7 results about "Structural rehabilitation" patented technology

This invention provides a method for repairing underwater concrete structures that allows for easy and reliable repair of areas requiring repair, while minimizing the risk of the repair filler material falling off after repair. [Solution] A method for repairing a part requiring repair formed on the bottom surface 1a of a concrete structure 1 underwater, comprising: a filling space formation step of chipping away the part requiring repair to form a filling space A for a repair filling material 4 having an opening 3a on the bottom surface 1a of the concrete structure 1; a filling space shaping step of forming an inclined surface 3b that expands upward on the entire circumference or part of the inner surface of the opening 3a; a repair filling material filling step of filling the filling space A with the repair filling material 4; and a filling space closing step of closing the opening 3a from below with a bottom plate 5 and placing a buoyancy body 7 filled with air below the bottom plate 5, thereby pressing the bottom plate 5 against the opening 3a with the buoyancy of the buoyancy body 7.

The application belongs to the technical field of building structure connecting joint, and discloses a beam end cast-in-situ fabricated flexible replaceable joint embedded with a damper and a construction method. The technical scheme is as follows: a beam component comprises a prefabricated beam segment and a cast-in-situ beam segment; the cast-in-situ beam segment is arranged between a prefabricated associated component and the prefabricated beam segment. An L-shaped cutout is arranged at the bottom of one end of the prefabricated beam segment, and an L-shaped embedded steel plate is arranged at the cutout; an extended segment of the L-shaped embedded steel plate is connected with the beam bottom of the cast-in-situ beam segment. A right-angled triangle notch is arranged at the connecting section of the cast-in-situ beam segment and the prefabricated associated component. The damper is horizontally arranged below the L-shaped embedded steel plate, one end of the damper is connected with the side wall of the prefabricated associated component, and the other end of the damper is connected with a downward outward convex damper connecting steel plate of the L-shaped embedded steel plate. While the load bearing capacity and energy dissipation capacity of the structure are ensured, the damage of the joint structure is reduced, the structure repair cost and repair period are greatly reduced, the rapid recovery of the structure after disaster is realized, and the structural toughness is improved.

To provide a method for repairing concrete structures that can improve the adhesion of repair materials to the surface of concrete structures and has high water vapor permeability. [Solution] The method for repairing concrete structures comprises steps S20, S40, and S50. Step S20 involves applying a first curable composition containing a material that is liquid at 40°C, has a flash point, and is water-soluble, and a primer containing water to the surface of the concrete to be repaired. Step S40 involves applying or impregnating a laminate with the second curable composition to the primer-coated surface of the concrete after step S20, and attaching the repair material. Step S50 involves curing the primer and curable composition after step S40.

A method for repairing cracked concrete including the steps of creating purposeful grooves along the cracks. The extracted concrete is then broken down into pieces of a size not exceeding the width of the grooves. Following this, a thorough cleaning of the grooves is conducted. A compacted layer of a granular material is placed all over the grooves, then a high-density mesh is placed on top. Subsequently, an amalgamation of repurposed concrete and hydraulic concrete is expertly poured over the grooves. The method culminates with the application of a final finish across the entire driveway, imparting heightened durability. Additionally, a touch of aesthetic flair is introduced through the mounting of a decorative element on the compacted concrete. This method uniquely combines structural repair with visual enhancement, offering a comprehensive solution for cracked concrete driveways.