Experimental study on ultra-high performance concrete with high fire resistance under simultaneous effect of elevated temperature and impact loading

Liang, Xiangwei; Wu, Chengqing; Yang, Yekai; Li, Zhongxian

doi:10.1016/j.cemconcomp.2019.01.017

Cited by 88 publications

(16 citation statements)

References 30 publications

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“…The analyzing is based on investigation in paper. 17 As can be seen in Table 1, there are two inputs and two outputs. These inputs are temperature, static strength, gas pressure, and projectile velocity.…”

Section: Methodsmentioning

confidence: 99%

Retracted: Parameters ranking based on influence on dynamical strength of ultra‐high performance concrete by neuro fuzzy logic

2019

Structural Concrete

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The main goal of the study was to investigate the most influential parameters for dynamic strength and modulus of elasticity of ultra-high performance concrete. For such an investigation, different parameters were analyzed. Temperature, static strength gas pressure, and projectile velocity were considered in the study. Temperature was used since the fire is a big risk to buildings and structures and therefore there is great treat to human lives. Different temperature ranges were investigated in order to analyze dynamic responses of the ultrahigh performance concrete. Based on experimental procedure input and output data pairs were collected. Adaptive neuro fuzzy inference system or ANFIS was implemented in order to establish relationships between the input and output parameters. Based on ANFIS prediction errors one can determine which input parameter has the most impact on the analyzed output. It was found that the combination of temperature and projectile velocity has the strongest relation to the dynamic strength and modulus of elasticity of the concrete structure.

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Section: Methodsmentioning

confidence: 99%

Retracted: Parameters ranking based on influence on dynamical strength of ultra‐high performance concrete by neuro fuzzy logic

2019

Structural Concrete

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“…e XRD patterns of ITP are presented in Figure 1(b). e silica fume had moisture of 0.58% and a density of 2.21 g/cm 3 .…”

Section: Methodsmentioning

confidence: 99%

“…Concrete can endure high temperatures owing to its high specific heat and low thermal conductivity [1], which, however, does not imply that its performance is not degraded at all. Its compact microstructure is susceptible to explosive spalling due to the build-up of thermal stress at approximately 100°C of the release of vapor [2,3]. Moreover, the internal physical/chemical changes of concrete at high temperatures affect its mechanical strength [3,4].…”

Section: Introductionmentioning

confidence: 99%

“…Its compact microstructure is susceptible to explosive spalling due to the build-up of thermal stress at approximately 100°C of the release of vapor [2,3]. Moreover, the internal physical/chemical changes of concrete at high temperatures affect its mechanical strength [3,4]. It has been reported that the residual strength of concrete could significantly reduce when subjected to elevated temperatures [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Role of Iron Tailing Powder in Ultra‐High‐Strength Concrete Subjected to Elevated Temperatures

Huang

Zhang

et al. 2021

Advances in Civil Engineering

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Iron tailing powder (ITP) is considered to have the potential to replace cement to manufacture ultra-high-performance concrete (UHPC). However, the performance of UHPC with the addition of ITP after exposure to high temperatures is more complex. This investigation prepares seven UHPC formulations by introducing different contents of ITP and investigates the mechanical behavior (residual strength), bound water content, and microstructural properties (crystalline and amorphous phases, chemical structure, and morphology) of UHPC subjected to elevated temperatures. The experimental results show that the addition of ITP postpones the spalling of concrete when exposed to high temperatures. The concrete incorporating 15% ITP maintains 53.8% of its original strength at 800°C, unlike the concrete without ITP that maintains 31.6% of its original strength. The addition of ITP increases the number of micropores/cracks in concrete and helps release the vapor pressure caused by water evaporation. The findings of this investigation highlight the potential application of ITP for future UHPC design and manufacture.

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“…Concrete is one of the most widely used building materials, but it is vulnerable to explosive spalling at elevated temperatures caused by fire, explosion or furnaces nearby [1,2,3,4,5,6,7]. The residual mechanical properties significantly reduce after exposure [8,9,10,11,12,13]. Building fire accidents all over the globe have drawn attention to understanding residual performance at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

A DIC-Based Study on Compressive Responses of Concrete after Exposure to Elevated Temperatures

et al. 2019

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This paper provides an experimental investigation on the cracking process and residual mechanical properties of concrete after exposure to elevated temperatures. A total of 36 standard concrete prism specimens were tested after exposure to high temperatures of up to 600 °C. The failure modes, cracking process, residual mechanical properties, deformation characteristics and the strain distribution on the surface during the loading procedure were presented. The influences of exposure temperature and water–cement ratio (w/c) were interpreted. The digital image correlation (DIC) method was applied to quantitatively and visually characterize the development of cracking and relative displacement on the concrete surface. The findings suggest that the residual compressive strength and elastic modulus of the concrete decreases gradually with the increasing temperature, especially in the specimens with lower w/c ratio. The DIC technique provides an effective means to measure very precise and detailed information, including the crack opening and distribution of strain on the concrete surface.

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Experimental study on ultra-high performance concrete with high fire resistance under simultaneous effect of elevated temperature and impact loading

Cited by 88 publications

References 30 publications

Retracted: Parameters ranking based on influence on dynamical strength of ultra‐high performance concrete by neuro fuzzy logic

Retracted: Parameters ranking based on influence on dynamical strength of ultra‐high performance concrete by neuro fuzzy logic

The Role of Iron Tailing Powder in Ultra‐High‐Strength Concrete Subjected to Elevated Temperatures

A DIC-Based Study on Compressive Responses of Concrete after Exposure to Elevated Temperatures

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