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Experimental and numerical assessment of size effect in geometrically similar slender concrete beams with basalt reinforcement
Graphical abstractComparison of experimental results on concrete beams of similar geometry with basalt bars and steel bars and with analytical size effect rule, Type 2 by Bazant (logarithmic scale): (a) present experiments on slender concrete beams with basalt bars, (b) previous experiments on slender concrete beams with steel bars and (c) analytical size effect rule.
HighlightsWe investigate a size effect in concrete beams with basalt reinforcement.We compare experiments with basalt bars with corresponding using steel bars.We use a coupled elasto-plastic-damage formulation with nonlocal softening.We elaborate some recommendations for the engineering practice.
AbstractThe paper presents a comprehensive experimental and numerical analysis of slender rectangular reinforced concrete beams with longitudinal BFRP bars without shear reinforcement subjected to 3-point bending. The experiments included 4 different beams which were similar in two directions. The main research objective was to investigate the size effect on the nominal shear strength of beams. The detailed experimental analysis of beam strength, failure mode and cracking evolution was presented and compared with previous test results on beams reinforced by ordinary steel bears. The experiments with BFRP bars were numerically reproduced using the 2D finite element method based on a coupled elastic-plastic-damage formulation. In order to describe strain localization in concrete, a non-local constitutive model was applied with account for a characteristic length of micro-structure developing in the softening regime. The numerical results were in satisfactory agreement with the experimental data. Advantages and disadvantages of BFRP reinforcement in concrete beams were next outlined.
Experimental and numerical assessment of size effect in geometrically similar slender concrete beams with basalt reinforcement
Graphical abstractComparison of experimental results on concrete beams of similar geometry with basalt bars and steel bars and with analytical size effect rule, Type 2 by Bazant (logarithmic scale): (a) present experiments on slender concrete beams with basalt bars, (b) previous experiments on slender concrete beams with steel bars and (c) analytical size effect rule.
HighlightsWe investigate a size effect in concrete beams with basalt reinforcement.We compare experiments with basalt bars with corresponding using steel bars.We use a coupled elasto-plastic-damage formulation with nonlocal softening.We elaborate some recommendations for the engineering practice.
AbstractThe paper presents a comprehensive experimental and numerical analysis of slender rectangular reinforced concrete beams with longitudinal BFRP bars without shear reinforcement subjected to 3-point bending. The experiments included 4 different beams which were similar in two directions. The main research objective was to investigate the size effect on the nominal shear strength of beams. The detailed experimental analysis of beam strength, failure mode and cracking evolution was presented and compared with previous test results on beams reinforced by ordinary steel bears. The experiments with BFRP bars were numerically reproduced using the 2D finite element method based on a coupled elastic-plastic-damage formulation. In order to describe strain localization in concrete, a non-local constitutive model was applied with account for a characteristic length of micro-structure developing in the softening regime. The numerical results were in satisfactory agreement with the experimental data. Advantages and disadvantages of BFRP reinforcement in concrete beams were next outlined.
Experimental and numerical assessment of size effect in geometrically similar slender concrete beams with basalt reinforcement
Korol, E. (author) / Tejchman, J. (author) / Mróz, Z. (author)
Engineering Structures ; 141 ; 272-291
2017-03-06
20 pages
Article (Journal)
Electronic Resource
English
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