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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Application of High Performance Concrete to the Connection Between Precast Beam and Precast Slab
Author(s): D. de Lima Araujo and M.D. El Debs
Publication: Special Publication
Appears on pages(s): 339-360
Keywords: connection; high-strength concrete; precast concrete; shear-key; steel fiber
Abstract:This paper shows a study on the connection between precast beams and precast slabs using push-out tests. The connection is formed by steel bars associated with shear-key. The steel bars are bent in hoop shape and inserted in the pockets in slab, which are filled with cast-in-place concrete. The strength of cast-in-place concrete ranges from 50 MPa to 100 MPa and a maximum volume of 1.50 % of steel fibers is added. Results show the strength of the connection increases when the concrete strength increases, mainly when steel fibers are added. It is also observed that addition of steel fibers to high strength concrete in connections transfers failure from the shear-key to the precast concrete. This result suggests the definition of an upper limit to the relationship between the strength of cast-in-place concrete and the strength of precast concrete.
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