A fiber pre-dispersing device for fiber reinforced concrete, comprising: a dispersing chamber, a feed inlet is installed on the upper side of a dispersing chamber, a hopper is installed in the feed inlet, a first dispersing device is installed in the dispersing chamber, a discharge outlet is installed at the bottom of the dispersing chamber, and connected with a second dispersing device, grooves are arranged at both sides of dispersing chamber, supporting legs are installed in the grooves. According to the invention, the device has a first dispersing device and a second dispersing device, and the dispersing blocks in the first dispersing device cooperates with the dispersing gears of the roller to preliminarily disperse and stir the fiber raw materials, a second dispersing device; dispersing the preliminary dispersed fiber raw materials, in order to control the fineness of pre-dispersed fiber raw materials, oil cylinders arranged on both sides can push their respective grinding cylinders to adjust the dispersion, thus improving both fiber dispersion effect and using the effect in concrete works.

A fiber pre-dispersing device for fiber reinforced concrete, comprising: a dispersing chamber, a feed inlet is installed on the upper side of a dispersing chamber, a hopper is installed in the feed inlet, a first dispersing device is installed in the dispersing chamber, a discharge outlet is installed at the bottom of the dispersing chamber, and connected with a second dispersing device, grooves are arranged at both sides of dispersing chamber, supporting legs are installed in the grooves. According to the invention, the device has a first dispersing device and a second dispersing device, and the dispersing blocks in the first dispersing device cooperates with the dispersing gears of the roller to preliminarily disperse and stir the fiber raw materials, a second dispersing device; dispersing the preliminary dispersed fiber raw materials, in order to control the fineness of pre-dispersed fiber raw materials, oil cylinders arranged on both sides can push their respective grinding cylinders to adjust the dispersion, thus improving both fiber dispersion effect and using the effect in concrete works.

This technology comprises a combined accessory of an in-situ concrete 3-D printed horizontal load-bearing member and a preparation method. The combined accessory includes 3-D printed concrete and a bottom mesh, the 3-D printed concrete contains fine aggregates having the particle size of 0.08 mm-4.75 mm, and the fluidity of the 3-D printed concrete is larger than or equal to 110 mm and smaller than or equal to 190 mm; the bottom mesh is a reinforcing mesh or expanded metal, the diameter of the reinforcing bar is larger than or equal to 0.5 mm, and the mesh aperture of the reinforcing mesh is smaller than or equal to 7.5 times of an upper limit of the particle size of the fine aggregate and is larger than or equal to 7.5 times of a lower limit of the particle size of the fine aggregate.

This technology comprises a combined accessory of an in-situ concrete 3-D printed horizontal load-bearing member and a preparation method. The combined accessory includes 3-D printed concrete and a bottom mesh, the 3-D printed concrete contains fine aggregates having the particle size of 0.08 mm-4.75 mm, and the fluidity of the 3-D printed concrete is larger than or equal to 110 mm and smaller than or equal to 190 mm; the bottom mesh is a reinforcing mesh or expanded metal, the diameter of the reinforcing bar is larger than or equal to 0.5 mm, and the mesh aperture of the reinforcing mesh is smaller than or equal to 7.5 times of an upper limit of the particle size of the fine aggregate and is larger than or equal to 7.5 times of a lower limit of the particle size of the fine aggregate.

Systems and methods of shotcrete construction are contemplated whereby guide rails are placed in proximity and forward to a shotcrete receiving surface, with any guide rails disposed directly in front of the shotcrete receiving surface being configured to be offset from the receiving surface allowing shotcrete to be sprayed behind the offset guide rails. Following application of shotcrete, a screed configured to engage with and traverse along at least two of the guide rails may be used to rod the shotcrete via a protruding region of the screed extending beyond the guide rails, thereby removing excess shotcrete and imparting to the shotcrete surface a contour at least partially defined by the configuration of the guide rails and the configuration of the protruding region of the screed. Complex, precise, and even exotic architectural shotcrete installations may be created in this fashion by providing a suitable set of guide rails and screed.

Systems and methods of shotcrete construction are contemplated whereby guide rails are placed in proximity and forward to a shotcrete receiving surface, with any guide rails disposed directly in front of the shotcrete receiving surface being configured to be offset from the receiving surface allowing shotcrete to be sprayed behind the offset guide rails. Following application of shotcrete, a screed configured to engage with and traverse along at least two of the guide rails may be used to rod the shotcrete via a protruding region of the screed extending beyond the guide rails, thereby removing excess shotcrete and imparting to the shotcrete surface a contour at least partially defined by the configuration of the guide rails and the configuration of the protruding region of the screed. Complex, precise, and even exotic architectural shotcrete installations may be created in this fashion by providing a suitable set of guide rails and screed.

A hose support includes: a body defining at least one concave surface configured to receive a concrete slurry hose, the body including at least one support surface configured to rest on pavement; where the at least one concave surface is displaced from the at least one support surface to support the concrete slurry hose above the pavement; and where: the at least one concave surface is configured to slidably receive the concrete slurry hose; or the at least one support surface is configured to slidably rest on the pavement while the body receives the concrete slurry hose; or a combination thereof.

A hose support includes: a body defining at least one concave surface configured to receive a concrete slurry hose, the body including at least one support surface configured to rest on pavement; where the at least one concave surface is displaced from the at least one support surface to support the concrete slurry hose above the pavement; and where: the at least one concave surface is configured to slidably receive the concrete slurry hose; or the at least one support surface is configured to slidably rest on the pavement while the body receives the concrete slurry hose; or a combination thereof.

A hose support includes: a body defining at least one concave surface configured to receive a concrete slurry hose, the body including at least one support surface configured to rest on pavement; where the at least one concave surface is displaced from the at least one support surface to support the concrete slurry hose above the pavement; and where: the at least one concave surface is configured to slidably receive the concrete slurry hose; or the at least one support surface is configured to slidably rest on the pavement while the body receives the concrete slurry hose; or a combination thereof.

A hose support includes: a body defining at least one concave surface configured to receive a concrete slurry hose, the body including at least one support surface configured to rest on pavement; where the at least one concave surface is displaced from the at least one support surface to support the concrete slurry hose above the pavement; and where: the at least one concave surface is configured to slidably receive the concrete slurry hose; or the at least one support surface is configured to slidably rest on the pavement while the body receives the concrete slurry hose; or a combination thereof.