KR100403076B1 - Repaired and Reinforced method and sheet material of concreat structure using sheet - Google Patents

Abstract

The present invention relates to a repair / reinforcement method of a concrete structure using a sheet member and a sheet member thereof, and conventionally, to repair and reinforce damage of reinforced concrete that is peeled / falled off due to various deterioration of an exposed / underwater concrete structure. When patching with general mortar / concrete and epoxy resin mortar, it is reinforced with epoxy resin adhesive on the concrete surface with iron plate or carbon fiber sheet, aramid fiber and glass fiber sheet, so that the properties of concrete and epoxy resin adhesive are different. There is a problem in that the maintenance unit is not integrated and the toxic gas is emitted by the neutralization phenomenon or the fire.

In order to solve the above problems, the present invention repairs a damaged surface 510 of a concrete structure including a ceiling or a floor or a tunnel concrete structure, and a concrete structure such as a bridge, a creek, a port, and a solder by a chipping process and permeability. The aqueous acrylic polymer mortar layer 530 is formed by forming a permeable hardener coating layer 520 through a primer coating process and applying an aqueous acrylic polymer mortar having a high strength (compressive strength of 500 kg / cm 2 bending strength of 100 kg / cm 2 or more). The sheet member layer 540 is composed of a chipping process, a high pressure washing process, a VOC-cutting type epoxy mortar plastering process, and a fiber sheet 200 bonded to silica sand or a garnet by a sheet member bonding process. Alternatively, a pair of clips 321 are formed in a sheet form by bonding a rod 310 bonded with silica sand or a garnet to a clip bracket 320 having equal intervals. In the case of using the formed rod sheet 300 as the sheet member 100, the clip bracket 320 is fixed to the aqueous acrylic polymer mortar layer 530 with a nail and then plastered with aqueous acrylic polymer mortar (RE mortar, G & W mortar). In the process and underwater concrete, the repair / reinforcement part constructed by the aqueous acrylic polymer mortar (RE mortar, G & W mortar) layer 550 by the epoxy mortar plastering process (U & V mortar) in the water-reducing type of VOC can be integrated with the damaged wall concrete structure. The present invention provides a method of repairing / reinforcing concrete structures using sheet members and providing the sheet members.

Description

Repair and reinforcement method of concrete structure using sheet member and its sheet member {Repaired and Reinforced method and sheet material of concreat structure using sheet}

The present invention relates to a repair / reinforcement method of a concrete structure using a sheet member and a sheet member, and particularly, when repairing / reinforcing the exterior of an exposed / invasive concrete structure damaged by degradation or invasion, Chipping process of exposed / invasive concrete structure, permeable primer coating process, aqueous acrylic polymer mortar coating process, sheet member bonding process consisting of fiber sheet including rod sheet, aqueous acrylic polymer The plastering process of mortar (RE mortar, G & W mortar) integrates the exposed / underwater concrete structure and the repair / reinforcement part, so it is easy to repair / reinforce the construction, reducing work time and cost, and the repair / reinforcement part is firm and permanent. Repair / reinforcement method of concrete structure that can be preserved in form, fiber sheet bonded with silica sand or garnet, and sheet form sheet Which is a to provide a sheet member.

In recent years, concrete deterioration such as peeling / falling / abnormal cracks in reinforced concrete structures and construction structures of reinforced concrete, resulting in damage and collapse of reinforced concrete due to the drop in compressive strength of concrete and tensile strength of reinforcing steel. The problem of safety accidents caused by breakage of steel structures due to corrosion of the steel has emerged as a big social problem.

As the deterioration factor / degradation factor of concrete, concrete has strong alkalinity (PH = 12.5), so that steel corrosion does not proceed.

However, due to the penetration of carbon dioxide / acid / chlorine (chlorine ion) into the reinforced concrete structure, alkali aggregate reaction, and shrinkage / expansion under the weather conditions, the neutralization of reinforced concrete proceeds and the steel reinforces corrosion and rusts. do.

In addition, when the rust on the reinforcing bar is cracked in the concrete structure due to the expansion of the rust, the reinforced concrete is damaged and the structure collapses due to the local exposure of peeled / peeled / corroded reinforcement of the reinforced concrete structure.

In addition, as the structural structures of cement concrete including various civil engineering and construction are neutralized by the infiltration of carbon dioxide, the phenomenon of the structural weakening due to the cracking of concrete and the corrosion of reinforcing steel is not only infiltrated with carbon dioxide but also in the cement concrete. In the case of mixed gravel and sand volcanic rock, it is known that the neutralization of cement concrete is accelerated.

In repairing and reinforcing damaged parts damaged by deterioration and corrosion of concrete structures such as mortar and concrete structures such as mortar and concrete, in general, when repairing / reinforcing construction of civil engineering underwater concrete structures, mortar and concrete are used as epoxy resins. Although the reinforcement work is being carried out, the deterioration damaged part and the repair / reinforcement member are not deteriorated in strength and united even after the reinforcement work on the deteriorated concrete structure. There were many problems.

In addition, as a specific example of the conventional repair / reinforcement composition of deteriorated concrete, FRP repair / reinforcement composition is a laminated molded product of a thermosetting resin for low pressure molding, in which glass fiber is the main reinforcement. It should be avoided and is suitable for the protection of concrete to prevent deterioration of the fall prevention of concrete, but the properties of concrete are different from those of concrete, and there is a problem of low adhesion to wet surfaces.

In addition, the composition of non-shrink grout cross-sectional reinforcement is most widely used as a repair method for the walls exposed to rebar due to lack of concrete coating or peeling / falling of concrete due to deterioration of concrete. The material can be used to prevent shrinkage after elapse, but it is not possible to work underwater and does not meet the performance required for reinforcement, and in particular compressive / bending strength and adhesive strength, the most important component as reinforcement, cannot be maintained. There is a problem.

Recently, repair and reinforcement of concrete structures such as mortar and concrete such as mortar and concrete, and repair of cracks with waterproof coatings, transparent gloss finishes, anti-slip repellents and sealing agents to repair and reinforce steel structures such as steel bridges and metal roofs. And water repellents, caulking coatings, admixtures added to impart reinforcement and water resistance, anti-rusting agents and waterproofing agents, coating and adhering agents, anti-rust anti-rust coatings, rust treatment agents, etc. The product is known in the past.

In addition, the conventional structures and structures of mortar concrete, including the various civil engineering and construction, the composition for repairing / reinforcing the steel structure is a coating having a coating property to coat the surface of the structure, or finish additives and structures added to the mortar As a finishing agent to be treated, the cement concrete's facility structure delays the penetration of carbonic acid gas into the air, thereby slowing down the neutralization rate of highly alkaline cement, and maintaining the strength of the cement concrete's facility structure and corrosion of the steel. It is also known to prevent the damage by supplementing the lifespan of facility structures of cement concrete and by providing corrosion resistance by the film formed on the surface of steel structures and metal structures.

In addition, it is known that the effect of delaying neutralization when the deterioration of concrete is accelerated due to the use of gravel and sand of volcanic rock is excellent. However, the composition thereof is expensive and appropriate products are selected according to the deterioration state of the structure to be repaired or reinforced. It is difficult to install and select these products in order, which makes the economic problems a heavy burden.

The present invention is to provide a repair and reinforcement method and a sheet member of the concrete structure using a sheet member that can repair / reinforce the damaged part in a simple and easy way when the exposed / invaded concrete structure is damaged.

In order to achieve the object of the present invention, to solve the problems of conventional concrete structures such as cement mortar, repair / reinforcement / reinforcement products (composition) and the construction method, adhesive strength / compression strength / bending strength / waterproof / Repair / reinforcement materials with improved abrasion resistance, gloss resistance, activity resistance, anticorrosive properties, chipping process of exposed / underwater concrete structures, primer coating process, aqueous acrylic polymer mortar coating process, sheet The repair / reinforcement part is firmly secured by integrating the exposed / invasive concrete structure and the repair / reinforcement part by the sheet member bonding process including the rod sheet on the top and the fiber sheet and the plastering process of the aqueous acrylic polymer mortar (RE mortar, G & W mortar). As it is permanent and easy to install, it is possible to reduce maintenance / reinforcement cost and air.

Another object of the present invention is a fiber sheet braided by aramid fiber (Aramid fiber), carbon fiber (glass fiber) so that the repair / reinforcement of the concrete structure of exposure / invasion is firmly built and easy to construct Impregnated with epoxy resin / acrylic resin material, and then the fiber sheet or carbon fiber rod composed by bonding silica sand or garnet with different particle size in the state before curing is surrounded by aramid fiber or glass fiber (rod) is impregnated with epoxy resin / acrylic resin material, and then repaired through the sheet member composed of rod sheet formed by bonding silica sand or garnet with different particle size in the state before curing. It is to provide a sheet member consisting of a fiber sheet including a rod sheet that the reinforcement is firm and can be stored in a permanent form.

1 is an exemplary view of a fiber sheet constituting a sheet member of the present invention

Figure 2 is another exemplary view of the fiber sheet constituting the sheet member of the present invention

Figure 3 is another exemplary view of a fiber sheet constituting the sheet member of the present invention

Figure 4 is another exemplary view of the fiber sheet constituting the sheet member of the present invention

Figure 5 is an enlarged view of a portion of the sheet member of the present invention

Figure 6 is an illustration of the processing process of the sheet member of the present invention

Figure 7 is an exploded perspective view of the rod seat constituting the sheet member of the present invention

8 is a side view of a rod seat constituting the sheet member of the present invention;

9 is an exemplary view of a concrete structure repaired / reinforced by the present invention

10 is another exemplary view of a concrete structure repaired / reinforced by the present invention

* Symbol description for main part of drawing *

100; seat member 110; fiber member

111; cross-sectional tissue 112; unilateral tissue

113; cross equilibrium 114; unilateral equilibrium

115; space 120; epoxy resin / acrylic resin

121; silica sand 122; garnet

200; fiber sheet 300; rod sheet

310; Rod 320; Clip Bracket

321; Clip 322; Hole

400; sheet member manufacturing apparatus 410; supply unit

420; epoxy resin / acrylic resin impregnation part 430; silica sand / garnet

440; silica sand / garnet bonding portion 450; drying portion

460; sheet member winding 510; damaged surface

520; impermeable hardener coating layer 530; aqueous acrylic polymer mortar layer

540; sheet member layer 550; aqueous acrylic polymer mortar layer

The present invention relates to a sheet member bonding process consisting of a fiber sheet including a chipping process of a concrete structure of exposure / invasion, a process of applying a permeable hardener, a coating process of an aqueous acrylic polymer mortar, and a rod-shaped sheet. It is characterized by the repair / reinforcement method of the concrete structure using the sheet member which can be constructed to integrate the exposed / invasive concrete structure and the repair / reinforcement part by the plastering process of acrylic polymer mortar (RE mortar, G & W mortar).

Another feature of the present invention is to aramid fiber (carbon fiber), glass fiber (carbon fiber) in the sheet member bonding process including the rod-like material on the sheet during the repair / reinforcement method of the concrete structure using the sheet member After impregnating the rod surrounded by aramid fiber or glass fiber with braided fiber sheet or carbon fiber rod in epoxy resin / acrylic resin material, silica sand or garnet with different particle size before curing ) Is also a sheet member composed of a sheet-like rod sheet formed by adhering a).

Next, the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 is an exemplary view showing a fiber sheet constituting the sheet member 100 of the present invention, the fiber sheet 110 constituting such a sheet member 100 is cross-sectional knitted structure 111, one-sided piece It is possible to provide a space 115 in the network tissue fiber sheet such as the tissue 112, the cross-sectional flat tissue (cord weaving) 113, and the unilateral flat tissue (cord weaving) 114.

5 is a partially enlarged view of the sheet member 100 of the present invention, after impregnating the fiber sheet 110 illustrated in FIGS. 1 to 4 in the epoxy resin / acrylic resin material 120 in a state before curing A sheet member 100 composed of a fiber sheet is manufactured by bonding silica sand 121 or garnet 122 having different particle sizes.

6 is an exemplary view of the manufacturing apparatus of the sheet member 100, the sheet member manufacturing apparatus 400 is a supply part 410 of the fiber sheet, epoxy resin / acrylic resin impregnation part 420, fine silica (silica) The fiber sheet 200 comprises a sand or garnet adhesive part 430, a coarse silica sand or a garnet adhesive part 440, a drying part 450, and a sheet member winding part 460. ) Is installed in the supply unit 410 and the fiber sheet 200 is transferred by the full automation, and the epoxy sheet / acrylic resin is impregnated via the impregnating unit 420, and then through the adhesive units 430 and 440. The coarse silica sand or garnet is bonded to the epoxy resin / acrylic resin impregnated in the fiber sheet 200 and hardened while passing through the drying unit 450. According to the process of reaching the sheet member winding portion 460, the quality is uniform and excellent. The root member 100 is a mass-produced at a low production cost by the electronic moving image.

FIG. 7 is an exploded perspective view of a rod sheet, which is a sheet member used in repair / reinforcement of a concrete structure of the present invention. The rod sheet 300 includes a rod 310 surrounded by carbon fiber rods with aramid fibers or glass fibers. ) And a pair of clips 321 and holes (322) is composed of an assembly configuration of the clip bracket 320 is formed at equal intervals, wherein the rod 310 is also an epoxy resin / acrylic resin ( After impregnating 120, the silica sand 121 or the garnet 122 having different particle sizes is bonded in a state before curing.

In this way, the rod 310 to which the silica sand 121 or the garnet 122 is bonded may be prefabricated to the clip 321 formed at equal intervals on the clip bracket 320. As illustrated in FIG. 8, the rod sheet 300 may be manufactured, and the rod sheet 300 used as the fiber sheet 200 may be configured in the sheet member bonding process of the repair / reinforcement method of the present invention.

9 is an exemplary view of a wall concrete structure including a ceiling / floor repaired / reinforced by the present invention, such a repair / reinforcement method of the wall concrete structure including a ceiling / floor is damaged surface of the damaged concrete structure The 510 is chipped by a chipping process, the permeable curing agent coating layer 520 is formed by the permeable curing agent coating process, and the aqueous acrylic polymer mortar layer 530 is formed by the coating process of the aqueous acrylic polymer mortar. The sheet member layer 540 is formed by bonding the fibrous sheet 200 in the sheet member 100 by the sheet member bonding process, and the aqueous acrylic polymer by the plastering process of the aqueous acrylic polymer mortar (RE mortar, G & W mortar). Integrates with damaged wall concrete structure, which has a repair / reinforcement part constructed of mortar (RE mortar, G & W mortar) layer 550 (compressive strength 500kgf / cm3, bending strength 150kgf / cm3, adhesive strength 25kgf / cm3 or more) Can be installed The maintenance / reinforcement portion has a solid characterized by the maintenance / reinforcement of the concrete structure using the sheet members to reduce the maintenance / reinforcement costs and air to permanent, the construction is simple.

In addition to repair / reinforcement construction of damaged wall concrete structures as described above, repair / reinforcement construction of damaged ceiling concrete structures, repair / reinforcement construction of damaged bridge concrete structures, repair / reinforcement construction of damaged composite concrete structures, damaged port concrete structures Repair / reinforcement work, repair / reinforcement work of damaged tunnel concrete structure, repair / reinforcement work of damaged solder concrete structure.

FIG. 10 is an exemplary view of a tunnel wall concrete structure repaired / reinforced by the present invention. The repair / reinforcement method of the tunnel concrete structure trims the damaged surface 510 of the damaged tunnel surface concrete structure by a chipping process. The permeable curing agent (primer) coating process to form a permeable curing agent (primer) coating layer 520, and the aqueous acrylic polymer mortar layer 530 is formed by the application process of the aqueous acrylic polymer mortar, and the sheet member (100) As an example of constructing the rod sheet 300 as the rod sheet 300, the rod-shaped sheet 300 formed of the rod 310 to which the silica sand 121 or the garnet 122 is bonded and the clip bracket 320 are assembled. After fixing the clip bracket 320 to the aqueous acrylic polymer mortar layer 530, the silica sand 121 or the garnet 122 having different particle sizes by the epoxy resin / acrylic resin 120 was fixed. Attached to the rod 310 The clip 321 of the lip bracket 320 is inserted to form the rod sheet member layer 540, and the aqueous acrylic polymer mortar (RE mortar, G & W mortar) is applied by the plastering process of the aqueous acrylic polymer mortar (RE mortar, G & W mortar). The repair / reinforcement part constructed by the floor 550 can be integrated with the damaged wall concrete structure, so that the repair / reinforcement part of the concrete tunnel is firm and permanent and easy to install, thus reducing the repair / reinforcement cost and air. It is characterized by the repair / reinforcement method of the used concrete structure.

Here, as well as repair / reinforcement of damaged tunnel concrete structures, repair / reinforcement of damaged wall concrete structures, repair / reinforcement of damaged ceiling concrete structures, repair / reinforcement of damaged bridge concrete structures, damaged fuecheon Repair and reinforcement of concrete structures, repair and reinforcement of damaged port concrete structures, and repair and reinforcement of damaged solder concrete structures can also be carried out.

The present invention is to repair and reinforce damaged or predetermined parts of exposed / invasive concrete structures. Chipping process, impregnated primer coating process, aqueous acrylic polymer mortar coating process, sheet member or comb rod ( In the rod member bonding process, a fiber sheet or carbon fiber rod braided with aramid fiber, carbon fiber glass fiber, or carbon fiber rod is surrounded by aramid fiber or glass fiber as a sheet member. After impregnating with epoxy resin / acrylic resin, use a rod sheet made by bonding silica sand or garnet with different particle size in the state before hardening, and using aqueous acrylic polymer mortar (RE mortar, G & W mortar) By the plastering process of), the concrete structure of exposure / invasion and the repair / reinforcement part are integrated, so the repair / reinforcement part is firm and permanent, and the construction is easy to reduce repair / reinforcement cost and air. The big difference will be.

Claims (9)

Chipping process to polish damaged parts of exposed / invasive (underwater) civil engineering (building) / concrete structures, permeability hardener application process, waterborne acrylic polymer mortar application process, rod member joining process to fiber sheet or road sheet, aqueous acrylic A repair / reinforcement method for concrete structures using sheet members characterized by the construction of exposed / invasive concrete structures and repair / reinforcement parts by the plastering process of polymer mortar (RE mortar, G & W mortar). The method of claim 1, wherein the permeable primer coating layer 520 is formed by a chipping process and a permeable primer coating process to polish the damaged surface 510 of the repair-reinforced concrete structure, and to apply the aqueous acrylic polymer mortar. The aqueous acrylic polymer mortar layer 530, and the sheet member or rod 310 is bonded to the fiber sheet 200 in the sheet member 100 by a sheet member bonding process to the clip bracket 320 Repair and reinforce the concrete structure using the sheet member, characterized in that to build the sheet member layer 540 of the rod sheet 300 to assemble in the structure and to build an aqueous acrylic polymer mortar layer 550 After impregnating the fiber sheet 110 in the epoxy resin / acrylic resin material 120, the sheet characterized in that the sheet member is formed by bonding the silica sand 121 or the garnet (122) having a different particle size in the state before curing Seat member for repair / reinforcement of concrete structure using member. Supply part 410 of the fiber member 200, epoxy resin / acrylic resin impregnation part 420, fine silica sand or garnet bonding portion 430, coarse silica sand or garnet bonding portion 440, drying portion 450, sheet Sheet member for repair / reinforcement of a concrete structure using a sheet member, characterized in that the fabric sheet is manufactured by a sheet member manufacturing apparatus consisting of a member winding unit (460). A pair of clips 321 and holes 322 are formed by enclosing carbon fiber rods with aramid fibers or glass fibers in the clip bracket 320 formed at equal intervals, and the silica sand by epoxy resin / acrylic resin 120 ( The sheet member for repair / reinforcement of the concrete structure using a sheet member, characterized in that the one-sided rod sheet 300 is formed by coupling the rod 310 attached to the circumference 121 or the garnet 122 in an assembly configuration. 4. The cross-shaped knit structure 111 according to claim 3, wherein the fiber member 110 constituting the sheet member 100 is bonded to the silica sand 121 or the garnet 122 by the epoxy resin / acrylic resin material 120. Seat member for repair / reinforcement of the concrete structure using the sheet member characterized in that). 4. The unidirectional knitted structure (112) according to claim 3, wherein the fiber member (110) constituting the sheet member (100) by adhering the silica sand (121) or the garnet (122) by the epoxy resin / acrylic resin material (120). Seat member for repair / reinforcement of the concrete structure using the sheet member characterized in that). According to claim 3, wherein the epoxy resin / acrylic resin 120 is bonded to the silica sand (121) or the garnet (122) to form a cross member of the fiber member 110 constituting the sheet member (100) Sheet member for repair / reinforcement of the concrete structure using a sheet member characterized in that (113). The method of claim 3, wherein the fiber member 110 constituting the sheet member 100 by adhering the silica sand 121 or the garnet 122 by the epoxy resin / acrylic resin material 120 (cord cloth) Seat member for repair / reinforcement of the concrete structure using a member characterized in that (114).