Effect of high temperature or fire on heavy weight concrete properties

Sakr, K.; El-Hakim, Elham H.

doi:10.1016/j.cemconres.2004.05.023

Cited by 195 publications

(106 citation statements)

References 3 publications

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“…The mechanical properties such as strength, modulus of elasticity, and volume stability of concrete are considerably reduced during these exposures. This may result in undesirable structural failures [4][5][6][7][8][9][10][11]. Therefore, retained properties of concrete after a fire are …”

Section: Introductionmentioning

confidence: 99%

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Retained properties of concrete exposed to high temperatures: Size effect

Arıöz

2009

Fire and Materials

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SUMMARYConcrete as a construction material is likely exposed to high temperatures during fire. The retained properties of concrete after such exposures are still of great importance in terms of the serviceability of structures. This paper presents the effects of high temperatures on the physical, mechanical, and microstructural properties of concrete. Specimens with different sizes were exposed to high temperatures ranging from 200 to 1200 • C. The compressive strength, splitting tensile strength, ultrasonic pulse velocity, and rebound numbers of the specimens were determined. The microstructures of the specimens were examined by scanning electron microscope (SEM) analyses. The test results indicated that the retained compressive strength of concrete considerably decreased with increase in temperature. The effect of specimen size on the retained compressive strength was not pronounced. The retained splitting tensile strength of concrete remarkably reduced as the temperature was increased. The specimen size played an important role on the retained splitting tensile strength of concrete up to 400 • C. The test results revealed that ultrasonic pulse velocity (UPV) test can be successfully used in order to check the uniformity of fire-damaged structures. The rebound numbers decreased with increase in exposure temperature. SEM studies on specimens exposed to 800 • C revealed significant changes in the microstructure of the concrete.

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Section: Introductionmentioning

confidence: 99%

“…Concrete, which is one of the most widely used construction materials, is possibly exposed to high temperatures during fire [1][2][3][4][5][6][7]. The mechanical properties such as strength, modulus of elasticity, and volume stability of concrete are considerably reduced during these exposures.…”

Section: Introductionmentioning

confidence: 99%

Retained properties of concrete exposed to high temperatures: Size effect

Arıöz

2009

Fire and Materials

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“…The addition of this mineral in small quantities can enhance the concrete behavior against the radiation waves compared to the conventional concrete mixes [8,9]. Some researches results showed that addition of barite mineral can not enhance the mechanical properties of the ordinary concrete [10,11].…”

Section: Introductionmentioning

confidence: 99%

Effects of Barite Sand Addition on Glass Fiber Reinforced Concrete Mechanical Behavior

Yıldızel¹

2017

International Journal of Engineering &Amp; Applied Sciences

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“…However, prediction of the spalling represents complex task for further evaluation. A spalling is usually sorted into following categories: aggregate spalling, explosive spalling, surface spalling and corner spalling [5][6]. The first three types of spalling occur during first 20-30 minutes of fire exposure.…”

Section: Introductionmentioning

confidence: 99%

“…In the study of Hertz [8], free water content, moisture gradient and its influence in case of elevated temperature exposal was examined and found as a reason of spalling. Studies [2,5] focused on an estimation of the critical amount of water in concrete concluded that moisture about less than 3 mass% will not cause spalling. The range of 3-4 mass% of free water generates risk of explosive spalling in dependence on the concrete microstructure [4].…”

Section: Introductionmentioning

confidence: 99%

High Temperature Exposure of HPC – Experimental Analysis of Residual Properties and Thermal Response

et al. 2016

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Abstract. The effect of high temperature exposure on properties of a newly designed High Performance Concrete (HPC) is studied in the paper. The HPC samples are exposed to the temperatures of 200, 400, 600, 800, and 1000°C respectively. Among the basic physical properties, bulk density, matrix density and total open porosity are measured. The mechanical resistivity against disruptive temperature action is characterised by compressive strength, flexural strength and dynamic modulus of elasticity. To study the chemical and physical processes in HPC during its hightemperature exposure, Simultaneous Thermal Analysis (STA) is performed. Linear thermal expansion coefficient is determined as function of temperature using thermodilatometry (TDA). In order to describe the changes in microstructure of HPC induced by high temperature loading, MIP measurement of pore size distribution is done. Increase of the total open porosity and connected decrease of the mechanical parameters for temperatures higher than 200 °C were identified.

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Effect of high temperature or fire on heavy weight concrete properties

Cited by 195 publications

References 3 publications

Retained properties of concrete exposed to high temperatures: Size effect

Retained properties of concrete exposed to high temperatures: Size effect

Effects of Barite Sand Addition on Glass Fiber Reinforced Concrete Mechanical Behavior

High Temperature Exposure of HPC – Experimental Analysis of Residual Properties and Thermal Response

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