The present invention relates to fiber cement products comprising a first layer, which first layer is covered by at least one second layer, characterized in that said first layer is the top layer and the first layer material has a density of between about 0.4 and about 0.9 g/cm.sup.3 inclusive, and at least comprises cement and between 1 wt % and 70 wt % (relative to the total dry weight of said first layer material) of a lightweight filler, and said at least one second layer is the bottom layer and covers only one of the main surfaces of the first layer, thereby forming a bi-layered fiber cement product, wherein the second layer material has a density of between about 0.9 and about 1.4 g/cm.sup.3 inclusive, and at least comprises fibers and cement.

A composite rebar having ridges formed therein by grinding is buffed and/or coated to reduce the surface roughness caused by fibers extending from the rebar.

A composite rebar having ridges formed therein by grinding is buffed and/or coated to reduce the surface roughness caused by fibers extending from the rebar.

A reinforcing material that includes a resin layer and a constraining layer disposed on the resin layer. The resin layer contains a thermosetting resin, a diene rubber, a tackifier resin, and a vulcanizing agent. The thermosetting resin contains a flexible epoxy resin. The tackifier resin has a softening temperature of 75° C. or more and 100° C. or less. The tackifier resin has a bromine value of 30 gBr.sub.2/100 g or more.

A reinforcing material that includes a resin layer and a constraining layer disposed on the resin layer. The resin layer contains a thermosetting resin, a diene rubber, a tackifier resin, and a vulcanizing agent. The thermosetting resin contains a flexible epoxy resin. The tackifier resin has a softening temperature of 75° C. or more and 100° C. or less. The tackifier resin has a bromine value of 30 gBr.sub.2/100 g or more.

A method for producing a reinforcing bar by pultrusion, the method comprising the steps of: a) providing a source of fibres; b) assembling the fibres into a bundle; c) impregnating the bundle with a thermosetting resin; d) eliminating excess resin from the bundle; e) compressing the bundle in a centripetal manner; f) exposing the bundle to a radiant energy source; g) spraying particles onto a surface of the bundle; and h) exposing the bundle to radiation in order to initiate, on the surface of same, the polymerisation of the resin. The present invention also concerns a system provided with corresponding devices in order to be able to implement the method. The present invention also concerns a reinforcing bar obtained with the described method and/or system.

A method for producing a reinforcing bar by pultrusion, the method comprising the steps of: a) providing a source of fibres; b) assembling the fibres into a bundle; c) impregnating the bundle with a thermosetting resin; d) eliminating excess resin from the bundle; e) compressing the bundle in a centripetal manner; f) exposing the bundle to a radiant energy source; g) spraying particles onto a surface of the bundle; and h) exposing the bundle to radiation in order to initiate, on the surface of same, the polymerisation of the resin. The present invention also concerns a system provided with corresponding devices in order to be able to implement the method. The present invention also concerns a reinforcing bar obtained with the described method and/or system.

A concrete ceiling element for producing a concrete ceiling is disclosed. The concrete ceiling element has a flat basic structure that has an upper side and at least one FRC plate. The concrete ceiling element has at least one FRC ridge. The FRC ridge is arranged on the upper side and connected in sections to the basic structure. Furthermore, a concrete ceiling and a method for producing a concrete ceiling or a concrete ceiling element are provided.

The invention relates to a receiving structure (1) which is intended for casting into a matrix material and has at least one receiving element (4), which projects out of the receiving structure (1) in such a way that it can project into the matrix material. According to the invention, the receiving element (4) has in its interior a receiving space (6) which has an opening (10) facing the surface (94) of the component (90), through which opening (10) a functional module (60, 65, 70, 75, 80, 82, 84, 86, 88) can be guided for insertion into the receiving space (6), wherein the receiving space (6) is universally designed for receiving and connecting each of the functional modules (60, 65, 70, 75, 80, 82, 84, 86, 88, 89), wherein at least one position-securing element (40) is provided for securing the position of reinforcement (96) and substantially predetermines the outer shape of the component (90).

The invention further relates to a component (90) comprising a textile reinforcement (96), a matrix material, and conduits (16) for the passage of electricity and/or fluids. According to the invention, a receiving structure (1) comprising receiving elements (4) is embedded in the matrix material and is connected to the textile reinforcement (96) and/or the conduits (16) via position-securing elements (40), wherein the textile reinforcement (96) is aligned in a load-dependent manner with respect to the receiving elements (4), and the receiving elements (4) of the receiving structure (1) are designed in such a way that an influence on the load-bearing behavior of the produced component (90) is minimized.

The invention also relates to a method of producing a device with the receiving structure (1).

The invention relates to a receiving structure (1) which is intended for casting into a matrix material and has at least one receiving element (4), which projects out of the receiving structure (1) in such a way that it can project into the matrix material. According to the invention, the receiving element (4) has in its interior a receiving space (6) which has an opening (10) facing the surface (94) of the component (90), through which opening (10) a functional module (60, 65, 70, 75, 80, 82, 84, 86, 88) can be guided for insertion into the receiving space (6), wherein the receiving space (6) is universally designed for receiving and connecting each of the functional modules (60, 65, 70, 75, 80, 82, 84, 86, 88, 89), wherein at least one position-securing element (40) is provided for securing the position of reinforcement (96) and substantially predetermines the outer shape of the component (90).

The invention further relates to a component (90) comprising a textile reinforcement (96), a matrix material, and conduits (16) for the passage of electricity and/or fluids. According to the invention, a receiving structure (1) comprising receiving elements (4) is embedded in the matrix material and is connected to the textile reinforcement (96) and/or the conduits (16) via position-securing elements (40), wherein the textile reinforcement (96) is aligned in a load-dependent manner with respect to the receiving elements (4), and the receiving elements (4) of the receiving structure (1) are designed in such a way that an influence on the load-bearing behavior of the produced component (90) is minimized.

The invention also relates to a method of producing a device with the receiving structure (1).