Flexural and Shear Behavior of Hybrid Deck Structures Composed of Textile Reinforced Concrete Integrated Formwork and Reinforced Concrete

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Abstract

In recent years, the integration of textile-reinforced concrete (TRC) and reinforced concrete (RC) has emerged as a promising strategy for developing hybrid structures. This study investigates the flexural and shear behaviour of a hybrid deck slab structure comprising TRC-integrated formwork and RC components. The customisable cross-section of the TRC formwork allows adaptation to specific requirements, and the composite material can be tailored for high load-bearing capacity. The flexural and shear behaviour of TRC-RC hybrid decks was investigated through 3-point and 4-point bending tests on this specific hybrid deck type. Eight specimens were analysed in four separate series, with aspect ratios (a/d) varying from 1.6 to 2.9. The test results highlight the adaptability of the TRC integrated formwork with its customisable cross-section and substantial load-bearing capacity, particularly suitable for bridge deck composite structures. The formwork's cracking load surpasses the required strength during construction. Additionally, the TRC formwork improves load-carrying capacity, stiffness, and ductility, acting as a beneficial shear connector between concrete layers. The hybrid deck specimens display minimal, fine cracks, indicating enhanced crack resistance, improved serviceability, and reduced crack occurrence. Shear compressive and diagonal shear failures were noted in specimens with aspect ratios ranging from 1.6 to 2.3. The TRC formwork successfully averted transverse cracks at the interface, ensuring enhanced interfacial bond strength and structural integrity.

Author Biography

Huy Cuong Nguyen, University of Transport and Communications, No.3 Cau Giay street, Hanoi, Vietnam.

Dr. Nguyen serves as a lecturer and researcher at the University of Transport and Communications. His professional focus revolves around the analysis of concrete structures, with a specific interest in the applications of textile-reinforced concrete. Dr. Nguyen's expertise lies in exploring innovative approaches to enhance the performance and applications of concrete materials, particularly through the integration of textile reinforcements.

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Published

2024-05-24

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Articles