Physicochemical, mineralogical, and morphological characteristics of concrete exposed to elevated temperatures

Handoo, S.K.; Agarwal, S. K.

doi:10.1016/s0008-8846(01)00736-0

Cited by 294 publications

(138 citation statements)

References 2 publications

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“…the reduction in compressive strength of concrete [6,9,11,17,[19][20][21]. The retained compressive strength values of the concrete specimens after exposure to high temperatures are presented in Figure 3.…”

Section: Compressive Strength Test Resultsmentioning

confidence: 99%

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: Compressive Strength Test Resultsmentioning

confidence: 99%

Retained properties of concrete exposed to high temperatures: Size effect

Arıöz

2009

Fire and Materials

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“…9 and 10. From the DSC curves, it is apparent that there main peaks exist in the vicinity of 105°C, 450°C and 800°C for all the samples, which can be attributed to the evaporation of free water, decomposition of Ca(OH) 2 and decomposition of CaCO 3 , respectively [68][69][70][71][72]. Based on the test results shown in Figs.…”

Section: Thermal Analysis Of the Hardened Uhpcmentioning

confidence: 92%

Development of an eco-friendly Ultra-High Performance Concrete (UHPC) with efficient cement and mineral admixtures uses

Spiesz

Brouwers

2015

Cement and Concrete Composites

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“…Handoo et al [12] found by employing a scanning electron microscopy analysis that the morphological changes of the C-S-H gel take place mainly at a temperature higher than 600°C. Alonso and Fernandes [11] concluded that the C-S-H gel starts to dehydrate slightly as early as 100-200°C, dehydrating gradually with the increase of temperature.…”

Section: The Effects Of Thermal Treatment On Recycled Concrete Particlesmentioning

confidence: 99%