Authored book
Zur Druck-Querzug-Festigkeit von Stahlbeton und stahlfaserverstärktem Stahlbeton in scheibenförmigen Bauteilen (Biaxial Compression-Tension-Strength of Reinforced Concrete and Reinforced Steel Fibre Concrete in Structural Panels)

Publication Details
Fehling, E.; Leutbecher, T.; Röder, F.
Kassel University Press GmbH
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Schriftenreihe Baustoffe und Massivbau
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At the Institute of Structural Engineering (Chair of Concrete Structures) of the Faculty of Civil Engineering, Kassel University, several test series were carried out, subjecting reinforced concrete panels with and without fibres to biaxial compression-tension loading. The effects of transverse tension on the concrete compressive strength, stiff­ness, and cracking behaviour as well as compressive strain at peak load were determined by testing a total of 56 specimens. Based on the experimental results, a proposal for the reduction of the compression strength of the cracked rein­forced concrete with and without steel fibres is made, as a function of the applied tensile strain. The results are compared with the design requirements for compression struts according to DIN 1045-1, Eurocode 2, CEB-FIP Model Code 1990, and ACI Standard 318-05, as well as with the investigations of other re­searchers. Thereby, the well known inconsistencies between the test results, the proposed models, and the design rules from U.S.A, Canada, and Europe can be solved largely. A material model for cracked reinforced con­crete with and without fibres is derived. It can be used as a constitutive model for the determination of internal forces and deformations by nonlinear methods. The stress-strain-curve for uniaxial loading according to Fig. 22 of DIN 1045-1 was extended for biaxial compression-tension loading.

Last updated on 2019-25-07 at 13:43