KR100985563B1 - PP Composite Fiber Reinforcing Panel including Safety Belt, Manufacturing Method and Concrete Structure Reinforcing Method using thereof - Google Patents

Abstract

The present invention relates to a composite fiber reinforcement plate with a built-in polypropylene safety belt woven in the form of a flat belt, such as a seat belt of an automobile, in more detail, polypropylene fiber is woven into a flat belt form and impregnated in a thermosetting resin Reinforcing seat belts 100; One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper surface and the lower surface of the reinforcing safety belt 100 is first impregnated and cured in the thermosetting resin; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And a plurality of adhesive reinforcing hole portions 400 penetrating the upper and lower surfaces along both edges of the longitudinal direction of the composite fiber reinforcing plate integrally formed by drawing the reinforcing seat belt 100 and the one-way fiber layer 200. The present invention relates to a composite fiber reinforcing plate with a polypropylene seat belt, including a manufacturing method thereof, and a seismic reinforcing method for concrete structures using the same.

Reinforcing seat belt, one-way fiber layer, adhesive reinforcing concave, adhesive reinforcing hole, polypropylene composite fiber reinforcing plate, epoxy resin, anchor bolt, spacer, adhesive reinforcing aggregate

Description

PP composite fiber reinforcing panel including safety belt, manufacturing method and concrete structure reinforcing method using

The present invention relates to a composite fiber reinforcement plate with a built-in polypropylene safety belt woven in the form of a flat belt, such as a seat belt of an automobile, in more detail, polypropylene fiber is woven into a flat belt form and impregnated in a thermosetting resin Reinforcing seat belts 100; One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper surface and the lower surface of the reinforcing safety belt 100 is first impregnated and cured in the thermosetting resin; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And a plurality of adhesive reinforcing hole portions 400 penetrating the upper and lower surfaces along both edges of the longitudinal direction of the composite fiber reinforcing plate integrally formed by drawing the reinforcing seat belt 100 and the one-way fiber layer 200. The present invention relates to a composite fiber reinforcing plate with a polypropylene seat belt, including a manufacturing method thereof, and a seismic reinforcing method for concrete structures using the same.

Among the reinforcing methods of concrete structures, there are steel sheet bonding reinforcing methods, and the reinforcing methods using fiber sheets include carbon fiber sheet reinforcing method, glass fiber sheet reinforcing method, and aramid fiber sheet reinforcing method.

In addition, there is also a one-way fiber reinforcing plate reinforcement method produced by arranging carbon fibers or glass fibers in one direction, and in order to prevent the splitting of the one-way fiber reinforcing plate, fiber mesh or fiber mat of the same material as the one-way fiber There is reinforcement method using.

In addition, a reinforcing method using a fiber steel composite composite reinforcing plate such as unidirectional glass fiber or carbon fiber and aramid fiber and a thin steel sheet is also used.

Among these conventional techniques, the steel sheet adhesion reinforcing method has a problem that the maintenance of the heavy weight of the steel sheet and the target structure is exposed to moisture, the risk of corrosion is present and the maintenance is difficult after construction.

Carbon fiber sheet, glass fiber sheet, aramid fiber sheet, etc. are very lightweight and have excellent tensile strength, but the relatively large construction area can block the air permeability of the target structure to promote neutralization of the interface of the reinforcing material. There is a problem that the entire peeling phenomenon occurs. In addition, it is difficult to expect a stable reinforcement effect due to the inhomogeneity of the impregnation as the method of impregnating the fiber sheet in the field, and when the load is applied to the target structure, the dropout of the fiber sheet may proceed due to the attachment mechanism that depends only on the epoxy resin (adhesive). In addition, the rapid brittle fracture of the fiber sheet may result in the loss of valuable lives.

The one-way fiber reinforcing plate reinforcing method in which carbon fibers or glass fibers are arranged in one direction can solve the breathability problem of the target structure such as the fiber sheet through reinforcing the gap, but the fiber reinforcing plate having a wide width due to the fiber grain disposed only in one direction In this case, cracking may occur, which may also cause loss of valuable lives due to peeling and brittle fracture due to an attachment mechanism that depends only on the epoxy resin (adhesive agent) when a load is applied to the target structure.

The fiber reinforcement plate reinforcing method combined with fiber mesh and fiber mat can solve the breathability problem of the target structure through gap reinforcement and prevent the splitting of the reinforcing fiber plate and improve the adhesion performance by using attachment anchor separately from epoxy adhesive. However, when the load is applied to the target structure, it is difficult to prevent the fall of the reinforcement plate due to the weak acupressure performance around the anchor nut, and in the event of natural disaster such as an earthquake, it may cause valuable loss of life due to brittle fracture. In addition, when the reinforcing material is exposed to direct sunlight, the phenomenon of lifting the edge of the reinforcing plate due to the temperature difference inside and outside the reinforcing material may occur.

The fiber steel composite reinforcement plate reinforcing method, which combines unidirectional glass fiber or carbon fiber, aramid fiber and thin steel plate, prevents cracking of reinforcing fiber board, solves the problem of breathability of the target structure, and applies epoxy adhesive and attachment anchor at the same time. It can be seen that the adhesion performance is improved, and the brittle fracture phenomenon of the reinforcing material is alleviated to some extent, but when the target structure is exposed to moisture, there is a risk of corrosion, and when corrosion progresses, a recovery method is not easy.

Therefore, it is necessary to develop a reinforcement that can solve all problems such as cracking of reinforcement which is a problem of existing reinforcement method, breathability of the target structure, weak adhesion performance causing brittleness, brittle fracture phenomenon, and corrosion and the need of reinforcement method using the same. This is an urgent reality.

In order to solve the above-mentioned problems, the object of the present invention is as follows.

First, it is an object of the present invention to provide a polypropylene composite fiber reinforcing plate that can prevent the phenomenon of cracking in one direction.

Second, in the event of a disaster such as an earthquake Another object of the present invention is to provide a polypropylene composite fiber reinforcing plate which can prevent sudden brittle fracture.

Third, another object of the present invention is to provide a polypropylene composite fiber reinforcing plate that does not generate corrosion of the reinforcing material even when exposed to moisture or salt.

Fourth, it is another object of the present invention to provide a polypropylene composite fiber reinforcement plate and a reinforcing method that can prevent the lifting phenomenon of the edge to which the reinforcing plate is attached even when exposed to direct sunlight or rapid temperature change.

Fifth, the present invention provides a reinforcing method that can smoothly secure the breathability of the target structure to prevent the neutralization of the interface of the reinforcing material through the gap reinforcement arranged to maintain a constant gap between the polypropylene composite fiber reinforcing plate (10). For another purpose.

The configuration of the present invention created to achieve the above object is as follows.

The present invention is a polypropylene fiber woven in the form of a flat belt and reinforced belts for reinforcement is formed by impregnating the thermosetting resin (100); One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper surface and the lower surface of the reinforcing safety belt 100 is first impregnated and cured in the thermosetting resin; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And a plurality of adhesive reinforcing hole portions 400 penetrating the upper and lower surfaces along both edges of the longitudinal direction of the composite fiber reinforcing plate integrally formed by drawing the reinforcing seat belt 100 and the one-way fiber layer 200. The present invention relates to a composite fiber reinforcement plate (hereinafter referred to as "polypropylene composite fiber reinforcement plate 10") having a polypropylene seat belt configured to include the same.

In another aspect, the present invention is the first molding step of impregnating polypropylene fiber in the form of a flat belt constituting the reinforcing seat belt 100 in the thermosetting resin and pultrusion; An impregnation step of impregnating the thermosetting resin with carbon fibers, glass fibers, or aramid fibers constituting the one-way fiber layer 200 together with the reinforcing safety belt 100 that is first impregnated with the thermosetting resin; Pull-out molding to draw a cross-section of the adhesive reinforcing concave-convex portion 300 on one side or both sides of the outer side of the reinforcing seat belt 100 and the one-way fiber layer 200 through the impregnation step and heat it while passing through the composite fiber reinforcing plate mold Step: Punching step of punching the adhesive reinforcing hole 400 along the rim of the pulled composite fiber reinforcement plate; And a cutting step of cutting the composite fiber reinforcement plate according to a design standard.

In addition, the present invention relates to a concrete structure seismic reinforcement method using the polypropylene composite fiber reinforcing plate (10).

Technical effects of the configuration of the present invention are as follows.

First, it is possible to prevent the split phenomenon in one direction.

In other words, the reinforcing safety belt 100 woven in the form of a flat belt is embedded between the one-way fiber layers 200 to prevent the one-way cracking phenomenon of the polypropylene composite fiber reinforcing plate 10.

Second, the ductility is improved to prevent rapid brittle fracture.

In other words, as shown in FIG. 4, the woven safety belt 100, which is woven in the form of a flat belt having a ductility, is hardened, so that brittle fracture occurs in the rest of the polypropylene composite fiber reinforcement plate 10. Even if it occurs, it prevents brittle fracture of the entire polypropylene composite fiber reinforcement plate 10 through ductile behavior of the reinforcing seat belt 100 and prevents sudden collapse of the structure even in the event of a disaster such as an earthquake to minimize loss of life and property. Can be.

Third, corrosion of the reinforcement does not occur even when exposed to moisture or salt.

In other words, the steel sheet which is weak to moisture or salt can be excluded from the reinforcement to fundamentally prevent the possibility of corrosion.

Fourth, even if exposed to direct sunlight or rapid temperature changes, it is possible to prevent the lifting phenomenon of the edge to which the polypropylene composite fiber reinforcement plate 10 is attached.

In other words, the epoxy resin is also filled in the inside of the adhesive reinforcing hole 400 formed along the edge of the polypropylene composite fiber reinforcing plate 10 to strengthen the adhesive force at the edge portion and the polypropylene composite fiber reinforcing plate ( The edge of 10) can be prevented from being lifted from the structure to be reinforced.

Fifth, in the case of spacing reinforcement arranged to maintain a constant spacing between the polypropylene composite fiber reinforcing plate 10, it is possible to smoothly secure the breathability of the structure to be reinforced to prevent the neutralization of the interface of the reinforcing material.

In other words, when using a plurality of polypropylene composite fiber reinforcement plate 10 can be arranged so as to be spaced apart within the range to secure the reinforcement strength therebetween to ensure the breathability of the target structure.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows a laminated structure and the appearance of a specific embodiment of the present invention, (a) is the case where the adhesion-reinforcement uneven portion 300 is formed on only one outer surface, (b) is the adhesion-reinforced aggregate 50 is attached This is the case, (c) is a case where the adhesive strengthening concave-convex portion 300 is formed on both outer surfaces.

As shown in FIG. 1, the unidirectional fiber layer laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper and lower surfaces of the reinforcing safety belt 100 woven in the form of a flat belt and first impregnated and cured in the thermosetting resin. It contains 200.

The reinforcing seat belt 100 hardened by being impregnated with such a thermosetting resin is hardened integrally by being pulled out to be passed through a mold after being impregnated with the thermosetting resin together with the one-way fiber layer 200.

That is, the reinforcing seat belt 100 is impregnated in the thermosetting resin together with the one-way fiber layer 200 as shown in FIG. The secondary molding is made by the pultrusion molding, it is possible to prevent the phenomenon of brittle fracture generated in the one-way fiber layer 200 is immediately transferred to the reinforcing seat belt (100).

As described above, even when the brittle fracture phenomenon occurs in the rest of the composite fiber reinforcing plate 10, since the primary safety hardened seat belt 100, which is woven in the form of a flat belt, is built in a unique ductile behavior of the reinforcing seat belt 100. Through to prevent brittle fracture of the entire composite fiber reinforcement plate 10 and to prevent the sudden collapse of the structure even during a disaster such as earthquake, it is possible to minimize the loss of life and property.

On one side or both sides of the unidirectional fiber layer 200, an adhesive strengthening concave portion 300 is formed as shown in FIG. 1, and the adhesive strengthening concave portion 300 is impregnated in a thermosetting resin as shown in FIG. 2. The reinforcing seat belt 100 and the one-way fiber layer 200 are drawn together and are automatically formed according to the cross-sectional shape of the mold in the process of passing through the mold.

In other words, if the irregularities are formed on the upper and lower surfaces of the mold, the adhesion-reinforcement uneven parts 300 become as shown in Fig. 1 (c). 300 is in the form as shown in Fig. 1A.

The portion where the adhesive strengthening uneven portion 300 is not formed may be attached to a separate adhesive strengthening aggregate 50 as shown in FIG.

A plurality of adhesive reinforcing holes penetrating the upper and lower sides along the longitudinal edges (edges) of both sides of the polypropylene composite fiber reinforcing plate 10 integrally formed by drawing the reinforcing seat belt 100 and the unidirectional fiber layer 200. 400 is formed, such an adhesive strengthening hole 400 is made through a separate drilling process as shown in FIG.

The polypropylene composite fiber reinforcement plate 10 and a portion of the epoxy resin 20 applied to the surface of the structure to be reinforced are filled in the state of being pushed up while being filled in the interior of the adhesive reinforcing hole 400 to be polypropylene composite fiber reinforcement plate The edge of (10) is prevented from lifting on the surface of the structure to be reinforced.

Reinforcing seat belt 100 is a woven polypropylene fiber in the form of a flat belt.

The unidirectional fiber layer 200 laminated on the upper and lower surfaces of the reinforcing seat belt 100 woven from polypropylene fiber has a smaller elongation than polypropylene fiber (elongation of 500 to 1200%) but has a higher tensile strength (elongation rate). 1.5%), glass fibers (elongation 2.0%) or aramid fibers (elongation 1.8%) or any one.

Reinforcing seat belt 100 may be laminated so that a plurality of sheets overlap between the one-way fiber layer 200, unlike shown in FIG.

Figure 2a shows the manufacturing process (method) of the reinforcing seat belt 100, 1 to form a polypropylene fiber woven into a flat belt form constituting the reinforcing seat belt 100 by immersion in the thermosetting resin 1 The vehicle forming step; 2b is an impregnation step of impregnating a thermosetting resin with carbon fibers, glass fibers, or aramid fibers constituting the unidirectional fiber layer 200 together with the reinforcing seat belt 100 hardened by primary impregnation with a thermosetting resin; Pull-out molding step of heating while passing through the mold by drawing so that the cross-section of the adhesive reinforcing concave-convex portion 300 is formed on one or both outer surfaces of the reinforcing seat belt 100 and the one-way fiber layer 200 after the impregnation step: do.

Meanwhile, FIG. 3 shows a punching step of punching the adhesive reinforcing hole 400 along the edge of the pulled composite fiber reinforcement plate, which is stored in the rolled state after the punching and, when used, has a required length. Use after cutting.

Figure 5 shows a (a) cross-sectional view, and (b) a plan view of a specific embodiment in which the reinforcement method using the polypropylene composite fiber reinforcement plate 10 of the present invention is completed, the structure shown in Figure 5 is a reinforcement method as follows Is done.

(1) First step

Determining the position to attach the polypropylene composite fiber reinforcement plate 10 by checking the reinforcement range on the surface of the structure to be reinforced, and performing a job along the edge of the position where the polypropylene composite fiber reinforcement plate 10 will be attached to be.

When a plurality of polypropylene composite fiber reinforcement plate 10 is installed so as to be spaced apart at regular intervals, the polypropylene composite fiber reinforcement plate 10 is performed along the rim of the position to be attached.

(2) second stage

Using an electric hand cutter, a cutting line is formed to a depth of 5 to 10 mm along the ink line worked in the first step, and the surface of the structure surrounded by the cutting line is roughly ground using a hand grinder, and then a high pressure dust collector is used. Use to remove dust and other debris.

The reason for the surface grinding is to increase the adhesive strength of the polypropylene composite fiber reinforcement plate 10 by making the surface rough.

(3) third stage

After weighing and mixing the two-component high viscosity epoxy resin 20 and mixing using a hand mixer, the surface of the structure in which the surface grind is completed in the second step and evenly applied to one surface of the polypropylene composite fiber reinforcement plate 10. do.

(4) 4th step

Attaching the polypropylene composite fiber reinforcing plate 10 to the surface of the surface-finished structure, the adhesive reinforcing hole portion 400 formed on both sides of the coated epoxy resin 20 polypropylene composite fiber reinforcement plate 10 Press the polypropylene composite fiber reinforcement plate 10 to be pushed out to fill the outside.

(5) 5th step

Using an electric vibration drill penetrates the polypropylene composite fiber reinforcement plate 10 and drills the anchor hole for preventing peeling on the surface of the structure at regular intervals.

(6) 6th step

The anchor bolt 30 is installed in the anchor hole and the nut is fastened to perform fixing of the polypropylene composite fiber reinforcement plate 10.

That is, the polypropylene composite fiber reinforcement plate 10 is fixed by the epoxy resin 20 and the anchor bolt 30 is maintained in a stable attachment state.

Once this is done, the entire process will be terminated after the necessary subsequent finishing.

Figure 6 shows a cross-sectional view of another specific embodiment the reinforcement method is completed using the polypropylene composite fiber reinforcement plate 10 of the present invention, the structure shown in Figure 6 is made of the following reinforcement method.

(1) First step

Check the reinforcement range on the surface of the structure to be reinforced to determine the position to attach the polypropylene composite fiber reinforcement plate 10, and work along the rim of the position where the polypropylene composite fiber reinforcement plate 10 will be attached.

When a plurality of polypropylene composite fiber reinforcement plate 10 is installed so as to be spaced apart at regular intervals, the polypropylene composite fiber reinforcement plate 10 is performed along the rim of the position to be attached.

(2) second stage

In order to bury the polypropylene composite fiber reinforcing plate 10, using a dry grooving cutter, grooving the surface of the structure enclosed in the first step to a depth of 20 to 30 mm using a high pressure dust collector. To remove dust and other foreign matter.

(3) third stage

After measuring and mixing the two-component high-viscosity epoxy resin 20 and mixing using a hand mixer, the surface of the grooving cut structure and the one surface of the polypropylene composite fiber reinforcement plate 10 are evenly applied in the second step. do.

(4) 4th step

Adhesion reinforcement hole 400 is attached to the polypropylene composite fiber reinforcement plate 10 on the surface of the grooved cut structure, and the coated epoxy resin 20 is formed on both edges of the polypropylene composite fiber reinforcement plate 10. Press the polypropylene composite fiber reinforcement plate 10 so as to be pushed out.

(5) 5th step

Using an electric vibration drill penetrates the polypropylene composite fiber reinforcement plate 10 and drills the anchor hole for preventing peeling on the surface of the structure at regular intervals.

(6) 6th step

The anchor bolt 30 is installed in the anchor hole and the nut is fastened to fix the polypropylene composite fiber reinforcement plate 10.

That is, the polypropylene composite fiber reinforcement plate 10 is fixed by the epoxy resin 20 and the anchor bolt 30 is maintained in a stable attachment state.

(7) 7th step

After the curing period of the epoxy resin 20, high-strength mortar is poured on the surface of the embedded polypropylene composite fiber beam steel sheet (10).

Once this is done, the entire process will be terminated after the necessary subsequent finishing.

Figure 7 shows a (a) cross-sectional view, and (b) a plan view of another specific embodiment in which the reinforcement method using the polypropylene composite fiber reinforcement plate 10 of the present invention is completed, such a structure is made of the following reinforcement method.

(1) First step

Determining the position to attach the polypropylene composite fiber reinforcement plate 10 by checking the reinforcement range on the surface of the structure to be reinforced, and performing a job along the edge of the position where the polypropylene composite fiber reinforcement plate 10 will be attached to be.

When the distance between the plurality of polypropylene composite fiber reinforcement plate 10 is arranged close as shown in FIG. 7 (b), the epoxy resin 21 for high viscosity sealing is formed in the space between neighboring polypropylene composite fiber reinforcement plate 10. Is filled.

(2) second stage

Roughly grind the surface of the structure enclosed in the first line using the hand grinder to remove dust and other foreign matter using a high pressure dust collector.

(3) third stage

After attaching a plurality of spacers 40 to the surface of the surface-finished structure in the second step, the polypropylene composite fiber reinforcement plate 10 is placed on the surface of the surface-finished structure, using an electric vibration drill By penetrating the polypropylene composite fiber reinforcing plate (10) to perforate anchor holes for peeling prevention on the surface of the structure at regular intervals.

The spacer 40 performs a function of expanding a space corresponding to the height (thickness) of the spacer 40 between the polypropylene composite fiber reinforcement plate 10 and the surface of the structure to be reinforced, and having a constant thickness is sufficient. There is no particular limitation on the form.

(4) 4th step

The anchor bolt 30 is installed in the anchor hole and the nut is fastened to fix the polypropylene composite fiber reinforcement plate 10 to the surface of the structure.

When the polypropylene composite fiber reinforcement plate 10 is fixed to the surface of the structure while the spacer 40 is attached as described above, it corresponds to the thickness of the spacer 40 between the polypropylene composite fiber reinforcement plate 10 and the surface of the structure. An empty space is formed.

(5) 5th step

Space between the edges of the polypropylene composite fiber reinforcement plate 10 and the surface of the structure using the high viscosity sealing epoxy resin 21, the adhesion reinforcing hole 400 and the anchor bolt of the polypropylene composite fiber reinforcement plate 10 This is a step of sealing the portion 30 penetrated.

If necessary, as shown in FIG. 7, a separate sealing plate 60 is attached to cover both edges of the neighboring polypropylene composite fiber reinforcing plate 10 (parts having the adhesive reinforcing holes 400).

(6) 6th step

A low viscosity adhesive epoxy resin 22 is injected into an empty space between the polypropylene composite fiber reinforcing plate 10 and the surface of the structure.

In order to inject the low-viscosity adhesive epoxy resin 22 as described above, an injection port for injecting a low-viscosity epoxy resin is provided on one side sealed with a high-viscosity sealing epoxy resin and a discharge port for discharging internal air is provided on the other side. Of course.

FIG. 8 shows a method of wrapping a polypropylene composite fiber reinforcement plate 10 on the surface of a circular column.

(1) First step

Determine the position to attach the polypropylene composite fiber reinforcement plate 10 by checking the reinforcement range on the surface of the circular column for reinforcement, and work along the edge of the position where the polypropylene composite fiber reinforcement plate 10 will be attached. Step.

(2) second stage

Roughly grind the surface of the circular column enclosed by the ink line using a hand grinder, and then remove dust and other foreign matter using a high-pressure dust collector.

(3) third stage

After weighing and mixing the two-component high-viscosity epoxy resin 20 and mixing using a hand mixer, the surface of the circular column and the one side of the composite fiber reinforcement plate 10 having the surface grind in the second step is evenly applied. Step.

(4) 4th step

Attaching the polypropylene composite fiber reinforcement plate 10 to the surface of the circular column, the surface grinding, the coated epoxy resin 20 is formed in the adhesive reinforcing hole formed on both edges of the polypropylene composite fiber reinforcement plate 10 ( The step of lapping the polypropylene composite fiber reinforcement plate 10 by automatic lapping apparatus or by hand so as to be pushed out through 400). In consideration of the state of the circular column, the polypropylene composite fiber reinforcing plate 10 may be wrapped only one layer so that the border overlaps, or may be repeatedly wrapped in multiple layers.

Once the lapping is complete, the necessary finishing processes are carried out.

As described above, the technical spirit of the present invention has been described with reference to specific embodiments of the present invention, but the protection scope of the present invention is not necessarily limited to these embodiments, and various modifications may be made without departing from the technical spirit of the present invention. In the case of design changes, addition or deletion of well-known technologies, simple numerical limitations, etc., the scope of protection of the present invention is also clarified.

Figure 1 shows a laminated structure and the appearance of a specific embodiment of the present invention, (a) is the case where the adhesion-reinforcement uneven portion 300 is formed only on one side outer surface, (b) is the case where the adhesion-reinforced aggregate is attached, (c) is a case where the adhesion-reinforcement uneven portion 300 is formed on both outer surfaces.

Figure 2 (a) shows the manufacturing process (method) of the reinforcing seat belt 100, Figure 2 (b) is a polypropylene composite fiber reinforcing plate 10 using a reinforcing seat belt 100. The manufacturing process (method) is shown.

Figure 3 shows (a) the process of drilling the adhesive reinforcing hole 400 of the polypropylene composite fiber reinforcing plate 10 of the present invention, and (b) the plane of the perforated composite fiber reinforcing plate 10.

4 is a cross-sectional view showing that the reinforcing seat belt 100 prevents sudden brittle fracture in the process of breaking the unidirectional fiber layer 200 of the polypropylene composite fiber reinforcing plate 10 of the present invention.

Figure 5 shows a (a) cross-sectional view, and (b) a plan view of a specific embodiment of the reinforcing method using the polypropylene composite fiber reinforcing plate 10 of the present invention.

Figure 6 shows a cross-sectional view of another specific embodiment of the reinforcement method using the polypropylene composite fiber reinforcement plate 10 of the present invention.

Figure 7 shows (a) cross-sectional view, and (b) plan view of another specific embodiment of the reinforcement method using the polypropylene composite fiber reinforcement plate 10 of the present invention.

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

100: reinforced seat belt

200: unidirectional fiber layer

300: adhesive reinforced concave-convex portion

400: adhesive strengthening hole

10: Polypropylene composite fiber reinforcement board

20: epoxy resin

21: epoxy resin for high viscosity sealing

22: low viscosity adhesive epoxy resin

30: anchor bolt

40: spacer

50: adhesive reinforced aggregate

60: sealing plate

Claims (8)

Polypropylene (PE) synthetic fiber is woven in the form of a flat belt and reinforced belt safety belt 100 is impregnated with a thermosetting resin to be molded; One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper surface and the lower surface of the reinforcing safety belt 100 is first impregnated and cured in the thermosetting resin; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And, The reinforcing seat belt 100 and the unidirectional fibrous layer 200 are pull-molded to form a plurality of adhesive reinforcing hole portions 400 which penetrate the upper and lower sides along both edges of the longitudinal direction of the polypropylene composite fiber reinforcement plate 10 integrally formed. ); Composite fiber reinforcement plate with a polypropylene seat belt, characterized in that comprises a. In claim 1, The one-way fiber layer 200 is a composite fiber with a polypropylene seat belt embedded, characterized in that any one of carbon fiber, glass fiber or aramid fiber has a smaller elongation than the polypropylene fiber constituting the reinforcing seat belt 100 Gusset. The method of claim 1 or 2, A composite fiber reinforcement plate with a polypropylene seat belt, characterized in that a plurality of sheets of reinforcing seat belt 100 is laminated so as to overlap between the one-way fiber layer 200. First molding step of impregnating polypropylene fiber woven into a flat belt form constituting the reinforcing seat belt 100 in the thermosetting resin and pultrusion; An impregnation step of impregnating the thermosetting resin with carbon fiber, glass fiber, or aramid fiber constituting the one-way fiber layer 200 together with the reinforcing safety belt 100 which is first impregnated and cured in the thermosetting resin; Pull-out molding step of heating while passing through the mold by drawing so that the cross-section of the adhesive reinforcing concave-convex portion 300 is formed on one or both outer surfaces of the reinforcing seat belt 100 and the one-way fiber layer 200 after the impregnation step: And, A punching step of punching the adhesion-reinforcing hole 400 along the rim of the pulled composite fiber reinforcement plate; Method for producing a composite fiber reinforcement plate with a polypropylene seat belt, characterized in that comprising a. Polypropylene fiber is woven into the form of a flat belt reinforcing seat belt 100 is impregnated in the thermosetting resin; One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper and lower surfaces of the reinforcing seat belt 100; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And a plurality of adhesive reinforcing hole portions 400 penetrating the upper and lower surfaces along both edges of the longitudinal direction of the composite fiber reinforcing plate integrally formed by drawing the reinforcing seat belt 100 and the one-way fiber layer 200. The present invention relates to a reinforcing method using a composite fiber reinforcing plate (hereinafter referred to as a 'polypropylene composite fiber reinforcing plate') having a polypropylene seat belt including therein, Determining the position to attach the polypropylene composite fiber reinforcement plate 10 by checking the reinforcement range on the surface of the structure to be reinforced, and the material to work along the edge of the position where the polypropylene composite fiber reinforcement plate 10 will be attached Stage 1; Using an electric hand cutter, a cutting line is formed to a depth of 5 to 10 mm along the ink line worked in the first step, and the surface of the structure surrounded by the cutting line is roughly ground using a hand grinder, and then a high pressure dust collector is used. Using a second step of removing dust and other foreign matter; After measuring and mixing the two-component high-viscosity epoxy resin 20 and mixing using a hand mixer, the surface of the structure in which the surface grinding is completed in the second step and the surface of one side of the polypropylene composite fiber reinforcement plate 10 are applied. The third step; Attaching the polypropylene composite fiber reinforcing plate 10 to the surface of the surface-finished structure, the adhesive reinforcing hole portion 400 formed on both sides of the coated epoxy resin 20 polypropylene composite fiber reinforcement plate 10 Compressing the polypropylene composite fiber reinforcing plate 10 to be pushed out through the fourth step; A fifth step of penetrating the polypropylene composite fiber reinforcement plate 10 using an electric vibration drill to perforate the anchor hole for preventing peeling on the surface of the structure at regular intervals; And, A sixth step of installing the anchor bolt 30 in the anchor hole and fastening the nut; Concrete structure seismic reinforcement method using a polypropylene composite fiber reinforcement plate comprising a. Polypropylene fiber is woven into the form of a flat belt reinforcing seat belt 100 is impregnated in the thermosetting resin; One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper and lower surfaces of the reinforcing seat belt 100; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And a plurality of adhesive reinforcing hole portions 400 penetrating the upper and lower surfaces along both edges of the longitudinal direction of the composite fiber reinforcing plate integrally formed by drawing the reinforcing seat belt 100 and the one-way fiber layer 200. The present invention relates to a reinforcing method using a composite fiber reinforcing plate (hereinafter referred to as a 'polypropylene composite fiber reinforcing plate') having a polypropylene seat belt including therein, Determining the position to attach the polypropylene composite fiber reinforcement plate 10 by checking the reinforcement range on the surface of the structure to be reinforced, and the material to work along the edge of the position where the polypropylene composite fiber reinforcement plate 10 will be attached Stage 1; In order to bury the polypropylene composite fiber reinforcing plate 10, using a dry grooving cutter, grooving the surface of the structure enclosed in the first step to a depth of 20 to 30 mm using a high pressure dust collector. A second step of removing dust and other foreign matters; After weighing and mixing the two-component high-viscosity epoxy resin 20 and mixing using a hand mixer, the surface of the grooving cut structure and the surface of one side of the polypropylene composite fiber reinforcement plate 10 are applied to the second step. The third step; Adhesion reinforcement hole 400 is attached to the polypropylene composite fiber reinforcement plate 10 on the surface of the grooved cut structure, and the coated epoxy resin 20 is formed on both edges of the polypropylene composite fiber reinforcement plate 10. Compressing the polypropylene composite fiber reinforcing plate 10 to be pushed out through the fourth step; A fifth step of penetrating the polypropylene composite fiber reinforcement plate 10 using an electric vibration drill to perforate the anchor hole for preventing peeling on the surface of the structure at regular intervals; A sixth step of installing the anchor bolt 30 in the anchor hole and fastening the nut; And, A seventh step of pouring high strength mortar on the surface of the embedded polypropylene composite fiber reinforcing plate 10 after the curing period of the epoxy resin 20 has elapsed; Concrete structure seismic reinforcement method using a polypropylene composite fiber reinforcement plate comprising a. Polypropylene fiber is woven into the form of a flat belt reinforcing seat belt 100 is impregnated in the thermosetting resin; One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper and lower surfaces of the reinforcing seat belt 100; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And a plurality of adhesive reinforcing hole portions 400 penetrating the upper and lower surfaces along both edges of the longitudinal direction of the composite fiber reinforcing plate integrally formed by drawing the reinforcing seat belt 100 and the one-way fiber layer 200. The present invention relates to a reinforcing method using a composite fiber reinforcing plate (hereinafter referred to as a 'polypropylene composite fiber reinforcing plate') having a polypropylene seat belt including therein, Determining the position to attach the polypropylene composite fiber reinforcement plate 10 by checking the reinforcement range on the surface of the structure to be reinforced, and the material to work along the edge of the position where the polypropylene composite fiber reinforcement plate 10 will be attached Stage 1; A second step of roughly grinding the surface of the structure surrounded by the ink line using the hand grinder and removing dust and other foreign matter using a high pressure dust collector; After attaching a plurality of spacers 40 to the surface of the surface-finished structure in the second step, the polypropylene composite fiber reinforcement plate 10 is placed on the surface of the surface-finished structure, using an electric vibration drill A third step of penetrating through the polypropylene composite fiber reinforcing plate 10 and drilling the anchor hole for preventing peeling on the surface of the structure at regular intervals; Installing the anchor bolt 30 in the anchor hole and fastening the nut to fix the polypropylene composite fiber reinforcement plate 10 to the surface of the structure; Space between the edges of the polypropylene composite fiber reinforcement plate 10 and the surface of the structure using the high viscosity sealing epoxy resin 21, the adhesion reinforcing hole 400 and the anchor bolt of the polypropylene composite fiber reinforcement plate 10 A fifth step of sealing the portion 30 penetrated; And, A sixth step of injecting and filling a low viscosity adhesive epoxy resin 22 into an inner space between the polypropylene composite fiber reinforcement plate 10 formed by the spacer 40 and the surface of the structure; Concrete structure seismic reinforcement method using a polypropylene composite fiber reinforcement plate comprising a. Polypropylene fiber is woven into the form of a flat belt reinforcing seat belt 100 is impregnated in the thermosetting resin; One-way fiber layer 200 is laminated in the longitudinal direction in the state impregnated with the thermosetting resin on the upper and lower surfaces of the reinforcing seat belt 100; Adhesive-strengthened concave-convex portion 300 formed on one side or both sides of the outer surface of the one-way fiber layer 200; And a plurality of adhesive reinforcing hole portions 400 penetrating the upper and lower surfaces along both edges of the longitudinal direction of the composite fiber reinforcing plate integrally formed by drawing the reinforcing seat belt 100 and the one-way fiber layer 200. The present invention relates to a reinforcing method using a composite fiber reinforcing plate (hereinafter referred to as a 'polypropylene composite fiber reinforcing plate') having a polypropylene seat belt including therein, Determine the position to attach the polypropylene composite fiber reinforcement plate 10 by checking the reinforcement range on the surface of the circular column for reinforcement, and work along the edge of the position where the polypropylene composite fiber reinforcement plate 10 will be attached. First step; A second step of roughly grinding the surface of the circular column surrounded by the ink line using a hand grinder to remove dust and other foreign matter using a high pressure dust collector; After weighing and mixing the two-component high-viscosity epoxy resin 20 and mixing using a hand mixer, the surface of the circular column and the one side of the polypropylene composite fiber reinforcement plate 10 are finished in the second step. The third step of doing; And, Attaching the polypropylene composite fiber reinforcement plate 10 to the surface of the circular column, the surface grinding, the epoxy resin 20 is applied to the adhesive reinforcing hole 400 formed on both edges of the composite fiber reinforcement plate 10 A fourth step of closely wrapping the polypropylene composite fiber reinforcement plate 10 by an automatic lapping apparatus or by hand so as to be pushed out; Concrete structure seismic reinforcement method using a polypropylene composite fiber reinforcement plate comprising a.

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