Abstract:
A composition, utility material, and method of making a utility material is disclosed. A composition having an improved setting time may include a plurality of microparticles mixed with a sodium silicate binder and an isocyanate setting agent, where the microparticle composition has a setting time of less than or equal to one hour. A utility material may be a wallboard that includes the composition.
Abstract:
The present invention relates to geopolymer compositions comprising additives selected from sugars and derivatives thereof and/or organic acids and salts thereof. The geopolymer compositions of the present invention have sufficient strength to be used for construction purposes. To facilitate the production method of geopolymer paste and concrete compositions the present invention further provides solid and liquid geopolymer activator compositions.
Abstract:
The invention concerns a furnace (1) with an inner wall (2), an outer wall (3) and, located between them, thermal insulation (4). The thermal insulation is foamed and cured in situ, from a preparation containing: for every 100 parts by wt. of a reactive solid (block-forming component), 40-250 parts by wt. of a water-containing hardner which initiates the curing reaction of the reactive solid (block-forming component) in the alkaline pH-range, 40-250 parts by wt. of fillers, plus a foaming agent. The reactive solid is preferably one of the following: I) a finely divided oxide mixture containing amorphous silicon dioxide and aluminium oxide; II) glassy amorphous electrostatic-filter ash; III) ground calcined bauxite; IV) electrostatic-filter ash from lignite-fired power stations; V) undissolved amorphous SiO2; particularly that obtained from amorphous anhydrous or hydrated silicic acid in disperse powder form or from high-temperature processes (silica fumes); VI) metakaolin.
Abstract:
1.- Mortero u hormigón, realizado con un conglomerante hidráulico, que incorpora áridos provenientes de escorias de cenizas de fondo de las incineradoras de residuos urbanos y/o de fangos de estaciones depuradoras de aguas residuales, u otros áridos naturales o artificiales, de distintas granulometrías en función de su uso como mortero u hormigón y un conglomerante compuesto por: vidrio y/o otras puzolanas; clinker Portland puro con la piedra de yeso o yeso cocido, o bien los cementos resultantes después de su molturación; y/o opcionalmente cal, dependiendo de la cantidad de vidrio y/o puzolanas; siendo sometidos todos los materiales que constituyen la base del conglomerante a una molienda y mezclados íntimamente hasta conseguir junto con los áridos un conglomerado con neoformaciones minerales cementantes y con un fuerte carácter puzolanico.
Abstract:
Described and claimed herein is a method of producing enhanced combustion ash for use in pozzolanic applications or cement clinker manufacture. The method employs a primary process in which wet or dry feedstock is pulverized with sonication using one or more grinding media having a maximum component size of about 2 mm. Alternatively, the media may have a true grinding medium volume to chamber volume ratio of at least 0.29. Also disclosed an claimed is an enhanced combustion ash produced by the method, whereby the enhanced combustion ash has one or more qualities that make it particularly suitable in pozzolanic applications or cement clinker manufacture.
Abstract:
The present invention relates to a method for producing a construction element comprising forming a mixture of a bituminous binder with a course aggregate, compacting said mixture at a compaction level of up to around 7 MPa, and at least partially curing the compacted mixture. There is further provided a method for producing a masonry unit, the method comprising forming a mixture containing a graded aggregate and around 6 wt % of a bituminous binder, compacting the mixture, and at least partially curing the compacted mixture. Another aspect of the present invention provides a method for producing a masonry unit, the method comprising forming a mixture containing a graded aggregate and a bituminous binder, compacting the mixture, and at least partially curing the compacted mixture by heating the compacted mixture to a temperature of around 200 °C. The present invention further relates to a masonry structure comprising a plurality of masonry units and a mortar, at least one of said masonry units comprising a graded aggregate and a bituminous binder.
Abstract:
This invention is related to manufacture of bricks wherein after applying five several processes to fly ashes which is the waste of thermal power plants is used in the mortar brick production of whom strength value is 5-10 times more than and more resistant to earthquake than present bricks. New product will provide 10 important contribution to the heat and sound isolation of the buildings due to the high gap rate of lightweight aggregates, besides of the valuation of the fly ashes which is the waste of thermal power plants.
Abstract:
We herewith propose the use of at least one nitrogen-containing organic compound and/or a salt thereof in combination with at least one aromatic carboxylic acid and/or a salt thereof for improving the freeze-thaw stability of an alkali-activated aluminosilicate binder, and a preferred alkali-activated aluminosilicate binder comprising ε-caprolactam and sodium benzoate as freeze-thaw stabilizers.
Abstract:
A composition, utility material, and method of making a utility material is disclosed. A composition having an improved setting time may include a plurality of microparticles mixed with a sodium silicate binder and an isocyanate setting agent, where the microparticle composition has a setting time of less than or equal to one hour. A utility material may be a wallboard that includes the composition.
Abstract:
The invention relates to a process for the exploitation of brown coal ash, in particular electrostatic precipitator ash arising in the dry state, to form building materials, in which a coarse fraction having a particle size lower limit about > 500 .mu.m is first mechanically separated off, the remaining fraction having a particle size upper limit about