An orthotropic material model for steel fibre reinforced concrete based on the orientation distribution of fibres

Eik, Marika; Puttonen, Jari; Herrmann, Heiko

doi:10.1016/j.compstruct.2014.11.018

Cited by 33 publications

(17 citation statements)

References 35 publications

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“…It has been well established that adding randomly distributed steel fibers into concrete can significantly improve its compressive strength, tensile strength, ductility, and impact resistance at room temperature [19][20][21][22]. Furthermore, steel-fiber-reinforced concrete (SFRC) can be used as a primary building material in various constructions and infrastructures, for instance, ground-supported slabs, road paving, and tunnel linings, because of its outstanding performance in improving the tensile strength of concrete and its ability in controlling crack propagation [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Explosive Spalling Behavior of Steel-Fiber-Reinforced Concrete Exposed to High Temperature—A Review

et al. 2020

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Steel-fiber-reinforced concrete (SFRC) is being increasingly applied to various buildings and civil infrastructure as an advanced cementitious composite. In recent years, the requirements for SFRC in the construction industry have increased. Additionally, the fire resistance of SFRC has attracted attention; therefore, numerous investigations regarding the residual properties of SFRC have been conducted. This paper critically reviews the mechanical properties of SFRC subjected to elevated temperatures, including its residual compressive strength, flexural strength, tensile strength, elastic properties, fracture properties, and stress–strain relationships. The residual mechanical performance of SFRC and the action mechanism of steel fibers are reviewed in detail. Moreover, factors affecting the explosive spalling of concrete at high temperatures as well as the effect of steel fibers on the microstructure of heated concrete are discussed. It is demonstrated that, in general, SFRC exhibits better residual mechanical properties when exposed to elevated temperatures than plain concrete and can prevent the risk of explosive spalling more effectively. The purpose of this literature review is to provide an exhaustive insight into the feasibility of SFRC as a refractory building material; additionally, future research needs are identified.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Explosive Spalling Behavior of Steel-Fiber-Reinforced Concrete Exposed to High Temperature—A Review

et al. 2020

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“…It is well established that the addition of randomly distributed steel fibres to a cementitious matrix could improve significantly its tensile behaviour, ductility, impact and crack resistances [4][5][6][7]. Although steel fibres may not offer any obvious advantage from a fireendurance point of view, it has been shown that steel fibres can be considered as an effective way in delaying the spread of cracking, and hence potentially improve the performance of concrete after exposure to high temperatures [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of elevated temperature on pull-out behaviour of 4DH/5DH hooked end steel fibres

Abdallah

Fan

Rees

2017

Composite Structures

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This paper presents the effect of elevated temperature on the bond mechanisms associated with the pull-out behaviour of steel fibres. A series of pull-out tests have been performed on 4D and 5D hooked end steel fibres embedded in four different types of concrete, namely, normal strength concrete (NSC), medium strength concrete (MSC), high strength concrete (HSC) and ultra-high performance mortar (UHPM). At the age of 90 days, the specimens were heated to target temperatures of 100, 200, 300, 400, 500, 600, 700 and 800°C respectively. The influence of elevated temperature on the mechanical and thermal properties of concrete was investigated. The results showed that the pull-out response of both fibres does not vary significantly throughout 20-400°C temperature range, but within the temperature range of 600 to 800°C, the pull-out strength decreases significantly for all concretes. The comparisons between the two fibre types show that the mechanical anchorage contribution provided by the 5DH fibre is significantly higher than that of the 4DH fibre, especially for higher strength concretes. The reduction in bond strength of both fibres after elevated temperature exposure is found to correlate closely with the degradation in compressive strength of the concretes.

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“…The behavior of concrete designed for floors is different from that of conventional structural concrete [ 26 , 27 ]. To date, the effect of steel and polypropylene fibers on the properties of concrete formed horizontally has not been fully understood.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Steel and Polypropylene Fibers on the Properties of Horizontally Formed Concrete

Chajec

Sadowski

2020

Materials

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The article presents a comparative analysis of the impact of the addition of steel and polypropylene fibers on the properties of the concrete mixes and hardened concrete used in the concrete floor industry. The behavior of concrete intended for floors is different from conventional structural concrete because it is formed horizontally; until now, the effect of steel and polypropylene fibers on the properties of concrete formed horizontally has not yet been fully understood. Therefore, the aim of this article is to examine this issue and compare the behavior of concrete modified with steel and polypropylene fibers in concrete that is formed horizontally. The following properties of fresh concrete mixes were analyzed: consistency, the content of air-voids, and bulk density. Consequently, the following properties of hardened concrete were analyzed: compressive strength, bending tensile strength, and brittleness. It was confirmed that steel and polypropylene fibers have a different type of effect on the properties of fresh concrete mixes and hardened concrete. Finally, a combined economic and mechanical analysis was performed.

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An orthotropic material model for steel fibre reinforced concrete based on the orientation distribution of fibres

Cited by 33 publications

References 35 publications

Mechanical Properties and Explosive Spalling Behavior of Steel-Fiber-Reinforced Concrete Exposed to High Temperature—A Review

Mechanical Properties and Explosive Spalling Behavior of Steel-Fiber-Reinforced Concrete Exposed to High Temperature—A Review

Effect of elevated temperature on pull-out behaviour of 4DH/5DH hooked end steel fibres

The Effect of Steel and Polypropylene Fibers on the Properties of Horizontally Formed Concrete

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