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Title |
Steel Fiber Reinforcing Effect Analysis of Slab Panel Structure and Assessment Technics of Toughness
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Abstract |
This paper is aimed to evaluate the effectiveness of flexural toughness of slab panel structures (60×60×10㎝) reinforced by steel fiber instead of wire mesh. Steel fiber used in this study is double hooked Dramix type fiber. And the fiber length is 60mm, diameter is 0.8mm. Various assessment methods of toughness index are used to estimate the proper effectiveness. In this experimental study, we find that Johnston, JCI-SF4 and EFNARC method are more effective to assess the flexural toughness of slab panels than the others. And the steel fiber is very effective alternative material to reinforce slab panel structures instead of wire mesh. Fiber volume fraction of 0.5∼0.75% is more useful than the others in enhancing the post-peak energy absorption and toughness index by Johnston's I5.5 assessment method. And the slab panels reinforcing with steel fiber are more resistant to crack propagation than wire mesh reinforcing slabs.
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