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Strength and crack resistance of rubber and reinforced concrete T-beams
The purpose of this study is to compare the strength, crack resistance and deformation of T-section beams made of reinforced concrete, rubber concrete and fiber rubber concrete. Rubber concrete (or abbreviated rubcon) is a highly effective composite polymer concrete based on liquid rubber, which has favorable physical and mechanical characteristics, as well as almost universal chemical resistance to aggressive media. This article presents the results of testing prototypes of T-beams using the following procedure. The beams were tested for bending by two forces applied in thirds of the span, increasing until failure. As longitudinal reinforcement, rods of class A500C were used. As transverse - Bp500, 5 mm in diameter, with a pitch of 50 mm. Fiber reinforcement is represented by steel fibers (ratio of diameter to fiber length 1/100), located randomly throughout the volume of the experimental beams. The section of the beams is assigned taking into account the requirements of SP 63.13330.2018 "Concrete and reinforced concrete structures": length - 1400 mm; web height - 95 mm; web width - 60 mm; flange height - 25 mm; flange width - 240 mm. It was found that the value of the destructive experimental bending moment in reinforced concrete beams is 1.20 times less than in rubcon and fiber rubcon beams. It was revealed that the most effective use of the strength of a normal section before reaching the maximum allowable deflection is observed in a rubcon beam (BKT240x95x25-2x10).
Strength and crack resistance of rubber and reinforced concrete T-beams
The purpose of this study is to compare the strength, crack resistance and deformation of T-section beams made of reinforced concrete, rubber concrete and fiber rubber concrete. Rubber concrete (or abbreviated rubcon) is a highly effective composite polymer concrete based on liquid rubber, which has favorable physical and mechanical characteristics, as well as almost universal chemical resistance to aggressive media. This article presents the results of testing prototypes of T-beams using the following procedure. The beams were tested for bending by two forces applied in thirds of the span, increasing until failure. As longitudinal reinforcement, rods of class A500C were used. As transverse - Bp500, 5 mm in diameter, with a pitch of 50 mm. Fiber reinforcement is represented by steel fibers (ratio of diameter to fiber length 1/100), located randomly throughout the volume of the experimental beams. The section of the beams is assigned taking into account the requirements of SP 63.13330.2018 "Concrete and reinforced concrete structures": length - 1400 mm; web height - 95 mm; web width - 60 mm; flange height - 25 mm; flange width - 240 mm. It was found that the value of the destructive experimental bending moment in reinforced concrete beams is 1.20 times less than in rubcon and fiber rubcon beams. It was revealed that the most effective use of the strength of a normal section before reaching the maximum allowable deflection is observed in a rubcon beam (BKT240x95x25-2x10).
Strength and crack resistance of rubber and reinforced concrete T-beams
Aleksei, Polikutin (author) / Yuri, Potapov (author) / Pavel, Zyabukhin (author) / Theophilus, Oforkaja (author) / Karakchi-Ogli, Davud (author) / Akimov, Pavel (editor) / Tusnin, Alexander (editor) / Sokolova, Alla (editor)
PROCEEDINGS OF THE II SCIENTIFIC CONFERENCE “MODELLING AND METHODS OF STRUCTURAL ANALYSIS” ; 2021 ; Moscow, Russian Federation
AIP Conference Proceedings ; 2497
2023-05-04
8 pages
Conference paper
Electronic Resource
English
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