Abstract:
A dry cement mixture comprises Portland cement and an ultra-fine component consisting of at least one ultra-fine additive, said ultra-fine component being a hydraulic binder, wherein Portland cement is present in an amount of at least 70 wt % of the mixture and the ultra-fine component is present in an amount of at least 5 wt % of the mixture, wherein the ultra-fine component has a particle size distribution characterized by a particle diameter D10 of between 0.5 μm and 2 μm and a particle diameter D90 of between 2 μm and 8 μm.
Abstract:
In a method for reprocessing wet waste materials containing organic components, in particular sludges in a cement clinker production plant, in which raw meal is preheated in a preheater (3) in countercurrent flow to the hot exhaust gases of a clinker furnace (2), and calcined in a calciner (4) fired with alternative fuels, the wet waste materials are dried in a drying unit (18) using a hot gas produced from the preheater waste heat and the dried waste materials and the drier exhaust gases are discharged from the drying unit (18), wherein the drier exhaust gases are introduced into the calciner (4).
Abstract:
In a method for reprocessing wet waste materials containing organic components, in particular sludges in a cement clinker production plant, in which raw meal is preheated in a preheater (3) in countercurrent flow to the hot exhaust gases of a clinker furnace (2), and calcined in a calciner (4) fired with alternative fuels, the wet waste materials are dried in a drying unit (18) using a hot gas produced from the preheater waste heat and the dried waste materials and the drier exhaust gases are discharged from the drying unit (18), wherein the drier exhaust gases are introduced into the calciner (4).
Abstract:
In a method for reprocessing wet waste materials containing organic components, in particular sludges in a cement clinker production plant, in which raw meal is preheated in a preheater (3) in countercurrent flow to the hot exhaust gases of a clinker furnace (2), and calcined in a calciner (4) fired with alternative fuels, the wet waste materials are dried in a drying unit (18) using a hot gas produced from the preheater waste heat and the dried waste materials and the drier exhaust gases are discharged from the drying unit (18), wherein the drier exhaust gases are introduced into the calciner (4).
Abstract:
A method includes utilizing a component A selected from mineral component, sand, wood flour or combinations thereof, for reducing the thermal conductivity of a mineral foam, the mineral foam is produced by a process including contacting a cement slurry and a gas-forming liquid, the cement slurry includes a cement composition, ultrafine particles of which the D50 is from 10 to 600 nm, a transition metal salt and water, the cement composition including a Portland clinker and the component A, the gas-forming liquid includes a gas-forming agent.
Abstract:
A dry cementitious material mixture for 3D-printing, includes a hydraulic cement, at least one viscosity enhancing admixture, and clay and optionally aggregates, wherein the at least one viscosity enhancing admixture is present in an amount of 0.05-1.5% by weight based on the hydraulic cement and the clay is present in an amount of 0.01-5.0% by weight based on the hydraulic cement.
Abstract:
A roof system comprising a roof substrate, a first membrane including first and second opposed planar surfaces, and a second membrane including opposed first and second planar surfaces, where said second membrane is adhered to said roof substrate through an adhesive disposed on said roof-substrate contacting portion of the first membrane, and where said second membrane is adhered to said first membrane through said adhesive disposed on a lap portion of said second membrane.
Abstract:
Foam compositions are provided. The compositions are prepared from multi-functional acetoacetate esters and multi-functional amines or acrylates. The foam compositions can include one or more additives. The foam compositions can be used for home and commercial insulation, air sealing, sound proofing, structural improvement, and exterior roofing, among other applications. The foam compositions provide advantages of being isocyanate free and offer reduced exposure to isocyanate.
Abstract:
A method of preparation of a construction element by carbonation, includes a) preparing a composition containing a cement, water and chemical additives; b) pre-drying the composition; then c) placing the pre-dried composition in a chamber of an incubator, the chamber containing at least one inlet and one outlet, the pre-dried composition being carbonated, in a carbonation procedure, by feeding into the chamber, through the inlet, a flow of CO2 containing gas, variations of the CO2 concentration in the chamber being kept below 10% of a reference value during the whole carbonation procedure, during the carbonation procedure, the pressure within the chamber being atmospheric pressure, the relative humidity within the chamber being above 80° % and the temperature within the chamber ranging from 20° C. to 80° C. The chemical additives in the composition include more than 0.05% in weight, compared to the total weight of the cement, of a cement hydration retarder.