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Different types of polymeric fibers are added to refractory castables' formulations as drying additives to make dewatering processes easier and reduce the risks of explosive spalling of these...
15 Αυγ 2021 · Usually, adding water to refractory products is required due to two main aspects: (i) to induce a more efficient mixture and homogenization of the raw materials, making it easier to convey the fresh castable and shape it, and (ii) to favor the development of chemical reactions and further precipitation of hydrated phases due to the interaction ...
29 Νοε 2020 · The mixing of castable with water, preferably, is to be done in a mechanical mixer to ensure proper homogeneous mixing. These castables can be installed by casting, pouring, or ramming. The water, to be mixed, depends upon the method of installation.
Ultralite Refractory Castable (URC) is a blend of Ultralite Loose Fill and high grade refractory aggregates and cements, which results in an exceptional castable product. Ultralite Refractory Castable is available in three main grades with maximum service temperatures ranging from 1100°C (2012°F) up to 1300°C (2372°F).
Let us begin by better understanding free/chemical water ratios in castables. On average, conventional castable products require about 25% of the total water added to the dry castable mixture to hydrate the cement in order to form the expected bond structure.
30 Μαΐ 2018 · Nanoparticles present in refractory castable compositions fill the voids between the different aggregate particles, enhance the compactness, reduce the water requirement and, thereby, reduce the development of porosity and generate faster diffusion paths for sintering.
11 Σεπ 2020 · Refractory castables are a blended mixture of different fractions of refractory aggregates and fines with bonding agents and additives. They are supplied by manufacturers as loose dry powders, mixed with a liquid (usually water).
