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Thermal stability of crandallite CaAl3(PO4)2(OH)5·(H2O)

A ‘Cave’ mineral from the Jenolan Caves

Journal of Thermal Analysis and Calorimetry
Authors: Ray L. Frost, Sara J. Palmer, and Ross E. Pogson

the temperature to vary from 12.8 to 15.6 °C. The higher temperatures are only achieved near the cave entrances. The humidity within the caves is high and never goes below 75% relative humidity and the air is often saturated

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Journal of Thermal Analysis and Calorimetry
Authors: Robson Miranda da Gama, Tatiana Santana Balogh, Simone França, Tânia Cristina Sá Dias, Valcinir Bedin, André Rolim Baby, Jivaldo do Rosário Matos, and Maria Valéria Robles Velasco

30 s with 15.0% (w/v) sodium lauryl sulfate to remove impurities. All were wetted with warm (37.0 ± 5.0 °C) distilled water constant flow of 240.0 mL min −1 for 1 min and then dried at room temperature (22.0 ± 1.0 °C) and relative humidity (RH 60 ± 5

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Artificial pozzolanic cement pastes containing burnt clay with and without silica fume

Physicochemical, microstructural and thermal characteristics

Journal of Thermal Analysis and Calorimetry
Authors: M. S. Amin, S. A. Abo-El-Enein, A. Abdel Rahman, and Khaled A. Alfalous

using one inch cubic molds. The molds, containing the pastes, were cured at 100% relative humidity for 24 h to attain the final setting, and then, the cubic specimens were removed from the molds and cured under water at room temperature for different

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curing continuous at ambient (21 ± 1 °C and 54% of relative humidity) temperature for at least 28 days before characterization. Characterization of geopolymer materials Mineral phase content The

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and relative humidity (RH) of 90% for 24 h, the specimens were demolded and cured in lime-saturated water at 20 ± 1 °C, followed by the strength tests according to EN 196–1 [ 17 ]. Activity index of the fly ash used was calculated as the strength ratio

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environmental pollutants, relative humidity and the extreme variability of materials housed in collections. Corrosion develops under thin layers of adsorbed oxygen and water and only a few adsorbed molecular layers of moisture are required for corrosion to

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vapor adsorption onto poly (styrensulfonic acid), sodium salt has indicated that the adsorption capacity of the monosulfonated sample reached more than 80% mass under 80% relative humidity equilibrium and the heat of adsorption was about standard

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M 20 Universal mill and conditioned at water activity, a w of 0.50 (relative humidity, RH) and 296 K for 48 h before measurement. Data was smooth using Savitzky-Golay exponential filter that preserved features of the X-ray curves while removing

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(Siglufjordur, Iceland). Dough mixer “MONO” (Swansea, UK) was used to make dough at two stirring rates during 10 min. The dough was allowed to proof for 25–30 min at 38 °C and relative humidity 72% and cut to pieces with weight 65 g. The rolls were baked in

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Journal of Thermal Analysis and Calorimetry
Authors: Edilene P. Lavor, Fátima Duarte Freire, Cícero Flávio S. Aragão, Fernanda N. Raffin, and Túlio Flávio A. de Lima e Moura

–solid phase transitions upon heating [ 19 ]. Studies of interaction performed by Bhutan et al. [ 27 ] and Singh et al. [ 6 ] reported that the mixture between INH and ETA becomes liquid under accelerated conditions of temperature and relative humidity

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