Abstract:
An additive pack which comprises a water-soluble capsule containing a water-dispersible polymer powder (dispersion powder) is used to prepare aqueous construction materials such as cements and mortars on site, while offering set properties equivalent or superior to ready to mix dry mix formulations.
Abstract:
A fiber injector (8) has a fixed attachment (10) rigidly secured to the end of a material delivery boom. The fixed attachment (10) has a control handle (20) for controlling the location of the boom and distribution of fibers (62) into the material flowing through the boom. A rotary attachment (30) is rotatably secured to the fixed attachment (10) and is selectively rotated by an electric motor (12). A fiber distribution ring (40) is removably secured to the rotary attachment (30) and has a number of box holders (50) for receiving fiber boxes (60). The fiber boxes (60) contain the fiber (62) being injected into a material flow stream. A fiber brake (24) is mounted for selectively moving to cover fiber delivery apertures (52) in the fiber distribution ring (40) to selectively stop injection of the fiber (62) into the material flow stream.
Abstract:
A pocket former may include a pocket former body, the pocket former body having an outer surface. The pocket former may further include a collapsible element, the collapsible element formed on the outer surface of the pocket former body. The collapsible element may extend radially outwardly from the pocket former body.
Abstract:
Systems and methods are provided for securing ends of tendons in an anchor housing. Tendons having open or expanded sections are inserted through a cylindrical surface of the anchor housing. The tendons are secured in the anchor housing by grout which cooperates with the open or expanded sections and irregularities formed on the interior surface of the anchor housing.
Abstract:
Closed reinforcement fiber package includes a material disintegratable in concrete, such as fiber concrete. Reinforcing fibers are present in a loose form in the package. The reinforcing fibers may be provided in a substantially mutually parallel position in the package. The reinforcement fiber package may be provided in a chain packing or package including a number of such closed reinforcement fiber packages. The reinforcing fibers may be made of steel.
Abstract:
The invention relates to the manufacturing of a castable hot mixture of bituminous concrete, in which a multiplicity of steel wire pieces are equally distributed in the mixture. According to the invention, an ingredient is used in the form of a multiplicity of bundles in which the wire pieces are held together by a binding substance that is able to disintegrate in cementitious concrete, as already known, but that in addition is disintegrated by melting, in such a way that such bundles are usable for both cementitious and bituminous concretes.
Abstract:
To provide a concrete-reinforcing shaped body containing concrete-reinforcing fibers and having a plate-like shape. The concrete-reinforcing fibers each preferably have a diameter of 0.3 mm smaller and a length of 5 mm or larger and 25 mm or smaller.
Abstract:
Systems and methods are provided for securing ends of tendons in an anchor housing. Tendons having open or expanded sections are inserted through a cylindrical surface of the anchor housing. The tendons are secured in the anchor housing by grout which cooperates with the open or expanded sections and irregularities formed on the interior surface of the anchor housing.
Abstract:
A belt (1) for dosing reinforcing fibres (3) during the manufacture of fibre concrete material or fibre composite material comprises at least one longitudinal supporting element (2) and the reinforcing fibres (3). The fibres (3) are applied transversely or under angle different from 0° with respect to the supporting element (2). The fibres (3) are connected to the at least one longitudinal supporting element (2). The advantage of this way of dosing fibres in concrete is that the filling of sacks or bags is avoided and that the amount of foreign material getting in the concrete material is limited.