The Experts below are selected from a list of 36 Experts worldwide ranked by ideXlab platform
Garrault S. - One of the best experts on this subject based on the ideXlab platform.
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Hydration of triCalcium aluminate in the presence of various amounts of Calcium Sulphite Hemihydrate : Conductivity tests.
Cement and Concrete Research, 2015Co-Authors: Lagosz A., Malolepszy J., Garrault S.Abstract:Hydration of Calcium aluminate C3A (3CaO·Al2O3) in the presence of Calcium Sulphite Hemihydrate (CaSO3·0.5H2O), with the molar ratio of substrates close to 1, produces the C3A·CaSO3·11H2O Calcium monoSulphite aluminate phase. Small amounts of Calcium Sulphite added to Calcium aluminate (the ratio of CaSO3·0.5H2O/C3A equalling 0 : 1) change the rate of C3A hydration and influence the whole reaction. Reaction processes for various ratios of the C3A–CaSO3·0.5H2O mixture were examined in pure distilled water with a considerable amount of liquid W/ S=38–50 (constant W/C3A). Processes in the liquid phase were monitored with conductivity equipment, and the XRD analysis was used to identify the phases precipitated during the examined reactions.
J Malolepszy - One of the best experts on this subject based on the ideXlab platform.
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triCalcium aluminate hydration in the presence of different amounts of Calcium Sulphite Hemihydrate
FPSRS: French-Polish Seminar on Reactivity of Solids, 2003Co-Authors: A Lagosz, J MalolepszyAbstract:La phase aluminate monosulfite d'aluminium C 3 A-CaSO 3 -11H 2 O est le produit principal de l'hydratation de l'aluminate tricalcique C3A (3CaO.Al 2 O 3 ) en presence de sulfite de Calcium Hemihydrate (CaSO 3 .0.5H 2 O), pour un rapport molaire de reactifs voisin de 1. L'addition d'une faible quantite de sulfite de Calcium ne change pas seulement la vitesse de reaction du C 3 A mais modifie les etapes reactionnelles apres la consommation du sulfite de Calcium. La reaction du C3A en presence d'un exces de sulfite de Calcium resulte des le debut de la reaction en la formation de la phase monosulfite d'aluminium. Le melange des phases famees durant la reaction et l'exces de sulfite de Calcium reste probablement stable meme apres plusieurs jours d'hydratation- Mais, quand la meme reaction est realisee dans une solution d'hydroxyde de Calcium, la stabilite des produits de reactions est modifiee. La phase monosulfite d'aluminium et l'exces de sulfite de Calcium disparaissent pour des echeances superieures a 7 jours. Une phase dont la composition est proche de l'ettringite (mais de structure differente) apparait. L'etude de l'hydratation du C 3 A, et plus particulierement des processus reactionnels intervenant dans la phase liquide ont ete realisees a partir de mesures conductimetriques.
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hydration of an alite triCalcium aluminate mixture in the presence of Calcium Sulphite Hemihydrate
Silicates Industriels, 2002Co-Authors: A Lagosz, J MalolepszyAbstract:The influence of Calcium Sulphite Hemihydrate (CaSO 3 .0.5H 2 O) on hydration kinetics of cements have been studied by the use of several complimentary methods. Due to the complexity of direct studies of cement, resulting from the polymineral composition of cement clinkers, the experiments have been performed on the proper mixtures of alite and triCalcium aluminate. The studies of types and quantity of reaction products being formed, as well as the kinetics of hydration along with chemical composition development of the liquid phase, made it possible to describe, to some extent, a function of Calcium Sulphite in the hydration of cement and, indirectly, its influence on cement properties such as water demand, setting time, and strength development of cement mortars.
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Hydration of an alite/triCalcium aluminate mixture in the presence of Calcium Sulphite Hemihydrate
Silicates Industriels, 2002Co-Authors: A Lagosz, J MalolepszyAbstract:The influence of Calcium Sulphite Hemihydrate (CaSO 3 .0.5H 2 O) on hydration kinetics of cements have been studied by the use of several complimentary methods. Due to the complexity of direct studies of cement, resulting from the polymineral composition of cement clinkers, the experiments have been performed on the proper mixtures of alite and triCalcium aluminate. The studies of types and quantity of reaction products being formed, as well as the kinetics of hydration along with chemical composition development of the liquid phase, made it possible to describe, to some extent, a function of Calcium Sulphite in the hydration of cement and, indirectly, its influence on cement properties such as water demand, setting time, and strength development of cement mortars.
Lagosz A. - One of the best experts on this subject based on the ideXlab platform.
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Hydration of triCalcium aluminate in the presence of various amounts of Calcium Sulphite Hemihydrate : Conductivity tests.
Cement and Concrete Research, 2015Co-Authors: Lagosz A., Malolepszy J., Garrault S.Abstract:Hydration of Calcium aluminate C3A (3CaO·Al2O3) in the presence of Calcium Sulphite Hemihydrate (CaSO3·0.5H2O), with the molar ratio of substrates close to 1, produces the C3A·CaSO3·11H2O Calcium monoSulphite aluminate phase. Small amounts of Calcium Sulphite added to Calcium aluminate (the ratio of CaSO3·0.5H2O/C3A equalling 0 : 1) change the rate of C3A hydration and influence the whole reaction. Reaction processes for various ratios of the C3A–CaSO3·0.5H2O mixture were examined in pure distilled water with a considerable amount of liquid W/ S=38–50 (constant W/C3A). Processes in the liquid phase were monitored with conductivity equipment, and the XRD analysis was used to identify the phases precipitated during the examined reactions.
A Lagosz - One of the best experts on this subject based on the ideXlab platform.
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triCalcium aluminate hydration in the presence of different amounts of Calcium Sulphite Hemihydrate
FPSRS: French-Polish Seminar on Reactivity of Solids, 2003Co-Authors: A Lagosz, J MalolepszyAbstract:La phase aluminate monosulfite d'aluminium C 3 A-CaSO 3 -11H 2 O est le produit principal de l'hydratation de l'aluminate tricalcique C3A (3CaO.Al 2 O 3 ) en presence de sulfite de Calcium Hemihydrate (CaSO 3 .0.5H 2 O), pour un rapport molaire de reactifs voisin de 1. L'addition d'une faible quantite de sulfite de Calcium ne change pas seulement la vitesse de reaction du C 3 A mais modifie les etapes reactionnelles apres la consommation du sulfite de Calcium. La reaction du C3A en presence d'un exces de sulfite de Calcium resulte des le debut de la reaction en la formation de la phase monosulfite d'aluminium. Le melange des phases famees durant la reaction et l'exces de sulfite de Calcium reste probablement stable meme apres plusieurs jours d'hydratation- Mais, quand la meme reaction est realisee dans une solution d'hydroxyde de Calcium, la stabilite des produits de reactions est modifiee. La phase monosulfite d'aluminium et l'exces de sulfite de Calcium disparaissent pour des echeances superieures a 7 jours. Une phase dont la composition est proche de l'ettringite (mais de structure differente) apparait. L'etude de l'hydratation du C 3 A, et plus particulierement des processus reactionnels intervenant dans la phase liquide ont ete realisees a partir de mesures conductimetriques.
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hydration of an alite triCalcium aluminate mixture in the presence of Calcium Sulphite Hemihydrate
Silicates Industriels, 2002Co-Authors: A Lagosz, J MalolepszyAbstract:The influence of Calcium Sulphite Hemihydrate (CaSO 3 .0.5H 2 O) on hydration kinetics of cements have been studied by the use of several complimentary methods. Due to the complexity of direct studies of cement, resulting from the polymineral composition of cement clinkers, the experiments have been performed on the proper mixtures of alite and triCalcium aluminate. The studies of types and quantity of reaction products being formed, as well as the kinetics of hydration along with chemical composition development of the liquid phase, made it possible to describe, to some extent, a function of Calcium Sulphite in the hydration of cement and, indirectly, its influence on cement properties such as water demand, setting time, and strength development of cement mortars.
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Hydration of an alite/triCalcium aluminate mixture in the presence of Calcium Sulphite Hemihydrate
Silicates Industriels, 2002Co-Authors: A Lagosz, J MalolepszyAbstract:The influence of Calcium Sulphite Hemihydrate (CaSO 3 .0.5H 2 O) on hydration kinetics of cements have been studied by the use of several complimentary methods. Due to the complexity of direct studies of cement, resulting from the polymineral composition of cement clinkers, the experiments have been performed on the proper mixtures of alite and triCalcium aluminate. The studies of types and quantity of reaction products being formed, as well as the kinetics of hydration along with chemical composition development of the liquid phase, made it possible to describe, to some extent, a function of Calcium Sulphite in the hydration of cement and, indirectly, its influence on cement properties such as water demand, setting time, and strength development of cement mortars.
Malolepszy J. - One of the best experts on this subject based on the ideXlab platform.
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Hydration of triCalcium aluminate in the presence of various amounts of Calcium Sulphite Hemihydrate : Conductivity tests.
Cement and Concrete Research, 2015Co-Authors: Lagosz A., Malolepszy J., Garrault S.Abstract:Hydration of Calcium aluminate C3A (3CaO·Al2O3) in the presence of Calcium Sulphite Hemihydrate (CaSO3·0.5H2O), with the molar ratio of substrates close to 1, produces the C3A·CaSO3·11H2O Calcium monoSulphite aluminate phase. Small amounts of Calcium Sulphite added to Calcium aluminate (the ratio of CaSO3·0.5H2O/C3A equalling 0 : 1) change the rate of C3A hydration and influence the whole reaction. Reaction processes for various ratios of the C3A–CaSO3·0.5H2O mixture were examined in pure distilled water with a considerable amount of liquid W/ S=38–50 (constant W/C3A). Processes in the liquid phase were monitored with conductivity equipment, and the XRD analysis was used to identify the phases precipitated during the examined reactions.
