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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Characterization of Ceramic‐Based Construction and Demolition Waste: Use as Pozzolan in Cements
TL;DR: In this paper, the effect of the ceramic-based material content on the chemical and mineralogical composition, morphology, and pozzolanic activity of CB-C&DW was explored in a more exhaustive study of two types of waste, one with 20 and the other with 100% ceramic based material content.
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Effects of graphene oxide in enhancing the performance of concrete exposed to high-temperature
TL;DR: In this article, the effects of incorporation of graphene oxide (GO) in normal and high strength concrete at high temperatures were experimentally investigated, and the results showed significant improvement of mechanical strength of the specimens with GO; the residual compressive strength was about 70% compared to 35% for the reference specimens.
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High strength fiber reinforced one-part alkali activated slag/fly ash binders with ceramic aggregates: Microscopic analysis, mechanical properties, drying shrinkage, and freeze-thaw resistance
TL;DR: In this paper, the effects on the fresh and hardened-state properties of one-part alkali-activated mortars of replacing up to 80% of slag with fly ash were characterized by the initial and final setting time, the strength development, and the drying shrinkage.
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Thermal resistance of hardened cement pastes containing vermiculite and expanded vermiculite
TL;DR: The durability and thermal stability of hardened Portland cement pastes containing vermiculite (V) and expanded vermiculus (EV) exposed to high temperatures were studied in this article.
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Benefits of synthetic fibers on the residual mechanical performance of UHPFRC after exposure to ISO standard fire
TL;DR: In this paper, the effects of synthetic fiber type, replacing ratio of steel and polyethylene (PE) fibers, and hybrid use of polypropylene (PP) and nylon (Ny) fibers on the mechanical properties of ultra-high-performance fiber-reinforced concrete (UHPFRC) before and after exposure to an ISO 834 fire were investigated.
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.