The present description relates to a method of producing a wet-cast slag-based concrete product particularly where the wet-cast slag-based concrete product is partially or completely set inside a mould, pre-conditioned outside of the mould and then cured with carbon dioxide in a curing chamber. The wet-cast slag-based concrete product is optionally reinforced.

The present description relates to a method of producing a wet-cast slag-based concrete product particularly where the wet-cast slag-based concrete product is partially or completely set inside a mould, pre-conditioned outside of the mould and then cured with carbon dioxide in a curing chamber. The wet-cast slag-based concrete product is optionally reinforced.

The present invention relates to methods for forming bonded particulate refractory materials for use in metal-working, comprising the steps of providing a fine particulate metal oxide, providing an aqueous alkaline composition, providing a particulate refractory mould material, mixing the said fine particulate metal oxide, the said aqueous alkaline composition and the said particulate refractory mould material, and shooting the obtained mixture in a core shooter. Substantially all the water included in the obtained mixture is derived from the aqueous alkaline solution and optionally the surfactant. Also part of the present invention are materials and articles obtained according to the method, as well as particulate compositions for use in the method.

The present invention relates to methods for forming bonded particulate refractory materials for use in metal-working, comprising the steps of providing a fine particulate metal oxide, providing an aqueous alkaline composition, providing a particulate refractory mould material, mixing the said fine particulate metal oxide, the said aqueous alkaline composition and the said particulate refractory mould material, and shooting the obtained mixture in a core shooter. Substantially all the water included in the obtained mixture is derived from the aqueous alkaline solution and optionally the surfactant. Also part of the present invention are materials and articles obtained according to the method, as well as particulate compositions for use in the method.

As geopolymer foam formulation including an inorganic binder, a ceramic material, an alkaline activator, an alkyl polyglucoside, a gas phase and water. Moreover, a process for the manufacture of such formulation by means of mechanical and/or chemical foaming as well as to a process for the manufacture of a hardened geopolymer foam therefrom. Also, a geopolymer foam element including the hardened geopolymer foam. Finally, the use of ceramic materials for substituting fly ashes in geopolymer foam formulations. The ceramic material is preferably brick dust.

The invention relates to the use of feldspar granules with a particular combination of oxide constituents in the manufacture of artificial agglomerate stone materials and to the agglomerate stone materials resulting thereof.

The invention relates to the use of feldspar granules with a particular combination of oxide constituents in the manufacture of artificial agglomerate stone materials and to the agglomerate stone materials resulting thereof.

A composition that controls and delays generation of foam in geopolymer pastes, mortars and concretes. Embodiments include a one-part anhydrous formula for the production of geopolymer foam that requires only the addition of water. The formula includes specific and variably designed admixtures that manage a time release delivery of alkali activation components, foaming agents, and blends thereof.

A composition that controls and delays generation of foam in geopolymer pastes, mortars and concretes. Embodiments include a one-part anhydrous formula for the production of geopolymer foam that requires only the addition of water. The formula includes specific and variably designed admixtures that manage a time release delivery of alkali activation components, foaming agents, and blends thereof.

Hydrophobic aggregates for use in refractory castables and gunning mixtures and methods of their preparation. The aggregates here are formed by crushing insulating fire brick and coating the resulting particles with a hydrophobic component. The hydrophobic component may be a polydimethylsiloxane having a terminal silanol group. As a result of the coating process, the coated aggregate has very low levels of alkalis. The aggregates may be used to form refractory castables that do not undergo substantial alkaline hydrolysis due to the reduced levels of alkalis. The castables made from these aggregates display superior physical properties, including lower water content, lower permanent linear change, high strength, and superior thermal conductivity/insulation properties, while at the same time possessing lower density and requiring less water to be used during castable formation. These improved properties also are observed in gunning mixtures formed from these aggregates.