Failure of fiberconcrete beam having layered structure

Vitalijs Lusis, Andrejs Krasnikovs

Abstract


As it has been found out, fiberconcrete has many positive attributes, which make that material a target of the numerous investigations. Traditionally fibers are homogeneously dispersed in the concrete volume. At the same time, in many situations fiber reinforced concrete with homogeneously dispersed fibers is not optimal (the majority of added fibers do not participate in the load bearing process). In the present investigation it has been demonstrated that the use of homogeneous fiberconcrete in eccentrically loaded and subjected to bending structures is not rational from mechanical and economical point of view. Fiber reinforced concrete prisms with homogeneous and layered fiber distribution inside them were elaborated. Prisms were tested under four point bending till macro-crack opening of 4mm and more was reached. Load bearing capacities at different load bearing stages of differently made prisms were compared.

Keywords:
non-homogeneous fiberconcrete, layered distribution, steel fibers, failure

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References


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DOI: 10.7250/iscconstrs.2014.16

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