KR100367096B1 - Precast light-weight fire-resistant composite panel and method of using the same in reinforcing RC body - Google Patents

Abstract

The present invention is a light-weight refractory concrete layer 111 formed by mixing cement, inorganic porous lightweight aggregate, water, the panel reinforced inorganic fibers are laminated in a single layer or multiple layers inside the lightweight refractory concrete layer 111 A water-soluble cement system deposited on the lightweight refractory concrete layer 111 as an impregnating means of the panel reinforced inorganic fiber sheet 112 whenever a sheet 112 and one layer of the panel reinforced inorganic fiber sheet 112 are laminated. A precast lightweight refractory concrete panel 110 including a polymer cement system or a polymer resin layer 113 and formed by sequentially curing natural and forced curing; And structural reinforcing means bonded to and bonded to a surface of the precast lightweight refractory concrete panel 110. It relates to a method of reinforcing the structural performance of the structure using a precast lightweight refractory concrete composite reinforced panel 100 and the precast lightweight refractory concrete composite reinforced panel 100 is formed.

The present invention protects various reinforcing fibers and adhesive synthetic resins from fire, temperature change, etc. by excellent heat insulation and fire resistance, and maintains reinforcing performance in a light and stable manner, and does not give heterogeneity between structures and reinforced parts after reinforcing work. In addition, to provide a means to prevent human damage caused by toxic gases in the event of fire.

Description

Precast light-weight fire-resistant composite panel and method of using the same in reinforcing RC body}

The present invention relates to a method for reinforcing structural performance of a structure using a precast lightweight refractory concrete composite reinforced panel and the precast lightweight refractory concrete composite reinforced panel. More specifically, the structural performance of the structure by combining the precast lightweight refractory concrete composite reinforcement panel combined with the precast lightweight refractory concrete panel and the precast lightweight refractory concrete composite reinforcement panel with the structural defects It is about how to reinforce.

In general, concrete structures contain reinforcing bars inside. In the structural analysis of the structure, concrete is a strong support force for the compressive force, but a weak member for the tensile force, by supporting the tensile force applied to the structure by including the reinforcement in the concrete. In addition, since concrete is alkaline, it also acts as a protector to prevent the rebar from being oxidized. Therefore, since the combinations of the two materials have many complementary aspects, almost all of the structures are in the limelight as excellent materials, even if they are made of reinforced or steel concrete structures. However, concrete is aged by gradually neutralizing its alkalinity due to carbon dioxide and various oxidizing gases contained in the atmosphere and acid rain. do. In addition, when the coating thickness of the reinforcing bar is not properly maintained during the construction process, the rebar may be exposed, and the structural performance of the structure may be significantly degraded due to various causes such as neglect of maintenance.

As described above, various reinforcement methods have been provided for the purpose of reinforcing concrete structures having reduced structural performance. The bonding method of steel plate, the bonding method of reinforcing fiber sheet, such as glass fiber, carbon fiber, aramid fiber, various reinforcing fiber sheet lamination synthetic resin panel adhesion method, etc. are these.

The steel plate attachment method is excellent in the initial performance of the steel plate as a reinforcing member, but first of all, its fire resistance is insufficient, which can cause fatal structural defects in case of fire. Therefore, there is a need for continuous glass management and repair, and problems such as making viewers have anxiety due to the combination of aesthetics and heterogeneous materials.

Reinforcing fiber sheet bonding method is a method of bonding a sheet made of reinforcing fiber with excellent resistance to tensile strength by using epoxy resin to the surface of the structure. It is accompanied by loss of reinforcing effect as well as generation of toxic gas when contacted with fire or high temperature. In order to reduce the reinforcement effect due to shrinkage and expansion due to temperature change during winter season, and to prevent the penetration of moisture, acid rain and carbon dioxide, continuous maintenance and repair are necessary.

The panel-adhesive method for laminating synthetic fiber-based laminates can relieve some of the shortcomings of existing methods, but it is still weak in thermal insulation and heat resistance, and the reinforcing effect disappears at the same time as the generation of toxic gases. .

An object of the present invention by applying a precast lightweight refractory concrete composite reinforcement panel combined with a reinforcing means for reinforcing the structural performance of the structure to a precast lightweight refractory concrete panel for the reinforcement of the concrete structure, The present invention is to provide a means to effectively cope with various harmful environments that degrade performance and to reinforce structural performance of structures stably with excellent heat insulation and fire resistance.

Another object of the present invention by applying a precast lightweight refractory concrete composite reinforcement panel to reinforce the concrete structure to protect the structure from fire, direct sunlight, cold air, salt, etc., as well as to prevent human injury due to toxic gases in the event of fire. It is to provide a means that can be.

It is another object of the present invention to maximize the reinforcing effect by minimizing bubble generation and adhesion defects on the inner surface of the reinforcement by using the injection and filling method as well as ensuring the product quality by manufacturing the precast lightweight refractory concrete composite reinforcement panel. It is to provide a means that can be.

1 is a schematic diagram showing the manufacturing process and configuration of the precast lightweight refractory concrete panel of the present invention.

2 is a schematic diagram showing a manufacturing process of the precast lightweight refractory concrete composite reinforced panel of the present invention.

3 is a schematic diagram illustrating reinforcing a lower part of a beam using a precast lightweight refractory concrete composite reinforcing panel as one embodiment of the present invention.

4 is a schematic view showing reinforcing a pier using a precast lightweight refractory concrete composite reinforcement panel as one embodiment of the present invention.

5 is a schematic diagram illustrating reinforcing the lower and side portions of a beam by using a precast lightweight refractory concrete composite reinforced panel as one embodiment of the present invention.

6 is a schematic diagram showing a reinforcing process of a structure using a precast lightweight refractory concrete composite reinforced panel as one embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100: precast lightweight fireproof concrete panel

110: precast lightweight refractory concrete composite reinforced panel

111, 111 ': Light weight fireproof concrete layer 112: Inorganic fiber sheet layer

113: water-soluble cement or polymer cement or polymer resin layer

114: pinhole 115: lattance

120: reinforcing fiber sheet 121: reinforcing fiber sheet protrusion

122: permeable primer 123: thermosetting resin

130: permeable filler layer 210: pier

220: beam 230: slab

240: finishing layer 250: cracks in the structure

260: exposed rebar 270: anchor hole

310: mold for forming precast lightweight refractory concrete panel

311 Bolt 312 Anchor with female thread inside

313: spacer 314: injection hole

315: air outlet 316: tape

317: low pressure manual injector 318: high pressure automatic injector

The present invention is used in the reinforcement work of the concrete structure, the precast lightweight refractory concrete composite reinforcement panel 100 and the precast lightweight refractory concrete panel 110 formed by combining the structural performance reinforcing means 120 of the structure and the It relates to a structural performance reinforcement method of a structure using a precast lightweight refractory concrete composite reinforcement panel (100).

The present invention will be described with reference to the accompanying drawings.

1 is a schematic view showing the manufacturing process and configuration of the precast lightweight refractory concrete panel 110 of the present invention, the precast lightweight refractory concrete panel 110 is a lightweight refractory concrete layer 111, inorganic fiber sheet layer And water-soluble cement-based or polymer-based resin layers are deposited.

The lightweight refractory concrete layer 111 is poured after mixing cement, inorganic porous lightweight aggregate, water using an electric hand mixer or mortar mixer.

The inorganic porous lightweight aggregate should be light in weight while mixing with cement to act as aggregate. Specific examples of the inorganic porous lightweight aggregate may be used as follows. Silicate-based (silicate-based) materials include foamed ceramics or microbalon-based materials, silicate (silica) diatomaceous earth-based materials, silicate (silicate) or siliceous-based materials, artificial inorganic fiber-based materials, silicon carbide-based materials, and the like. Can be used. In particular, the foamed ceramics or microbalon-based materials, such as perlite, fillite, celite, cellite, pitchstone, pinestone, bitumen, obsidian, shale), vermiculite, bentonite, Kaolin (feldspar), alumina-based foamed ceramics may be applied. Insulation and masonry of cinder, slurry ash, coke, mineral wool-based materials, various slag and building works as porous aggregates obtained from coal steel The material of ALC (ALC) aggregate and crushed aggregate of ALC (ALC) can be applied as the porous lightweight aggregate. The above embodiments have a coarse internal structure and form common pores inside the tissue. The higher the ratio of the inorganic porous lightweight aggregate has the effect of increasing the heat resistance, while the strength of the panel is lowered. Therefore, the mixing ratio of the cement and the inorganic porous lightweight aggregate may be changed according to the conditions to be applied to the panel. When the inorganic porous lightweight aggregate is the perlite, the mixing ratio with cement is a weight ratio of the inorganic porous lightweight aggregate to the weight of cement, in which the panel is formed in the range of 5% to 80%, but the strength required for the panel In consideration of the heat resistance and can be adjusted in the range of the mixing ratio. It has heat resistance and strength suitable for general use at a mixing ratio of about 20%.

The inorganic fiber sheet layer 112 is included between the light weight refractory concrete layer 111 to reinforce the tensile force acting on the panel of the precast lightweight refractory concrete panel 110 and to insulate and act as a single layer. Or it may be included stacked in multiple layers. However, when the inorganic fiber sheet layer 112 is included in the panel 110 only by the inorganic fiber sheet itself, the upper and lower layers of the panel 110 are separated from each other by separating the inorganic fiber sheet layer 112. Phenomenon appears. Thus, the inorganic cement fiber sheet is impregnated with microcement powder that can penetrate the inside of the fiber sheet. The micro cement serves to reinforce the inorganic fiber sheet. However, the micro cement further impregnates the fine powder of the inorganic porous lightweight aggregate to reinforce the thermal insulation of the panel because it reduces the thermal insulation of the panel. And when the inorganic fiber sheet impregnated in the fine powder of the micro cement and the inorganic porous lightweight aggregate is included in the concrete panel 110, it is impregnated with a water-soluble cement system or polymer cement system or polymer resin as a base.

The panel 110 formed by the above process is a natural curing and forced curing (steam curing) in order to complete the precast lightweight refractory concrete panel 110. The precast lightweight refractory concrete panel 110 is manufactured by changing the temperature distribution according to curing time and forced curing time according to conditions such as thickness, heat resistance and heat insulation.

In addition, a pattern may be formed on the mold 310 of the precast lightweight refractory concrete panel 110 to form a pattern on the surface of the panel 110 or apply color to the aesthetics.

2 is a schematic view showing the manufacturing process of the precast lightweight refractory concrete composite reinforced panel 100 of the present invention, the precast lightweight refractory concrete composite reinforced panel 100 of the present invention is the precast lightweight refractory concrete panel 110 ) Is formed by combining the structural performance reinforcement means of the structure. Figure 2 shows that the reinforcing fiber sheet is bonded to the precast lightweight refractory concrete panel as a structural performance reinforcing means of the structure. In detail, the impregnated base material is impregnated with a permeable primer 122 applied to the surface of the precast lightweight refractory concrete panel 110, a thermosetting resin applied to the surface of the permeable primer 122, and the thermosetting resin 123. The precast lightweight refractory concrete panel 110 is formed to include a reinforcing fiber sheet 120 that is cut and bonded to the same size or is protruded and bonded by a larger cut. The thermosetting resin 123 may be an epoxy resin or a modified epoxy resin. The material of the reinforcing fiber sheet 120 includes one-way carbon fiber woven in a prepreg method, carbon fiber woven in a cross shape, aramid fiber, glass fiber, and the like. The reinforcing fiber sheet 120 is laminated in one or two or more layers are bonded to the precast lightweight refractory concrete panel 110, each time the laminated is further applied by impregnating the thermosetting resin 123. In addition, the reinforcing fiber sheet 120 has a fiber weaving direction is distinguished according to the weaving method, when the fiber weaving direction must be matched when laminated and bonded to maximize the expression effect of the tensile force should be laminated to match the weaving direction. And as a structural performance reinforcing means of the structure, a thermosetting resin mortar may be applied in place of the primer, the thermosetting resin, the reinforcing fiber sheet.

3 to 5 are embodiments of the present invention, using the precast lightweight refractory concrete composite reinforced panel 100 to reinforce the lower part of the beam (beam), the pier, the lower part and the side of the beam (beam) As a schematic diagram, a reinforcing fiber sheet is applied as a structural performance reinforcing means of the structure. As shown in the figure, the precast lightweight refractory concrete composite reinforcement panel 100, the arrangement state between the panel 100 unit is changed according to the shape and area of the structure to be reinforced, but adjacent panel 100 unit and the reinforcement The reinforcing fiber sheet 120 is cut and bonded to be larger than the precast lightweight refractory concrete panel 110 so that the fiber sheet 120 can be continuously constructed by overlapping the reinforcing fiber sheet 120 than the panel 110. Is combined to protrude by a predetermined length. The protruding length is an example of adjusting the protruding length in proportion to the weight per unit area of the reinforcing fiber sheet 120, 20cm each when the weight of the reinforcing fiber sheet 120 is 200g, 300g, 400g per 1m2 It is formed to protrude by the length of 30cm, 40cm. And the connection method between the precast lightweight refractory concrete composite reinforcement panel 100 unit is connected so that the side of the panel 100 protruding the reinforcing fiber sheet 120 and the side where the reinforcing fiber sheet 120 does not protrude adjacent to each other. . Therefore, when the precast lightweight refractory concrete panel 110 is cut into a rectangular shape, the reinforcing fiber sheet 120 protrudes or faces only one of four sides of the precast lightweight refractory concrete panel 110. The beam may protrude on both sides, may protrude on all three sides except one, or may protrude on all four sides. In addition, the reinforcing fiber sheet 120 may form the shape by one layer, or may be formed by overlapping the precast lightweight refractory concrete panel 110 in two or more layers.

When the thermosetting resin mortar is applied to the precast lightweight refractory concrete panel 110 as structural performance reinforcing means of the structure, the joints between the panels 100 are reinforced by a joint reinforcing means and integrated. The joint reinforcing means may be made of various fixed hardware, high strength inorganic mortar, and the like.

6 is a schematic view showing the reinforcing process of the structure using a precast lightweight refractory concrete composite reinforcement panel 100 as an embodiment of the present invention, when the reinforcing fiber sheet 120 is applied as a structural performance reinforcing means of the structure to be. The reinforcement method of the structure using the precast lightweight refractory concrete composite reinforcement panel 100 will be described.

In the field, the construction and installation of the temporary construction material to measure the shape and dimensions of the structure to be reinforced to determine the shape and size of the panel, the factory manufactures the precast lightweight refractory concrete composite reinforced panel 100 to a predetermined standard .

Before installing the precast lightweight refractory concrete composite panel 100, the base surface treatment of the structure to be reinforced should be preceded, and the finishing layer 240 and neutralization, peeling, aging, and deterioration of the structure to be reinforced are removed. When the rebar 260 is exposed, the exposed rebar 260 is rust-treated, and if there is a crack 250 in the structure, repair is performed by the epoxy injection method or the epoxy filling method. It is removed cleanly, and the recessed part is smoothed and treated on the base surface. In particular, since the recess is not easy to inject and fill the injection material due to the generation of pores in the recess, the primer is applied and smoothed with epoxy mortar.

When the base surface treatment of the surface of the structure is completed by forming a hole 270 to be anchored to the anchor 312, the anchor is formed by inserting the anchor 312 formed inside the female thread into the hole 270. Since the anchor 312 is a hardware into which a fixed hardware to fix the precast lightweight refractory concrete composite panel 100 is fitted, the anchor 312 should be constructed by accurately setting its position. The spacer 313 is fixed to a portion where the anchor 312 is fixed, and the spacer 313 is for securing a predetermined gap between the precast lightweight refractory concrete composite panel 100 and the structure.

The precast lightweight refractory concrete composite reinforcement panel 100 is continuously installed, but the reinforcing fiber sheet 120 protrudes by installing the reinforcing fiber sheet 120 and the reinforcing fiber sheet 120 protruding side adjacent to each other. The 121 is overlapped with each other, and the anchor 312 is fixed with the bolt 311 in accordance with the fixed hole. In addition, the anchor 312 and the bolt 311 as a specific example of the fixed hardware can be replaced by other fixed hardware having the same performance as a natural.

The outer portion of the gap formed between the structure and the precast lightweight refractory concrete composite reinforced panel 100 by the spacer 313, the joint portion and the panel between the precast lightweight refractory concrete composite reinforced panel 100 continuously installed ( The bolt 311 groove of the surface 100 is sealed with a non-flammable inorganic sealing material and the tape 316 is prevented from contamination of the panel 100.

An injection hole 314 for injection of the permeable injection filler 130 to be filled in the gap formed between the precast lightweight refractory concrete composite reinforcement panel 100 and the structure is installed in the joint portion between the composite reinforcement panel 100. The injection hole 314 is installed on both the panel surface side and the side surface. This is because the filler 130 can be filled by injecting a portion that has not been charged from the side. When the filler 130 is injected, an air outlet 315 is installed to discharge the air in the gap, and the tip of the outlet 315 is installed higher than the level at which the filler 130 is filled.

The permeable injection filler 130 is injected by the primary forced high pressure injector 318 and then injected by the secondary manual low pressure injector 317 for the unfilled portion. The air outlet 315, the filler inlet 314, and the tape are removed and finished.

Precast lightweight refractory concrete panel 110 as a component of the precast lightweight refractory concrete composite reinforcement panel 100 of the present invention is a conventional method without the structural reinforcing means coupled to the structural performance reinforcement of the structure as described above ( Carbon fiber sheet reinforcing method, aramid fiber sheet reinforcing method, glass fiber sheet reinforcing method, various reinforcing fiber laminated synthetic resin panel reinforcing method, epoxy mortar reinforcing method, etc.) Can play a protective role.

The present invention effectively responds to various harmful environments that reduce weight and reinforcement performance by applying a lightweight fireproof concrete composite reinforcement panel and a method of installing the same by applying reinforcing fibers to a lightweight fireproof concrete panel for reinforcement and performance improvement of a concrete structure. And excellent heat resistance and thermal insulation, to maintain the performance of the reinforcing fiber means reliably, and by applying a concrete panel made of the same material as the structure to be reinforced to provide a means that does not give a sense of heterogeneity between the structure and the reinforced part after the reinforcement work, By applying lightweight refractory concrete composite reinforcement panel, which is an inorganic material, it has been provided a means to prevent human injury due to toxic gases in case of fire.

Claims (8)

As used for reinforcement work of concrete structure, Lightweight refractory concrete layer 111 formed by mixing cement, inorganic porous lightweight aggregate, water, the light-resistant refractory concrete layer 111 is included in one layer or a plurality of layers are stacked, micro cement and the inorganic porous Whenever the inorganic fiber sheet impregnated with the lightweight aggregate fine powder and one layer of the inorganic fiber sheet is included, the water-soluble cement or polymer cement or polymer resin layer included in the lightweight refractory concrete layer as the impregnating means of the panel reinforced inorganic fiber sheet. It includes, and precast lightweight refractory concrete panel 110 is formed by sequentially curing natural and forced curing; And, Structure reinforcing means bonded to and bonded to the surface of the precast lightweight refractory concrete panel 110; Precast lightweight refractory concrete composite reinforcement panel 100 comprising a. According to claim 1, The inorganic porous lightweight aggregate is characterized in that any one of perlite (fillite), fillite (fillite), celite (cellite), ALC (ALC) aggregate, and ALC (ALC) crushed aggregate Precast lightweight refractory concrete composite reinforced panel (100). The method of claim 1 or 2, wherein the structure reinforcing means A permeable primer 122 applied on the precast lightweight refractory concrete panel 110; Thermosetting resin 123 is applied to the surface of the permeable primer 122; And, An inorganic-based reinforcing fiber sheet (120) impregnated with the thermosetting resin (123) as a base and cut and bonded to the same size as the precast lightweight refractory concrete panel (110), or protruded and bonded by a larger cut; Precast lightweight refractory concrete composite reinforcement panel 100 comprising a. In claim 3, the inorganic fiber-reinforced sheet 120 is one kind of aramid fiber sheet woven in one direction, unidirectional carbon fiber sheet woven in a prepreg method, woven carbon fiber in the form of a cross, or glass fiber sheet or By selecting a plurality of types of fiber sheets, one or two or more layers, regardless of the number of stacking and the stacking order, if the direction of the fibers in the weaving method of the reinforcing fiber sheet 120 is laminated according to any direction When bonded to each other, and laminated the reinforcing fiber sheet 120, precast lightweight refractory concrete composite reinforced panel 100, characterized in that the impregnated and bonded to the thermosetting resin (123). In claim 4, when the precast lightweight refractory concrete panel 110 is cut in the shape of a planar rectangle or a curved rectangle, the reinforcing fiber sheet 120 is the same as the precast lightweight refractory concrete panel 110 Cut to size and combined, or larger than the precast lightweight refractory concrete panel 110 is protruded only on one side of the four sides, protruding on both sides facing, or protruding from the other three sides except one side Precast lightweight refractory concrete composite reinforcement panel 100, characterized in that is coupled to protrude from the entire side. The precast lightweight refractory concrete composite reinforcement panel (100) according to claim 1 or 2, wherein the structure reinforcing means is a thermosetting resin mortar coated on the precast lightweight refractory concrete panel (110). The method of claim 1 or 2, wherein the structure reinforcing means is to combine the synthetic resin panel impregnated with a carbon fiber sheet, aramid fiber sheet, glass fiber sheet on the precast lightweight refractory concrete panel 110 with a thermosetting resin Precast lightweight refractory concrete composite reinforcement panel 100, characterized in that. Manufacturing the precast lightweight refractory concrete composite reinforcement panel 100 of claim 5 by measuring the dimensions of the structure to be reinforced; Remove the finishing layer 240 and neutralization, peeling, aging, deterioration of the structure to be reinforced, and if the rebar is exposed, the exposed steel bar 260 is rust prevented, and if there is a crack 250 in the structure Repair the cracks and smooth the surface if there are uneven surfaces; Spacer 313 is installed on the surface of the base surface-treated structure to install a fixed hardware to fix the precast lightweight refractory concrete composite panel 100 and to maintain a gap between the precast lightweight refractory concrete composite panel 100 and the structure ); The precast lightweight refractory concrete composite reinforcement panel 100 is continuously installed, but the reinforcing fiber sheet 120 protrudes by installing the reinforcing fiber sheet 120 and the reinforcing fiber sheet 120 protruding side adjacent to each other. Fixed to the fixing hardware by overlapping the 121; The outer portion of the gap formed between the structure and the precast lightweight refractory concrete composite reinforcement panel 100 by the spacer 313, the joint portion between the precast lightweight refractory concrete composite reinforcement panel 100 and the fixed Sealing grooves on the panel surface due to the hardware with an inorganic sealing material; An injection hole 314 for injection of the permeable injection filler 130 to be filled in the gap formed between the precast lightweight refractory concrete composite reinforcement panel 100 and the structure is installed in the joint portion between the composite reinforcement panel 100 and the When the filler 130 is injected, the end of the air outlet 315 for discharging the air inside the gap is installed to be higher than the level at which the filler 130 is filled; The permeable injection filler 130 is injected by a primary forced high pressure injector 318 and then injected by a secondary manual low pressure injector 317 for unfilled sites; And, Removing and finishing the air outlet 315 and the filler inlet 314; Reinforcement method of the structure using a precast lightweight refractory concrete composite reinforcement panel 100 comprising a.