Experimental Investigation of Bond Strength of Hot-Dip Galvanized Reinforcement in Normal- and High-Strength Concrete

2003 ◽  
Vol 100 (4) ◽  
Keyword(s):  
Experimental Investigation ◽  
Bond Strength ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete

scholarly journals Bond Strength of Chemical Anchor in High-Strength Concrete

2012 ◽  
Vol 40 ◽  
pp. 38-43 ◽  
Author(s):  
J. Barnaf ◽  
M. Bajer ◽  
M. Vyhnankova
Keyword(s):  
Bond Strength ◽  
High Strength Concrete ◽  
High Strength ◽  
Strength Concrete

Bond behavior of high strength concrete under reversed pull-out cyclic loading

2002 ◽  
Vol 29 (2) ◽  
pp. 191-200 ◽  
Author(s):  
M Alavi-Fard ◽  
H Marzouk
Keyword(s):  
Cyclic Loading ◽  
Bond Strength ◽  
High Strength Concrete ◽  
Concrete Strength ◽  
High Strength ◽  
Displacement Curve ◽  
Bond Slip ◽  
Strength Concrete ◽  
Pull Out ◽  
Normal Strength

Structures located in seismic zones require significant ductility. It is necessary to examine the bond slip characteristics of high strength concrete under cyclic loading. The cyclic bond of high strength concrete is investigated under different parameters, including load history, confining reinforcement, bar diameter, concrete strength, and the rate of pull out. The bond strength, cracking, and deformation are highly dependent on the bond slip behavior between the rebar and the concrete under cyclic loading. The results of cyclic testing indicate that an increase in cyclic displacement will lead to more severe bond damage. The slope of the bond stress – displacement curve can describe the influence of the rate of loading on the bond strength in a cyclic test. Specimens with steel confinement sustained a greater number of cycles than the specimens without steel confinement. It has been found that the maximum bond strength increases with an increase in concrete strength. Cyclic loading does not affect the bond strength of high strength concrete as long as the cyclic slip is less than the maximum slip for monotonic loading. The behavior of high strength concrete under a cyclic load is slightly different from that of normal strength concrete.Key words: bond, high strength, cyclic loading, bar spacing, loading rate, failure mechanism.

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