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Research

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© Daniel Sahm
STB_EMI_Vorspann

Subject areas

Solid construction

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Projects of the Chair of Steel Construction and Composite Steel Construction

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Inclination of cracks and bearing behaviour of prestressed UHPFRC girders subjected to shear

Unlike for reinforced concrete members with shear reinforcement, a generally accepted model, which is able to describe the shear bearing behaviour of specimens without shear reinforcement consistently, does not exist until this day. Comparing different models shows that the relevant shear bearing mechanisms, namely the uncracked concrete compressive zone, the aggregate interlock, and the dowel action of the longitudinal reinforcement, are interpreted and weighted differently.

massivbau_baustelle
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Rotation capacity of plastic hinges in mixed reinforced UHPC flexural members

The rotation capacity of plastic hinge regions characterises the ductility of reinforced/prestressed concrete beams and enables the redistribution of forces in statically indeterminate structures. Existing models for predicting the rotation capacity of reinforced/prestressed concrete beams can hardly be transferred and applied to UHPC beams, since UHPC beams are generally reinforced with steel fibres.

Influence of section depth and maximum aggregate size on the flexural tensile strength of ultra-high performance concrete

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Deriving the design value of the post-cracking tensile strength for ultra-high performance fibre-reinforced concrete taking into account the size effect on the scatter

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Composite in glass-rigid foam-concrete sandwich elements

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Derivation of the centric post-cracking tensile strength of steel fiber reinforced ultra-high performance concrete from flexural tests

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Effect of specimen geometry on the compressive strength of ultra-high performance concrete

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Strength independent design approach for beams reinforced with steel fibres and reinforcing steel

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