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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The effect of sodium citrate on NaOH-activated BFS cement: Hydration, mechanical property, and micro/nanostructure
TL;DR: In this article , the effect of sodium citrate solution on the hydration process and microstructure evolution of NaOH-activated blast furnace slag (BFS) paste was investigated.
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Development of High-Performance Fiber Cement: A Case Study in the Integration of Circular Economy in Product Design
TL;DR: In this article , a new fiber cement (FC) is designed with the integration of circular economy (CE) concepts, in particular a product that is recyclable yet maintains performance.
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Preparation, characterization and hydration-retarding mechanism of a new type of highly alkali-resistant superabsorbent polymer for sustainable concrete structures
TL;DR: In this paper , an eco-friendly superabsorbent polymer (SAPN) with high alkali-absorption for cement-based materials was synthesized through graft copolymerization of organic monomers onto xanthan gum and metakaolin.
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Mechanical and Microstructural Properties of Cemented Paste Backfill with Chloride-Free Antifreeze Additives in Subzero Environments
TL;DR: In this paper , the authors examined the mechanical and microstructural properties of CPB with chloride-free antifreeze additives in subzero conditions and found that the addition of antifreze weakened the mechanical properties of the CPB.
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Aquaphotomic Study of Effects of Different Mixing Waters on the Properties of Cement Mortar
Jelena Muncan,Satoshi Tamura,Yurie Nakamura,Mizuki Takigawa,Hisao Tsunokake,Roumiana Tsenkova +5 more
TL;DR: In this article , the authors investigated the effect of four different types of water (two spring-, mineral waters, tap water and distilled water) on the drying shrinkage of the hardened cement by comparing the material properties of the concrete specimens and analyzing the molecular structure of the water and cement mortar using aquaphotomics.
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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.