Paper Information

Journal:   INTERNATIONAL JOURNAL OF ADVANCED STRUCTURAL ENGINEERING   2018 , Volume 10 , Number 1; Page(s) 49 To 60.
 
Paper: 

EXPERIMENTAL INVESTIGATION OF STEEL FIBER?REINFORCED CONCRETE BEAMS UNDER CYCLIC LOADING

 
 
Author(s):  RANJBARAN FARIMAN*, REZAYFAR OMID, MIRZABABAI RAHMATOLLAH
 
* DEPARTMENT OF CIVIL ENGINEERING, ISLAMSHAHR BRANCH, ISLAMIC AZAD UNIVERSITY, ISLAMSHAHR, IRAN
 
Abstract: 

An experimental study has been conducted to study the cyclic behavior of reinforced concrete beams in which steel fibers were added to the concrete mix. Seven similar geometrically specimens in full scale were studied under four- point bending test in the form of slow cyclic loading. One sample as a control specimen was made without steel fibers or 0% volume fraction (vf) and six other samples with 1, 2 and 4% vf of steel fibers in twin models. The maximum and ultimate resistance, ductility, degradation of loading and unloading stiffness, absorption and dissipation of energy and equivalent viscous damping were studied in this investigation and the effect of steel fibers on the cyclic behavior was compared with each other. Generally, the addition of steel fibers up to a certain limit value (vf=2%) improves the cyclic behavior of reinforced concrete beams and results in the increase of maximum strength and ultimate displacement.

 
Keyword(s): STEEL FIBER-REINFORCED CONCRETE, VOLUME FRACTION, DAMPING, SECANT STIFFNESS, EXPERIMENTAL STUDY
 
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