Paper Title:
Analysis on Punching Shear Behavior of the Raft Slab Reinforced with Steel Fibers
  Abstract

The thickness of the raft slab is determined by punching shear. The raft slab is commonly thick, which causes concrete volume is large. Mass concrete can bring disadvantage to the foundation. In order to increase the bearing capacity and reduce the thickness, it is suggested that the raft slab to be reinforced by steel fibers. There are five groups of specimens in this paper. S1 is the common reinforced concrete slab. S2 and S3 are concrete slabs reinforced by steel fibers broadcasted layer by layer when casting specimen. S4 and S5 are concrete slabs reinforced by steel fibers mixed homogeneously when making concrete. The punching shear tests of these slabs were done. The test results indicate that the punching shear capacity of the slab reinforced with steel fibers is higher than that of concrete slab, the stiffness and crack resistance of the steel fibers reinforced concrete slab are better than those of the common concrete slab and the punching shear of the slabs with different construction methods of steel fibers is similar. It analyses the punching shear behavior of the slab reinforced with steel fibers and suggests the ultimate bearing formula. The calculative values are coincided with the measured values well.

  Info
Periodical
Key Engineering Materials (Volumes 400-402)
Edited by
Jingsi Huo, Yan Xiao, Zongjin Li and Shuaib Ahmad
Pages
335-340
DOI
10.4028/www.scientific.net/KEM.400-402.335
Citation
X. W. Wang, W. L. Tian, Z. Y. Huang, M. J. Zhou, X. Y. Zhao, "Analysis on Punching Shear Behavior of the Raft Slab Reinforced with Steel Fibers", Key Engineering Materials, Vols. 400-402, pp. 335-340, 2009
Online since
October 2008
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Price
$32.00
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