Interaction between steel fibers and cement based matrixes

Maage, M

doi:10.1007/bf02478831

Cited by 19 publications

(7 citation statements)

References 4 publications

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“…The effectiveness of a given fiber as a medium of stress transfer (and indirectly the fiber/matrix interface properties) is often assessed using a single fiber pullout test, where fiber slip is monitored as a function of the applied load on the fiber Banthia and Trottier 1994). In spite of the belief held in the past that no correlation exists between the behavior of fiber in a single fiber pullout test and its behavior in a real composite (Hughes and Fattuhi 1975;Maage 1977), the data derived from single pullout tests can give relevant contribution to optimize the properties of fiber reinforcement cement composites. The available research indicates that there is not an ideal test or model to fully predict the mechanical behavior of steel fiber reinforced concrete, even for the basic case of uniaxial tension, since the relationships withdrawn from the uniaxial tension test can not be representative of all fiber types and cement matrices.…”

Section: Introductionmentioning

confidence: 94%

Pullout Behavior of Steel Fibers in Self-Compacting Concrete

Cunha

Barros

Sena-Cruz

2010

J. Mater. Civ. Eng.

188

139

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In steel fiber reinforced composites materials, fiber and matrix are bonded together through a weak interface. The study of this interfacial behavior is important for understanding the mechanical behavior of such composites. Moreover, with the outcome of new composites materials with improved mechanical properties and advanced cement matrices, such in the case of steel fiber reinforced self-compacting concrete, the study of the fiber/matrix interface assumes a new interest. In the present work, experimental results of both straight and hooked end steel fibers pullout tests on a self-compacting concrete medium are presented and discussed. Emphasis is given to the accurate acquirement of the pullout load versus endslip relationship. The influence of fiber embedded length and orientation on the fiber pullout behavior is studied. Additionally, the separate assessment of the distinct bond mechanisms is performed, by isolating the adherence bond from the mechanical bond provided by the hook. Finally, analytical bond-slip relationships are obtained by back-analysis procedure with an interfacial cohesive model.

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Section: Introductionmentioning

confidence: 94%

Pullout Behavior of Steel Fibers in Self-Compacting Concrete

Cunha

Barros

Sena-Cruz

2010

J. Mater. Civ. Eng.

188

139

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show abstract

“…9a). Fibers with an inclination angle smaller than 60° have a pullout force approximately equivalent to a straight fiber (maximal difference: less than 20% 5,13 ). The inclination range above 60°, which experienced the largest pullout force variations, is the most accurately documented by this process (more pixels used for determining the major ellipse axis).…”

Section: Applicationmentioning

confidence: 99%

Tomography Analysis of Fiber Distribution and Orientation in Ultra High-Performance Fiber-Reinforced Composites With High-Fiber Dosages

Wuest¹,

Denarié²,

Brühwiler³

et al. 2008

Experimental Techniques

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“…The interfacial bond and the anchorage between fiber and matrix govern the mechanical properties of the composite in the post-cracking regime [37][38][39][40][41]. However, it should be noted that a significantly strong bond between fiber and matrix does not guarantee the ductility of the material by itself, since in addition to the quality of the interface, the quality of the fiber and matrix individually must be considered.…”

Section: Introductionmentioning

confidence: 99%

On the mechanical properties and crack pattern analysis of a strain-hardening cement-based composite reinforced by natural sisal fibers

et al. 2022

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Besides the strength enhancement and strain improvement (strain-hardening behavior), the use of natural fibers as reinforcement in cement-based matrices can also be highlighted as an economical and eco-friendly alternative for the future of the construction industry. In the present work, cement-based composites reinforced by natural sisal fibers were produced and tested under direct tensile loading. The Portland cement was partially replaced by pozzolans (metakaolin -MK and fly ash -FA), aiming to produce a calcium hydroxide-free matrix to ensure the durability of the fibers. The natural sisal fibers were used in a 5% volume fraction (in mass), divided into three layers. The mechanical properties of composite plates were compared to other literature results and demonstrated to be compatible with recent research. The crack pattern was analyzed by Digital Image Correlation (DIC) for a better understanding of their failure mechanisms. The material presented a tensile strength increase after the first crack formation, marked by multiple cracking partners from this point. Finally, a comparison between direct (LVDTs) and indirect (DIC) methods of strain measurement was done and demonstrated minor results for the DIC, approximately 84% of those obtained from the LVDTs.

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Interaction between steel fibers and cement based matrixes

Cited by 19 publications

References 4 publications

Pullout Behavior of Steel Fibers in Self-Compacting Concrete

Pullout Behavior of Steel Fibers in Self-Compacting Concrete

Tomography Analysis of Fiber Distribution and Orientation in Ultra High-Performance Fiber-Reinforced Composites With High-Fiber Dosages

On the mechanical properties and crack pattern analysis of a strain-hardening cement-based composite reinforced by natural sisal fibers

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