Abstract:
The invention relates to a sandwich panel, comprising: —a core, comprising: —a plurality of zigzag-shaped first spacers extending in a first longitudinal direction, each first spacer comprising at each corner thereof a first loop; —a plurality of zigzag-shaped second spacers extending in the first longitudinal direction, each second spacer comprising at each corner thereof a second loop, each second loop having outer dimensions that are smaller than the inner dimensions of each first loop, —wherein the second loops of each second spacer extend through the first loops of an adjacent first spacer; —wherein the openings defined by the second loops of successive second spacers are registered in rows extending in a second longitudinal direction, which second longitudinal direction extends under an angle of at least 20° with respect to the first longitudinal direction; and—wherein the first spacers and the second spacers define a second zigzag-shape in the second longitudinal direction; —two skin layers arranged on opposite sides of the core, wherein each skin layer comprises a plurality of openings through which the second loops extend; —a plurality of rods, each rod extending through the openings of the second loops of each row at the outer surface of each skin layer such that each rod locks the second loops in the first loops with respect to the skin layer. The invention further relates to a method of building such a sandwich panel, a core of such a sandwich panel, and a building built of a plurality of such sandwich panels.
Abstract:
Die vorliegende Erfindung betrifft ein Verbundsystem zur Verstärkung von Wänden und Stützen mit an diesen form- und kraftschlüssig befestigten zugfesten Elementen (2).
Abstract:
In accordance with various embodiments of the disclosed subject matter, a composite material is provided. The composite material in accordance with some embodiments of the disclosed subject matter includes a high tenacity fiber reinforced polymer fabric and a polyurea coating layer formed on at least one surface of the polymer fabric. The composite material provides significant strength, flexibility, and energy dissipation. In some embodiments, the composite material can be used to reinforce structural and non-structaral. substrates.
Abstract:
The invention relates to reinforcement bars for concrete structures, comprising a large number of continuous, parallel fibers, preferably made of basalt, carbon, glass fiber, or the like, embedded in a cured matrix, the bars preferably having an average length of 20 mm to 200 mm, and an average diameter of 2 mm to 10 mm, each bar being made of at least one fiber bundles comprising a number of parallel, preferably straight fibers having a cylindrical cross section and said bars being provided with a surface shape and/or texture which contributes to good bonding with the concrete. At least a part of the surface of each bar being deformed prior to or during the curing stage of the matrix by means of: a) one or more strings of an elastic or inelastic, but tensioned material being helically wound around said at least one bundle of parallel, straight fibers prior to curing of the matrix in which the fibers are embedded, maintaining the fibers in an parallel state during curing and providing an uneven external surface in a longitudinal direction of the reinforcement bars, and/or b) at least one deformed section and/or at least one end of each reinforcement bar; thereby producing a roughened surface. The invention also relates to a method for manufacturing reinforcement bars and for use of such short fibers.
Abstract:
Der erfindungsgemäße Baukörper wird durch eine aus Textilbeton bestehende Wandanordnung (12) gebildet, die einen Innenraum (11) umschließt, Die Verwendung von Textilbeton zur Erstellung des erfindungsgemäßen Baukörpers (10) gestattet die Ausführung mit besonders dünner Wandstärke sowie auch die Ausbildung relativ filigraner Verstärkungsstrukturen zur Aussteifung.
Abstract:
Method of producing an elastic composite material comprising the step of impregnating a fiber fabric with a liquid epoxy system comprising an epoxy resin and a hardener, and curing the impregnated fabric, whereby the epoxy system exhibits a tensile modulus lower than 15 MPa after cure.
Abstract:
Method of producing an elastic composite material comprising the step of impregnating a fiber fabric with a liquid epoxy system comprising a non-aromatic epoxy resin and a hardener, and curing the impregnated fabric, whereby the epoxy system exhibits a tensile modulus lower than 15 MPa after cure.
Abstract:
Die vorliegende Erfindung betrifft Plattenelemente, hergestellt durch Verpressung von expandiertem Grafit, welche durch Einbringen von strukturverstärkenden Elementen derart stabilisiert sind, dass sie selbsttragende Plattenelemente bilden. Erfindungsgemäß ist es dazu vorgesehen, als strukturverstärkende Elemente beispielsweise Fasern, Kunststoff-Monomere oder -Polymere, und/oder Klebstoffe zumindest in die Randbereiche des Plattenelementes einzubringen.
Abstract:
A wind turbine tower (102) including a plurality of tower sections (106) is provided. At least one of the tower sections includes a first concrete segment, a second concrete segment formed separately from the first concrete segment, and a third concrete segment formed separately from the first concrete segment and the second concrete segment, the third concrete segment positioned between the first concrete segment and the second concrete segment.