Abstract:
The invention relates to a hydraulic binding agent, comprising K, Ca, aluminosilicates and optionally Li, Na, and MG, characterized in that it comprises the following constituents: a) latent hydraulic aluminosilicate glass at a ratio of (CaO+MgO+AI2O3)/SiO2 > 1 and b) alkali activator of the empirical formula (I): a(M2O) * X(SiO2) * y(H2O), where M = Li, Na, K, a = 0-4 and x = 0-5 and y = 3-20, wherein the mol ratio Ca/Si 0.1. The invention further relates to binding agent matrixes, to mortar, to concrete adhesive and to metal anodes produced from said binding agent.
Abstract:
The aim of the invention is to develop a method for producing massive-amorphous layers on massive metallic shaped bodies. According to said method, amorphous layers having a thickness of > 20 ñm can be produced in only one procedure step. To this end, alloys which can be used for producing massive metallic glasses under quick solidification conditions or alloy elements which can be used for producing massive metallic glasses together with the elements of the shaped body material and under quick solidification conditions are molten by means of high-energy radiation and are directly applied onto the massive metallic shaped body for producing an amorphous layer that is > 20 mu m up to several millimetre thick or are alloyed into the surface of the shaped bodies. The melt is quickly solidified by means of natural cooling and/or forced air cooling of the shaped body. The inventive method enables to coat metallic shaped bodies with massive metallic glasses which improve the surface characteristics. Such layers can be used for increasing the anticorrosion or wear and tear properties of shaped bodies for instance.
Abstract:
The invention relates to a device for feeding and/or replacing a continuous strip (11), especially a felt or screen belt of a paper, cardboard or tissue machine, which device comprises a supporting element (10). The supporting element (10) can be used to bring the strip (11) approximately into geometry before it is fed to the machine, said geometry corresponding to the installation situation of the strip (11) in the machine. A supporting device is used for transporting the supporting element. The supporting element (10) consists of at least one inflatable air cushion.
Abstract:
A detachable connecting arrangement for fitting launchable external loads (3) to an aircraft, having at least one hook-like connecting element (1), which can be fitted to the external load (3), and having at least one holding element (2), which can be fitted to the aircraft (4), for the hook-like connecting element (1); distinguished in that the hook-like connecting element (1) is provided with at least one lower supporting surface (13) and at least one upper supporting surface (11); in that the holding element (2) is provided with at least one first opposing supporting surface (23), which is designed to interact with the at least one lower supporting surface (13), and with at least one second, upper opposing supporting surface (21), which is designed to interact with the at least one upper supporting surface (11), wherein the lower supporting surface (13) and the first opposing supporting surface (23) are designed to support mass forces of the external load (3) directed away from the aircraft, and wherein the upper supporting surface (11) and the upper opposing supporting surface (21) are designed to support mass forces of the external load (3) directed towards the aircraft.
Abstract:
The invention relates to a sheet-forming system (1) for a machine (2) for producing an at least single-layer fibrous material web (3), in particular a paper, cardboard or packaging paper web, from at least one fibrous material suspension (4; 4.1, 4.2). The system comprises at least one single-layer headbox (5) and a twin wire former (6), which comprises two endless wires (7, 8), each revolving in a wire loop (7.1, 8.1). The first wire is a Fourdrinier wire (7), which, in a pre-dewatering section (9) downstream [or in the region] of the application of the at least one fibrous material suspension (4; 4.1, 4.2) in the form of a free fibrous material suspension jet (4.S) by means of the at least single-layer headbox (5), is guided over a wire table (10) that is stationary and preferably under suction, the surface (11) of which touching the Fourdrinier wire (7) is formed by a covering (12) having a plurality of foils (13) which are arranged in succession in the wire running direction (S) and extend in the transverse machine direction (CD) and have interposed free dewatering openings (14), and over a plurality of suction elements (15), in particular suction boxes (15.1). The second wire is a top wire (8), and the two wires (7, 8) together form, at least in sections, a twin wire zone (16) having a wedge-shaped infeed nip (17). In the twin wire zone (16), the top wire (8) guided over an infeed roller (18) runs over a plurality of rigidly arranged foils (19), which are arranged spaced with respect to each other at a dewatering box (20). The sheet-forming system (1) according to the invention is characterised in that the covering (12) of the stationary wire table (10) that is preferably under suction comprises at least two zones (10.Z1, 10.Z2), each having a plurality of foils (13), wherein the foils (13) arranged in the first zone (10.Z1) are arranged with an average spacing (10.Z1.TD) in the range between 20 and 70 mm, preferably between 20 and 40 mm, more particularly between 20 and 35 mm, and the foils (13) arranged in the second zone (10.Z2) are arranged with an average spacing (10.Z2.TD) in the range between 50 and 120 mm, preferably between 50 and 100 mm, more particularly between 50 and 80 mm.
Abstract:
The invention relates to a galvanic anode system for corrosion protection of steel, comprising a solid electrolyte and galvanic anode material stuck to or embedded in the solid electrolyte, preferably zinc and the alloys thereof. The solid electrolyte is characterised by a high ionic conductivity and preferably contains at least one anionic and/or cationic polyelectrolyte and/or preferably at least one compound which forms complexes with the anode material, preferably with zinc. The solid electrolyte is produced by the application of a coating agent, preferably as an aqueous dispersion or suspension, to the steel or the mineral base which is preferably concrete. The anode material is characterised in forming a galvanic element with the solid electrolyte and the steel for protection, in which steel forms the cathode. Said galvanic anode system is further characterised in that the anode material is preferably applied as a film, net or mesh to the surface of the solid electrolyte, preferably by gluing and/or is embedded in the solid electrolyte.
Abstract:
The invention relates to a machine for producing a compacted or non-compacted sack paper web (12), said machine having a head box (1), a screen section (2), a press section (3), a dry section (4A and 4B) and a winding unit (7) and the press section (3) consisting of a single press nip that is designed as a shoe press nip, said nip being formed by a counter-roll and a shoe press roll (9).
Abstract:
The invention relates to a method for removing corrosive anions from the pore solutions of porous solids, e.g., concrete or brick walls and components, the method being characterized in that a water-based coating containing zinc is applied to the porous solid or the solid is impregnated with the coating, whereupon the corrosive anions in the pore solution are allowed to migrate to or into the coating and/or are caused to migrate to or into the coating containing zinc in order to form a compound there with the zinc, the compound being insoluble or poorly soluble in water.
Abstract:
The invention relates to an electrically conductive microcapillary composite matrix produced by depositing on mortar or concrete a paint or coating material which contains at last one of the following compounds: aluminium silicate of the empirical formula aM2O*bAl2O3*cSiO2, at a ratio c/b in the region of 1 to 40, preferably in the region of 5 to 20, and a ratio a/b in the region of 1 to 25, preferably in the region of 5 to 15, where M = Li, Na, K; aluminium hydroxo complex of the empirical formula MxAl(OH)y, where x is between 1 and 3, y between 4 and 6 and M = Na, K; aluminium phosphates, preferably condensed aluminium phosphates in combination with water-soluble alkali silicates. The electric conductivity of the paint or coating material is achieved by the admixing of electrically conductive pigments and/or fibrous materials. The specific electric resistance of the microcapillary composite matrix, measured at the surface, is less than 25 Ohm.cm, preferably less than 5 Ohm.cm.