Reviewing Optimal Percent of Steel Fibers and their Effects on Lightweight Concrete Durability

Subject Areas : Analysis of Structure and Earthquake

Ali Ghods ¹ , sanaz chahkandi ² , Homayon navayi ³

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Received: 2012-12-25 Accepted : 2013-04-25 Published : 2013-05-22

Keywords: Efficiency, Mechanical Properties, Key words: steel fiber, light concrete, durability,

Abstract :

Abstract In recent years, many researches are focused on optimizing the production of a kind of concrete with high strength and efficiency, and different methods including using fiber technology in concrete construction are proposed to achieve this goal. Fibers are one of the materials that nowadays are added to concrete as reinforcement material. Considering the low weight and good resistance of this material and using a good percent of these materials in lightweight concrete can result in smaller segments with greater resistance.  In this paper, we try to study and evaluate the effects of steel fibers on the strength and also the amount of fibers in lightweight concrete. One of the strength experiments is wetting and drying which is used in this study. Also by reviewing dynamic properties of lightweight concrete made with pumice + leca and taftan and comparing with lightweight concrete which is armed with steel fiber, we can achieve the optimal percent of fiber in concrete. Experimental results are presented in graphs and charts.