A cooking appliance includes a housing having walls defining an oven cavity, at least one wall defining a window to view into the oven cavity from an outer side of the housing, a camera arranged on the outer side and being positioned such that a lens of the camera has a visibility area through the window, and an insulation block having a foamed glass or ceramic body. The insulation block is positioned between the housing and the camera, and defines a channel within the foamed glass body corresponding to the visibility area of the lens extending from the camera to the window.

A cooking appliance includes a housing having walls defining an oven cavity, at least one wall defining a window to view into the oven cavity from an outer side of the housing, a camera arranged on the outer side and being positioned such that a lens of the camera has a visibility area through the window, and an insulation block having a foamed glass or ceramic body. The insulation block is positioned between the housing and the camera, and defines a channel within the foamed glass body corresponding to the visibility area of the lens extending from the camera to the window.

A method of manufacturing a resorbable, macroporous bioactive glass scaffold comprising approximately 15-45% CaO, 30-70% SiO.sub.2, 0-25% Na.sub.2O, 0-17% P.sub.2O.sub.5, 0-10% MgO and 0-5% CaF.sub.2 by mass percent, produced by mixing with pore forming agents and specified heat treatments.

A method of manufacturing a resorbable, macroporous bioactive glass scaffold comprising approximately 15-45% CaO, 30-70% SiO.sub.2, 0-25% Na.sub.2O, 0-17% P.sub.2O.sub.5, 0-10% MgO and 0-5% CaF.sub.2 by mass percent, produced by mixing with pore forming agents and specified heat treatments.

In a method for producing an expanded-glass granular material, starting materials containing glass powder, water glass, at least one blowing agent, and metakaolin, are mixed in order to form a homogeneous slurry. The slurry is granulated to form raw granular-material particles, which are foamed at a baking temperature between 780° C. and 950° C. in order to form expanded-glass granular-material particles. The expanded-glass granular material has a long-term water absorption of less than 25 volume percent when the expanded-glass granular material is exposed to water for a time period of 21 days.

In a method for producing an expanded-glass granular material, starting materials containing glass powder, water glass, at least one blowing agent, and metakaolin, are mixed in order to form a homogeneous slurry. The slurry is granulated to form raw granular-material particles, which are foamed at a baking temperature between 780° C. and 950° C. in order to form expanded-glass granular-material particles. The expanded-glass granular material has a long-term water absorption of less than 25 volume percent when the expanded-glass granular material is exposed to water for a time period of 21 days.

A method of treating a surface to remove unwanted material therefrom, including providing a foamed glass article formed from a starting mixture including glass, a carbonate foaming agent, and a devitrification agent selected from the group potassium phosphate, potassium phosphate tribasic, sodium phosphate and combinations thereof, and contacting the surface with the foamed glass article while providing relative movement between the surface and the article. The crystal silica content of the foamed glass body is less than 1 weight percent. The surface is treated by sanding, rubbing, scraping, degreasing, polishing, cleaning, smoothing, depilling, grooming, stripping, degumming, and combinations thereof. The surface is selected from the group comprising wood, metal, plastic, fiberglass, porcelain, glass, enameled surfaces, ceramic, concrete, or tile, and belongs to a member of the group comprising pools, spas, griddles, grills, fryers, bottles, glassware, cement pieces, marble, granite, monuments, skin, animal hides, textiles, garments.

A method of treating a surface to remove unwanted material therefrom, including providing a foamed glass article formed from a starting mixture including glass, a carbonate foaming agent, and a devitrification agent selected from the group potassium phosphate, potassium phosphate tribasic, sodium phosphate and combinations thereof, and contacting the surface with the foamed glass article while providing relative movement between the surface and the article. The crystal silica content of the foamed glass body is less than 1 weight percent. The surface is treated by sanding, rubbing, scraping, degreasing, polishing, cleaning, smoothing, depilling, grooming, stripping, degumming, and combinations thereof. The surface is selected from the group comprising wood, metal, plastic, fiberglass, porcelain, glass, enameled surfaces, ceramic, concrete, or tile, and belongs to a member of the group comprising pools, spas, griddles, grills, fryers, bottles, glassware, cement pieces, marble, granite, monuments, skin, animal hides, textiles, garments.

A method for manufacturing a large sized opaque quartz glass ingot having excellent heat ray shielding and light blocking properties without using a foaming agent. The obtained opaque quartz glass has small diameter spherical bubbles and a preferable mechanical strength. Silica powder is dispersed in water to form a slurry having a silica powder concentration of 45 to 75 wt % and the average particle size of the silica powder is adjusted to 8 μm or less and the standard deviation of the particle size is adjusted to 6 μm or more by wet pulverization. The slurry is sprayed for forming granules of the silica powder. An opaque quartz glass ingot with a small bubble diameter and high mechanical strength is obtained by melting the granulated silica powder.

Systems and methods are disclosed for landfill systems, comprising waste, a geosynthetic product, and a layer of foam glass aggregates interposed between the waste and the geosynthetic product.