Abstract: A smoking pipe includes a bowl defining an interior chamber for holding a quantity of combustible substance. The bowl has an upper opening and optional lower opening. A stem extends from the bowl to define an interior airway with an opening proximate a distal end of the stem. The optional lower opening and interior airway are in gaseous communication with the interior chamber of the bowl. An example pipe has its bowl shaped to allow the pipe to be received in a bowl-stem of a waterpipe with the interior chamber of the bowl in gaseous communication with an airway of the bowl-stem via the lower opening of the bowl. Another example pipe has its upper and stem openings sealed to maintain freshness of pre-loaded cannabis. The pipe may be made of corncob and may be disposable. More broadly, a vessel for both storage of cannabis and consumption thereof is disclosed.

Abstract: The method for applying a heat insulation layer to an area is characterized in that alpha-hemihydrate or beta-gypsum or lime-alpha-hemihydrate or a mixture thereof is mixed as hydraulic binder with a pore former consisting of aluminum powder, mixed with ground limestone, and citric acid with addition of water and is cast in liquid or pasty form onto the area. The mixture has a pH of 11.8 or more. The constituents are preferably mixed on site, namely in such a consistency that the mixture is self-leveling. Placement on the laying site can e.g. be carried out by means of a floor screed pump. The material expands to the desired total thickness, yielding a homogeneous insulation layer of uniform thickness and quality and of high strength that will reach its high final strength after about 24 hours. The material can also be applied in a pasty consistency to a wall.

Abstract: A hydraulic binder based on slag cement, the slag cement including 20 to 80 weight % relative to a total weight of slag cement, of a blast furnace slag or a mixture of blast furnace slags, relative to the total weight of the slag cement, the hydraulic binder including an acceleration additive that is a ternary system including at least one alkali metal hydroxide in an amount such that, during mixing with water of the hydraulic binder, a molar concentration of the alkali metal hydroxide in the water is from 0.05N to 0.60N, preferably from 0.20N to 0.40N; an alkali metal sulfate at a rate of from 0.2 to 3 weight % of the slag cement; and a source of calcium sulfate in such a proportion that the content of calcium sulfate (CaSO4), relative to the weight of the slag cement, is from 2 to 7%.

Abstract: The present invention relates to an arrangement and method that help to reduce the build-up formed on the grate of a fluidized-bed furnace in the roasting of fine-grained material such as concentrate. The concentrate is fed into the roaster furnace from the wall of the furnace, and oxygen-containing gas is fed via gas jets under the grate in the bottom of the furnace in order to fluidize the concentrate and oxidize it during fluidization. Below the concentrate feed point, or feed grate, the oxygen content of the gas to be fed is raised compared with gas fed elsewhere using additional gas jets situated in the feed grate higher than the other jets. The extra jets of the feed grate are connected to their own gas distribution unit.

Abstract: A clay-free, asbestos-free and glass microbubble-free, drying type Joint compound containing an in-situ or associative thickener as a substitute for asbestos and any clay substitute therefor. In particular, these drying type joint compounds contain no attapulgus clay thereby improving viscosity stability, crack resistance and shrinkage. The lightweight joint compounds contain treated expanded perlite, treated to render it water-insensitive. The preferred in-situ thickeners are acidic acrylate copolymers. It has been found that the in-situ thickeners should be used in combination with the normal cellulosic thickeners used in joint compounds Instead of as replacements therefor. The joint compounds contain the usual fillers and latex emulsion binders, with at least about 50% by weight of the drying type joint compound being a filler selected from the group consisting of calcium carbonate and calcium sulfate dihydrate.

Abstract: Disclosed is a fiber-reinforced cement composition particularly useful to make pipes or sheets. This composition comprises up to 70% by weight of a fibrous-like synthetic forsterite obtained by calcination of chrysotile asbestos fibers at a temperature of from 650.degree. C. to 1450.degree. C., said synthetic forsterite having an MgO:SiO2 ratio lower than 1.1, a raw loose density of from 3 to 40 pcf, a thermal conductivity "k" factor of from 0.25 to 0.40 BTU. in/hr. .degree.F. ft.sup.2 and a fusion point of from 1600.degree. to 1700.degree. C. The composition also comprises a hydraulic binder, which is preferably Portland cement, and reinforcing fibers such as cellulose, synthetic fibers, glass wool, rock wool or their mixtures, in such an amount as to give sufficient strength to the composition to make it operative.

Abstract: According to the invention a pozzolan is selected which exhibits a capacity for fixing lime during the Chapelle test at 90.degree. C. greater than 700 mg of CaO per gram of pozzolan, a capacity for fixing lime during the Chapelle test at 50.degree. C. greater than 200 mg of CaO per gram of pozzolan and a ratio of the quantity of CaO fixed during the 50.degree. C. Chapelle test to the specific surface area of the pozzolan which is greater than about 10 mg of CaO per square meter of pozzolan. The composite material obtained is used in construction to produce facade elements, for example, which have improved resistance to aging.