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Project

Post-cracking behaviour of fibre reinforced recycled concrete

The growing world population puts a tremendous strain on the use of natural resources, which forces the construction sector to find alternative building materials. Therefore, the use of recycled aggregates, originating from construction and demolition waste, has known a growing interest in the last decades. Nevertheless, there is still a lack of confidence in the use of recycled aggregates in structural concrete. In addition, the use of fibres in concrete showed a significant improvement of the post-cracking behaviour compared to conventional concrete. This led to the design of the constitutive tensile model for fibre reinforced concrete, given in the fib Model Code 2010. This model is mainly based on the scientific outcome of steel fibre reinforced concrete with natural aggregates. From this perspective, this PhD-work expanded the research domain to the application of recycled aggregates and other fibre types. Therein, the focus is put on both the verification and optimization of the constitutive tensile model for other fibre types than steel fibres, as well as the influence of recycled aggregates on the post-cracking behaviour of fibre reinforced concrete.

Date:1 Jan 2018 →  16 Feb 2022
Keywords:recycled concrete aggregates, precast, fibres, structural concrete
Disciplines:Construction engineering, Earthquake engineering, Geotechnical and environmental engineering, Water engineering, Wind engineering
Project type:PhD project