A cementitious binder, includes a hydraulic binder in an amount in the range from 50 to 80% by weight of the cementitious binder; a first siliceous based material in an amount in the range from 0.5 to 35% by weight of the cementitious binder, the first siliceous based material having a (SiO.sub.2)/(Al.sub.2O.sub.3) ratio by weight greater than 2.5; a second siliceous based material in an amount in the range from 10 to 25% by weight of the cementitious binder, the second siliceous based material being different from the first siliceous based material and having (a) a (SiO.sub.2)/(Al.sub.2O.sub.3) ratio by weight greater than 10 and (b) a BET specific surface area greater than 5 m.sup.2/g; and an aluminum based material in the range from 0 to 10% by weight of the cementitious binder and having a (SiO.sub.2)/(Al.sub.2O.sub.3) ratio by weight lower than 2.5, wherein 0.09<Al.sub.EFF/(Al.sub.EFF+Si.sub.EFF)<0.28, where Al.sub.EFF=molar content of alumina aluminum in the hydraulic binder, and Si.sub.EFF=molar content of silica in the first siliceous based material for particles having a size lower than 3 m+molar content of silica in the second siliceous based material.

Provided are: a coated sand having improved fluidity and being capable of improving a filling rate of a casting mold to be obtained; and a coated sand for advantageously manufacturing a casting mold having excellent strength, which coated sand provides a casting mold with good mold-releasability and collapsibility, gives cast products a favorable casting surface, and effectively improves sand adhesion on cast products. The coated sand is formed as a dry granular material having fluidity at room temperature, in which the surface of a refractory aggregate is coated with a solid layer of a water-soluble inorganic binder, and spherical particles of silicone resin having binder-repellency exist on the surface of the binder layer, or form a layer on the surface of the binder layer, a part of the spherical particles being not covered with the water-soluble inorganic binder and being exposed.

Embodiments provide a mortar slurry and a method for preparing a hardened mortar. The method includes the steps of: mixing an aramide capsule, a cement, a silica, and a water to form a mortar slurry; and allowing the mortar slurry to set to form the hardened mortar, where the aramide capsule is embedded in the hardened mortar. A continuous solvent and a surfactant are mixed to produce a continuous phase. A dispersed solvent and a dispersed monomer are mixed to produce a dispersed phase. The continuous solvent and a crosslinker are mixed to produce a crosslinker solution. The continuous phase and the dispersed phase are mixed to form a mixture having an emulsion such that the dispersed phase is dispersed as droplets in the continuous phase, where an interface defines the droplets of the dispersed phase dispersed in the continuous phase. The crosslinker solution is added to the mixture such that the crosslinker reacts with the dispersed monomer. An aramide polymer forms on the interface of the droplets, forming the aramide capsule. The aramide capsule is settled and separated from the mixture, and is dried to form a free flowing powder.

Disclosed herein is a method and an apparatus for producing a shaped article. The method comprises obtaining a freshly produced aluminosilicate-containing particulate waste material and, before the waste material cools to ambient temperature, mixing the waste material into a mixture, wherein the mixture comprises the aluminosilicate, a metal oxide, an alkali, a water soluble silicate and water; shaping the mixture; and curing the shaped mixture, whereby the shaped article is produced.

A ceramic slurry for forming a ceramic article includes a binder, a first plurality of ceramic particles having a first morphology, a second plurality of ceramic particles having a second morphology that is different from the first morphology; and a photoinitiator. A method for using this slurry for fabricating ceramic articles is presented as well.

A ceramic slurry for forming a ceramic article includes a binder, a first plurality of ceramic particles having a first morphology, a second plurality of ceramic particles having a second morphology that is different from the first morphology; and a photoinitiator. A method for using this slurry for fabricating ceramic articles is presented as well.

A ceramic slurry for forming a ceramic article includes a binder, a first plurality of ceramic particles having a first morphology, a second plurality of ceramic particles having a second morphology that is different from the first morphology; and a photoinitiator. A method for using this slurry for fabricating ceramic articles is presented as well.

A ceramic slurry for forming a ceramic article includes a binder, a first plurality of ceramic particles having a first morphology, a second plurality of ceramic particles having a second morphology that is different from the first morphology; and a photoinitiator. A method for using this slurry for fabricating ceramic articles is presented as well.

A coated granule that is suitable for use in a bituminous roofing membrane. The coated granule comprises: i) a granule, the granule comprising cristobalite, ii) a first coating on the surface of the granule, the coating comprising TiO2 in its anatase form and a binder, and iii) an oil barrier coating on the first coating, the oil barrier coating being a compound which will form a bond with a bituminous material, the oil barrier degrading upon exposure to the ultra violet radiation in sunlight and/or the action of rainwater to thereby expose the first coating.

An eco-tile useful for promoting the growth of fauna and flora in an aquatic environment, the eco-tile including at least one type of cement; aggregates comprising at least two fine aggregates and coarse aggregates; and milled incineration sewage sludge ashes, wherein the at least two fine aggregates comprise dredged marine sediment, eco-concrete precursors thereof, and methods of use and preparation of the same.