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A platform for research: civil engineering, architecture and urbanism
Experimental and numerical analysis of steel fiber reinforced concrete slabs
Steel fiber reinforced concrete (SFRC) has proven to be an attractive material for a wide range of applications in civil construction industry. The excellent performance exhibited by this composite is essentially due to its high energy absorption capacity. This paper describes the tests performed and the numerical model developed to simulate the behavior of SFRC structures. The influence of steel fibers on the behavior of concrete structures with fracture mode I was assessed by performing bending tests on slab strips reinforced with different percentage of fibers and including a conventional wire mesh reinforcement, as well. Fiber concentration ranged from 0 to 2.5 percent by weight of concrete. The hooked-ends steel fibers, with the trademark Dramix ZX60/.80, were the fibers considered in this study. A significant increase in the load carrying capacity of the slabs and a decrease in the crack spacing were observed with the increasing of fiber content. The constitutive model developed is based on the strain decomposition concept for the cracked cement based materials. This concept is adjusted to simulate the fiber reinforcement contribution. The model performance was assessed by the experimental results obtained.
Experimental and numerical analysis of steel fiber reinforced concrete slabs
Steel fiber reinforced concrete (SFRC) has proven to be an attractive material for a wide range of applications in civil construction industry. The excellent performance exhibited by this composite is essentially due to its high energy absorption capacity. This paper describes the tests performed and the numerical model developed to simulate the behavior of SFRC structures. The influence of steel fibers on the behavior of concrete structures with fracture mode I was assessed by performing bending tests on slab strips reinforced with different percentage of fibers and including a conventional wire mesh reinforcement, as well. Fiber concentration ranged from 0 to 2.5 percent by weight of concrete. The hooked-ends steel fibers, with the trademark Dramix ZX60/.80, were the fibers considered in this study. A significant increase in the load carrying capacity of the slabs and a decrease in the crack spacing were observed with the increasing of fiber content. The constitutive model developed is based on the strain decomposition concept for the cracked cement based materials. This concept is adjusted to simulate the fiber reinforcement contribution. The model performance was assessed by the experimental results obtained.
Experimental and numerical analysis of steel fiber reinforced concrete slabs
Barros, Joaquim A. O. (author) / Figueiras, Joaquim A. (author)
1996-10-01
Conference paper
Electronic Resource
English
DDC:
690
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