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Unshaped Refractories

The Role of Granulometry and Additives in Optimising the Alumina Matrix in Low Cement Castables

Fine particles play a major role not only in the flowing characteristics of castables but also in the final properties of the castable in application.

The Enhanced Formation of Magnesium-Silica-Hydrates (M-S-H) Phase in Magnesia Castables

Magnesium-silica-hydrates (M-S-H) is regarded as an ideal bonding phase in magnesia castables due to its bonding strength and progressive dehydration behaviour over a wide temperature range during the heating-up stage.

Al2O3–SiO2 Nano-Bonded Castables Containing a Boron-Based Sintering Additive

A suitable alternative to reducing the starting sintering temperature of ceramic compositions is based on using small contents of mineralizing compounds that may speed up the reaction rate and/or induce...

High Temperature Evaluation of Mechanical Properties of Refractory Castables: Impact of Eutectic Aggregates and Testing Methods

Enhancing toughening mechanisms in ceramic technology is a key point for refractory castable formulation optimization.

Design of Self-Flow Chemically-Bonded Castables

The strength derived by using phosphate-based binders is related to the in situ generation of new phases, which takes place during the refractories’ initial processing steps.

Strength Evolution and Corrosion Resistance of a Cement-Free Al2O3-Castable Containing a Novel Hydraulic Binder Based on α-Alumina

An alternative no-cement-binder system based on reactive α-alumina and magnesia (NC-Binder) for the formulation of no cement castables has recently become commercially available under the brand name NABACAST®.