.

 

Keywords:  bond stress,  steel fiber reinforced concrete,  deformed steel bar,  pullout testing



Full Text:

PDF


References


LI С F,SU Y W,ZHAN N,e£ al. Experimental research on anchorage performance of recycled aggregate concrete with steel fiber and silica fume concrete [j]. Industrial Construction,2014,44 (9): 101—105. (in Chinese)

LIANG X W,SHI Q X. Design theory for concrete structure [М]. Beijing: China Architecture and Building Press,2008:35—36. (in Chinese)

DING Y N,D0NG X J, WANG Y H. Testing methods and evaluating standards of flexural toughness for steel fiber reinforced concrete [J]. Journal of Building Materials, 2005,8(6): 660—664. (In Chinese)

ZHU D J, LI X Y,SHI C J,et al. Pullout test of bio-inspired steel fiber from cementitious matrix [j]. Journal of Hunan University (Natural Sciences) ,2018,45( 1) : 84—89. (in Chinese)

PAN H M,MA Y C. Impact resistance of steel fiber reinforced concrete and its mechanism of crack resistance and toughening [j]. Journal of Building Materials, 2017, 20(6): 956—961. (in Chinese)

ZHAO G F. Steel fiber reinforced concrete structure [M ]. Beijing: China Architecture and Building Press, 1999:2—4. (in Chinese)

LIU H Y,WANG L C,SONG Y P,et cd. Experimental study on mechanical properties of steel fiber reinforced high —strength lightweight aggregate concrete [j]. Journal of Building Structure, 2007,28(5): 110—117. (in Chinese)

FANG Z,XIANG Y,KUANG Z,ei cd. Fatigue properties of reactive powder concrete with different steel fiber ratios [j]. Journal of Hunan University (Natural Sciences) ,2011,38 (6) : 6—12. (in Chinese)

SORUSHIAN P,MIRZA F,ALHOZAIMY A. Bonding of confined steel fiber reinforced concrete to deformed bars [ J ]. ACI Materials Journal, 1994,91(2): 141—149.

WON J P,PARK C G,KIM H H,et cd. Effect of fibers on the bonds between FRP reinforcing bars and high-strength concrete [j]. Composites Part В Engineering,2008,39(5 ): 747—755.

§EMSI Y,AREL H §. The effect of steel fiber on the bond between concrete and deformed steel bar in SFRCs [j]. Construction & Building Materials ,2013 ,40:299—305.

HARAJLI M H,SALLOUKH К A. Effect of fibers on development/ splice strength of reinforcing bars in tension [j]. ACI Materials Journal, 1995,94(4) :317—324.

EZELDIN A S, BALA GURU P N. Bond behavior of normal and high-strength fiber reinforced concrete [J]. ACI Materials Journal, 1989,86(5): 515—524.

ACHILLIDES Z, PILAKOUTAS K. Bond behavior of fiber reinforced polymer bars under direct pullout conditions [j]. Journal of Composites for Construction. 2004,8(2): 173—181.


Refbacks

  • There are currently no refbacks.