Influence of steel and/or polypropylene fibres on the behaviour of concrete at high temperature: Spalling, transfer and mechanical properties

Yermak, Nonna; Pliya, Prosper; Beaucour, Anne-Lise; Simon, Alain; Noumowé, Albert

doi:10.1016/j.conbuildmat.2016.11.120

Cited by 201 publications

(84 citation statements)

References 20 publications

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“…The addition of fibers greatly improves the thermal andmechanical behavior of concrete [7].The decrease in residual strength and thermal expansion of High Strength concrete noticed at higher temperature [8].Finite element analysis of SFRC beams subjected to bending shows a good agreement with the experimental failure study [9].FRC with incorporation of PPF or SF is good substitute to plain concrete since its strength, performance in high temperatures are better and setback the concrete spalling [10].The addition of steel fibers to plain concrete increases the flexural strength up to 1.5%, decreases in case of 2% [12].Fibres in concrete prevent the crack propagation so that formation of voids can be eliminated [13]. From the literatures it was concluded that the addition of fibers greatly improves the thermal and mechanical behavior of concrete.…”

Section: Introductionmentioning

confidence: 56%

Transient Thermal Effect of FRC Incorporated PECC under High Temperature

Jeyanthi¹,

Vincent²

2019

IJRTE

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In this paper thermal behavior of Partially Encased Composite column (PECC) made of Fiber Reinforced Concrete (FRC) has been carried out. Steel wool (SW) and carbon fiber (CF) were used to make fiber reinforced concrete (FRC) specimens. The fiber proportion was varied from 0 to 1%. From the Compressive strength test it was observed that FRC with 0.5%CF-0.5%SW has more strength, to be the best proportion among the tested specimens. Transient thermal analysis of PECC made of FRC was carried out by ANSYS 17.2 The temperature range was considered from 400ºC to 800ºC with a time frame of 30 to 120 minutes, for the time interval of 30 minutes as per ISO 834.From the analysis it was observed that temperature at the core of fibre incorporated PECC was found to be very less i.e. 11ºC to 26 ºC compared to surface temperature of 400 ºC to 800 ºC and slows down the heat transfer from surface to core, made the column for high temperature application.

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Section: Introductionmentioning

confidence: 56%

Transient Thermal Effect of FRC Incorporated PECC under High Temperature

Jeyanthi¹,

Vincent²

2019

IJRTE

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“…Fibrous material in its composition allows to completely prevent explosive spalling, which is obtained in other works [21,23]. And it can be both polypropylene fiber, as in this work, and steel fiber [22,24].…”

mentioning

confidence: 63%

“…To reduce the consequences of explosive spalling of concrete in the protective layer of building structures, anti-crack grids are installed or fire retardant coatings are used to reduce the intensity of concrete heating during a fire [20]. However, modern research has shown that the most effective way to protect concrete from explosive spalling is to introduce additives in the form of fibrous materials into the concrete mix from the point of view of labor intensity and material costs [21][22][23].…”

Section: Figure 1 Explosive Spalling Of Concretementioning

confidence: 99%

Increase of fire resistance of reinforced concrete structures with polypropylene microfiber

Gravit

Golub

2018

MATEC Web Conf.

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The increase in the construction of high-rise, technically complex buildings and structures is a prerequisite for the widespread use of structures of heavy concrete. In this work, a special type of destruction of this type of concrete is considered in the fire action explosive spalling. One method of protection is polypropylene microfiber, the objective of which is to increase the fire resistance of concrete and reinforced concrete structures. The fire resistance tests of the reinforced concrete structure with the use of microfiber and without it have been carried out. It is shown that polypropylene microfiber can completely prevent explosive spelling of concrete. In addition, the introduction of additives in the form of fibrous materials into the concrete mix is the most optimal from the point of view of labor intensity and material costs.

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“…2017'de PP lif tipinin ve dozunun ısının neden olduğu beton dökülme eğilimine etkisini [16], Yermak ve diğ. 2017'de çelik ve PP liflerin yüksek sıcaklıktaki beton davranışı üzerindeki etkisini [17], Saber Fallah ve diğ. 2017'de PP liflerinin, nano-silika ve silis dumanı içeren yüksek mukavemetli betonun mekanik özellikleri ve dayanıklılığı üzerine etkisini [18], Sadiqul Islam ve diğ.…”

Section: Introductionunclassified

Examination of the effects of CaCO3 reinforced and unreinforced polypropylenes which is substituted with a fine aggregate on traditional concrete properties

Şimşek¹,

Uygunoğlu²

2018

Pamukkale J Eng Sci

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Düşük yoğunluk değerine, yüksek ısı ve korozyon direncine sahip olan polipropilen gittikçe yapı malzemeleri sektörü için daha cazip hale gelmektedir. Bununla birlikte polipropilenin tek başına kullanımı yapı malzemesinin mekanik dayanımını düşürmesi bakımından bazı dezavantajlar içerir. Polipropilenin yapı malzemeleri içerisindeki uygulamalarında bu dezavantajın ortadan kaldırılması için polipropilen kompozitleri tercih edilmektedir. Bu çalışmada, CaCO3 takviyeli polipropilen içeren betonun tanımlanan kalite ölçütleri sırası ile termal iletkenlik, elektrik direnci, 3, 7, 28 gün basınç dayanımları, 28 günlük yarmada çekme dayanımı ve su emme oranı olarak belirlenmiştir. Deneylerde ince agrega yerine %0, %10, %20, %30 ve %40 oranlarında CaCO3 takviyeli polipropilen kullanılmıştır. Dolgulu CaCO3/PP takviyeli beton özellikleri kontrol betonu ile kıyaslandığında %34.5 daha düşük 28 günlük basınç dayanımına, %24.7 oranında daha düşük termal iletkenliğe, %50.7 daha yüksek elektrik direncine sahiptir.Polypropylene with low density and high heat, corrosion resistance is becoming increasingly more attractive for the building materials sector. However, the use of polypropylene alone has some disadvantages in terms of reducing the mechanical strength of the building material. Polypropylene composites are preferred in order to eliminate this disadvantage in polypropylene construction materials applications. In this study, the thermal conductivity, electrical resistance, 3, 7, 28-day compressive strength, 28-day tensile strength and water absorption ratio of concrete containing CaCO3-reinforced polypropylene were determined as quality criteria. In the experiments, 0%, 10%, 20%, 30% and 40% of CaCO3 reinforced polypropylene was used instead of fine aggregate. The reinforced concrete properties of filled CaCO3/PP have a 28 day compressive strength of 34.5% lower than that of the control concrete, 24.7% lower thermal conductivity and 50.7% higher electrical resistance.

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Influence of steel and/or polypropylene fibres on the behaviour of concrete at high temperature: Spalling, transfer and mechanical properties

Cited by 201 publications

References 20 publications

Transient Thermal Effect of FRC Incorporated PECC under High Temperature

Transient Thermal Effect of FRC Incorporated PECC under High Temperature

Increase of fire resistance of reinforced concrete structures with polypropylene microfiber

Examination of the effects of CaCO3 reinforced and unreinforced polypropylenes which is substituted with a fine aggregate on traditional concrete properties

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