Anchorage in steel fiber reinforced concrete – concept, experimental evidence and design recommendations for concrete cone and concrete edge breakout failure modes

Tóth, Máté; Bokor, Boglárka; Sharma, Akanshu

doi:10.1016/j.engstruct.2018.12.007

Cited by 62 publications

(29 citation statements)

References 5 publications

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“…In their paper, Dizhur et al [24] investigated the failure mode of adhesive anchor connection in unreinforced clay brick walls. Tóth et al [25] carried out tension and shear tests on single anchor as well on anchor groups in HPFRC. Use of disperse reinforcement results in higher concrete cone capacity.…”

Section: Introductionmentioning

confidence: 99%

Influence of Different Fiber Dosages on the Behaviour of Façade Anchors in High-Performance Concrete

et al. 2021

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The behaviour of façade anchors in high performance fiber reinforced concrete (HPFRC) has not been investigated in sufficient detail in recent years. The regulations in the European Technical Approvals also do not fully describe the load-bearing capacity of anchor systems. Due to the increase in the production of HPFRC elements, it is necessary to analyse the impact of added fibers in the concrete composition on the behaviour of anchors. In particular, the behaviour of anchors in filigree façade elements, which is one of the main application areas of the programme of polypropylene (PP) fiber-reinforced concrete, is therefore analysed. With a sufficient content of PP fibers surrounding the steel anchors oriented in an optimal direction, the fibers may enhance both the load-bearing capacity of anchors and the ductility of concrete. However, unfavourable effects on the installation process or even on the load-bearing capacity may also occur due to unfavourable fiber orientation. Therefore, tensile and punching tests were carried out in uncracked concrete with different types of anchor systems containing a tension anchor and an adjustable spacer bolt. The PP fiber content of the concrete component varied during the tests.

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Section: Introductionmentioning

confidence: 99%

Influence of Different Fiber Dosages on the Behaviour of Façade Anchors in High-Performance Concrete

et al. 2021

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“…Recently, for an anchor in SFRC, Nilforoush et al [31] evaluated the breakout concrete capacity of an anchor bolt in SFRC members under tensile load and showed a great increase in the tensile resistance and toughness of the anchor. Tóth and Boker [32] investigated the behavior of anchorages in SFRC and showed increases in concrete breakout capacity and displacement due to the presence of fibers. Mahrenholtz et al [33] performed experiments on anchor channel bolt systems in plain and fiber-reinforced concrete to develop the basis of the design rules for fasteners installed in FRC.…”

Section: Introductionmentioning

confidence: 99%

Shear Failure Mode and Concrete Edge Breakout Resistance of Cast-In-Place Anchors in Steel Fiber-Reinforced Normal Strength Concrete

2020

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Concrete edge failure of a single anchor in concrete is strongly dependent on the tensile performance of the concrete, which can be greatly improved by the addition of steel fibers. This study investigated the effect of steel fibers on the shear failure mode and edge breakout resistance of anchors installed in steel fiber-reinforced concrete (SFRC) with fiber volume percentages of 0.33, 0.67, and 1.00%. The anchor used in the study was 30 mm in diameter, with an edge distance of 75 mm and embedment depth of 240 mm. In addition to the anchor specimens, beam specimens were prepared to assess the relationship between the tensile performance of SFRC beams and the shear resistance of SFRC anchors. The ultimate flexural strength of the beam and the breakout shear resistance of the anchor increased almost linearly with increasing volume fractions of fiber. Therefore, based on the ACI 318 design equation, a term was proposed using the ultimate flexural strength of concrete instead of the compressive strength to determine the concrete breakout shear resistance of an anchor in the SFRC. The calculated shear resistance of anchors in both the plain concrete and SFRC were in good agreement with the measurements. In addition to the load capacity of the SFRC anchors, the energy absorption capacity showed a linear increase with that of the SFRC beam.

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“…The reinforcing contribution of steel fibers can be mobilized in planar SFRC elements, such as elevated SFRC slabs, as the primary reinforcement 29 . Many studies conducted, in recent years, on the specifications and characteristics of fiber reinforced concrete, including the effects of volume, aspect ratio, geometry, alignment and resistance of fibers 30–44 . Most studies have been focused on concrete technology and structural components such as beams, columns and connections.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on seismic performance of steel fiber reinforced concrete wall piers

Babaei

Mortezaei

Salehian

2020

Structural Concrete

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Extensive damage to the bridges in recent earthquakes has revealed the vulnerability of these structures to the seismic excitation. Bridge piers play a key role in maintaining the operability of the bridge structure during and after earthquakes. As determinant elements in single‐pier bridges, wall piers significantly affect the bridge structure behavior. Hence, the present experimental study was conducted to examine the seismic performance of wall piers made of modern materials, that is, fiber reinforced concrete (FRC) in RC bridges. Eight wall piers made of steel fiber reinforced concrete (SFRC) with different aspect ratios, steel percentages and concrete strength were subjected to lateral load. The results showed that using SFRC reduced the steel strain within the serviceability range. Compared to conventional concrete, SFRC changes failure modes and deformational characteristics and also increases the energy dissipation capacity, stiffness in every drift values, load‐bearing capacity as well as yielding length.

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Anchorage in steel fiber reinforced concrete – concept, experimental evidence and design recommendations for concrete cone and concrete edge breakout failure modes

Cited by 62 publications

References 5 publications

Influence of Different Fiber Dosages on the Behaviour of Façade Anchors in High-Performance Concrete

Influence of Different Fiber Dosages on the Behaviour of Façade Anchors in High-Performance Concrete

Shear Failure Mode and Concrete Edge Breakout Resistance of Cast-In-Place Anchors in Steel Fiber-Reinforced Normal Strength Concrete

Experimental study on seismic performance of steel fiber reinforced concrete wall piers

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