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Meso-Scale Numerical Creep Analysis of Steel Fibre Reinforced Concrete—Effect of Aggregate and Fibre Content

Zhang, S. / Hamed, E. / Gilbert, I. / Amin, A.

Steel fibre reinforced concrete (SFRC) is a heterogeneous material with its properties strongly dependent on its composition. The effect of aggregate content and fibre content on the creep response of SFRC is investigated here using a 2D meso-scale model that is based on the finite element method. The SFRC meso-structures used for the analysis are randomly generated using a numerical algorithm. The meso-scale model treats SFRC as a three-phase composite, consisting of viscoelastic mortar, elastic coarse aggregates and elastic steel fibres. The viscoelastic response of mortar is modelled using a rate-type Kelvin chain model, whereas the fibres are modelled using truss elements. The capability of the proposed model in simulating the creep response of SFRC is demonstrated from the presented numerical examples. Parametric studies have also been carried out on various randomly generated SFRC meso-structures, which quantitatively demonstrate the effect of the aggregate and fibre content on the creep response of SFRC.

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Meso-Scale Numerical Creep Analysis of Steel Fibre Reinforced Concrete—Effect of Aggregate and Fibre Content

Zhang, S. / Hamed, E. / Gilbert, I. / Amin, A.

Steel fibre reinforced concrete (SFRC) is a heterogeneous material with its properties strongly dependent on its composition. The effect of aggregate content and fibre content on the creep response of SFRC is investigated here using a 2D meso-scale model that is based on the finite element method. The SFRC meso-structures used for the analysis are randomly generated using a numerical algorithm. The meso-scale model treats SFRC as a three-phase composite, consisting of viscoelastic mortar, elastic coarse aggregates and elastic steel fibres. The viscoelastic response of mortar is modelled using a rate-type Kelvin chain model, whereas the fibres are modelled using truss elements. The capability of the proposed model in simulating the creep response of SFRC is demonstrated from the presented numerical examples. Parametric studies have also been carried out on various randomly generated SFRC meso-structures, which quantitatively demonstrate the effect of the aggregate and fibre content on the creep response of SFRC.

Meso-Scale Numerical Creep Analysis of Steel Fibre Reinforced Concrete—Effect of Aggregate and Fibre Content

Zhang, S. / Hamed, E. / Gilbert, I. / Amin, A.

Steel fibre reinforced concrete (SFRC) is a heterogeneous material with its properties strongly dependent on its composition. The effect of aggregate content and fibre content on the creep response of SFRC is investigated here using a 2D meso-scale model that is based on the finite element method. The SFRC meso-structures used for the analysis are randomly generated using a numerical algorithm. The meso-scale model treats SFRC as a three-phase composite, consisting of viscoelastic mortar, elastic coarse aggregates and elastic steel fibres. The viscoelastic response of mortar is modelled using a rate-type Kelvin chain model, whereas the fibres are modelled using truss elements. The capability of the proposed model in simulating the creep response of SFRC is demonstrated from the presented numerical examples. Parametric studies have also been carried out on various randomly generated SFRC meso-structures, which quantitatively demonstrate the effect of the aggregate and fibre content on the creep response of SFRC.

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Title:

Meso-Scale Numerical Creep Analysis of Steel Fibre Reinforced Concrete—Effect of Aggregate and Fibre Content

Additional title:

Lecture Notes in Civil Engineering

Contributors:

Chouw, Nawawi (editor) / Zhang, Chunwei (editor) / Zhang, S. (author) / Hamed, E. (author) / Gilbert, I. (author) / Amin, A. (author)

Conference:

Australasian Conference on the Mechanics of Structures and Materials ; 2023 ; Auckland, New Zealand

Published in:

Proceedings of the 26th Australasian Conference on the Mechanics of Structures and Materials ; Chapter: 9 ; 89-97

Lecture Notes in Civil Engineering ; 513

Publication date:

2024-09-03

Size:

9 pages

ISBN:

978-981-97-3397-2 , 978-981-97-3396-5

ISSN:

2366-2565 , 2366-2557

DOI:

https://doi.org/10.1007/978-981-97-3397-2_9

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Creep , Finite element analysis , Meso-scale model , Steel fibre reinforced concrete , Viscoelasticity Engineering , Solid Mechanics , Structural Materials , Sustainable Architecture/Green Buildings , Civil Engineering , Computer-Aided Engineering (CAD, CAE) and Design

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