EP1346118A1 - Panneau composite permettant de reparer, renforcer un corps de beton et procede d'utilisation de ce panneau - Google Patents

Panneau composite permettant de reparer, renforcer un corps de beton et procede d'utilisation de ce panneau

Info

Publication number
EP1346118A1
EP1346118A1 EP01981140A EP01981140A EP1346118A1 EP 1346118 A1 EP1346118 A1 EP 1346118A1 EP 01981140 A EP01981140 A EP 01981140A EP 01981140 A EP01981140 A EP 01981140A EP 1346118 A1 EP1346118 A1 EP 1346118A1
Authority
EP
European Patent Office
Prior art keywords
panel
concrete
lightweight
precast concrete
reinforced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01981140A
Other languages
German (de)
English (en)
Other versions
EP1346118A4 (fr
Inventor
Sang-Tae 105-1902 Daechang-Apt. PARK
Sang-Ho 101-806 Oyanghilltown-Apt. AHN
Baik-Soon 17-302 Samik-Apt. CHO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maintenance Professional Co Ltd
Taechang sms Co Inc
Original Assignee
Maintenance Professional Co Ltd
Taechang sms Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR10-2000-0064018A external-priority patent/KR100367096B1/ko
Priority claimed from KR1020000069466A external-priority patent/KR100361960B1/ko
Priority claimed from KR10-2001-0004044A external-priority patent/KR100489515B1/ko
Priority claimed from KR10-2001-0026987A external-priority patent/KR100433379B1/ko
Priority claimed from KR10-2001-0041672A external-priority patent/KR100404538B1/ko
Application filed by Maintenance Professional Co Ltd, Taechang sms Co Inc filed Critical Maintenance Professional Co Ltd
Publication of EP1346118A1 publication Critical patent/EP1346118A1/fr
Publication of EP1346118A4 publication Critical patent/EP1346118A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
    • E01C7/14—Concrete paving
    • E01C7/147—Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
    • E04G2023/0251—Increasing or restoring the load-bearing capacity of building construction elements by using fiber reinforced plastic elements

Definitions

  • the present invention relates to a panel for repairing and reinforcing a concrete body, a multi-purpose anchor, an anchor for level adjustment and injection and a method for repairing and reinforcing the concrete body using the same. More particularly, the present invention relates to a panel for repairing and reinforcing a concrete body, a multi-purpose anchor, an anchor for level adjustment and injection and a method for repairing and reinforcing the concrete body using the same, which can connect adhesives and anchors at weak parts of the concrete body, which is neutralized, aged, deteriorated, cracked due to water leakage, or segregated, or at parts requiring the repair and reinforcement due to a change in use environment.
  • a reinforced concrete body is semi- permanent, but the reinforced concrete body is aged and deteriorated due to various causes, such as neutralization, corrosion of reinforced steels, exfoliation of an outer layer due to dryness, contraction and expansion, error in design, false construction, fatigue load, change in use environment, as time passes and the use environment is changed, and thereby the concrete body needs repair and reinforcement. So, new materials and new construction methods for restraining the progress of the deterioration in structure and repairing and reinforcing the concrete body have been studied and developed.
  • the carbon fiber sheet reinforcing method, the glass fiber sheet reinforcing method and the aramide fiber sheet reinforcing method are performed in such a manner that a concrete body to be reinforced is surface-treated, primer is coated on the surface, the surface is leveled by epoxy putty agent, and the fiber sheet (carbon fiber sheet, glass fiber sheet or aramide fiber sheet) is impregnated in the concrete body and adhered to the concrete body by epoxy resin (for adhesion and impregnation).
  • Such reinforcing method using the fiber sheet is lightweight, and has good operation efficiency, anticorrosion, high strength, high elasticity coefficient, salt tolerance and chemical resistance.
  • the reinforcing method using the fiber sheet has several problems that it is very weak in heatproof and fireproof, and thereby poisonous gas is generated and the reinforcing effect drops rapidly to cause loss of lives and properties when there is a fire.
  • the main process ofthe reinforcing method using the reinforced fiber is the impregnation of the reinforced fiber, but in fact, it is difficult to perfectly impregnate the reinforced fiber due to a difficult condition in a construction site, and the reinforcing effect and realization of performance depend on the manpower's technical level in the construction site. Furthermore, it is necessary to perform a repetitive lamination process to secure a proper reinforcing strength.
  • the steel plate adhering method is a construction method performed in such a manner that a concrete body to be reinforced is surface-treated, steel plates are mounted and sealed after an anchoring work and a welding work, and epoxy resin is injected and adhered.
  • the steel plate adhering method has several advantages that materials can be easily bought and properties of the materials can be surely shown.
  • the method has several disadvantages that it is difficult to carry and handle the materials and to supervise safety because the steel plates are heavy (generally, steel plate of 4.5mm or more is used to secure required strength), and there is a danger of fire due to the use of fire for welding or others.
  • the method has a load burden of the reinforced concrete body due to an increase of excessive dead load after the reinforcement, corrosion ofthe steel plates, and weak thermal efficiency in fireproof and heatproof.
  • panels are fixed with anchors, and gaps formed between the panels and a concrete body are filled with filler such as thermosetting resin.
  • filler such as thermosetting resin.
  • various materials besides the anchors are mounted, that is, spacers are mounted at regular intervals to form gap uniformly, injection holes are formed to inject the filler and air discharge holes are formed to discharge the inside air to the outside while the filler is inserted.
  • the spacers, the injection holes and the air discharge holes must be mounted at several portions of the panel, it takes much time to mount them, and thereby the panel may be damaged and polluted and the filler does not sealably fill the gaps to cause a drop of the reinforcing effect because it is very difficult, in installation structure, to discharge the inside air ofthe anchor hole.
  • most of the existing anchors are made of metal, if the wet concrete body is reinforced, it becomes rusty as time passes, and thereby its performance is deteriorated and the outward appearance becomes bad.
  • the patching and section restoring methods are performed in such a manner that weak parts ofthe concrete body is dug and removed, an anticorrosive treatment is performed if reinforced steels are oxidized, repairing materials are inserted into cracked portions to prevent the reinforced steels from being contacted with air or water, the removed portions are plastered with epoxy mortar, non-contracted concrete and various polymer cement mortar several times, and the section is restored.
  • various kinds of materials and methods have been developed, for example, a polyurethane injection method, an epoxy injection method for moistening, a micro-cement injection method, a section restoring method using epoxy group mortar, a section restoring method using various polymer cement mortars such as acryl group high intensity mortar, and so on.
  • the conventional methods has a limitation in adhesive strength between the existing concrete body and the surface restored in section. Additionally, as time passes, the exfoliation and cracks are generated again and air and water flow into the exfoliated and cracked surface, and thereby the concrete body is returned into the previous condition (e.g., the reinforced steels are corroded).
  • this inventor has developed a panel for repairing and reinforcing a concrete body, a multi-purpose anchor, an anchor for level adjustment and injection and a method for repairing and reinforcing the concrete body using the same to improve the conventional method for repairing and reinforcing the concrete body.
  • a composite reinforced panel in which a reinforced fiber sheet is composed to a steel plate, and a method for repairing and reinforcing using it capable of securing safety of a concrete body.
  • FIG. 1 illustrates a sectional view of a detailed example of a composite panel for reinforcing a concrete body according to the present invention
  • FIG. 2 illustrates a flow chart showing a manufacturing method of the composite panel of FIG. 1;
  • FIG. 3 illustrates a sectional view of another detailed example of a composite panel for reinforcing a concrete body according to the present invention
  • FIG. 4 illustrates a flow chart showing a manufacturing method of the composite panel of FIG. 3;
  • FIG. 5 illustrates a schematic view of a manufacturing process and a structure of a lightweight precast concrete panel according to the present invention
  • FIG. 6 illustrates a flow chart of the manufacturing process of the lightweight precast concrete panel according to the present invention
  • FIG. 7 illustrates a schematic view of a manufacturing process of a lightweight precast concrete composite reinforced panel according to the present invention
  • FIG. 8 illustrates a brief perspective view of the lightweight precast concrete composite reinforced panel for repairing a concrete body according to the present invention
  • FIG. 9 illustrates an elevation view and a sectional view of an anchor for adjusting level of panel and injecting
  • FIG. 10 illustrates a view showing a state that the anchor for adjusting level of panel and injecting is connected with an injection pipe and a clip.
  • FIG. 11 illustrates an elevation view and a partially sectional view of an insert and an expansion hole according to the present invention
  • FIG. 12 illustrates an elevation view and a partially sectional view of a bolt and an injection pipe according to the present invention
  • FIG. 13 illustrates a schematic view showing a state that a lower portion of a beam is reinforced using the lightweight precast concrete composite reinforced panel
  • FIG. 14 illustrates a schematic view showing a state that a lower portion and a side of a beam is reinforced using the lightweight precast concrete composite reinforced panel
  • FIG. 15 illustrates a schematic view showing a state that a damaged part of the concrete road is repaired using the panel for repairing the concrete body and the anchor for level adjustment and injection;
  • FIG. 16 illustrates a flow chart of an adhesion type reinforcing method, which is a method for reinforcing the concrete body using the composite panel for reinforcing the concrete body according to the present invention
  • FIG. 17 illustrates a schematic view showing a state that the damaged part of the concrete road is repaired using the panel for repairing the concrete body and a multi-purpose anchor.
  • FIG. 1 illustrates a sectional view of a detailed example of a composite panel for reinforcing a concrete body according to the present invention
  • FIG. 2 illustrates a flow chart showing a manufacturing method of the composite panel of FIG. 1.
  • the composite panel for reinforcing the concrete body includes: a steel plate 510 of a prescribed size; an impregnable adhesion layer 520' formed on an upper surface of the steel plate 510; a reinforced fiber 530 mounted on the upper surface of the steel plate 510 and impregnated and adhered by the impregnable adhesion layer 520'; and powder 540 sprayed on the upper surface ofthe steel plate 510 and impregnated and adhered on the surface of the impregnable adhesion layer 520'.
  • the manufacturing method of the composite panel includes the steps of: forming the impregnable adhesion layer 520' on a surface of the steel plate 510 cut in a prescribed size; impregnating and adhering the reinforced fiber 530 on the surface of the steel plate 510, on which the impregnable adhesion layer 520' is formed; spraying, impregnating and adhering the powder 540 on the surface of the steel plate 510 and the reinforced fiber sheet layer 530; and hardening the impregnable adhesion layer 520' formed in the second step.
  • a sandwich type composite panel is manufactured in such a manner that reinforced fibers are impregnated and adhered to both surfaces of a steel plate and then powder is sprayed and adhered.
  • the composite reinforced panel for reinforcing the concrete body further includes: an adhesion layer formed on a lower surface of the steel plate of the composite panel (see FIGS, la and lb); and a lightweight precast concrete panel 550 of a prescribed size adhered on the lower surface of the steel plate by the adhesion layer, thereby increasing reinforcing power and fireproof property.
  • an adhesion layer formed on a lower surface of the steel plate of the composite panel (see FIGS, la and lb); and a lightweight precast concrete panel 550 of a prescribed size adhered on the lower surface of the steel plate by the adhesion layer, thereby increasing reinforcing power and fireproof property.
  • the lightweight precast concrete panel 550 another precast concrete panel using a general aggregate may be used (see FIG. 5).
  • the composite panel for reinforcing the concrete body of FIGS, la and lb is cut in the same size as the lightweight precast concrete panel to be connected with the lightweight precast concrete panel, or cut larger than the lightweight precast concrete panel and has a protrusion at one side of four sides, two protrusions at opposite sides, three protrusions at three sides except one side, or four protrusions at all sides to be connected with the lightweight precast concrete panel. It is to increase reinforcing effect by connecting the adjacent composite panels through the composite panel of FIGS, la and lb. It will be appreciated that another precast concrete panel using a general aggregate may be used instead ofthe lightweight precast concrete panel 550.
  • the composite panel for reinforcing the concrete body may include: a reinforced fiber of a prescribed size; an impregnable adhesion layer formed on an upper surface ofthe reinforced fiber; a steel plate mounted on the upper surface of the reinforced fiber and impregnated and adhered by the impregnable adhesion layer; and powder sprayed, impregnated and adhered on the upper surface of the steel plate. Additionally, the composite reinforced panel for reinforcing the concrete body further includes: an adhesion layer formed on a lower surface of the reinforced fiber of the composite panel for reinforcing the concrete body; and a lightweight precast concrete panel of a prescribed size mounted on the lower surface of the reinforced fiber and adhered by the adhesion layer, thereby increasing reinforcing power and fireproof property.
  • the composite panel (including: a reinforced fiber of a prescribed size; an impregnable adhesion layer formed on an upper surface of the reinforced fiber; a steel plate mounted on the upper surface of the reinforced fiber and impregnated and adhered by the impregnable adhesion layer; and powder sprayed, impregnated and adhered on the upper surface of the steel plate) is cut in the same size as the lightweight precast concrete panel to be connected with the lightweight precast concrete panel, or cut larger than the lightweight precast concrete panel and has a protrusion at one side of four sides, two protrusions at opposite sides, three protrusions at three sides except one side, or four protrusions at all sides to be connected with the lightweight precast concrete panel. It is to increase reinforcing effect by connecting the adjacent composite panels through the composite panel of FIGS, la and lb. It will be appreciated that another precast concrete panel using a general aggregate may be used instead of the lightweight precast concrete panel
  • the composite panel for reinforcing the concrete body may include: an upper steel plate of a prescribed size; a lower steel plate of a prescribed size; an impregnable adhesion layer formed on an upper surface of the upper steel plate; a reinforced fiber mounted on the upper surface of the upper steel plate and impregnated and adhered by the impregnable adhesion layer; an adhesion layer formed on an upper surface of the reinforced fiber; a lower steel plate adhered by the adhesion layer formed on the upper surface of the reinforced fiber; an adhesion layer formed on the surfaces of the upper and lower steel plates; and powder sprayed and adhered on the adhesion layer formed on the surfaces of the upper and lower steel plates.
  • the composite reinforced panel for reinforcing the concrete body further includes: an adhesion layer formed on a lower surface of the lower steel plate; and a lightweight precast concrete panel of a prescribed size adhered on the lower steel plate by the adhesion layer, thereby increasing reinforcing power and fireproof property.
  • the composite panel including: an upper steel plate; a lower steel plate; an impregnable adhesion layer formed on an upper surface of the upper steel plate; a reinforced fiber mounted on the upper surface of the upper steel plate and impregnated and adhered by the impregnable adhesion layer; an adhesion layer formed on an upper surface of the reinforced fiber; a lower steel plate adhered by the adhesion layer formed on the upper surface of the reinforced fiber; an adhesion layer formed on the surfaces of the upper and lower steel plates; and 5 powder sprayed and adhered on the adhesion layer formed on the surfaces of the upper and lower steel plates) is cut in the same size as the lightweight precast concrete panel to be connected with the lightweight precast concrete panel, or cut larger than the lightweight precast concrete panel and has a protrusion at one side of four sides, two protrusions at opposite sides, three protrusions at three sides
  • the composite panel for reinforcing the concrete body may include: a steel plate of a prescribed size; an impregnable adhesion layer formed on an upper surface of the steel plate; an upper reinforced fiber mounted on the upper surface ofthe steel plate and impregnated and adhered by the impregnable adhesion layer;
  • the composite reinforced panel for reinforcing the concrete body further includes: an adhesion layer formed on a lower surface of the lower reinforced fiber; and a lightweight precast concrete panel mounted on the lower portion of the lower reinforced fiber and adhered by the adhesion layer, thereby increasing reinforcing power and fireproof property.
  • the composite panel (including: a steel plate; an impregnable adhesion layer formed on an upper surface of the steel plate; an upper reinforced fiber mounted on the upper surface of the steel plate and impregnated and adhered by the impregnable adhesion layer; powder sprayed, impregnated and adhered on an upper surface of the upper reinforced fiber; an impregnable adhesion layer formed on a lower surface ofthe steel plate; a lower reinforced fiber mounted on the lower surface of the steel plate and impregnated and adhered by the impregnable adhesion layer; and powder sprayed, impregnated and adhered on a lower surface of the lower reinforced fiber) is cut in the same size as the lightweight precast concrete panel to be connected with the lightweight precast concrete panel, or cut larger than the lightweight precast concrete panel and has a protrusion at one side of four sides, two protrusions at opposite sides, three protrusions at three sides except one side, or
  • the steel plate 510 is one of steel plates, which has good flexural strength and is generally used in steel plate reinforcing methods, and can be adjusted in thickness according to intensity of the concrete body to be reinforced. That is, because the steel plate 510 is reinforced with the reinforced fiber 530, which has excellent tension strength and elasticity coefficient, laminated steel plates of 1mm or less can be used.
  • the steel plate 510 may have a plurality of anchor holes 511.
  • the impregnable adhesion layer 520' is formed by coating impregnable adhesive on the upper surface of the steel plate.
  • resin for the exclusive use of impregnation and adhesion such as epoxy resin for impregnation and adhesion, which has good adhesive force to the steel plate and good strength and in which the reinforced fiber is easily impregnated, is proper.
  • the impregnable adhesion layer 520 serves to coat the surface of the steel plate 510 to prevent corrosion ofthe steel plate 510 and improve acid-proof property.
  • the reinforced fiber 530 is mounted on the upper surface of the steel plate 510 and impregnated and adhered by the impregnable adhesion layer 520' to reinforce the steel plate 510.
  • the reinforced fiber is made by selecting and composing at least one or more of carbon fiber, glass fiber and aramide fiber, which have high tension strength, good elasticity coefficient and durability.
  • the reinforced fiber 530 can be laminated into several layers according to required strength of the concrete body to be reinforced. When the reinforced fiber 530 is stacked into several layers, the steps of forming the impregnable adhesion layer 520' and impregnating and adhering the reinforced fiber 530 are repeated while a worker pays attention to remove bubbles for perfect impregnation.
  • the steel plate 510 serves to reinforce against bending or shearing
  • the reinforced fiber 530 serves to reinforce tension of the steel plate to correspond to high tension force, and thereby the concrete body to be reinforced can be completely reinforced against the bending, shearing and tension and prevent brittle break of the concrete body due to lack of softness, which is one of main disadvantages of the conventional reinforcing method using the reinforced fiber. Therefore, the composite panel according to the present invention can secure safety sufficiently.
  • the powder 540 is sprayed, impregnated and adhered on the surface of the impregnable adhesion layer 520' before the impregnable adhesion layer 520' is hardened.
  • the powder 540 increases the adhesive force with the adhesion resin by making the surface of the composite panel rough, thereby helping the composite panel to be integrated with the concrete body.
  • FIG. 3 illustrates a sectional view of another detailed example of a composite panel for reinforcing a concrete body according to the present invention
  • FIG. 4 illustrates a flow chart showing a manufacturing method of the composite panel of FIG. 3.
  • a precast concrete panel is applied to increase a fireproof property of the composite panel 560.
  • the composite panel includes: a precast concrete panel 550 of a prescribed size; an adhesion layer 520 formed on an upper surface ofthe precast concrete panel 550; a steel plate 510 mounted on the upper surface of the precast concrete panel 550 and adhered by the adhesion layer 520; an adhesion layer 520 formed on an upper surface of the steel plate 510; and powder 540 sprayed on the upper surface ofthe steel plate 510 and adhered by the adhesion layer 520.
  • the steel plate 510 is the same as the first example, and the adhesion layer 520 is to adhere the steel plate 510 and the precast concrete panel 550 to each other.
  • the steel plate 510 is formed by coating epoxy resin for adhesion.
  • the precast concrete panel 550 serves to reinforce by being adhered with the steel plate 510 by the adhesion layer 520, and forms a finish surface when finished composite panel 562 is applied as a panel for reinforcing the concrete body. Because the precast concrete panel 550 is made of the same material as the concrete body to be reinforced and forms a surface cover of the steel plate 510, it is still better in fireproof than the panel, which consists of the steel plate and the reinforced fiber, and has a good finishing effect. Because the lightweight and fireproofing properties are important factors of the reinforcing panel, it is more effective to use the lightweight precast concrete panel 550.
  • FIG. 5 illustrates a schematic view of a manufacturing process and a structure of the precast concrete panel 110 formed by impregnating a lightweight concrete layer 111, an inorganic element group fiber sheet layer and a water soluble cement group or polymer group resin layer.
  • the lightweight concrete layer 111 is poured after made by mixing cement, inorganic group porous lightweight aggregate and water using an electrical hand mixer or a mortar mixer.
  • the inorganic porous lightweight aggregate is mixed with cement to be used as the aggregate and lightweight.
  • the mixed rate of the cement and the inorganic porous lightweight aggregate can be changed.
  • the inorganic porous lightweight aggregate is perlite
  • the mixed rate of the cement to the inorganic porous lightweight aggregate is within the range of 5% ⁇ 80% by weight and the panel can be adjusted within the range of the mixed rate in consideration of the required strength and heatproof property of the panel.
  • the panel generally has proper fireproof property and strength within the mixed rate of about 20%.
  • the inorganic group fiber sheet layer 112 is a reinforced inorganic group fiber mesh (it is made in such a manner that inorganic group fiber is impregnated into thermosetting synthetic resin and silica sands or blast furnace steel slag are scattered evenly and then hardened), and located within the lightweight concrete layer 111.
  • the inorganic group fiber sheet layer 112 serves to reinforce tension force of the lightweight concrete panel 110 and can form one layer or several layers.
  • the inorganic group fiber sheet layer 112 if the inorganic group fiber sheet alone is contained in the panel 110, an upper layer and a lower layer of the panel 110 are exfoliated and separated from the inorganic group fiber sheet layer 112. Therefore, if the reinforce inorganic group fiber sheet is mounted, the exfoliation and separation can be prevented.
  • the micro-cement serves to reinforce the inorganic fiber sheet.
  • fine powder of the inorganic group porous lightweight aggregate is impregnated to reinforce the adiabatic effect of the panel.
  • water soluble cement group, polymer cement group or polymer group resin is a basal plate.
  • the panel 110 made through the above process goes through a natural cure and a forced cure (steam cure) in order, and then the lightweight precast concrete panel 110 is finished.
  • FIG. 6 illustrates a flow chart of a manufacturing process of another lightweight precast concrete panel 410 having reinforced glass fiber mesh stacked between the lightweight concrete layers 411.
  • the lightweight precast concrete panel 410 is finished in such a manner that lightweight aggregate, such as bony coal, and Portland cement are sufficiently mixed according to a proper mixing rate, predetermined amount of water is added, lightweight concrete sufficiently mixed by the mortar mixer is first poured to 1/3 of the thickness of the panel, a reinforced glass fiber mesh is mounted on the surface of the first poured lightweight concrete layer 411, and instantly, the lightweight concrete is second poured and cured (natural cure and steam cure).
  • the reinforced glass fiber mesh is manufactured in such a manner that a glass fiber mesh 412 for reinforcement is impregnated into synthetic resin and silica sands or blast furnace steel slag are scattered evenly and hardened.
  • the glass fiber mesh 412 is in the form of a net having wider intervals between fibers than general fiber sheet, and reinforces bending and tension force of the lightweight concrete.
  • the silica sand or blast furnace steel slag 430 serves to improve adhesive force between the reinforced glass fiber mesh 412 and the lightweight concrete 411. Therefore, the lightweight precast concrete panel 410 according to the present invention has completely integrated components, and thereby the glass fiber mesh 412 is stably fixed inside the lightweight concrete to maximize tension force and improve durability of the panel.
  • the lightweight fireproof precast panel 410 can be utilized to make a composite reinforced panel by composing the lightweight precast panel 410 and other materials (the existing reinforced fiber (carbon fiber, glass fiber, aramide fiber, and so on) impregnating panel, prestressed reinforced fiber composite panel manufactured using a prestress method) like a reinforced fiber for impregnation, which will be described later, to show the fireproof property.
  • the existing reinforced fiber carbon fiber, glass fiber, aramide fiber, and so on
  • the lightweight fireproof precast panel 410 can be utilized when it is needed to improve fireproof efficiency of the concrete body, which is reinforced through the reinforcing method using the existing carbon fiber sheet, glass fiber sheet or aramide fiber sheet or when it is needed to reinforce due to gradually reduced reinforcing effect. Additionally, the lightweight precast panel 410 can be utilized as a method for protecting and repairing surface of the concrete body by providing beautiful appearance to the concrete body, which has bad outward appearance due to material difference between the concrete body and the fiber sheet or due to aging ofthe concrete body.
  • the method is to cut the lightweight fireproof precast panel in a proper size (in the same size as or larger than the conventional tile) and compress and adhere it to the surface of the concrete body, which is reinforced through the reinforcing method using the existing carbon fiber sheet, glass fiber sheet or aramide fiber sheet, or to the surface of the severely aged concrete body with synthetic resin group adhesive or polymer cement for adhesion.
  • Dust and foreign matters attached on the existing basal plane are completely removed through a high pressure washer or a dust collector while the worker pays attention not to damage the reinforced fiber attached on the basal plane, and then, the worker checks flaws of portions where the existing reinforced fiber is adhered, such as bubble, poor adhesion and exfoliation, and performs the reinforcing work. If the portions where the existing reinforced fiber is adhered are finish-coated with epoxy group or aqueous and oil group, very low viscosity epoxy group adhesive is coated, and at the same time, powder such as silica sand is sprayed on the coated surface to make the surface rough. If the portions where the existing reinforced fiber is adhered are finish-coated with urethane group, urethane group adhesive is coated.
  • the adhering method using synthetic resin group adhesive and the adhering method using polymer cement group adhesive are performed differently from each other.
  • the adhering method using synthetic resin group adhesive is finished by adhering the panel and filling up joints.
  • the epoxy or urethane group adhesive of high viscosity being in the form of grease is coated and adhered on the surface of the surface of the concrete body, on which the coated adhesive is completely hardened, and the surface of the lightweight precast panel in thickness of about 3 ⁇ 5mm evenly. After that, the worker makes joints within 30minutes after adhering the panel and sprays aggregate such as silica sands into the joints to make the surface rough, and then performs pointed joint work.
  • the epoxy resin for adhesion can be used by mixing fine aggregate or fine lightweight aggregate.
  • Material for filling up the joints is synthetic resin or the existing compound cement mortar, and a width of the joint is about 5mm. If the width of the joint is over 5mm, the worker fills up the joint twice while pressing sufficiently to prevent cracks.
  • the adhering method using the polymer cement group adhesive is finished by plastering mortar on the basal plane, adhering the panel and filling up the joints.
  • the worker plasters the mortar on the surface of the concrete body, on which the coated adhesive is completely hardened to make the surface rough, the worker performs the plastering work while paying attention not to exceed 10mm at once when the plastered thickness exceeds 10mm.
  • the plastered surface is cured for a week. The worker checks and repairs excitation and cracks of the mortar plastered surface before adhering the panel.
  • the worker sprays water on the surface of the panel and completely contacts the panel to the surface of the concrete body to prevent permeation of rain or water, to increase adhesive force and prevent exfoliation, freeze and fusion.
  • a once plastered area of the basal mortar plastered surface is less than 1.0m 2 .
  • the panel is adhered after adhesive mortar is plastered in thickness of about 3 ⁇ 6mm evenly. After the adhesive mortar is plastered again in thickness of about 3 ⁇ 4mm evenly, instantly tiles are adhered, and at this time, the worker strikes the tiles with a wood hammer to make the mortar protrude over 1/2 of the thickness of the panel at the joint portions.
  • the worker digs the joints and performs the plaster joint work. Before the plaster joint work, the worker sprays water on the basal plane of the joints to maintain moisture.
  • the width of the joint is about 5mm, but, if the width of the joint is over 5mm, the worker fills up the joint twice while pressing sufficiently to prevent cracks.
  • FIG. 7 illustrates a state that the reinforced fiber sheet 120 as reinforcing means for the concrete body is connected to the lightweight precast concrete panel 110.
  • the reinforcing means includes: the reinforced fiber sheet 120 and powder layer.
  • the reinforced fiber sheet is impregnated based on thermosetting resin coated on the surface of the lightweight precast concrete panel 110 and thermosetting resin 123, and cut in the same size as the lightweight precast concrete panel 110 and jointed to the lightweight precast concrete panel 110, or cut larger than the lightweight precast concrete panel 110 and jointed to the lightweight precast concrete panel 110 to protrude.
  • the powder layer is sprayed on an upper portion of the reinforced fiber sheet layer impregnated to increase the adhesion force to the concrete body to be reinforced.
  • the thermosetting resin 123 may be one of epoxy resin or converted epoxy resin.
  • the reinforced fiber sheet layer is formed on the upper surface of the lightweight precast concrete panel while stacked in at least one or more layers. That is, after the impregnable adhesive is coated on the upper surface of the panel, the reinforced fiber sheet layer is finished by impregnating and adhering the reinforced fiber sheet on an upper surface of the impregnable adhesive in one layer or several layers.
  • the reinforced fiber sheet is made by selecting and composing at least one or more of carbon fiber, glass fiber and aramide fiber, which have high tension strength, good elasticity coefficient and durability. Furthermore, to stack the reinforced fiber sheet in at least one or more layers, the steps of coating the impregnable adhesive and impregnating and adhering the reinforced fiber sheet are repeated while the worker pays attention to remove bubbles for perfect impregnation.
  • the composite reinforced panel consisting of the lightweight precast concrete panel, the reinforced fiber sheet layer and the powder is adhered on the concrete body by an adhering method using anchors.
  • the composite reinforced panel has a plurality of anchor holes.
  • the reinforced fiber sheet layers are stacked in several layers, the reinforced fiber sheets are cut to have different extension lengths from each other. Preferably, the extension lengths of the stacked reinforced fiber sheets are gradually shortened upward.
  • the powder is sprayed and adhered on the surface of the reinforced fiber sheet layer before the reinforced fiber sheet layer is completely hardened.
  • the powder makes the surface of the composite reinforced panel rough, thereby increasing adhesive force with adhesive resin during construction to help the composite reinforced panel to be integrated with the concrete body.
  • the powder may be silica sand or blast furnace steel slag.
  • the reinforced fiber sheet layers are stacked into several layers, the reinforced fiber sheets 120 must be stacked in the same weaving direction to maximize the tension force.
  • thermosetting resin mortar may be coated instead of primer, thermosetting resin and the reinforced fiber sheet.
  • the composite reinforced panel consisting of the lightweight precast concrete panel, the reinforced fiber sheet layer and the powder is adhered on the concrete body by an adhering method using anchors. For this, the composite reinforced panel has a plurality of anchor holes.
  • FIG. 8 illustrates a schematic and perspective view of a lightweight precast concrete composite reinforced panel 310 for repairing the concrete body, the panel including a lightweight concrete layer 311 and reinforcing means 312 for reinforcing the lightweight concrete layer 311.
  • the lightweight precast concrete composite reinforced panel 310 differs from the lightweight precast concrete composite reinforced panel 110 of FIG. 5 in the reinforcing means 120.
  • the lightweight precast concrete composite reinforced panel 310 including the reinforcing means 312 connected at a side of the lightweight concrete layer 311 is made in such a manner that epoxy resin for high strength mortar and hardening agent are mixed with each other, the mixture is mixed with silica sand aggregate in a prescribed rate, and the mixture is poured on the lightweight concrete layer 311 cured by forced steam.
  • the lightweight precast concrete composite reinforced panel 310 having the lightweight concrete layer 311 containing the reinforcing means 312 therein can divide the lightweight concrete layer into an upper lightweight concrete layer and a lower lightweight concrete layer, and the reinforcing means 312 forms boundary parts between the upper lightweight concrete layer and the lower lightweight concrete layer.
  • the lightweight precast concrete composite reinforced panel 310 can be formed in two types: one being that the lightweight concrete layer 311 is formed in a previously poured and cured panel type and connected with the reinforcing means 312; and the other being that the reinforcing means 312 is impregnated before the lightweight concrete layer 311 is hardened after being poured, and then, concrete is poured again to connect the reinforcing means 312 with the lightweight concrete layer 311.
  • the lightweight concrete layer 311 may be replaced with the generally used high strength concrete layer if necessary.
  • the lightweight precast concrete composite reinforced panel 310 according to the present invention can be sorted by the reinforcing means 312.
  • the reinforcing means 312 is selected from one of prepreg one-way carbon fiber, extra thin two-way woven carbon fiber, aramide fiber, glass fiber, a wire net, a wire mesh and a steel bar, and connected between the upper and lower lightweight concrete layers 311 by impregnated by means of epoxy resin and hardening agent. The manufacturing process will be described in more detail.
  • a frame is manufactured and a special film is attached on the surface of the frame.
  • One of Portland cement, back cement and color cement, lightweight aggregate, such as perlite, filite, celite, ALC aggregate and ALC crusher run aggregate, and water are mixed, and the mixture is poured and hardened on the frame to make a panel form, and thereby the upper and lower lightweight concrete layers 311 are formed.
  • Epoxy resin for impregnation and hardening agent are mixed in a prescribed mixing rate and the mixture is coated on a side of the lower lightweight concrete layer thin.
  • the lightweight precast concrete composite reinforced panel 310 can be formed by impregnating one ofthe glass fiber mesh, wire mesh and steel bar in a condition that the lightweight concrete layer 311 is not hardened, and instantly pouring the upper lightweight concrete layer.
  • a general concrete panel may be formed and used by using a general stone aggregate instead of lightweight aggregate of the lightweight concrete layer.
  • the lightweight precast composite panel or the precast concrete composite panel is manufactured larger than a portion of the concrete body to be repaired and the lightweight precast composite panel or the precast concrete composite panel is cut corresponding to the portion to be repaired with a hand cutter.
  • the lightweight precast concrete composite reinforced panel 310 is light and easy in construction but uses lightweight aggregate, it has a limit in its strength. If the portion of the concrete body 380 to be repaired requires prescribed compression strength, a precast concrete composite reinforced panel
  • the precast concrete composite reinforced panel 314 can be applied.
  • the precast concrete composite reinforced panel 314 includes the reinforcing means 312 formed and connected between the upper and lower concrete layers 315 and the upper and lower concrete layers 315.
  • the concrete layer 315 is formed by mixing generally used aggregate, cement and water, and the cement is selected from one of Portland cement, back cement and color cement.
  • the upper and lower concrete layers are formed by mixing generally used aggregate, cement and water, and the cement is selected from one of Portland cement, back cement and color cement.
  • the upper and lower concrete layers 315 can be formed in such a manner that the reinforcing means 312 is impregnated before the lower concrete layer is hardened after it is poured, and the upper concrete layer is poured again.
  • the reinforcing means 312 of the precast concrete panel, to which the previously poured and hardened upper and lower concrete layers of the panel type are connected, is formed in such a manner that one of extra thin two-way or one-way woven carbon fiber, prepreg one-way carbon fiber, glass fiber and aramide fiber is selected, epoxy resin and hardening agent, which is lower impregnating means, are coated on a side of the lower concrete layer of the panel type, the epoxy resin and hardening agent are coated again as upper impregnating means, and the upper concrete layer of the panel type is connected before the impregnating means is hardened.
  • the panel reinforcing means is glass fiber mesh, wire or steel bar
  • the glass fiber mesh, wire or steel bar is impregnated in the lower concrete layer before the poured lower concrete layer is hardened, and then the upper concrete layer is poured.
  • the panel reinforcing means can be formed in such a manner that one ofthe wire or steel bar is mounted, synthetic resin for high strength mortar and hardening agent are mixed with each other, silica sand aggregate is mixed, and the mixture is poured and connected to the concrete body.
  • micro-cement paste is plastered and impregnated on the surface of the glass fiber mesh, wire or steel bar.
  • FIGS. 9 and 10 illustrate an elevation view and a sectional view of an anchor for adjusting and injecting the level of the panel according to the present invention.
  • the anchor includes a body part 320, a nut 323, a clip 330 for carrying, and a pipe 340 for injection.
  • the body part 320 has a hollow part 325 and is in the form of a cylinder.
  • the body part 320 includes a male screw 321 formed on an outer circumference, a through hole 324 intersecting with the hollow part 325 at an end thereof, a female screw 333 formed on an inner circumference of the hollow part 325 at the other end thereof, and an angular protrusion 322.
  • the protrusion 322 may be in the form of a hexagon or an octagon.
  • the male screw 321 formed on the outer circumference of the body part 320 is to engage with the nut 323.
  • the nut 323 is a rotatable tool connected with the protrusion 322, and when the body part 320 is rotated, the nut 323 fixed to the panel 310 is moved in a vertical direction of the body part 320, thereby adjusting the level of the panel 310.
  • the clip 330 for carrying has a cylindrical part 331 having a female screw 333 formed on an inner circumference thereof, and the female screw 333 is engaged with the male screw 321 of the body part 320, to which the nut 323 is engaged, thereby serving as a link to help the carrying of the panel.
  • the pipe 340 for injection is generally in the form of a straw and has a male screw 341 formed at an end thereof. The male screw 341 of the pipe 340 is screwed with the female screw formed on the inner circumference of the protrusion 322 of the body part 320. Filler is injected into an empty space of a rear surface ofthe panel through the pipe 340, the hollow part 325 and the through hole 324 ofthe body part. When the injection ofthe filler is finished, the pipe 340 is removed.
  • FIG. 11 illustrates an elevation view and a partially sectional view of an insert 210 and an expanding tool 220 of a multi-purpose anchor for connecting the panel to the concrete body.
  • the insert 210 has a body part 211being generally in the form of a cylinder and a plurality of holes 212 formed in the body part 211.
  • the holes 212 formed in the body part 211 of the insert 210 serves as injection paths ofthe filler injected through an injection pipe 240 and as air discharge paths for discharging air between the panel and the concrete body.
  • the body part 211 has a female screw 213 coupled with a bolt 230 inserted into a prescribed depth from an end.
  • a head part 214 protruding from the body part 211 and serving as a spacer.
  • the head part 214 allows the panel connected with the anchor of the present invention to be maintained at a prescribed interval from the concrete body. Because the interval between the panel and the concrete body is determined according to the thickness of the head part 214, the thickness of the head part 214 is changed according to the interval between the panel and the concrete body. It will be appreciated that the head part 214 may have various shapes besides the shape of FIG. 11.
  • the other end of the insert 210 is split into several sections to be spread when the expanding tool 220 is struck with a striker.
  • the expanding tool 220 is inserted into the insert 210 after the insert 210 is inserted into the hole formed in the concrete body, and thereby the diameter ofthe insert is enlarged and the concrete body and the insert 210 are jointed.
  • a hollow part 221 which has a vertical section of a trapezoidal cylinder shape and in which the injection pipe 240 is inserted, is formed.
  • FIG. 12 illustrates an elevation view and a sectional view of the bolt 230 and the injection pipe 240 of the present invention (multi-purpose anchor).
  • the bolt 230 includes a body part 231 and a head part 232.
  • the bolt 230 has a hollow part 235 vertically passing the body part 231 and the head part 232 to allow insertion of the injection pipe 240.
  • the body part 231 has a male screw 233, which is formed on the surface thereof and engaged with the female screw 213 ofthe insert 210, and a plurality of holes 236 serving as injection paths ofthe filler and as inside air discharge paths.
  • the hollow part 235 vertically passing the center of the head part 232 has a female screw 234, which is formed on an inner circumference and engaged with the injection pipe 240.
  • the screwing engagement between the head' part 232 and the injection pipe 240 may be substituted with other coupling means having the same capacity.
  • the hollow part 221 of the expanding tool 220 and the hollow part 235 of the bolt 230 have the same diameter, and thereby they are extended by coupling the bolt 230 and the insert 210.
  • the injection pipe 240 which is generally in the form of the straw, includes a head part 241 and a body part 243.
  • the body part 243 has a diameter to the extent that the body part 243 can be inserted into the hollow part 221 ofthe bolt 230 and the expanding tool 220, and has a male screw 244, which is formed on an outer circumference of an end thereof, coupled with or separated from the head part 241.
  • the injection pipe 240 receives the filler from the head part 241.
  • a neck part ofthe head part 241 is formed concavely to remove the head part 241 by striking the head part 241 with a hammer after the injection of the filler.
  • the head part 241 has a male screw 242 formed on an outer circumference of a lower end to be coupled with the female screw 234 of the bolt 230, and a female screw formed on an inner circumference to be coupled with the male screw 244 of the body part 243 ofthe injection pipe.
  • the multi-purpose anchor can be made of metal material or thermosetting resin. If the anchor is made of thermosetting resin, the anchor is prevented from corrosion, so that the anchor has good outward appearance.
  • the panel 560, 562 for reinforcing the concrete body in bending, shearing and tension by composing the steel plate and reinforced fiber, or the steel pate, the reinforced fiber and the precast concrete maximizes merits of each material and supplements demerits of the materials, thereby securing softness of the panel to prevent the brittle break and stably reinforce the concrete body.
  • the lightweight concrete composite reinforced panel in which the reinforcing means is connected to the lightweight concrete panel to reinforce the concrete body and improve the capacity of the concrete body, improves the fireproof property of the reinforcing means impregnated, adhered and composed at the surface of the lightweight concrete panel and provides stable reinforcing effect by effectively protecting the reinforcing means from various bad environments such as sudden weather change.
  • the panel according to the present invention can be effectively fixed on the concrete body.
  • the panel allows the filler to be injected through the anchor without injection hole, has the prescribed interval formed between the panel and the concrete body, and allows the air to be discharged through the anchor without any air discharge hole while the filler between the panel and the concrete body is injected.
  • the anchor is made of thermosetting resin, so that the anchor is prevented from corrosion.
  • the lightweight concrete composite reinforced panel can secure uniform impregnation by manufactured through a nonstop manufacturing system in factory. Because the composite panel manufactured in the factory is simply assembled when being constructed in a construction site, causes dropping construction quality can be removed previously and dependence on technique ofthe workers in the site can be reduced, so that stable and estimated reinforcing effects can be obtained.
  • the lightweight precast concrete panel 410 can have improved durability to the bending and tension force of the panel by stably fixing and integrating the reinforced glass fiber mesh into the lightweight concrete. Furthermore, the present invention can have good adhesion property to the concrete body by coupling the reinforced fiber sheet for reinforcing the capacity of the concrete body to the lightweight precast concrete panel 410 and the powder is sprayed on the reinforced fiber sheet to treat the surface rough.
  • the lightweight concrete composite reinforced panel in which the reinforcing means is connected to the lightweight concrete panel to reinforce the concrete body and improve the capacity of the concrete body, improves the fireproof property of the reinforcing means impregnated, adhered and composed at the surface of the lightweight concrete panel and provides stable reinforcing effect by effectively protecting the reinforcing means from various bad environments such as sudden weather change.
  • FIGS. 13 and 14 illustrate schematic views showing a state that a lower portion of a beam is reinforced by the lightweight precast concrete composite reinforced panel 100 and a state that a lower portion and a side of the beam are reinforced by the lightweight precast concrete composite reinforced panel 100.
  • the reinforced fiber sheet is used as the reinforcing means for reinforcing the capacity ofthe concrete body.
  • the lightweight precast concrete composite reinforced panel 100 is changed in an arranged condition between units of the panel 100 according to the shape and area of the concrete body to be reinforced.
  • the reinforced fiber sheet 120 is cut and adhered larger than the lightweight precast concrete panel 110, and thereby the reinforced fiber sheet 120 protrudes in a prescribed length.
  • the protruded length is adjusted in proportion to weight by unit area ofthe reinforced fiber sheet 120. For example, if the weight of the reinforced fiber sheet 120 is 200g, 300g and 400g per lm 2 , the reinforced fiber sheet 120 is protruded to 20cm, 25cm and 30cm.
  • the units of the lightweight precast concrete composite reinforced panel 100 are connected in such a manner that a side of the panel 100 from which the reinforced fiber sheet 120 protrudes and a side from which the reinforced fiber sheet 120 does not protrude are faced and connected with each other.
  • the reinforced fiber sheet 120 protrudes from one of the four sides of the lightweight precast concrete panel 110, from opposite sides, from three sides except one side, or all four sides of the lightweight precast concrete panel 110.
  • FIG. 15 illustrates a method for installing the panel to a concrete paved road 380 containing a damaged part 383 using the anchor for adjusting the level of the panel and injecting.
  • the worker performs a joint indication work on the damaged road surface and cuts the indicated part with a road surface cutter.
  • the damaged part 383 of the concrete paved road surface is inside a cutting line 381, and the cutting line, which is a straight line, is at right angles with another cutting line 381.
  • the cut part is broken by hydraulic pressure or an electric hammer.
  • the epoxy mortar 361 in which synthetic resin of high adhesion force and silica sands are mixed in a prescribed rate is poured into the broken basal surface 388.
  • the worker performs a leveling work of the basal surface while forming fine holes of about 10mm between the epoxy mortar coated surface and the panel.
  • the nut 123 of the anchor is fixed into the anchor hole 313 formed in the panel 310 with synthetic resin adhesive, the body part 320 is screwed with the nut 323, and the clip 330 is screwed with the body part 320, and then, the panel 310 is carried and seated on the broken part.
  • the clip 330 is removed, as described above, the body part 320 is rotated and the level of the panel is adjusted to be consistent with the concrete road surface. Because the nut 323 is fixed, when the body part 320 is rotated, the level of the panel can be adjusted.
  • FIG. 16 illustrates a flow chart of a method for reinforcing the concrete body using a composite panel 560.
  • the reinforcing method includes the steps of: preparing a basal surface 500 of the concrete body to be reinforced; forming an adhesion layers 520 on the basal surface 500 of the concrete body and a surface of the composite panel 560; and adhering the composite panel 560 on the basal surface 500 ofthe concrete body.
  • anchor holes are formed at ends of the composite panel 560 or in the composite panel 560 at regular intervals.
  • dust inside the anchor holes is removed clean and permeable adhesion layer is formed on the surface (epoxy permeable adhesive is coated).
  • the permeable adhesion layer serves to remove fine dust of the basal surface 500, reinforce weak parts to improve the adhesive force of the composite panel 560.
  • epoxy adhesive for adhering the composite panel 560 is coated thick to about 3mm or more to form the adhesion layer.
  • the adhesion layer is formed also on a surface of the composite panel 560 and contacted and fixed on the basal surface.
  • the worker tights it with an anchor bolt, and thereby the anchor can prevent breakdown of the composite panel.
  • connection parts 515 are formed.
  • powder 540 is sprayed on a lower surface of the connection parts 515 to improve adhesive force of the connection parts. If necessary, the anchor can be installed on the connection parts.
  • the panels are constructed by a method of injecting and adhering synthetic resin.
  • FIG. 17 illustrates a method for repairing the concrete body having the damaged part using the lightweight precast concrete composite reinforced panel 310.
  • the damaged part 383 ofthe concrete body may be various.
  • the worker set damaged part forms cutting lines 381 meeting at right angles to each other and performs a cutting work. If an exposed steel bar 384 is corroded, the worker removes rust from the corroded part using a sand grinder for removing rust, and then, coats with anticorrosive using a brush. When the removal of rust and the anticorrosion work is finished, the worker perforates the damaged part using the hammer to form a packer hole for injection.
  • a packer 363 for injection is tightened and fixed, and the worker performs an injection and filling work using a high pressure injector.
  • the packer 363 is removed by striking it with hammer, dust on the surface is removed, and wet adhesion type high strength coffering levee 371 is plastered manually or by using a steel trowel.
  • the worker checks whether or not there is water leakage, forms a multi-purpose anchor hole 385 using a hammer drill and removes dust and foreign matters inside the anchor hole 385 using an air pump.
  • the multi-purpose anchor and one ofthe composite panels 310 for reinforcing the concrete body are installed and the level of the panel is adjusted to remove a surface deviation between the panel and the existing concrete body.
  • the gap between the panel and the concrete body is sealed with inorganic group sealing material.
  • the multi-purpose anchor serves as the air discharge hole, the air discharge hole 342 is formed only in the gap of the upper portion of the panel.
  • wet adhesion type grout material 372 is injected from the lower multi-purpose anchor upwardly.
  • the second low pressure injection is performed to achieve a perfect filling up.
  • the depressed part around the multi-purpose anchor hole, the portion where the air discharge hole 342 is formed, and polluted surfaces are finished.

Abstract

La présente invention concerne un panneau permettant de réparer et de renforcer un corps de béton, un ancrage à usage multiple, un ancrage destiné à régler le niveau et à réaliser une injection, et un procédé de réparation et de renfort du corps de béton à l'aide de ce panneau. Ce procédé peut connecter des adhésifs et des ancrages au niveau de parties faibles du corps de béton, lequel est neutralisé, ancien, détérioré, craquelé par des fuites d'eau, ou morcelé, ou au niveau de parties qui nécessitent une réparation ou un renfort à cause d'un changement de l'environnement dans lequel on l'utilise. Ce panneau renforcé composite comprend du béton léger, du béton de haute résistance ou une plaque d'acier et un élément de renfort, le protégeant ainsi des agressions de l'environnement qui pourraient réduire ses capacités de renfort. Ce panneau possède de bonne propriétés antifeu et d'isolation thermique, et il optimise les avantages des matériaux utilisés comme moyen de renfort. L'ancrage à usage multiple possède un boulon et un tuyau d'injection, il fixe efficacement le panneau sur le corps de béton, tient lieu d'entretoise permettant de conserver un intervalle prédéfini entre le panneau et le corps de béton, et permet d'injecter une charge et d'évacuer l'air de l'intérieur vers l'extérieur, ce qui améliore l'efficience de la construction. L'ancrage destiné à régler le niveau et à réaliser une injection possède une vis mâle et un élément femelle au niveau d'une extrémité et un tuyau d'injection du type paille, ce qui améliore l'efficience de la construction lorsque le panneau de béton est installé.
EP01981140A 2000-10-30 2001-10-30 Panneau composite permettant de reparer, renforcer un corps de beton et procede d'utilisation de ce panneau Withdrawn EP1346118A4 (fr)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
KR2000064018 2000-10-30
KR10-2000-0064018A KR100367096B1 (ko) 2000-10-30 2000-10-30 프리캐스트경량내화콘크리트 복합보강패널 및 그를 이용한구조물의 보강방법
KR2000069466 2000-11-22
KR1020000069466A KR100361960B1 (ko) 2000-11-22 2000-11-22 다목적 앙카
KR10-2001-0004044A KR100489515B1 (ko) 2001-01-29 2001-01-29 콘크리트 구조물 보수, 보강용 경량프리캐스트콘크리트패널 및 그를 이용한 보수, 보강공법
KR2001004044 2001-01-29
KR10-2001-0026987A KR100433379B1 (ko) 2001-05-17 2001-05-17 콘크리트 구조물 보강용 복합패널 및 이를 이용한 콘크리트 구조물 보강공법
KR2001026987 2001-05-17
KR2001041672 2001-07-11
KR10-2001-0041672A KR100404538B1 (ko) 2001-07-11 2001-07-11 경량내화프리캐스트패널, 이를 포함한 복합보강패널 및 그설치방법
PCT/KR2001/001830 WO2002036902A1 (fr) 2000-10-30 2001-10-30 Panneau composite permettant de reparer, renforcer un corps de beton et procede d'utilisation de ce panneau

Publications (2)

Publication Number Publication Date
EP1346118A1 true EP1346118A1 (fr) 2003-09-24
EP1346118A4 EP1346118A4 (fr) 2007-05-30

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Country Link
EP (1) EP1346118A4 (fr)
JP (1) JP2004513268A (fr)
CN (1) CN1265069C (fr)
AU (2) AU1280002A (fr)
CA (1) CA2427218A1 (fr)
WO (1) WO2002036902A1 (fr)

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AU1280002A (en) 2002-05-15
CA2427218A1 (fr) 2002-05-10
EP1346118A4 (fr) 2007-05-30
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WO2002036902A1 (fr) 2002-05-10
AU2002212800B2 (en) 2006-02-09
JP2004513268A (ja) 2004-04-30

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