On residual strength of high-performance concrete with and without polypropylene fibres at elevated temperatures

Xiao, Jianzhuang; Falkner, Horst

doi:10.1016/j.firesaf.2005.11.004

Cited by 250 publications

(108 citation statements)

References 10 publications

(11 reference statements)

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“…An assessment of the degree of deterioration of concrete structure after exposure to high temperatures can help engineers to decide whether a structure can be repaired rather than required to be demolished (Xiao and Falkner 2006). Horiguchi (2005) experimentally proved that the addition of polymeric or steel fibers alters the residual compressive strength of concrete.…”

Section: Temperature Effects On Concrete With and Without Fibersmentioning

confidence: 99%

A Study on Residual Compression Behavior of Structural Fiber Reinforced Concrete Exposed to Moderate Temperature Using Digital Image Correlation

Srikar

Anand

Prakash

2016

Int J Concr Struct Mater

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Fire ranks high among the potential risks faced by most buildings and structures. A full understanding of temperature effects on fiber reinforced concrete is still lacking. This investigation focuses on the study of the residual compressive strength, stress strain behavior and surface cracking of structural polypropylene fiber-reinforced concrete subjected to temperatures up to 300°C. A total of 48 cubes was cast with different fiber dosages and tested under compression after exposing to different temperatures. Concrete cubes with varying macro (structural) fiber dosages were exposed to different temperatures and tested to observe the stress-strain behavior. Digital image correlation, an advanced non-contacting method was used for measuring the strain. Trends in the relative residual strengths with respect to different fiber dosages indicate an improvement up to 15 % in the ultimate compressive strengths at all exposure temperatures. The stress-strain curves show an improvement in post peak behavior with increasing fiber dosage at all exposure temperatures considered in this study.

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Section: Temperature Effects On Concrete With and Without Fibersmentioning

confidence: 99%

A Study on Residual Compression Behavior of Structural Fiber Reinforced Concrete Exposed to Moderate Temperature Using Digital Image Correlation

Srikar

Anand

Prakash

2016

Int J Concr Struct Mater

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“…In reinforced concrete members, such changes are reflected by a reduction in the mechanical properties, increase in the permeability of concrete, and weakening of the bond strength between embedded steel and concrete [10][11][12]. Many studies have been carried out to investigate the effect of the elevated temperature on different concrete specimens [13][14][15]. It is noted that characteristics such as colour, compressive strength, elasticity, concrete density and surface appearance are affected by temperature [16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of elevated temperature on the compressive strength of concrete produced with pulverized steel mill scale

Oyelade¹,

Odegbaro²,

Fapohunda³

2018

Nig. J. Tech.

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Concrete materials in structures are usually exposed to high temperatures during fire. The relative properties of concrete after such an exposure are of great importance in terms of the serviceability of buildings. The effect of partial replacement of cement with pulverized steel mill scale (PSMS) on the compressive strength of concrete cubes was investigated in the first test. Furthermore, the influence of elevated temperatures on the compressive strength of the concrete cubes with cement partially replaced with PSMS was examined. For the second test the cubes were exposed to elevated temperatures ranging from the ambient temperature to 750°C in steps of 250°C for 2 hours and allowed to cool for 24 hours. Based on results of tests, partial replacement of cement with 10 % PSMS is recommended for use in concrete production and resistance to elevated temperature. The studies show that at this replacement, the concrete compressive strength is not adversely affected when the elevated temperature reaches 500°C.

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“…In high-performance concrete, fibres are often added to overcome the adverse effects of fire-induced spalling, as they melt or degrade at certain temperatures and form dehydration pathways for escaping water, preventing pore pressure build-up. However, the presence of porosity and small channels created by fibre melting or degrading may reduce the mechanical strength of the composites [33,34].…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of cotton fabric reinforced geopolymer composites at 200–1000 °C

et al. 2014

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Abstract:Geopolymer composites containing woven cotton fabric (0-8.3 wt%) were fabricated using the hand lay-up technique, and were exposed to elevated temperatures of 200 ℃, 400 ℃, 600 ℃, 800 ℃ and 1000 ℃. With an increase in temperature, the geopolymer composites exhibited a reduction in compressive strength, flexural strength and fracture toughness. When heated above 600 ℃, the composites exhibited a significant reduction in mechanical properties. They also exhibited brittle behavior due to severe degradation of cotton fibres and the creation of additional porosity in the composites. Microstructural images verified the existence of voids and small channels in the composites due to fibre degradation.

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On residual strength of high-performance concrete with and without polypropylene fibres at elevated temperatures

Cited by 250 publications

References 10 publications

A Study on Residual Compression Behavior of Structural Fiber Reinforced Concrete Exposed to Moderate Temperature Using Digital Image Correlation

A Study on Residual Compression Behavior of Structural Fiber Reinforced Concrete Exposed to Moderate Temperature Using Digital Image Correlation

Effect of elevated temperature on the compressive strength of concrete produced with pulverized steel mill scale

Mechanical properties of cotton fabric reinforced geopolymer composites at 200–1000 °C

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