Korea Institute of Civil Engineering and Building Technology

Gum Sung Ryu

Hyeong Yeol Kim

Gi Hong An

Kyung Taek Koh

Dong Woo Seo

Young Jun You

Seung Seop Jin

Jae Joon Song

Jae Yoon Kang

Jong Dae Baek

Byung Suk Kim

Sung Yong Park

Byung Soon Kim

Ga Young Kim

Seung Hun Park

Provided are a concrete structure repaired and reinforced using a textile grid reinforcement and a highly durable inorganic binder and a method of repairing and reinforcing the same, capable of easily repairing and reinforcing an old concrete structure by adhering a textile grid reinforcement, which is coated with a coating material to improve adhesiveness, to the old concrete structure and by adhering a textile grid reinforcement selectively using a highly durable inorganic binder having chloride penetration resistance performance or chemical resistance performance according to a use environment and a reinforcement purpose, that is, by adhering a textile grid reinforcement using an inorganic binder such as cement in place of an organic adhesive. Further, the concrete structure has excellent refractory performance because both the textile grid reinforcement such as a carbon fiber and the highly durable inorganic binder are incombustible materials, and can be effectively applied to reinforcing facilities exposed to the danger of fire.

Concrete structure repaired and reinforced using textile grid reinforcement and highly durable inorganic binder and method of repairing and reinforcing the same

Provided are an apparatus for manufacturing a textile grid with increased adhesion and a method thereof capable of integrating the textile grid with a concrete structure by increasing the adhesion of the textile grid when the concrete structure is built, repaired, or reinforced, increasing structural safety and durability of the concrete structure, increasing a working speed by coating a surface of the textile grid with an abrasive material powder that is a surface coating material in an automatic series of processes immediately after the textile grid is manufactured, and increasing coating performance by automatically inspecting and adjusting the amount of the coating material applied to the surface of the textile grid using a camera.

Apparatus for manufacturing textile grid with increased adhesion and method thereof

The present disclosure provides a concrete structure strengthened using a grid reinforcement material and non-shrink grout and a method of strengthening the same in which, when strengthening a concrete structure such as a concrete slab or a concrete wall body that is damaged or deteriorated, a grid reinforcement material is mounted on one side of the concrete structure, a formwork is formed on an outer side of the grid reinforcement material to have a required gap, and then the gap is filled with non-shrink grout so that the non-shrink grout is cured therein to strengthen the old concrete structure, thereby being able to automatically fill and repair cracks formed in the concrete structure just by injecting the non-shrink grout without separately performing crack repair on the old concrete structure. Also, the grid reinforcement material may be easily fixed or mounted using a grid fixing device and may be easily applied to strengthening of a concrete structure having a curved surface as well as a concrete structure having a flat surface such as a concrete slab or a concrete wall body. In addition, reinforcing bars may be additionally arranged in a gap between a surface of the concrete structure and the grid reinforcement material so that the grid reinforcement material increases a cover thickness, and thus the concrete structure is remarkably strengthened.

Concrete structure strengthened using grid reinforcement material and non-shrink grout and method of strengthening the same

The present invention provides a concrete vacuum tube segment for a hyper-speed transportation system using ultra-high performance concrete (UHPC) and a manufacturing method thereof. A concrete vacuum tube segment for a hyper-speed transportation system can be easily manufactured using UHPC, in which shrinkage and structural cracking do not occur due to mixing a binder and a short fiber to secure airtightness on the basis of a maximum fill theory, and accordingly, shrinkage of the concrete vacuum tube segment can be reduced even in a partial-vacuum state in which the magnitude of drying shrinkage is very small and quick drying occurs; when mixing the UHPC, an antifoaming agent is mixed and a circular vacuum pump is used to remove generated entrapped air to minimize the entrapped air; and a capsule-type crack healing material, which is able to repair fine cracks, is compacted to secure airtightness of the concrete vacuum tube segment.

Concrete vacuum tube segment for hyper-speed transportation system using ultra-high performance concrete (UHPC), and manufacturing method thereof

Provided are a textile reinforced cement composite for suppressing occurrence of slipping and a crack and a manufacturing method thereof. The textile reinforced cement composite for suppressing occurrence of slipping and a crack can suppress slipping between a textile grid reinforcement and a cement composite by using an angulated filling material mixed therewith when a textile reinforced cement composite having a textile grid reinforcement embedded in a cement composite is manufactured, suppress occurrence of a crack of the cement composite, suppress occurrence of a crack of the cement composite due to a fiber bridging reaction by using organic fiber mixed therewith, induce distribution of fine cracks, suppress degradation of fluidity of the cement composite caused by mixing of the angulated filling material by using a spherical binder and a chemical admixture added thereto, and suppress slipping between the textile grid reinforcement and the cement composite by using a fine powder binder having a predetermined particle size and mixed therewith.

Textile-reinforced cement composite for suppressing occurrence of slipping and crack and method of manufacturing the same

The present invention provides a crack repair material of a concrete vacuum tube segment using ultra-high performance concrete (UHPC) for a hyper-speed transportation system and a crack repairing method for the same capable of, in a case in which a vacuum tube segment of a hyper-speed transportation system, such as the Hyperloop, is manufactured using UHPC, repairing cracks formed in the UHPC vacuum tube segment easily and conveniently using a crack growth prevention material and a patch repair material and capable of immediately repairing cracks formed in the UHPC vacuum tube segment to secure airtightness so that operation of a vacuum pump is minimized and overload of the vacuum pump is prevented.

Crack repair material of concrete vacuum tube segment using ultra-high performance concrete (UHPC) for hyper-speed transportation system, and crack repairing method for the same

Provided are a method of manufacturing a three-dimensional textile reinforcement material and a method of constructing a textile reinforced concrete structure using a three-dimensional textile reinforcement material. A two-dimensional grid is bent into a three-dimensional shape using a two-dimensionally woven or knitted textile grid, and the bent grid is coupled with at least one two-dimensional grid, and thus the three-dimensional textile reinforcement material can be simply and easily formed. The three-dimensional textile reinforcement material can be formed by coating the coupled two-dimensional grid and a three-dimensional grid with a thermosetting resin and curing the coupled grids to support a concrete pouring pressure. The three-dimensional textile reinforcement material is formed in a truss material, and the three-dimensional textile reinforcement material with high bending strength can be manufactured, thus a concrete pouring pressure can be supported when a textile reinforced concrete structure is constructed using the three-dimensional textile reinforcement material.

Method of manufacturing three-dimensional textile reinforcement member and method of constructing textile-reinforced concrete structure using the same

Provided are an anchor pin for placing shotcrete and fixing a textile grid and a method of constructing textile grid reinforced shotcrete using the same, wherein the anchor pin allows a textile grid reinforcement to be precisely disposed at a required position and, when shotcrete is placed, prevents a textile grid reinforcement from moving due to a driving pressure for precise construction so as to increase durability and safety of the concrete structure, allows primary and secondary shotcrete to be constructed while placing thicknesses thereof are visually checked so as to increase precision of construction, and allows the textile grid reinforcement to be disposed and fixed to accurately correspond to a shape of the concrete structure even when a lower portion of a slab, a wall, and a structure with a curved surface, such as a lining of a tunnel, are built.

Anchor pin for placing shotcrete and fixing textile grid and method of constructing textile grid reinforced shotcrete using the same

A method of batch-casting high-fluidity high performance concrete and low-fluidity high performance concrete, wherein the method is capable of batch-casting high-fluidity high performance concrete for forming a girder portion of a bridge and low-fluidity high performance concrete for forming a deck plate portion of the bridge by using a concrete casting apparatus. Accordingly, the construction cost can be reduced and the construction period can be shortened. In addition, because a cold joint does not occur, durability can be improved, and thus the life of the bridge can be increased.

Method for batch casting high-fluidity high-performance concrete and low-fluidity high-performance concrete

Provided are a carbon fiber textile reinforcing material with an anode metal line which can be repaired and reinforced with a high stiffness and non-corrosive carbon fiber textile by disposing a carbon fiber textile reinforcing material with an anodic metal line functioning as a conductor and a reinforcing material on a deteriorated cross-section of concrete, can maximize repair and reinforcement of a reinforced concrete structure by preventing additional corrosion of a concrete embedded reinforcing bar using a sacrificial anode arranged on the carbon fiber textile, can prevent corrosion of an existing reinforced concrete structure and can be used as a reinforcing material and a corrosion preventing material of a new concrete structure, and a method for repairing and reinforcing a reinforced concrete structure using the same.

Carbon fiber textile reinforcing member with anodic metal line and method of repairing and reinforcing concrete structure using the same

Provided are a textile-reinforced concrete structure using a textile grid fixing device and a construction method therefor. A textile grid is precisely disposed at a predetermined position between a mold and a main reinforcing bar using a textile grid fixing device so as to be prevented from being moved by a pouring pressure when concrete is poured, and thus a textile-reinforced concrete structure can be precisely constructed. The textile grid fixing device is fixed to one side of the mold, and the textile-reinforced concrete structure is constructed using the textile grid fixing device such that fine cracks are suppressed from being generated on a surface of concrete. Further, a surface of a concrete structure is protected from an external environment when the textile-reinforced concrete structure is constructed so that a covering thickness of concrete can be reduced, and thus, the textile-reinforced concrete structure can be economically constructed.

Textile-reinforced concrete structure using textile grid fixing apparatus and construction method for the same

Provided are an apparatus for forming non-excavation water and sewage pipe lining for rehabilitation using a textile grid reinforcement material and mortar lining, which allows a textile grid reinforcement material to be continuously disposed and mortar lining to be formed thereon when an old water and sewage pipe is rehabilitated by forming mortar lining in the old water and sewage pipe to fundamentally suppress fine cracks generated on the coated mortar lining, allows the textile grid reinforcement material, to be applied so as to solve a problem of corrosion of the reinforcement material generated when a conventional reinforcing bar or a wire mesh is applied, and in comparison to a conventional method of forming lining of only mortar, allows the textile grid reinforcement material to be applied to reduce a thickness of mortar lining and to perform continuous construction so as to perform economical construction, and a method thereof.

Apparatus for forming non-excavation water and sewage pipe lining for rehabilitation using textile grid reinforcement member and mortar lining, and method thereof

Provided are a highly durable textile reinforcing panel used as a concrete form and a method for constructing a reinforced concrete structure using the same. The highly durable textile reinforcing panel is configured to resist a lateral pressure caused due to a self-load of concrete which is not cured during construction and function as a structure reinforcing material by being integrated with concrete cured after the construction, is integrated with the concrete structure via a textile shear connector formed on a highly durable concrete panel, and allows a lattice-shaped reinforcing material to remarkably increase flexural strength of the highly durable concrete panel, and thus a flexural strength of the entire concrete structure is remarkably increased when the highly durable textile reinforcing panel used as a concrete form is structurally integrated with the concrete structure.

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Gyeonggi-do, South Korea

Gum Sung Ryu