A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Bending Behaviour of UHPC Reinforced with Rebars and Steel Fibres
Abstract Ultra High Performance Concrete (UHPC) is a smart and innovative material because of its high compressive strength and its durability. In order to carry flexural tension of bending members effectively, fibres are combined with conventional bar reinforcement even for economical reasons. Thereby, the structural and deformation behaviour is affected significantly. For flexural loading, a mechanical model based on equilibrium and compatibility is proposed. It includes the prediction of the development of the largest crack width as well as the estimation of the load capacity. The mechanical model is verified by bending tests of prismatic beams. Theoretical and experimental results demonstrated that positive influences of fibres, rebars and bond stiffness on the cracks in SLS lead to the negative effect of reduced ductility in ULS. However, the tests showed that a small amount of fibres fits well structural and economical requirements.
Bending Behaviour of UHPC Reinforced with Rebars and Steel Fibres
Abstract Ultra High Performance Concrete (UHPC) is a smart and innovative material because of its high compressive strength and its durability. In order to carry flexural tension of bending members effectively, fibres are combined with conventional bar reinforcement even for economical reasons. Thereby, the structural and deformation behaviour is affected significantly. For flexural loading, a mechanical model based on equilibrium and compatibility is proposed. It includes the prediction of the development of the largest crack width as well as the estimation of the load capacity. The mechanical model is verified by bending tests of prismatic beams. Theoretical and experimental results demonstrated that positive influences of fibres, rebars and bond stiffness on the cracks in SLS lead to the negative effect of reduced ductility in ULS. However, the tests showed that a small amount of fibres fits well structural and economical requirements.
Bending Behaviour of UHPC Reinforced with Rebars and Steel Fibres
Stürwald, Simone (author)
2017-08-06
9 pages
Article/Chapter (Book)
Electronic Resource
English
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