This study offers a comprehensive analysis of Fiber -Reinforced Self -Compacting Concrete (FRSCC) with a focus on shear bond strength influenced by specific compositions of microsilica, zeolite, slag, and polypropylene fibers. Twenty distinct FRSCC mixes underwent extensive testing, including 28 -day compressive strength, tensile strength assessments, and push -out and slant shear tests. A significant outcome is the strong correlation between the push -out and slant shear test results, exemplified by an R 2 value of 0.88, confirming the push -out test as a viable and practical alternative for bond strength assessment. Experimentally, fibers were found to enhance tensile strength, with the inclusion of 15% microsilica and slag further amplifying this effect, highlighting the critical role of precise pozzolan selection in achieving optimal mechanical performance and workability in FRSCC. Furthermore, the study introduces a fuzzy logic system for predicting shear bond strength, achieving high predictive accuracy with R 2 values reaching up to 0.96, depending on the t -norms utilized. This research not only validates the push -out test as a reliable method for evaluating shear bond strength in FRSCC but also demonstrates the efficacy of the fuzzy logic approach, representing a groundbreaking contribution in both computational analysis and practical methodology for concrete structural integrity.

Integrating push-out test validation and fuzzy logic for bond strength study of fiber-reinforced self-compacting concrete / Shafaie, Vahid; Ghodousian, Oveys; Ghodousian, Amin; Cucuzza, Raffaele; MOVAHEDI RAD, Majid. - In: CONSTRUCTION AND BUILDING MATERIALS. - ISSN 0950-0618. - 425:(2024). [10.1016/j.conbuildmat.2024.136062]

Integrating push-out test validation and fuzzy logic for bond strength study of fiber-reinforced self-compacting concrete

Raffaele Cucuzza;Majid Movahedi Rad
2024

Abstract

This study offers a comprehensive analysis of Fiber -Reinforced Self -Compacting Concrete (FRSCC) with a focus on shear bond strength influenced by specific compositions of microsilica, zeolite, slag, and polypropylene fibers. Twenty distinct FRSCC mixes underwent extensive testing, including 28 -day compressive strength, tensile strength assessments, and push -out and slant shear tests. A significant outcome is the strong correlation between the push -out and slant shear test results, exemplified by an R 2 value of 0.88, confirming the push -out test as a viable and practical alternative for bond strength assessment. Experimentally, fibers were found to enhance tensile strength, with the inclusion of 15% microsilica and slag further amplifying this effect, highlighting the critical role of precise pozzolan selection in achieving optimal mechanical performance and workability in FRSCC. Furthermore, the study introduces a fuzzy logic system for predicting shear bond strength, achieving high predictive accuracy with R 2 values reaching up to 0.96, depending on the t -norms utilized. This research not only validates the push -out test as a reliable method for evaluating shear bond strength in FRSCC but also demonstrates the efficacy of the fuzzy logic approach, representing a groundbreaking contribution in both computational analysis and practical methodology for concrete structural integrity.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2994031