Steel fibre reinforced concrete at elevated temperatures

Purkiss, J. A.

doi:10.1016/0262-5075(84)90006-x

Cited by 45 publications

(9 citation statements)

References 2 publications

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“…Above 800°C, in the case of carbonate aggregate mix the mass loss in steel fibre-reinforced HSC is slightly lower than that of plain HSC. This can be attributed to the higher density of steel fibres (Purkiss 1984). Overall, the mass loss of the concrete in the temperature range of 0°C to 1000°C is not significantly affected by the presence of steel fibre-reinforcement.…”

Section: Resultsmentioning

confidence: 85%

Effect of Temperature on Thermal Properties of High-Strength Concrete

Kodur

Sultan

2003

J. Mater. Civ. Eng.

237

116

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1061/(ASCE) 0899-1561(2003)15:2(101) Journal of Materials in Civil Engineering, 15, 2, pp. 101-107, 2003-03-01 Effect of temperature on thermal properties of high-strength concrete Kodur, V. K. R.; Sultan, M. A. The effect of temperature on thermal conductivity, thermal expansion, specific heat and mass loss of HSC is discussed. Test data indicate that the type of aggregate has significant influence on the thermal properties of HSC, while the presence of steel fibrereinforcement has very little influence on the thermal properties of HSC.

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Section: Resultsmentioning

confidence: 85%

Effect of Temperature on Thermal Properties of High-Strength Concrete

Kodur

Sultan

2003

J. Mater. Civ. Eng.

237

116

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“…The flexural testing of SFRC has been performed on prisms, but the specimen sizes used previously varied because of the The initial saturation percentages of the sample and its temperature history, such as the heating rate and cooling regime, may be the main parameters used to determine the effect of steel fiber actions. After being exposed to heating at different high temperatures, the residual compressive strengths of concrete reinforced with 1% steel fiber of water curing with three different water saturation percentages (20%, 60%, and 100%) were investigated by Lau and Anson [31]. They discovered that increased saturation percentages reduced the strength of SFRC, regardless of the maximum heating temperature, which ranged from 105 to 1200 • C. This may be because SFRC with high saturation percentages in the heating process resulted in a greater pore pressure, and hence more internal defects.…”

Section: Residual Flexural Propertiesmentioning

confidence: 99%

“…Furthermore, many investigations have been conducted to examine the residual properties and explosive spalling behavior of SFRC [25][26][27]. When concrete is exposed to fires or high temperatures, the existence of steel fibers can reduce the water vapor pressure in the pores of concrete and bridge cracks inside concrete, as well as reduce the temperature gradient by allowing more heat into the concrete to decrease the possibility of explosive spalling and concrete cracking at high temperatures, which contribute positively to the fire resistance of concrete [28][29][30][31][32]. Meanwhile, the residual mechanical properties of concrete in a post-fire environment can be improved significantly [31][32][33].…”

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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“…Above 300 ∘ C, the tensile strength of NSC decreases at a rapid rate due to a more pronounced thermal damage in the form of microcracks and reaches to about 20% of its initial strength at 600 ∘ C. HSC experiences a rapid loss of tensile strength at higher temperatures due to development of pore pressure in dense microstructured HSC [55]. The addition of steel fibers to concrete enhances its tensile strength and the increase can be up to 50% higher at room temperature [67,68]. Further, the tensile strength of steel fiber-reinforced concrete decreases at a lower rate than that of plain concrete throughout the temperature range of 20-800 ∘ C [69].…”

Section: Tensile Strengthmentioning

confidence: 99%

Properties of Concrete at Elevated Temperatures

Kodur

2014

ISRN Civil Engineering

419

243

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Fire response of concrete structural members is dependent on the thermal, mechanical, and deformation properties of concrete. These properties vary significantly with temperature and also depend on the composition and characteristics of concrete batch mix as well as heating rate and other environmental conditions. In this chapter, the key characteristics of concrete are outlined. The various properties that influence fire resistance performance, together with the role of these properties on fire resistance, are discussed. The variation of thermal, mechanical, deformation, and spalling properties with temperature for different types of concrete are presented.

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Steel fibre reinforced concrete at elevated temperatures

Cited by 45 publications

References 2 publications

Effect of Temperature on Thermal Properties of High-Strength Concrete

Effect of Temperature on Thermal Properties of High-Strength Concrete

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

Properties of Concrete at Elevated Temperatures

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