OZR backup mandate: Multiscale Investigation of 3D Textile Reinforced Cement Composites: a Combined Experimental and Numerical Approach from Mesoscopic Scale Complex Interactions up to Structural Scale Mechanical Behaviour

Project Details

Description

The use of fibre textile woven reinforcement instead of steel has seen an increasing interest recently due to its potential in reducing the amount of concrete required and its increased durability. 3D textiles are the most recent advancement in this field, with
transversal through thickness connections of the textile improving the bending performance of the textile reinforced cement composite (TRC) in the post-cracking phase. Yet, no model exists that can link this behaviour to the transversal connections quantity, material, geometry and placement. The non-linear behaviour in the cracked state, the matrix-fibre interface interaction and the low reinforcement volume ratio create a complex stress-transfer mechanism within the cement composite. It is proposed to combine new experiments at different scales with non-smeared modelling approaches to assess the role of the mesoscale phenomena - cracking, decohesion and interfacial stress transfer - on the increase of structural properties. New experiments will be exploited in computational techniques to obtain a predictive model assessing the load bearing capacity of 3D TRC. The result will be a tool that can maximise the post-cracking properties of the 3D TRC by designing the transversal connections based on their effects on the structural scale behaviour. This will improve the design of TRC based structures, minimising the material use, and paving the way for a more accurate representation of the structural behaviour of 3D TRCs.
AcronymOZR4008
StatusActive
Effective start/end date1/11/2231/10/23

Flemish discipline codes

  • Construction materials
  • Structural engineering
  • Short and long fibre reinforced composites
  • Computational materials science
  • Modelling and simulation

Keywords

  • 3D Fibre Textile Reinforced Concrete
  • Multiscale Modelling and Characterisation
  • Matrix-Reinforcement Interaction