Results 21 to 30 of about 805,927 (209)
Open Ceramics, 2023 The mechanism of growth and decomposition of calcium aluminate cement hydrate phases (CAH phases), which determine the drying behaviour of calcium aluminate bonded castables are not well understood.
B. Noll, T. Stein, O. Krause, R. Simmat
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The effect of alginates on the hydration of calcium aluminate cement
Carbohydrate Polymers, 2020 The hydration of calcium aluminate cement (CAC) in the presence of sodium alginate which is known to slightly retard Portland cement, was studied using heat flow calorimetry and mortar strength testing. Most surprisingly, addition of alginate resulted in an earlier occurrence of the maximal heat release as well as an increased early strength, thus ...
Alexander Engbert +2 more
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Environmental Impact and Sustainability of Calcium Aluminate Cements [PDF]
Sustainability, 2022 This investigation presents a critical analysis of calcium aluminate cements (CAC), specifically associated with sustainability and environmental impact, and the potential of these cements to help solve certain worldwide problems. Areas of research include cements as recycling holding materials, sustainability, circular economy, production costs, and ...
John Zapata +4 more
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Preparation, physical-chemical characterisation and cytocompatibility of calcium carbonate cements [PDF]
, 2006 The feasibility of calcium carbonate cements involving the recrystallisation of metastable calcium carbonate varieties has been demonstrated. Calcium carbonate cement compositions presented in this paper can be prepared straightforwardly by simply mixing
Bareille, Reine +3 more
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Journal of Sustainable Construction Materials and Technologies, 2023 The cement production process contributes significantly to CO2 gas emissions and environ- mental pollution. To reduce this adverse effect, the substitution of waste marble powder as a cement additive was investigated.
Rumeysa Gürgöze +2 more
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Another look at the deterioration of calcium aluminate cement concrete
Materiales de Construccion, 1996 Potential degradation of concrete structures made of calcium aluminate cement (CAC) is well known and is caused by transformation (conversion) of the thermodynamically metastable into stable calcium aluminate hydrate phases.
Jaromir Jambor, Jan Skalny
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From Molten Calcium Aluminates through Phase Transitions to Cement Phases
Advanced Science, 2020 Crystalline calcium aluminates are a critical setting agent in cement. To date, few have explored the microscopic and dynamic mechanism of the transitions from molten aluminate liquids, through the supercooled state to glassy and crystalline phases ...
Hao Liu +12 more
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Changes in the rate of ion penetration of alternative cementitious materials with time
Materials & Design, 2021 A major concern with concrete durability is the penetration of ions that cause deterioration. One concern about alternative cementitious materials (ACMs) is the lack of information regarding their long-term resistance to ion penetration.
Amir Behravan +3 more
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Co-grinding significance for calcium carbonate–calcium phosphate mixed cement. Part I: effect of particle size and mixing on solid phase reactivity [PDF]
, 2011 In part I of this study we aim to evaluate and control the characteristics of the powders constituting the solid phase of a vaterite CaCO3–dicalcium phosphate dihydrate cement using a co-grinding process and to determine their impact on cement setting ...
Combes, Christèle +7 more
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Early-age behavior of calcium aluminate cement systems [PDF]
, 2008 textCompared to the knowledge base for ordinary portland cement concrete (OPCC), relatively little information exists for calcium aluminate cement concrete (CACC), despite its existence for over 100 years.
Ideker, Jason H.
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