A meso-level investigation into the explosive spalling mechanism of high-performance concrete under fire exposure

Zhao, Jie; Zheng, Jianjun; Peng, Gai Fei; Breugel, K. van

doi:10.1016/j.cemconres.2014.07.010

Cited by 65 publications

(30 citation statements)

References 33 publications

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“…The results showed that the induced stress is the primary factor causing thermal failure and spalling in concrete, while the pore pressure, at most, plays a secondary role. Zhao et al [69] calculated the temperature field, thermal decomposition of cement paste, vapor pressure, moisture transport, and distribution and evolution of thermal stresses in concrete through numerical simulations. It was concluded that the explosive spalling of HPC specimens under exposure to fire was mainly attributed to the temperature gradient-induced thermal stress.…”

Section: Introductionmentioning

confidence: 99%

On the thermal spalling mechanism of reactive powder concrete exposed to high temperature: Numerical and experimental studies

Liu

et al. 2016

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

On the thermal spalling mechanism of reactive powder concrete exposed to high temperature: Numerical and experimental studies

Liu

et al. 2016

International Journal of Heat and Mass Transfer

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“…Test specimens were afterwards preheated in laboratory oven at 110°C for 78 hours. By this, we remove residual free water content to prevent concrete from explosive spalling [6].…”

Section: Applied Materialsmentioning

confidence: 99%

Acoustic non-destructive testing of high temperature degraded concrete with comparison of acoustic impedance

2018

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The paper is focused on non-destructive measurement of high temperature degraded concrete test specimens of three mixtures different by the use of coarse aggregate. Testing is done by ultrasonicpulse velocitymethod and Impact-Echo method. Non-destructive results are compared with destructive tests. Ultrasonic pulse velocity, dominant resonance frequency and acoustic impedance are discussed and compared with changes in density, cubic compressive strength, and tensile strength of concrete. The paper suggests possible assessment of degraded concrete by the change in acoustic impedance dependent on residual tensile strength.

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“…It is clear that by turning to a mesoscale level, one can obtain more realistic results, especially when investigating the spalling phenomenon (see e.g. the recent works by Le [40], Zhao et al [59]). However, such approach is out of scope of the present paper.…”

Section: Materials Data For Concrete At High Temperaturesmentioning

confidence: 99%

Hygro-thermo-mechanical analysis of spalling in concrete walls at high temperatures as a moving boundary problem

Beneš

Štefan

2015

International Journal of Heat and Mass Transfer

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a b s t r a c tA mathematical model allowing coupled hygro-thermo-mechanical analysis of spalling in concrete walls at high temperatures by means of the moving boundary problem is presented. A simplified mechanical approach to account for effects of thermal stresses and pore pressure build-up on spalling is incorporated into the model. The numerical algorithm based on finite element discretization in space and the semiimplicit method for discretization in time is presented. The validity of the developed model is carefully examined by a comparison between the experimentally determined data stated in literature and the results obtained from the numerical simulation.

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A meso-level investigation into the explosive spalling mechanism of high-performance concrete under fire exposure

Cited by 65 publications

References 33 publications

On the thermal spalling mechanism of reactive powder concrete exposed to high temperature: Numerical and experimental studies

On the thermal spalling mechanism of reactive powder concrete exposed to high temperature: Numerical and experimental studies

Acoustic non-destructive testing of high temperature degraded concrete with comparison of acoustic impedance

Hygro-thermo-mechanical analysis of spalling in concrete walls at high temperatures as a moving boundary problem

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