Abstract:The use of steel fibers in the concrete is mainly aimed at increasing the post-peak toughness, due to the adhesion of the fibers to the cementitious matrix. However, there are several typologies of steel fibers, and the main differences are in the form (relation between length and diameter), fiber geometry, and the characterization between macrofibers and microfibers, which generally serve to reduce macrocracking and microcracking, respectively. In this context, this work evaluated the use of microfibers (20 k… Show more
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