A coated stainless-steel substrate including a coating including nanographites and a binder being sodium silicate, wherein the stainless-steel substrate has the following composition in weight percent: C≤1.2%, Cr≥11.0%, Ni≥8.0% and on a purely optional basis, one or more elements such as Nb≤6.0%, B≤1.0%, Ti≤3.0%, Cu≤5.0%, Co≤3.0%, N≤1.0%, V≤3.0%, Si≤4.0%, Mn≤5.0%, P≤0.5%, S≤0.5%, Mo≤6.0%, Ce≤1.0%, the remainder of the composition being made of iron and inevitable impurities resulting from the elaboration. A method for the manufacture of this coated stainless-steel substrate is also provided.

This disclosure is directed to an improved ballistic construct including ballistic concrete cured in a ballistic fiberglass mold, where the ballistic fiberglass mold remains part of the construct after curing. The fiberglass ballistic construct is stronger than concrete alone and does not significantly increase the weight of the construct. The improved construct is useful for firearms training and in the erecting of bulletproof structures which need ballistics protection.

This disclosure is directed to an improved ballistic construct including ballistic concrete cured in a ballistic fiberglass mold, where the ballistic fiberglass mold remains part of the construct after curing. The fiberglass ballistic construct is stronger than concrete alone and does not significantly increase the weight of the construct. The improved construct is useful for firearms training and in the erecting of bulletproof structures which need ballistics protection.

Hexavalent chromium-free slurry formulations which are suitable in the production of ceramic overlay coating systems are described. The formulations provide superior hot corrosion and heat oxidation protection for superalloy substrates. A basecoat slurry and topcoat slurry are provided. The basecoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3 with the incorporation of metal oxide particles. The topcoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3. Both of the basecoat slurry and the topcoat slurry are hexavalent chromium-free.

Hexavalent chromium-free slurry formulations which are suitable in the production of ceramic overlay coating systems are described. The formulations provide superior hot corrosion and heat oxidation protection for superalloy substrates. A basecoat slurry and topcoat slurry are provided. The basecoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3 with the incorporation of metal oxide particles. The topcoat slurry includes an aluminum phosphate based aqueous solution having a molar ratio of Al:PO.sub.4 higher than about 1:3. Both of the basecoat slurry and the topcoat slurry are hexavalent chromium-free.

An inverted roof and a method of installing the inverted roof, and in particular to an inverted roof including cellular glass insulation material having a protective alkali silicate coating on the upper surface of the cellular glass insulation material.

An inverted roof and a method of installing the inverted roof, and in particular to an inverted roof including cellular glass insulation material having a protective alkali silicate coating on the upper surface of the cellular glass insulation material.

Fresh concrete which contains in 1 m3 50 to 300 kg of water, 135 to 400 kg of cement or 135 to 600 kg of a mixture of cement and at least one substituent thereof, 10 to 150 kg of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg or 10 to 150 kg of a mixture of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg and microsilica and/or at least one substituent thereof, with a content of finely ground recyclate in this combination of at least 10% by weight, and 1000 to 2300 kg of aggregate.

Fresh concrete which contains in 1 m3 50 to 300 kg of water, 135 to 400 kg of cement or 135 to 600 kg of a mixture of cement and at least one substituent thereof, 10 to 150 kg of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg or 10 to 150 kg of a mixture of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg and microsilica and/or at least one substituent thereof, with a content of finely ground recyclate in this combination of at least 10% by weight, and 1000 to 2300 kg of aggregate.

The present invention describes a hydraulic cement composition, its obtaining process and its use. More precisely, the hydraulic cement composition comprises increased resistance to CO.sub.2 for application in subsurface fluid reservoirs.