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Finite element modelling of the biaxial behaviour of high-performance fibre-reinforced cement composites (HPFRCC) using Concrete Damaged Plasticity Vrije Universiteit Brussel
High-performance fibre-reinforced cement or concrete composites (HPFRCC) are increasingly used in structural applications exposed not only to uniaxial but also complex stress states. Current finite element models for these materials have however been only validated for uniaxial stress states, and mostly restricted to cement composites with relatively limited strain hardening capacity in tension. To facilitate the numerical analysis and design of ...
A novel approach to the complete stress strain curve for plastically damaged concrete under monotonic and cyclic loads Ghent University
Finite element analysis of glass fibre reinforced composites with inorganic phosphate cement matrix: comparison of inbuilt abaqus concrete models. Vrije Universiteit Brussel
Cement composites are promising particularly for the construction industry as they overcome crucial drawbacks of more commonly used polymer matrix composite materials. Contrarily to traditional organic resins (epoxy), the Inorganic Phosphate Cement (IPC), developed at Vrije Universiteit Brussel, is incombustible. The IPC matrix moreover has a neutral pH after hardening, such that it is not chemically aggressive for E-glass fibres, which are ...
Numerical modeling of the carbonation depth of meso-scale concrete under sustained loads considering stress state and damage Ghent University
A numerical method is proposed to determine the semi-carbonated and fully-carbonated depth of concrete subjected to sustained loads. The method modified the diffusivity of each element by multi-axial load levels and stress damages. Based on 1000-day carbonation results of 2D mesoscale concrete, it was indicated that the external load causes highly uneven carbonations and has a similar influence on the semi-carbonated and fully-carbonated depth. ...
A meshless approach to non-local damage modelling of concrete Ghent University
A radial point interpolation meshless method extended with an elastic rate-independent continuum damage model for concrete materials Ghent University
Cyclic Behaviour of Steel Fibre Reinforced Concrete with Acoustic Emission-based Multi-scale Analysis KU Leuven
The limited tensile resistance of concrete stimulated the development of steel fibre reinforced concrete (SFRC), consisting of a concrete matrix with randomly distributed steel fibres and characterised by an improved post-cracking behaviour. Despite the various non-structural SFRC applications, its use is still restricted with respect to its potentials, which is mainly caused by the lack of international design codes. Moreover, structural ...
Numerical analysis of reinforced concrete shear keys in immersion joints Ghent University
Immersion joints are susceptible to be damaged first under various loadings due ito their smaller stiffhess compared to the adjacent tunnel elements. The induced Ideformations and the forces in the joint are transferred by shear keys. If failure occurs in the i shear keys, excessive defbrmations may lead to severe leakage. This paper presents threedimensional numerical analysis results for RC shear keys by using the concrete damaged plasticity ...
Sectional analysis of the cyclic behavior of steel fiber reinforced concrete KU Leuven
Steel fiber reinforced concrete (SFRC) is known for improving the tensile post-cracking fatigue behavior of concrete. This paper presents a method to obtain the cyclic tensile behavior of SFRC through sectional analysis, using a limited amount of input parameters. The analytical model is divided into two parts: a monotonic and cyclic model. The monotonic model calculates the uniaxial stress-crack width curves or constitutive laws of SFRC that ...