Results 21 to 30 of about 14,517 (205)
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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A Scanning Transmission X-ray Microscopy Study of Cubic and Orthorhombic C₃A and Their Hydration Products in the Presence of Gypsum. [PDF]
, 2016 This paper shows the microstructural differences and phase characterization of pure phases and hydrated products of the cubic and orthorhombic (Na-doped) polymorphs of tricalcium aluminate (C₃A), which are commonly found in traditional Portland cements ...
Chae, Sejung Rosie +5 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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The effects of MgO, Na2O and SO3 on industrial clinkering process: phase composition, polymorphism, microstructure and hydration, using a multidisciplinary approach [PDF]
, 2019 Preprint publicado en: Materials Characterization Volume 155, September 2019, 109809The present investigation deals with how minor elements (their oxides: MgO, Na2O and SO3) in industrial kiln feeds affect (i) chemical reactions upon clinkering, (ii ...
Alessandro, Pavese +6 more
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Supercritical carbonation of calcium aluminate cement
Cement and Concrete Research, 2008 The microstructural changes occurring during supercritical carbonation (scCO2) of calcium aluminate cement (CAC) and changes to its strength have been investigated. Cylindrical specimens of CAC cured at different temperatures were prepared and then subjected to scCO2.
Fernández Carrasco, Lucía +2 more
openaire +3 more sources
Cerâmica, 2014 The purpose of this study was to evaluate the physical properties and hydration evolution of calcium aluminate cement (CAC) compositions containing an advanced dispersant. The compressive strength, dimensional change, apparent porosity and quantitative X
A. P. Luz, V. C. Pandolfelli
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ANALYSIS OF CALCIUM ALUMINATE CEMENT PASTES [PDF]
, 2020 In this research different formulations of calcium aluminate cement pastes (CACP) with 71wt% Al2O3 (CACP 71wt%), (wt% -percentage by weight) were made, at 0.4 water to cement ratios (W/C), with additions of 0wt%, 10wt% and 20wt% of silica (CACP 71-0wt%, 10wt% and 20wt%, respectively).
John Zapata +2 more
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Natural fiber-reinforced light-weight cement blocks prepared from waste for sustainable development
Acta Polytechnica CTU Proceedings, 2022 Low density of the light-weight cement blocks offers an advantage in terms of dead load reduction, which is advantageous in structural design-reduction of size and numbers of load-carrying structural components is possible.
Latda Chandeng +5 more
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