Structural response of a fibre reinforced concrete pile-supported flat slab: full-scale test

Aidarov, Stanislav; Mena, Francisco; Fuente, Albert de la

doi:10.1016/j.engstruct.2021.112292

Cited by 30 publications

(26 citation statements)

References 62 publications

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“…1,5,7 Real-scale testing of elevated flat slabs confirmed the possibility of even total substitution of traditional reinforcement through using fibers in the concrete mix, this providing sufficient and even enhanced flexural and punching strength. [8][9][10][11][12][13] The promising capability of FRC technology was also confirmed in real projects: significant benefits in terms of construction time and costs were highlighted during the construction of the Ditton Nams shopping mall (Latvia), the Triangle office building (Estonia), the Rocca Al-Mare office tower (Estonia), and the LKS office building (Spain). [14][15][16] Despite the successful experiences of FRC slab construction, a number of shortcomings were revealed under special structural and/or construction conditions.…”

Section: Introductionmentioning

confidence: 98%

A limit state design approach for hybrid reinforced concrete column‐supported flat slabs

Aidarov

Tošić

Antequera

2022

Structural Concrete

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Hybrid reinforced technology (combination of steel reinforcing bars and fibers) can be considered as a competitive alternative to the already existing solutions for the construction of column-supported flat slabs. Constructed hybridreinforced buildings prove that hybrid solutions have sufficient bearing capacity to maintain structural integrity despite being exposed to high stress levels, thereby providing a beneficial solution in terms of toughness, ductility, and sustainability performance. However, the lack of design-oriented recommendations based on the accepted limit state format for dealing with both serviceability and ultimate limit states slows down the wider implementation of this technology. Considering the above-mentioned, this article presents a simplified design-oriented method that covers the evaluation of the structural response of hybrid reinforced concrete column-supported flat slabs in terms of flexural strength, cracking, and instantaneous deformations. Two hybrid reinforced alternatives for a given flat slab are studied by means of the proposed approach. Furthermore, a nonlinear finite element analysis is carried out in order to evaluate the effectiveness of the developed simplified method. Based on the achieved results, its suitable accuracy and precision can be pointed out. This outcome may motivate current practitioners to consider hybrid reinforced concrete solutions as a possible alternative during the design of residential and office buildings.

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Section: Introductionmentioning

confidence: 98%

A limit state design approach for hybrid reinforced concrete column‐supported flat slabs

Aidarov

Tošić

Antequera

2022

Structural Concrete

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“…It reduces the material capacity if fiber orientation is detrimental to the final mechanical behavior compared to the tested casting. From the experimental campaign by Aidarov et al [9], fibers showed an orientation distribution such that about 40-50% of them contributed to each main direction of the tested slab. In addition, a non-homogeneous distribution of fibers along the depth was observed in the same slab.…”

Section: Tablementioning

confidence: 99%

“…Consequently, a reinforcement reassembling the Anti Progressive Collapse (APC) reinforcement presented in [35] is proposed. As an example, the APC reinforcement was used in the experiments from Aidarov [9] as column ties, and it can provide a secondary load-carrying mechanism, as exposed in [35]. For this case, the APC reinforcement is defined as four bands of 2∅16(top) + 2∅16(bottom) rebars evenly distributed across the segment.…”

Section: Tablementioning

confidence: 99%

“…This matches how real case applications have evolved, from early usage on slabs-on-grade (with very low demands) to precast tunnel segment linings (compression under service and a relatively low bending and concentrated loads during construction phases), to one of the latest use cases, elevated slabs (bending and shear are the main design forces). Recent experiences with FRC elevated slabs from real-world applications and research campaigns showed that fibers can effectively replace all (or almost all) conventional reinforcement despite the increase of internal forces compared to initial slab-on-grade loads [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Use of fiber reinforced concrete in bridges – Metrorrey Line 2 case study

Domingo

Ramos

Aparicio

2023

Engineering Structures

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“…The incorporation of fibers in cement-based composites allows the partial or even total substitution of traditional reinforcement (reinforcing steel bars) with a positive effect on the fracture energy of the matrix [ 7 ], cracking control [ 8 , 9 , 10 , 11 , 12 ], fire resistance [ 13 , 14 , 15 ], fatigue [ 16 , 17 ], redistribution capacity [ 18 , 19 , 20 , 21 ], and impact resistance [ 22 , 23 , 24 , 25 ]. As a result, the application of FRC is already observed in a multitude of structural elements, such as precast tunnel segments [ 26 , 27 , 28 ], elevated flat slabs [ 29 , 30 , 31 ], reinforced earth-retaining walls [ 32 ], and ground-supported flat slabs for industrial applications [ 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Effects of Low Temperatures on Flexural Strength of Macro-Synthetic Fiber Reinforced Concrete: Experimental and Numerical Investigation

Aidarov¹,

Nogales²,

Reynvart³

et al. 2022

Materials

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Fiber-reinforced concrete (FRC) is an attractive alternative to traditional steel bar-reinforced concrete structures, as evidenced by the constantly increasing market consumption of structural fibers for this purpose. In spite of significant research dedicated to FRC, less attention has been given to the effects of low temperatures on the mechanical properties of FRC, which can be critical for a variety of structural typologies and regions. With this in mind, an experimental program was carried out to assess the flexural behavior of macro-synthetic fiber-reinforced concrete (MSFRC) at different temperatures (from 20 °C to −30 °C) by means of three-point bending notched beam tests. The tested MSFRCs were produced by varying the content of polypropylene fibers (4 and 8 kg/m3). The results proved that the flexural strength capacity of all MSFRCs improved with decreasing temperature. Finite element analyses were then used to calibrate constitutive models following fib Model Code 2010 guidelines and to formulate empirical adjustments for taking into account the effects of low temperatures. The outcomes of this research are the basis for future experimental and numerical efforts meant to improve the design of MSFRCs subjected to low temperatures during service conditions.

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Structural response of a fibre reinforced concrete pile-supported flat slab: full-scale test

Cited by 30 publications

References 62 publications

A limit state design approach for hybrid reinforced concrete column‐supported flat slabs

A limit state design approach for hybrid reinforced concrete column‐supported flat slabs

Use of fiber reinforced concrete in bridges – Metrorrey Line 2 case study

Effects of Low Temperatures on Flexural Strength of Macro-Synthetic Fiber Reinforced Concrete: Experimental and Numerical Investigation

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