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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Uniaxial tensile properties of multi-scale fiber reinforced rubberized concrete after exposure to elevated temperatures
TL;DR: In this article , the authors investigated the influence of the crumb rubber and multi-scale fibers on the failure mode, first cracking strength and strain, ultimate strength, and the stress-strain relationships of MSFRRC subjected to elevated temperatures (up to 800 °C).
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Effects of severe heating and rehydration on poro-mechanical properties of a mortar
TL;DR: In this paper, a normalized mortar was severely heated at different temperatures up to 600°C that led to a strong material degradation linked to its loss of water and to the Portlandite decomposition.
Ternary blends of Portland cement, bottom ash and silica fume: Compressive strength of mortars and phase characterizations
TL;DR: In this paper, bottom ash, a byproduct from coal power plant, was blended with Portland cement and silica fume to produce ternary blend mixes, and compressive strength of mortars and phase characterizations were investigated.
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Effect of hydrated lime on structures and properties of decorative rendering mortar
TL;DR: In this paper, the effects of hydrated lime on mechanical properties, microstructures and efflorescence behavior of decorative rendering mortar were investigated, and the results showed that the decorative rendering mixtures with required physical properties could be obtained when less than 50% of white cement was replaced by hydrated limes.
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10000 years cement – Can hydrated cement last as much as long-lived radionuclides?
TL;DR: In this paper, the authors focused on the long-term performance of cementitious materials in a repository for radioactive waste and identified three main causes of failure of concrete barriers: the formation of a preferential pathway for the migration of the contained radionuclides to the biosphere, the loss of resistance and cohesion of the structural cementitious material, and the increase in the corrosion processes of the metallic components of the structures that affect the overall containment of the facility.
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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.