Abstract
Concrete properties, such as toughness and ductility, are enhanced to resist different impacts or blast loads. Rubberized concrete, which could be considered a green material, is produced from recycled waste tires grinded into different crumb rubber particle sizes and mixed with concrete. In this study, the behavior of rubberized steel fiber-reinforced concrete is investigated. Flexural performance of concrete beams (400×100×100 mm) manufactured from plain, steel fiber, crumb rubber and combination crumb rubber and steel fiber are also evaluated. Similarly, concrete slabs (500×500×50 mm) are also tested under flexural loading. Flexural performance of the SFRRC mixtures was significantly enhanced. The toughness and maximum deflection of specimens with rubber were considerably improved. Steel fiber/crumb rubber-reinforced concrete can be used for practical application, which requires further studies.
Highlights
Resistance of concrete structures against the effects of impact loading, which may suddenly occur, has been the focus of considerable attention
Rubberized concrete could be considered a green material produced by recycling waste tires from different crumb rubber particles and mixed with concrete by replacing a specified portion of aggregate
Similar ratios of crumb rubber were combined with the steel fiber concrete (SFC) mixture
Summary
Resistance of concrete structures against the effects of impact loading, which may suddenly occur, has been the focus of considerable attention. The effect of crumb rubber inclusion as partial replacement of fine aggregate volume at three different ratios, namely, 17.5%, 20%, and 22.5%, into plain concrete (PC) was investigated. Similar ratios of crumb rubber were combined with the steel fiber concrete (SFC) mixture. Concrete mixtures were prepared with different replacement ratios of fine river sand volume by crumb rubber particles. The test was stopped when the measured mid-span deflection of the concrete slabs reached approximately several millimeters This test was www.etasr.com conducted to investigate the effect of combined steel fiber and crumb rubber on the static test results of slabs with different percentages of crumb rubber as green material with enhanced energy absorption capacity, as previously reported [7]
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