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  • Calcium-aluminate mortars at high temperatures:

    2019-2-1u2002·u2002Calcium Aluminate Cement (CAC) is used in various high performance applications,,, ... Corundum was a reasonable choice as it was assured by preliminary qualitative XRD analyse that no traces of corundum were detected in original samples (detailed further in the Discussion section). ... The k m values were determined by mixing the pure phase ...

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  • Thermal properties of hydrating calcium aluminate cement ...

    2010-1-1u2002·u20021. Introduction. Calcium aluminate cement (CAC) is a versatile special cement that is used in high performance applications,,,, such as those requiring: resistance to chemical attack, high early strength, refractory, resistance to abrasion, and/or low ambient temperature placement. Data on thermal properties of CAC are particularly interesting due to high rate of heat generation in ...

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  • Magnesium aluminate spinel nanoparticle influences upon ...

    2018-8-15u2002·u2002Cement clinker raw meal powder used for wettability test was obtained from Helwan cement plant located in Helwan in Egypt. The chemical analysis of the raw materials used in this investigation is given in Table 1. Magnesium aluminate spinel rich magnesia (M-MA: MgO-MgOAl 2 O 4) nanoparicles was synthesized in the laboratory by Ewais et al. . An ...

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  • Hydration characteristics of tricalcium aluminate phase in ...

    2005-8-1u2002·u2002The patterns also showed an increase in the intensities of different forms of calcium aluminate (C 4 AH 13, C 4 AH 19 and C 3 AH 6). The intensity of these forms of calcium aluminates increases with the content of phosphogypsum. This is due to the larger amounts of C 3 A (55%) compared with SO 4 2− content. In addition, the peak intensities ...

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  • Aluminum Oxide (Alumina), Calcined, Tabular, and

    Tabular alumina is a high density, high strength form of α-Al2O3 made by sintering an agglomerated shape of ground, calcined alumina. It is available in the form of smooth balls which are crushed ...

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  • Hydrotalcite and hydrocalumite as resources from waste ...

    2019-5-20u2002·u2002Hydrotalcite (HT) and hydrocalumite (HC) were synthesized from active MgO, CaO and Al 2 O 3 in the presence of K 2 CO 3 using microwave-hydrothermal (M−H) process at 100 °C/1 h. The above active oxides were prepared via HCl leaching of dolomite (fine waste of concrete aggregate) and Al-dross waste, precipitated as hydroxides and then activated by calcination.

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  • (PDF) The Effect of Silica Fume Additions on ...

    calcium aluminate cement (CAC) is the most widely used high-temperature cement for concretes based on aggregates of quartz, bauxite, alumina, spinel, zirconia, and magne-

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  • Cement buying guide - manomano.co.uk

    2021-11-22u2002·u2002White cement is a finely ground cement made up of very pure raw materials including things like limestone and kaolin clay. It is suited to a range of common indoor applications and some outdoor applications such as coating exterior surfaces, pointing or mixing white concrete.. Ratios. Quick repairs: one part water to 3 parts cement.; Mortar: 1 part water to 7 parts white sand and 3 parts cement.

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  • Cement - WikiMili, The Best Wikipedia Reader

    2020-12-12u2002·u2002Calcium aluminate cements are hydraulic cements made primarily from limestone and bauxite. The active ingredients are monocalcium aluminate CaAl 2 O 4 (CaO · Al 2 O 3 or CA in Cement chemist notation, CCN) and mayenite Ca 12 Al 14 O 33 (12 CaO · 7 Al 2 O 3, or C 12 A 7 in CCN). Strength forms by hydration to calcium aluminate hydrates.

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  • Low Carbon Pulse Edition 29

    Low Carbon Pulse - Edition 29. Welcome to Edition 29 of Low Carbon Pulse – sharing significant current and recent news on progress towards net-zero greenhouse gas (GHG) emissions (NZE). This edition covers the period from Monday October 4, 2021 to Sunday October 31, 2021 (inclusive of …

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