Paper Information

Journal:   INTERNATIONAL JOURNAL OF ENGINEERING   APRIL 2004 , Volume 17 , Number 1 (TRANSACTIONS B: APPLICATIONS); Page(s) 41 To 50.
 
Paper: 

OPTIMIZING OF STEEL FIBER REINFORCED CONCRETE MIX DESIGN

 
 
Author(s):  BEDDAR M., BELGARAA L., AYADAT T.
 
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Abstract: 
Cementitious matrices are the fragile materials that possess a low tensile strength. The ‎addition of fibers randomly distributed in these matrices improves their resistance to ‎cracking, substantially. However, the incorporation of fibers into a plain concrete ‎disrupts the granular skeleton and quickly causes problems of mixing as a result of the ‎loss of mixture workability that will be translated into a difficult concrete casting in ‎site. This study was concerned on the on hand with optimizing the fibers reinforced ‎concrete mixes in the fresh state, and on the other hand with assessing the mechanical ‎behavior of this mixture in the hardened state, in order to establish a compromise ‎between the two states. In the first part of this paper, an experimental study of an ‎optimization method of fibers reinforced concrete while taking into account of some ‎parameters related to the matrix e.g. volume of the admixture, volume of incorporated ‎fibers and the volume of water and, cement (W, C) in function of workability time are ‎presented. Finally, test specimens of mixture optimized by this method have been ‎tested in compression and tension due to bending. The results have been compared ‎with those of mixture test specimens optimized by Baron-Lesage method‏.‏
 
Keyword(s): CONCRETE, FIBERS, OPTIMIZATION, WORKABILITY, RANGE
 
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