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Compressive behavior of steel fiber reinforced high strength concrete
Plain concrete demonstrates a rather brittle behavior both under compression and tension which becomes the more pronounced the higher is its strength. By adding steel fibers, the post-cracking behavior becomes more ductile and an increase of the strain capacity under tension and compression is found. The research project aims at the development of a model that describes the rotation capacity of steel fiber reinforced concrete loaded in bending and axial compression. The deformation of the compression zone is one of the aspects that influence the rotation. Therefore, compression tests are carried out on plain and steel fiber reinforced concrete specimens. In a series of tests high strength concrete (B105) with 60 kg/m3 Dramix fibers was tested. The fiber aspect ratio was constant (length/diameter = 80) and the fiber length was 30 and 60 mm, respectively. Concrete prisms (150*150*600 mm3 were loaded in compression, both centrically and eccentrically (eccentricity h/18 and h/6). Longitudinal and transverse deformations were measured. To quantify the possible localization of the deformation in a shear band as described by Markeset in the compressive damage zone model for plain concrete, the longitudinal deformation was measured using several measuring lengths.
Compressive behavior of steel fiber reinforced high strength concrete
Plain concrete demonstrates a rather brittle behavior both under compression and tension which becomes the more pronounced the higher is its strength. By adding steel fibers, the post-cracking behavior becomes more ductile and an increase of the strain capacity under tension and compression is found. The research project aims at the development of a model that describes the rotation capacity of steel fiber reinforced concrete loaded in bending and axial compression. The deformation of the compression zone is one of the aspects that influence the rotation. Therefore, compression tests are carried out on plain and steel fiber reinforced concrete specimens. In a series of tests high strength concrete (B105) with 60 kg/m3 Dramix fibers was tested. The fiber aspect ratio was constant (length/diameter = 80) and the fiber length was 30 and 60 mm, respectively. Concrete prisms (150*150*600 mm3 were loaded in compression, both centrically and eccentrically (eccentricity h/18 and h/6). Longitudinal and transverse deformations were measured. To quantify the possible localization of the deformation in a shear band as described by Markeset in the compressive damage zone model for plain concrete, the longitudinal deformation was measured using several measuring lengths.
Compressive behavior of steel fiber reinforced high strength concrete
Kompressionsverhalten von stahlfaserverstärktem hochfesten Beton
Schumacher, P. (author) / Braam, C.R. (author) / Walraven, J.C. (author)
2002
14 Seiten, 9 Bilder, 3 Tabellen, 5 Quellen
Conference paper
English
Compressive Behavior of Steel Fiber Reinforced High Strength Concrete
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