A method and apparatus are provided to rehabilitate and beautify cracked concrete surfaces by adding channels to the surface.

A vibratory grouting drilling rig includes: a drilling rig bracket, a moving bracket, and a driving mechanism mounted on the drilling rig bracket for driving the moving bracket to move; wherein a working bracket is slidingly mounted on the moving bracket, and a sliding direction of the working bracket is identical to a moving direction of the moving bracket; a vibratory grouting rod and a drilling rod are mounted on the working bracket; multiple flexible connectors are connected between the working bracket and the drilling rig bracket, and are arranged along the moving direction of the moving bracket; the flexible connectors go around an end of the moving bracket and are connected to the drilling rig bracket. When the moving bracket moves, the flexible connectors pull the working bracket to move relative to the moving bracket, thus providing extra drilling force.

A method of fabricating a concrete slab system places bed of a first concrete on a base. The bed has a top surface, a bottom surface, and edge surfaces. The bed is exposed to a drying environment such that the top surface develops shrinkage cracks and portions of the bed separate from the base. A force applied to the top surface induces non-shrinkage cracks in the bed that extend to the bed's bottom surface. Non-concrete material is placed on the bed's top surface and on each of its edge surfaces. The non-concrete material and bed are covered with a second concrete having stretchable fibers mixed therein.

A method for adhering a tubular body onto a surface that includes smoothing a portion of the surface to create a smoothed segment of the surface and applying a tubular body directly onto the smoothed segment of the surface after the smoothing of the portion of the surface. The surface at the smoothed segment is smoother than the remainder of the surface. The method further includes applying an uncured protectant onto the tubular body while the tubular body is on the smoothed segment of the surface and curing the uncured protectant into a cured protectant while the uncured protectant is on the tubular body on the smoothed segment of the surface. The cured protectant protectively encases and adheres the tubular body to the surface.

This document discloses novel conduits for telecommunications lines, such as optical fibers. In an aspect, a conduit might have a body defining one or more channels into which optical fibers can be inserted. In another aspect, the body might have a first face that is substantially planar and a second face opposing the first face. The second face might a low-rise arc profile and/or might be configured to be installed into a depression in a material. Also disclosed are methods and tools for installing, using, and/or removing such conduit.

In a texture curing machine for the subsequent treatment of freshly produced concrete layers of a predetermined width, in particular concrete roadways extending longitudinally in the direction of travel, comprising a machine frame supported by ground-engaging units, with no less than one texturing device movable transverse to the working direction for applying a texture, by means of multiple texturing tools, into the not yet hardened surface of the concrete layer, and with a controller unit for adjusting the travelling speed in the direction of travel, it is provided for the following features to be achieved: the controller unit captures the travelling speed and/or the traversing speed of the texturing device and, during forward or reverse travel, controls the travelling speed and/or the traversing speed of the texturing device in transverse direction in accordance with a specified texturing angle, with the texturing angle ensuing from the relation of the speeds.

A concrete slab system includes a bed of a first concrete having a top surface and edge surfaces. The bed's top surface has shrinkage cracks and induced cracks. The widths of the induced cracks are greater than widths of the shrinkage cracks. Non-concrete material is disposed on the bed's top surface and on each of the bed's edge surfaces. A second concrete covers the non-concrete material and the bed. The second concrete has stretchable fibers mixed therein.

In a texture curing machine for the subsequent treatment of freshly produced concrete layers of a predetermined width, in particular concrete roadways extending longitudinally in the direction of travel, comprising a machine frame supported by ground-engaging units, with no less than one texturing device movable transverse to the working direction for applying a texture, by means of multiple texturing tools, into the not yet hardened surface of the concrete layer, and with a controller unit for adjusting the travelling speed in the direction of travel, it is provided for the following features to be achieved: the controller unit captures the travelling speed and/or the traversing speed of the texturing device and, during forward or reverse travel, controls the travelling speed and/or the traversing speed of the texturing device in transverse direction in accordance with a specified texturing angle, with the texturing angle ensuing from the relation of the speeds.

A method of fabricating a concrete slab system places bed of a first concrete on a base. The bed has a top surface, a bottom surface, and edge surfaces. The bed is exposed to a drying environment such that the top surface develops shrinkage cracks and portions of the bed separate from the base. A force applied to the top surface induces non-shrinkage cracks in the bed that extend to the bed's bottom surface. Non-concrete material is placed on the bed's top surface and on each of its edge surfaces. The non-concrete material and bed are covered with a second concrete having stretchable fibers mixed therein.

Provided is longitudinal groove forming technology that is easy to execute. A longitudinal groove forming instrument 11 is provided on a base plate bottom face of a screed 7, 8. The longitudinal groove forming instrument 11 comprises a plurality of beam members 12. The beam members 12 are disposed in parallel with the direction of travel of the screed as the axial direction. A longitudinal groove 20 is formed by the beam members 12 pressing into a leveled face when leveling a pavement face and moving in the direction of travel for leveling while the beam members are being pressed down.