Velocity gradients of concrete mass reconstructed based on measured fibre orientations in hardened concrete

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Velocity gradients of concrete mass reconstructed based on measured fibre orientations in hardened concrete. / Eik, Marika; Papenfuss, Christina.

In: Composite Structures, Vol. 225, 111008, 01.10.2019.

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@article{8f8d2e29c3324b118963209cb6439dd9,
title = "Velocity gradients of concrete mass reconstructed based on measured fibre orientations in hardened concrete",
abstract = "During the casting of steel fibre reinforced concrete (SFRC) the orientation of fibres is influenced by flow dynamics of concrete mass. A simple theoretical model presented allows the calculation of velocity gradient matrices for concrete mass based on steel fibre orientations measured in the hardened concrete samples taken from the different regions in the slabs. This made it possible to examine the realistic trends of the flow near the formwork or free surface or in the bulk material. Eigenvalues and eigenvectors of the matrices show the directions of the maximal and minimal velocity changes, which can be compared in different positions of the slabs. The outcomes of the study can contribute to controlled production technology of SFRC.",
keywords = "fibres, reinforced cement/plaster, anisotrophy, rheological properties, Reinforced cement/plaster, Anisotropy, Fibres, Rheological properties",
author = "Marika Eik and Christina Papenfuss",
year = "2019",
month = "10",
day = "1",
doi = "10.1016/j.compstruct.2019.111008",
language = "English",
volume = "225",
journal = "Composite Structures",
issn = "0263-8223",

}

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TY - JOUR

T1 - Velocity gradients of concrete mass reconstructed based on measured fibre orientations in hardened concrete

AU - Eik, Marika

AU - Papenfuss, Christina

PY - 2019/10/1

Y1 - 2019/10/1

N2 - During the casting of steel fibre reinforced concrete (SFRC) the orientation of fibres is influenced by flow dynamics of concrete mass. A simple theoretical model presented allows the calculation of velocity gradient matrices for concrete mass based on steel fibre orientations measured in the hardened concrete samples taken from the different regions in the slabs. This made it possible to examine the realistic trends of the flow near the formwork or free surface or in the bulk material. Eigenvalues and eigenvectors of the matrices show the directions of the maximal and minimal velocity changes, which can be compared in different positions of the slabs. The outcomes of the study can contribute to controlled production technology of SFRC.

AB - During the casting of steel fibre reinforced concrete (SFRC) the orientation of fibres is influenced by flow dynamics of concrete mass. A simple theoretical model presented allows the calculation of velocity gradient matrices for concrete mass based on steel fibre orientations measured in the hardened concrete samples taken from the different regions in the slabs. This made it possible to examine the realistic trends of the flow near the formwork or free surface or in the bulk material. Eigenvalues and eigenvectors of the matrices show the directions of the maximal and minimal velocity changes, which can be compared in different positions of the slabs. The outcomes of the study can contribute to controlled production technology of SFRC.

KW - fibres

KW - reinforced cement/plaster

KW - anisotrophy

KW - rheological properties

KW - Reinforced cement/plaster

KW - Anisotropy

KW - Fibres

KW - Rheological properties

UR - http://www.scopus.com/inward/record.url?scp=85066948295&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2019.111008

DO - 10.1016/j.compstruct.2019.111008

M3 - Article

VL - 225

JO - Composite Structures

JF - Composite Structures

SN - 0263-8223

M1 - 111008

ER -

ID: 34337489