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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Behaviour of concrete structures in fire
TL;DR: A review of the state-of-the-art work on the effects of high temperature on concrete and concrete structures, extending to a range of forms of construction, including novel developments, can be found in this paper.
Journal ArticleDOI
Synthesis and nano-mechanical characterization of calcium-silicate-hydrate (C-S-H) made with 1.5 CaO/SiO2 mixture
TL;DR: In this paper, a mixture of 1.5 and enough deionized water was continuously mixed for 7 days, then the excess water was removed and two methods of drying were implemented: one method used the standard d-dry technique and the other was equilibrated to 11% relative humidity.
Journal ArticleDOI
Energy and CO2 from high performance recycled aggregate production
TL;DR: In this paper, the authors present an analysis of the environmental impacts of the recent mechanical and thermo-mechanical processing techniques which produce high performance RCA by reducing the volume of adhered cement paste.
Journal ArticleDOI
Effect of limestone fillers on microstructure and permeability due to carbonation of cement pastes under controlled CO2 pressure conditions
Quoc Tri Phung,Norbert Maes,Diederik Jacques,Els Bruneel,Isabel Van Driessche,Guang Ye,Guang Ye,Geert De Schutter +7 more
TL;DR: In this article, a new experimental method was developed to carbonate cement-based materials by applying an elevated pressure gradient of pure CO 2 to the specimens at 65% relative humidity (RH).
References
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Journal ArticleDOI
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.
Journal ArticleDOI
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.
Journal ArticleDOI
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.