Constitutive modelling of fibre-reinforced concrete under uniaxial tensile loading

Jyrki Kullaa

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The mechanics of fibre-reinforced concrete under uniaxial loading has been studied, the main part of the study considering the behaviour after cracking. A new constitutive model has been developed, which takes into account the strain-softening part of the stress/strain curve. In addition, the crack spacing and the crack width are calculated. The fibres are smooth and flexible. They can be short or continuous, aligned or randomly distributed, brittle or ductile, hard or soft. Moreover, different types of fibre may lie in the same matrix. The model takes into account single-fracture or multiple-cracking states and the different fracture mechanisms of fibre fracture and pull-out. The results of the new model are promising. The effects of different parameters can be studied and new formulas found, thus enabling the model to be used in the design of composite materials.
Original languageEnglish
Pages (from-to)935-944
Number of pages10
JournalComposites
Volume25
Issue number10
DOIs
Publication statusPublished - 1994
MoE publication typeA1 Journal article-refereed

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Reinforced concrete
Fibers
Cracks
Stress-strain curves
Constitutive models
Mechanics
Composite materials

Cite this

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title = "Constitutive modelling of fibre-reinforced concrete under uniaxial tensile loading",
abstract = "The mechanics of fibre-reinforced concrete under uniaxial loading has been studied, the main part of the study considering the behaviour after cracking. A new constitutive model has been developed, which takes into account the strain-softening part of the stress/strain curve. In addition, the crack spacing and the crack width are calculated. The fibres are smooth and flexible. They can be short or continuous, aligned or randomly distributed, brittle or ductile, hard or soft. Moreover, different types of fibre may lie in the same matrix. The model takes into account single-fracture or multiple-cracking states and the different fracture mechanisms of fibre fracture and pull-out. The results of the new model are promising. The effects of different parameters can be studied and new formulas found, thus enabling the model to be used in the design of composite materials.",
author = "Jyrki Kullaa",
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year = "1994",
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Constitutive modelling of fibre-reinforced concrete under uniaxial tensile loading. / Kullaa, Jyrki.

In: Composites, Vol. 25, No. 10, 1994, p. 935-944.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Constitutive modelling of fibre-reinforced concrete under uniaxial tensile loading

AU - Kullaa, Jyrki

N1 - Project code: RTE3906

PY - 1994

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AB - The mechanics of fibre-reinforced concrete under uniaxial loading has been studied, the main part of the study considering the behaviour after cracking. A new constitutive model has been developed, which takes into account the strain-softening part of the stress/strain curve. In addition, the crack spacing and the crack width are calculated. The fibres are smooth and flexible. They can be short or continuous, aligned or randomly distributed, brittle or ductile, hard or soft. Moreover, different types of fibre may lie in the same matrix. The model takes into account single-fracture or multiple-cracking states and the different fracture mechanisms of fibre fracture and pull-out. The results of the new model are promising. The effects of different parameters can be studied and new formulas found, thus enabling the model to be used in the design of composite materials.

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