Journal ArticleDOI
The use of thermal analysis in assessing the effect of temperature on a cement paste
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TLDR
In this article, the effect of temperature in the mineralogical composition of cement hydration products has been studied using thermogravimetric analysis (TGA) and DTG curves, which can be used to determine fire conditions and the consequent deterioration expected in the cement paste.About:
This article is published in Cement and Concrete Research.The article was published on 2005-03-01. It has received 709 citations till now. The article focuses on the topics: Cement & Portlandite.read more
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Microstructural study of concrete performance after exposure to elevated temperatures via considering C–S–H nanostructure changes
TL;DR: In this article , the microstructural performance of concrete exposed to high temperatures with a special focus on C-S-H nanostructure was investigated, and 300 samples were cured for 1, 3, 7, 14, and 28 days in a moist room and then exposed to temperature range of 25-900°C for 2'h.
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Investigating the Properties of Fireproofing Materials for an Advanced Design of Equipment Protection
R. Moricone,Alessandro Tugnoli +1 more
TL;DR: The changes in the physical properties of materials during fire exposure were confirmed to play a major role on the protection performance, paving the way for a safer and more cost effective design of passive fire protection systems.
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Reactivation of hydrated cement powder by thermal treatment for partial replacement of ordinary portland cement
Gustave Semugaza,Tommy Mielke,M. Escobar Castillo,Anne Zora Gierth,Joo Xian Tam,Stefan Nawrath,Doru C. Lupascu +6 more
TL;DR: In this paper , the authors show that the reactivation of hydrated cement powder (HCP) can be successful at a much lower temperature than the conventional Portland Cement (OPC) production.
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Experimental study on strength characteristics and internal mineral changes of Lime-stabilized loess under High-Temperature
TL;DR: In this article , the compressive and shear strength of lime-stabilized loess with five lime contents (0 %, 3.5 %, 7 %, 10.5 percent, and 14 %) were tested for 48 hours in a series of laboratory experiments to investigate the mechanical strength characteristics and internal mineral changes.
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Development and design of composite cementitious material at long-time circular elevated temperature in metallurgy environment
TL;DR: In this paper, a new approach conducted the development and design of materials from the problems, requirements and methods in engineering was analyzed carefully and verified by a two years trial in actual engineering.
References
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Compressive strength of concrete at high temperatures: a reassessment
TL;DR: In this paper, a reassessment of the subject is given, which considers material and environmental factors/mechanisms influencing the strength of concrete during the heat cycle and after cooling, not all of which necessarily result in strength loss.
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Thermal stability and decomposition mechanisms of ettringite at <120°C
Q. Zhou,Fredrik P. Glasser +1 more
TL;DR: In this article, the decomposition and reformation of ettringite is studied as a function of water vapour pressure and temperature, and the authors make recommendations for the upper safe service limits for ETTringite-based cements.
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Physicochemical, mineralogical, and morphological characteristics of concrete exposed to elevated temperatures
TL;DR: In this paper, the effect of elevated temperatures on the mineralogical changes occurring in the hydrated phases of concrete cubes were studied by measuring ultrasonic pulse velocity (UPV) and consequent deterioration in the compressive strength with increase in temperature.
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Differential scanning calorimetry study of ordinary Portland cement
Wei Sha,E.A. O’Neill,Z. Guo +2 more
TL;DR: In this article, the thermal behavior of hydration products in ordinary Portland cement as a function of age was investigated using differential scanning calorimeter (DSC) and X-ray diffraction analysis.
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Elastic properties of high alumina cement castables from room temperature to 1600°C
TL;DR: In this article, high-alumina refractory castables with compositions in the systems CaO-Al2O3 and CaO−Al 2O3-SiO2 were studied using an ultrasonic technique.