KR101471069B1 - Building Reinforcement Method using Embedded Noise Blocking Member that can improve endurance - Google Patents

Abstract

A concrete structure reinforcing method having a sound insulation reinforcing member according to the present invention comprises: a step of preparing a sound insulation reinforcing member on at least a part of the surface of a base material of a concrete structure; a step of preparing a mesh member to surround the sound insulation reinforcing member; and a step of forming a packing layer to pack the mesh member with a packing material.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a soundproof reinforcement method for a building,

The present invention relates to a concrete structure reinforcing method, and more particularly, to a concrete structure reinforcing method capable of improving the sound insulation effect and the earthquake resistance by providing a sound insulation reinforcing member.

Until recently, Korea has been rapidly promoting the construction of apartment houses, mainly apartments, in order to provide comfortable environment and efficient housing by eliminating the housing shortages and increasing the land use rate. As a result, more than 70% of the recent housing construction has been occupied by multi-family houses, which has become a representative type of housing in Korea.

In the 1980s, the majority of the apartments were built in the wall, and then the high - rise apartments and residential complexes in the late 1990s appeared. Nowadays, 20 year old apartment buildings have gradually become structurally obsolete as well as functionally and spatially, resulting in many social problems.

Especially, in aged apartment buildings and apartment buildings, crime cases such as murder and fire due to floor impact noise have been occurred repeatedly. Therefore, there is a growing public opinion to include interlayer noise and vibration in the evaluation items of safety diagnosis during reconstruction.

In addition, the new building requires the floor construction to satisfy both the standard floor structure and the recognized floor structure, which satisfies the certain thickness and the constant breaking performance, but it is a problem because there is no sound insulation provision for the existing building.

Therefore, a method for solving such problems is required.

Korean Patent Publication No. 10-2006-0021052

SUMMARY OF THE INVENTION The present invention has been devised to solve the problems of the prior art described above, and it is an object of the present invention to provide a concrete structure reinforcement method which can improve the sound insulation effect as compared with the conventional art.

The present invention also provides a method of reinforcing a concrete structure that can unite the seismic reinforcement work and the sound insulation work related to noise and vibration.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to another aspect of the present invention, there is provided a method for reinforcing concrete structures using a sound reinforcement member, the method comprising: providing a sound reinforcement member on at least a part of a surface of a base material of a concrete structure; And packaging the mesh member with a packaging material to form a packaging layer.

Further, the step of surface-treating the base material may be further included before the step of providing the sound-insulating reinforcing member.

The step of surface-treating the base material may include at least one of grinding a surface of the base material, applying a primer to the surface of the base material, and applying an epoxy putty to the surface of the base material .

The step of providing the sound-absorbing member may include a step of forming a through-hole in the sound-absorbing member, and a step of attaching the sound-absorbing member to the base material.

In the step of providing the sound-insulating reinforcing member, a plurality of the through-holes may be formed in the sound-absorbing member at predetermined intervals.

The step of providing the mesh member may include a step of forming a fastening groove in the base material and a step of fastening the sound-absorbing reinforcement member and the mesh member to the fastening member corresponding to the fastening groove.

In addition, the step of providing the mesh member may include a plurality of mesh members having eyes of different sizes.

And the base material has a first surface and a second surface formed on the opposite side of the first surface, and the step of providing the sound-absorbing member includes the steps of: providing a sound-reinforcement member on both the first surface and the second surface of the base material .

The method of reinforcing a concrete structure using the sound insulation reinforcement member of the present invention for solving the above problems has the following effects.

First, there is an advantage that a sound insulation effect can be improved as compared with a standard floor structure applied to a conventional building.

Second, there is an advantage that the strength of the structure can be improved along with the sound insulation effect.

Third, there is an advantage that the construction cost is reduced and construction time is shortened because the construction process is simple.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

FIG. 1 is a perspective view showing a state of a base material in a concrete structure reinforcing method according to a first embodiment of the present invention; FIG.
FIG. 2 is a perspective view of a concrete structure reinforcing method according to a first embodiment of the present invention, in which a sound reinforcement member is provided on a base material; FIG.
3 is a perspective view of a concrete structure reinforcement method according to a first embodiment of the present invention in which a sound reinforcement member is attached to a base material;
FIG. 4 is a perspective view of a concrete structure reinforcement method according to a first embodiment of the present invention, in which a mesh member is provided on a sound reinforcement member; FIG.
FIG. 5 is a perspective view of a concrete structure reinforcement method according to a first embodiment of the present invention, in which the sound reinforcement member and the mesh member are fixed. FIG.
FIG. 6 is a perspective view illustrating a state of a base material in a concrete structure reinforcement method according to a second embodiment of the present invention; FIG.
FIG. 7 is a perspective view of a concrete structure reinforcement method according to a second embodiment of the present invention, in which a sound reinforcement member is attached to a base material; FIG.
FIG. 8 is a perspective view of a concrete structure reinforcement method according to a second embodiment of the present invention, in which a mesh member is provided on a sound reinforcement member; FIG.
9 is a cross-sectional view showing a specimen for evaluating bending strength of a concrete structure according to the present invention;
10 is a cross-sectional view showing a specimen for evaluating shear strength of a concrete structure according to the present invention;
11 is a side view illustrating an experiment for evaluating the strength of a concrete structure according to the present invention;
12 is a side view illustrating an experiment for evaluating an impact sound of a concrete structure according to the present invention;
13 is a graph showing the results of the impact sound evaluation of a concrete structure according to the present invention;
14 is a side view showing a cracking situation after carrying out a proof stress test on an test specimen for bending strength evaluation;
15 is a side view showing a cracking situation after carrying out a proof stress test on an test specimen for shear strength evaluation; And
16 is a graph showing the results of the evaluation of the strength of a concrete structure according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

The present invention provides a method of reinforcing concrete structures using a sound reinforcement member comprising the steps of: providing a sound reinforcement member on at least a part of a surface of a base material of a concrete structure; providing a mesh member to surround the sound insulation reinforcement member; And packaging the mesh member to form a packaging layer.

Hereinafter, each of these steps and the concrete structure thus produced will be described in detail.

1 is a perspective view showing a state of a base material 100 in a concrete structure reinforcing method according to a first embodiment of the present invention.

The base material 100 may include various concrete structures to be applied to a building or the like. In this embodiment, the base material 100 is a reinforced concrete with reinforcing bars embedded therein.

The slab, the wall, the beam, the column, etc., which can be used as the base material 100, are not limited. In this embodiment, the base material 100 is a beam embedded in the floor.

2 is a perspective view showing a state in which a sound absorbing member 110 is provided on a base material 100 in a concrete structure reinforcing method according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a state in which a sound reinforcement member 110 is attached to a base material 100 in a concrete structure reinforcing method according to the present invention. FIG.

2 and 3, the steps of providing the sound reinforcement member 110 on at least a part of the surface of the base material 100 of the concrete structure are performed after the base material 100 is prepared.

As the sound-absorbing member 110, various materials for sound insulation may be used. In this embodiment, the sound-absorbing member 110 is made of recycled rubber.

At this time, the sound-insulating reinforcing member 110 may be formed with a through-hole 112. In this embodiment, a plurality of square-shaped through-holes 112 are formed at predetermined intervals along the longitudinal direction of the sound- do. The reason for doing this is to improve the adhesion between the sound insulation reinforcement member 110 and the base material 100. The sound reinforcement member 110 may be attached to the base material 110 using an adhesive resin such as epoxy.

Wherein the base material (100) has a first surface and a second surface formed on an opposite side to the first surface, and the step of providing the sound absorbing member (110) The sound reinforcement member 110 may be provided on both sides. The concrete structures such as slabs, walls, beams, and the like are provided to divide the space, so that the concrete structures have surfaces formed on opposite sides so as to be exposed to different spaces. Therefore, when the sound-absorbing member 110 is provided on both the first surface and the second surface formed on the opposite sides, the sound-insulating effect can be further improved.

In the present embodiment, the sound-absorbing member 110 is provided on all four sides of the base material 100 having a bevelled shape, and the sound-absorbing member 110 provided on each side has a through-hole 112 .

Meanwhile, before the step of providing the sound-absorbing member 110, the step of surface-treating the base material 100 may be further included. In this step, at least one of grinding the surface of the parent material 100, applying a primer to the surface of the parent material 100, and applying an epoxy putty to the surface of the parent material 100 The above process may be included. Each of these processes enhances the structural characteristics of the base material 100 and improves the adhesion of the sound reinforcement member 110.

FIG. 4 is a perspective view of a concrete structure reinforcing method according to a first embodiment of the present invention, in which a mesh member 120 is provided on a sound reinforcement member 110.

After the step of providing the sound-absorbing member 110 on at least a part of the surface of the base material 100, the step of providing the mesh member 120 to surround the sound-absorbing member 110 is performed.

The mesh member 120 has a shape woven by wires formed so as to intersect with each other and has a purpose of reinforcing the base material 100 while preventing the sound-absorbing member 110 from falling off.

In the present embodiment, the mesh member 120 is provided on all four surfaces of the base material 100, like the sound reinforcement member 100.

5 is a perspective view illustrating a state in which the sound reinforcement member 110 and the mesh member 120 are fixed in the concrete structure reinforcement method according to the first embodiment of the present invention.

5, the AA section of the base material 100 is shown. As shown therein, in the present embodiment, the sound-absorbing member 110 and the mesh member 120 can be fixed by the fastening member 102 have. That is, a coupling groove is formed in the base material 100, and the coupling member 102 is formed to be insertable corresponding to the coupling groove. Accordingly, the sound-absorbing member 110 and the mesh member 120 are stably fixed.

Meanwhile, in the present embodiment, the mesh member 120 is provided only as one layer, but the mesh member 120 may be formed as a plurality of layers. In this case, the adhesion of the sound-insulating reinforcing member 110 and the reinforcing property of the base material 100 can be improved. This can then be selected considering the thickness of the final concrete structure.

When the mesh member 120 is provided in a plurality of layers, the plurality of mesh members 120 may have eyes of different sizes. That is, the wire densities of the respective mesh members 120 may be formed to be different from each other, so that structural stability and rigidity can be further increased.

Although not shown, after the step of providing the mesh member 120 to enclose the sound reinforcement member 110, the step of packaging the mesh member 120 with the packaging material to form the packaging layer is performed .

In this step, a refractory mortar, concrete, or the like is applied to the mesh member 120 for finishing treatment, and the concrete is cured to finalize the manufacture of the concrete structure. The adhesion performance between the base material 100, the sound insulation reinforcing member 110 and the mesh member 120 can be improved and the fire resistance performance can be ensured by the finishing treatment.

The first embodiment of the present invention has been described above, and the second embodiment of the present invention will be described below.

As shown in FIG. 6, in the second embodiment of the present invention, the base material 200 is a slab. As shown in FIG. 7, the sound-insulating reinforcing member 210 is attached to the entire surface of the slab-like base material 200. Also in this embodiment, the sound-insulating reinforcing member 210 has through-holes 212, and a plurality of holes 212 are arranged in the lateral and longitudinal directions along the surface area of the slab.

8, a mesh member 220 is provided on the sound-absorbing member 210, and then a package layer is formed. In this embodiment, since the base material 200 is a slab, the sound-absorbing member 210 and the mesh member 220 may be provided on the second surface opposite to the first surface.

As described above, the method of reinforcing a concrete structure of the present invention can improve the sound insulation effect and improve the structural strength of the structure by the structure of the sound insulation reinforcement member and the mesh member. Hereinafter, an experimental procedure and results of the sound insulation effect and strength improvement effect of the present invention will be described.

1. Fabrication of specimen

In this experiment, 10 concrete beams manufactured according to the above concrete reinforcing method and five beams prepared according to the conventional fiber sheet reinforcing method were manufactured, and a total of 10 beams were manufactured. Failure mode and reinforcing effect were examined.

First, in the case of the concrete beams manufactured by the method of reinforcing concrete structures of the present invention, a sound reinforcement member in the form of a recycled rubber plate was perforated with a square (100 x 100 mm) at intervals of 100 mm and attached with epoxy.

Then, a 100 mm hole was made in the base material, and anchor bolts were used to attach the sound reinforcement member and the wire mesh mesh member to each other. In addition, a fireproofing mortar with a compressive strength of 20 MPa was used to form a packing layer on the base material, the sound reinforcement member and the mesh member. In order to minimize the load and thickness of the concrete structure, Respectively.

Table 1 below summarizes the mechanical properties of each structure used in the concrete beams manufactured by the concrete structure reinforcing method of the present invention.

Name of material
thickness
(mm)
diameter
(mm) Tensile modulus
(GPa)
The tensile strength
(MPa) Playing rubber plate 3.8 - - 10.2 Wire Mesh - 3.8 - 24 Wire Mesh - 4.2 - 32 Mortar Compressive strength 21 MPa

In the case of a concrete beam manufactured by a conventional fiber sheet reinforcing method, a carbon sheet or an aramid fiber sheet is adhered to the surface of a base material by using an adhesive, followed by finishing treatment and curing.

Table 2 and Table 3 below summarize the mechanical properties of each structure used in the concrete beams produced by the fiber sheet reinforcing method.

Fiber sheet thickness
(mm) width
(mm) Tensile modulus
(GPa) The tensile strength
(MPa) SK-A280
(Aramid) 0.194 50 110 2,060 SK-N200
(carbon) 0.111 50 120 5,100

glue thickness
(mm) Results (MPa) Experimental Method SKR The tensile strength 30 KM 3015 Compressive strength 70 ASTM D695 Tensile shear
Adhesive strength 10 ASTM D1002

As described above, the concrete beams manufactured by the method of reinforcing concrete structure of the present invention and the concrete produced by the fiber sheet reinforcing method were divided into two types of specimens for flexure test, shear test and impact sound test . These specimens are summarized in Table 4 below.

No Specimen name reinforcement Reinforcement type Wire mesh diameter
(mm) One S-None - U type - 2 S-A Aramid fiber sheet - 3 S-C Carbon fiber sheet - 4 S-G-S3.8 Sound Insulation + Wire Mesh 3.8 5 S-G-S4.2 Sound Insulation + Wire Mesh 4.2 6 F-None - - 7 F-A Aramid fiber sheet - 8 F-C Carbon fiber sheet - 9 F-G-S3.8 Sound Insulation + Wire Mesh 3.8 10 F-G-S4.2 Sound Insulation + Wire Mesh 4.2 S: Shear specimen, F: Shear specimen
None: No reinforcement, A: Reinforcing aramid fiber sheet, C: Reinforcing carbon fiber sheet
G: Reinforced rubber plate, S: Reinforced wire mesh

As shown in Table 4, specimens 1 to 5 were prepared for shear test and impact sound test, and specimens 6 to 10 were prepared for bending test.

In the case of the test piece 1 and the test piece 6, the reinforcement was not performed. The test pieces 2 and 3 and the test pieces 7 and 8 were reinforced according to the conventional fiber sheet reinforcing method, and the test pieces 4 and 5 and the test pieces 9 and 10, Reinforced concrete structure reinforcement method.

On the other hand, FIGS. 9 and 10 show the specimens for evaluating the bending strength, and the specimens prepared for the shear test and the impact sound test, respectively.

First, in FIG. 9, an object 300 for bending strength evaluation is shown. This is an example of the test piece 9, and the test piece 300 has a length of 2400 mm and a cross section of 200 mm 50 mm. The upper and lower reinforcements (330) and (332) were laid, and the transverse reinforcements (334) were laid out at intervals of 100 mm. The test body 300 is also provided with a wire mesh 320.

In Fig. 10, a test body 400 prepared for the shear test and the impact sound test is shown. This is an example of the test piece 4, and the test piece 400 has a length of 2400 mm and a cross section of 200 mm 50 mm. And the upper and lower parts (430 and 432).

However, the transverse reinforcing bars 434 were laid out at intervals of 100 mm, but were not laid out at the both ends 200 mm in the central portion.

In all specimens, reinforcement section is 1400mm, and reinforcement type is U type reinforced with shear reinforcement which is reinforced at bottom and side at the same time.

The concrete strength of concrete was designed to be 20MPa, and the result of compressive strength test was 20.8MPa. In the case of reinforcing bars, the yield strength and tensile strength of the upper and transverse reinforcement bars were respectively 402MPa and 525MPa. The yield strength and tensile strength near the bottom were 422 MPa and 555 MPa, respectively.

2-1. Strength Evaluation

Fig. 11 shows the installation of the test specimen for evaluating the bending strength and evaluating the shear strength. As shown in the figure, an experimental test machine (20, hereinafter referred to as UTM) having a capacity of 2,000 kN and attached to the front end of the frame was used as a test piece. Experiments were carried out at a point distance of 600 mm and for a flexural specimen, 400 mm.

Strain gauges were provided on the surface of the compression concrete at the central part of the test body 300, the tensile bars and the surface of the stiffener to measure the strain, and a displacement meter was installed at the center of the test body 300 and one at the force point.

The crack generated in the test object 300 according to the load force is displayed on the test object 300 in real time, and the image is recorded.

Also, in case of unreinforced specimens, the load was applied until sufficient ductility was obtained and the reinforced specimens fell off until the reinforcing effect was no longer expected.

2-2. Impact sound evaluation

The experiment for the verification of the sound insulation effect was performed as shown in FIG. 12, a noise measurement box 10 made of wood plywood was manufactured. A rubber plate was placed on a specimen (not shown) so as to prevent unnecessary shaking and vibration of the measurement box 10 due to impact applied to the specimen 400 400 and the test body 400 is fixed to the lower end portion.

A method of dropping the sample at a height of 1 m using a light impact ball 14 at the central portion of the test sample 300 was repeated 100 times and the noise meter 12 and the sample 400 were placed under the measurement box 10, The strain gauge attached to the test specimen was used for the experiment.

3-1. Impact sound test result

Fig. 13 shows the results of the impact sound evaluation of the shear test body.

The test specimens SA-S3.8 reinforced with the fiber sheet and the test specimens SC-S3.8 reinforced by the sound reinforcement member of the present invention and the specimen SG-S4 .2 showed a noise measurement value 6% lower than that of the non-steel specimen 1.

In this experiment, it is estimated that the comparison of the noise measurement values of the test specimens is relatively low because it is measured using the light impact ball of about 600 g, and the measured value is expected to be large according to the weight of the impact applying material do.

3-2. Bending strength test result

In the case of specimens reinforced with fiber sheets, most of them were peeled, fractured and separated from concrete. On the other hand, in the case of the specimen reinforced by the sound-insulating reinforcing member of the present invention, only partial cracks were generated without detachment between the sound-insulating reinforcing member and the base material.

14 showing the cracking state of the flexural test specimen, initial cracks occurred at the lower center of the specimen at 25.8 kN in the case of the F-None specimen without reinforcement, and then the initial cracks occurred at the end portion perpendicular to the longitudinal direction of the beam Many bending cracks occurred. After reaching the maximum load at 69.13 kN, it showed a ductile behavior and finally showed a typical flexural failure mode which is finally broken by the compression of the concrete.

In the case of specimens F-A and F-C reinforced with fiber sheets, the cracks started at the lower center of the specimen, and the fiber sheets located on the side were finally destroyed while separating the concrete with the progress of peeling and fracture.

In the case of specimens FG-S3.8 and FG-S4.2 reinforced by the sound reinforcement of the present invention, the first crack occurred at the side of the center of the specimen. As the load applied to the specimen increased, the number of flexural cracks The crack width was increased. After reaching the maximum load, the separation behavior between the stiffener and the specimen was not seen and the ductile behavior was shown.

3-3. Shear strength test results

15 showing the cracking state of the shear test specimen, the initial cracks occurred on both sides of the beam center of the non-reinforced S-None specimen, and thereafter, a large number of shear cracks were generated in the diagonal direction of the beam length direction Shear fracture.

In the case of specimens S-A and S-C reinforced with fiber sheets, the compression of the ends of the stiffeners and the collapse of the concrete occurred immediately after the maximum load with the sudden decrease of the load.

In the case of the specimens SG-S3.8 and SG-S4.2 reinforced by the sound reinforcement of the present invention, the first crack occurred at the side of the center of the specimen. As the load increased, a lot of transmission cracks were generated, and the mortar attached to the sound reinforcement member began to fall off. The mesh members and the reinforcement members did not fall off, and the final cracks in which the propagation crack width increased were observed. Therefore, it is considered that the mesh member and the sound reinforcement member do not fall off from the base material due to the fixing force of the anchor bolts.

4. Results of Strength Evaluation

The load-displacement curve of each specimen is shown in FIG. 16, and the results of these tests are summarized in Table 5 below.

No Specimen name Yield strength
(kN) Yield displacement
(mm) Maximum strength
(kN) Maximum displacement
(mm) burglar
increase One F-None 65.2 7.2 69.1 20.7 One 2 F-A 105.0 15.4 108.7 23.7 1.57 3 F-C 104.1 13.0 113.9 25.8 1.67 4 F-G-S3.8 85.3 8.3 90.1 14.26 1.30 5 F-G-S4.2 82.3 10.4 86.0 14.2 1.24 6 S-None 64.1 10.6 70.3 90.3 One 7 S-A 114.2 21.9 114.2 21.8 1.62 8 S-C 110.8 20.1 119.9 36.0 1.70 9 S-G-S3.8 85.3 13.2 90.0 28.8 1.23 10 S-G-S4.2 82.0 11.0 86.0 14.67 1.22 Note) F: Flexural specimen, S: Shear specimen
None: No reinforcement, A: Reinforcing aramid fiber sheet, C: Reinforcing carbon fiber sheet
G: Reinforced rubber plate, S: Reinforced wire mesh

As shown in FIG. 16 and Table 5, in the case of the flexure specimen, the maximum strength of the specimen FA reinforced with aramid fiber was 1.57 times higher than that of non-reinforced specimen F-None, and 1.67 times higher than that of specimen FC reinforced with carbon fiber .

The maximum strength of the specimens F-G-S3.8 and F-G-S4.2 reinforced by the sound reinforcement member of the present invention was 1.30 times and 1.24 times higher, respectively. That is, the specimen reinforced by the sound reinforcement member of the present invention exhibited a maximum strength of about 30% lower than that of the specimen reinforced with the fiber sheet, and there was no influence on the thickness of the wire mesh, which is expected to affect the proof strength.

In the case of the shear test specimen, the specimen S-A reinforced with aramid fiber was 1.70 times higher than that of non-reinforced specimen S-None, and the specimen F-C reinforced with carbon fiber exhibited a maximum strength 1.62 times higher.

The maximum strength of the specimens S-G-S3.8 and S-G-S4.2 reinforced by the sound reinforcement of the present invention was 1.27 times and 1.22 times higher, respectively. In other words, there was no difference in the strength improvement due to the thickness of the wire mesh as in the flexural test specimen.

The stiffness and ductility evaluations calculated using the above load displacement curves are summarized in Table 6 below.

No Specimen name Initial stiffness
(kN / mm) ductility One F-None 9.03 2.87 2 F-A 6.83 1.54 3 F-C 7.98 1.98 4 F-G-S3.8 10.28 2.11 5 F-G-S4.2 7.88 1.37 6 S-None 6.07 8.5 7 S-A 5.22 0.99 8 S-C 5.51 1.79 9 S-G-S3.8 6.47 2.19 10 S-G-S4.2 7.49 1.34

Stiffness is generally defined as the slope of the curve of the load-displacement relationship. The stiffness for the member can be divided into the initial stiffness and the stiffness in the plastic region, and the initial stiffness is defined by the following equation (1).

: 초기 강성(kN/mm),

: 항복하중(kN),

: 항복하중에서의 변위(mm)

: Initial stiffness (kN / mm),

: Yield load (kN),

: Displacement at yielding load (mm)

<Formula 1>

In general, ductility is evaluated from the displacement relationship that can occur before the final failure in a specimen subjected to a load exceeding the elastic limit.

And the displacement of the specimen during yielding and the displacement at the time of separation of the reinforced stiffener are defined as follows.

: 연성,

: 보강재의 박리시 변위,

: 실험체의 항복시 변위

: Ductility,

: Displacement when stripping of stiffener,

: Displacement displacement of specimen

<Formula 2>

In the case of Table 6, the stiffness and ductility evaluation results of the test specimens are derived from the equations (1) and (2).

As shown in Table 6, in the case of the flexure specimen, the specimen FA reinforced with the aramid fiber sheet was 6.83 kN / mm and the specimen FC reinforced with the carbon fiber sheet was 7.98 kN / mm in the stiffness evaluation. For specimens reinforced by members, the specimens FG-S3.8 and FG-S4.2 were 10.28 kN / mm and 7.88 kN / mm, respectively.

It can be seen from this that the specimen reinforced by the sound reinforcement member of the present invention has a somewhat higher rigidity than the specimen reinforced with the fiber sheet.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: base material 110: sound reinforcement member
112: through hole 120: mesh member

Claims (8)

Providing a sound insulation reinforcement member having sound insulation performance such as a reclaimed rubber on at least a part of the surface of the base material of the concrete structure;
Providing a mesh member to surround the sound reinforcement member; And
Packaging the mesh member with a packaging material to form a packaging layer;
Lt; / RTI &gt;
Wherein the step of providing the sound-absorbing member includes the step of forming a through-hole in the sound-absorbing member,
Wherein the step of providing the mesh member comprises a plurality of mesh members having eyes of different sizes. The method according to claim 1,
Before the step of providing the sound-insulating reinforcing member,
Further comprising the step of surface treating the base material. 3. The method of claim 2,
The step of surface-treating the base material comprises:
Grinding the surface of the base material;
Applying a primer to the surface of the base material; And
Applying an epoxy putty to the surface of the base material;
The method comprising the steps of: The method according to claim 1,
Wherein the step of providing the sound-
Attaching the sound-insulating reinforcing member to the base material;
And a reinforcing member for reinforcing the concrete structure. The method according to claim 1,
Wherein the step of providing the sound-
And a plurality of through-holes are formed at predetermined intervals in the sound-insulating reinforcing member. The method according to claim 1,
Wherein the step of providing the mesh member comprises:
Forming a fastening groove in the base material; And
Tightening the sound insulation reinforcement member and the mesh member with a fastening member corresponding to the fastening groove;
And a reinforcing member for reinforcing the concrete structure. delete The method according to claim 1,
Wherein the base material has a first surface and a second surface formed on the opposite side of the first surface,
Wherein the step of providing the sound-
Wherein a sound reinforcement member is provided on both the first surface and the second surface of the base material.

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