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High-performance steel fiber reinforced concrete (SFRC) fracture. Fiber pull-out experimental investigation
HPSFRC (high-performance steel fiber-reinforced concrete) is the combination of short discrete steel (elasto-plastic) fibers with the cement based concrete matrix. The use of fibers as a reinforcement of concrete matrix serves the purpose of both increasing the tensile strength and improving the post-cracking behaviour of the material with the fibers bridging forces across crack's opened surfaces. In this paper the fiber pull-out law and pull-out capacity were determined for three different fiber geometries which are most widely used in the concrete industry. Straight fibers were used as a reference, other two were fibers with end hooks and corrugated form fibers. Besides fiber shape, other important parameters such as mechanical properties of surrounding concrete matrix (including concrete matrix with smaller fibers), fiber orientation to applied load direction and embedded length were also investigated, so that the obtained results could be appropriately related for description of post-cracking behavior of HPSFRC structural elements, i.e., beams, slabs, walls, etc. The pull-out experiments performed this far lead to the conclusions regarding the influence of different fiber shapes and different embedded lengths as well as different types of concrete matrices.
High-performance steel fiber reinforced concrete (SFRC) fracture. Fiber pull-out experimental investigation
HPSFRC (high-performance steel fiber-reinforced concrete) is the combination of short discrete steel (elasto-plastic) fibers with the cement based concrete matrix. The use of fibers as a reinforcement of concrete matrix serves the purpose of both increasing the tensile strength and improving the post-cracking behaviour of the material with the fibers bridging forces across crack's opened surfaces. In this paper the fiber pull-out law and pull-out capacity were determined for three different fiber geometries which are most widely used in the concrete industry. Straight fibers were used as a reference, other two were fibers with end hooks and corrugated form fibers. Besides fiber shape, other important parameters such as mechanical properties of surrounding concrete matrix (including concrete matrix with smaller fibers), fiber orientation to applied load direction and embedded length were also investigated, so that the obtained results could be appropriately related for description of post-cracking behavior of HPSFRC structural elements, i.e., beams, slabs, walls, etc. The pull-out experiments performed this far lead to the conclusions regarding the influence of different fiber shapes and different embedded lengths as well as different types of concrete matrices.
High-performance steel fiber reinforced concrete (SFRC) fracture. Fiber pull-out experimental investigation
Bruch von stahlfaserverstärktem Hochleistungsbeton (SFRC). Untersuchung mittels Faserausziehverfahren
Pupurs, Andrejs (author) / Krasnikovs, Andrejs (author)
2008
6 Seiten, 11 Bilder, 6 Quellen
Conference paper
English
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