A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Verification of the improved constitutive tensile model for fibre reinforced concrete
https://orcid.org/http://orcid.org/0000-0003-4883-5800
Recently, new constitutive tensile models for describing the post-cracking behaviour of fibre reinforced concrete for different performance classes were developed by the author(s). The models are based on test data on notched beams with macro fibres, including one type of glass fibres and two polypropylene fibres. Nowadays, a wide range of macro fibres for reinforcing concrete mixtures is available. The objective of this paper is thus to examine whether the newly developed models are applicable for other FRC mixtures. For this purpose, the experimental results of 236 three-point bending tests on notched beams, obtained from Vrijdaghs et al. and the international company Bekaert, are compared with the model predictions. The results indicate that the proposed model for performance class a & b and class c exhibit a higher accuracy at CMOD1 than the model in MC10 and EC2 (next version). However, further optimization is required at CMOD3 for the model of performance class a & b and class d. A strong correlation is also found between the experimental fR1-values, as well as the fR3-values, and the predicted compression zone height of the beam cross-section at midspan by use of those new constitutive models. Moreover, this paper also proposes a modification to the model of Oettel et al. for better estimating the residual flexural tensile strength of FRC mixtures with 4D Dramix fibres.
Verification of the improved constitutive tensile model for fibre reinforced concrete
https://orcid.org/http://orcid.org/0000-0003-4883-5800
Recently, new constitutive tensile models for describing the post-cracking behaviour of fibre reinforced concrete for different performance classes were developed by the author(s). The models are based on test data on notched beams with macro fibres, including one type of glass fibres and two polypropylene fibres. Nowadays, a wide range of macro fibres for reinforcing concrete mixtures is available. The objective of this paper is thus to examine whether the newly developed models are applicable for other FRC mixtures. For this purpose, the experimental results of 236 three-point bending tests on notched beams, obtained from Vrijdaghs et al. and the international company Bekaert, are compared with the model predictions. The results indicate that the proposed model for performance class a & b and class c exhibit a higher accuracy at CMOD1 than the model in MC10 and EC2 (next version). However, further optimization is required at CMOD3 for the model of performance class a & b and class d. A strong correlation is also found between the experimental fR1-values, as well as the fR3-values, and the predicted compression zone height of the beam cross-section at midspan by use of those new constitutive models. Moreover, this paper also proposes a modification to the model of Oettel et al. for better estimating the residual flexural tensile strength of FRC mixtures with 4D Dramix fibres.
Verification of the improved constitutive tensile model for fibre reinforced concrete
https://orcid.org/http://orcid.org/0000-0003-4883-5800
Recently, new constitutive tensile models for describing the post-cracking behaviour of fibre reinforced concrete for different performance classes were developed by the author(s). The models are based on test data on notched beams with macro fibres, including one type of glass fibres and two polypropylene fibres. Nowadays, a wide range of macro fibres for reinforcing concrete mixtures is available. The objective of this paper is thus to examine whether the newly developed models are applicable for other FRC mixtures. For this purpose, the experimental results of 236 three-point bending tests on notched beams, obtained from Vrijdaghs et al. and the international company Bekaert, are compared with the model predictions. The results indicate that the proposed model for performance class a & b and class c exhibit a higher accuracy at CMOD1 than the model in MC10 and EC2 (next version). However, further optimization is required at CMOD3 for the model of performance class a & b and class d. A strong correlation is also found between the experimental fR1-values, as well as the fR3-values, and the predicted compression zone height of the beam cross-section at midspan by use of those new constitutive models. Moreover, this paper also proposes a modification to the model of Oettel et al. for better estimating the residual flexural tensile strength of FRC mixtures with 4D Dramix fibres.
Verification of the improved constitutive tensile model for fibre reinforced concrete
Mater Struct
Vandevyvere, Brecht (author) / Vandewalle, Lucie (author) / Vrijdaghs, Rutger (author) / Pauwels, Hans (author) / Li, Jiabin (author)
2024-05-01
Article (Journal)
Electronic Resource
English
Fibre reinforced concrete , Macro fibres , Constitutive tensile model , Post-cracking behaviour , Residual flexural tensile strength , Model verification Engineering , Solid Mechanics , Materials Science, general , Theoretical and Applied Mechanics , Manufacturing, Machines, Tools, Processes , Civil Engineering , Building Materials
Verification of the improved constitutive tensile model for fibre reinforced concrete
| Springer Verlag | 2024
Constitutive modelling of fibre-reinforced concrete under uniaxial tensile loading
| British Library Online Contents | 1994
| Elsevier | 2024