KR20150033475A - Water-proofing apparatus for bridge or concrete constructions and water-proofing method using thereof - Google Patents

Abstract

The present invention comprises: an adhesive layer applied to a bridge or a bridge surface of a concrete structure; a waterproof sheet adhering to the bridge surface by the adhesive layer and preventing water from being introduced into the bridge surface; and a display unit interposed between the waterproof sheet and the bridge surface and discolored when coming into contact with the water.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridging waterproofing device for a bridging or concrete structure and a bridging waterproofing method using the bridging waterproofing device,

The present invention relates to a bridging waterproofing apparatus for bridges or concrete structures and a bridging waterproofing method using the bridging waterproofing apparatus. More particularly, the present invention relates to a bridging waterproofing apparatus for bridging or concrete structures, The present invention relates to a bridging waterproofing device for bridges or concrete structures and a bridging waterproofing method using the same.

Generally, the waterproof layer protects the bottom plate from infiltration water in the pavement packaging, and plays a role of ensuring the waterproofness and adhesion, forming the structural identity, and securing the durability.

Water penetration accelerates fatigue failure in concrete decks and corrosion of reinforcing bars and steels reduces the durability of bridges. Therefore, the waterproof layer plays an important role as a layer to improve the durability of the package and the bottom plate by preventing water penetration .

The importance of the waterproofing layer has been increased according to the research result that the waterproofing layer has not been recognized since the importance of the waterproofing layer was not recognized and the criteria have not been established yet recently, various waterproofing materials and methods have been developed to affect the bridge bottom protection and the mechanical relationship with the asphalt layer have.

The bridging waterproofing agent is a mixture of two or more raw materials such as asphalt, synthetic rubber, synthetic resin, fiber, mineral and volatile solvent.

Generally, it can be classified into a permeation system, a sheet system, a coating system, and a packaging system to be used as a bridging waterproofing layer.

First, the penetrating system waterproofing agent penetrates the micro pores of the concrete bridge deck surface to form a primary water film by penetrating the waterproofing agent, and bonds and diffuses by the continuous chemical action with the silicon (Si) component in the concrete, To protect the concrete from damage caused by moisture and salt.

It has been used mainly in the past, but its waterproof performance is less than that of coating system, sheet system, and packing system waterproofing agent, and it is hardly applied at present.

Second, the sheet type waterproofing agent has an advantage of excellent waterproof effect and good adhesion to the pavement layer.

In order to prevent breakage by construction load, the surface is treated with glass fiber and it can be applied irrespective of the surface condition of the bottom plate.

However, there is a disadvantage that repair work is difficult and adhesion to bridge deck is insufficient.

However, recently, new methods of reinforcing glass fiber in sheet systems have been supplemented with disadvantages of sheet type waterproofing agents to improve strength and adhesion.

Third, packaged waterproofing agents are generally used as goos asphalt, and in the UK and Europe, mastic asphalt is also used.

It is mainly applied to steel decking, and it has an advantage of obtaining effective waterproofing on the joint part of the bottom plate.

Fourth, the coating system waterproofing agent has an advantage that it can be easily applied at the time of repair work, and it has excellent waterproof effect because of its excellent adhesion with the bridge deck.

However, there is a disadvantage that the adhesive strength to the packing layer is insufficient. In order to solve these problems, silica sand is sprayed on the waterproof layer to improve the adhesion strength with the asphalt layer.

Coating systems can be classified into synthetic rubber coating systems, asphalt coating systems and epoxy resin coating systems. Among them, epoxy resin coating waterproofing agent is excellent in adhesion to concrete, but there is a problem that an asphalt mixture should be installed within the resin time of the resin in order to ensure adhesion with the asphalt pavement.

In connection with the bridge waterproofing method, the conventional bridge waterproofing method includes a complete waterproofing method, a rubber coating film waterproofing method, an asphalt sheet waterproofing method, and a rubberized asphalt method.

The finished waterproofing method has a problem that the waterproofing function is rendered ineffective when it has been used for a long time or cracks, and the rubberized asphalt method is widely used as an unexposed waterproofing, but has a problem of weathering due to aging phenomenon.

The waterproofing methods were generally excellent in waterproofing performance, but the peeling phenomenon occurred because the concrete layer, the waterproof layer and the ascon layer were not integrated and there was a problem in adhesion.

In order to solve these problems, adhesion of silica sand or aggregate to unevenness was made to improve adhesion with ascon. However, as the waterproof layer is slackened due to the rise in temperature in summer, the silica sand that fixes the ascon layer and the waterproof layer is separated from the ascon layer, There is a problem that cracks and irregularities are generated on the bottom of the ascon.

The background art of the present invention is disclosed in Korean Patent Registration No. 10-0883743 (entitled " bridging waterproofing method using a bridging waterproofing composition of bridges or concrete structures, published on Feb. 12, 2009, entitled "

Since the general bridging waterproof layer is disposed between the asphalt layer and the bridges and is made of a color similar to that of the asphalt, even if the asphalt layer is broken and the waterproof layer is exposed, the administrator can not easily judge the exposure of the bridging waterproof layer. There is a problem that can be overcome.

Therefore, there is a need for improvement.

The present invention relates to a bridge or a concrete structure for allowing an operator to determine whether a repair operation is proceeded due to discoloration of a portion exposed to the outside of the asphalt when water is introduced into the bridge as a result of breakage of the asphalt on the bridge or concrete structure, And a cross-face waterproofing method using the same.

The present invention relates to an adhesive layer applied to the face of a bridge or a concrete structure; A waterproof sheet installed on the face by the adhesive layer to prevent moisture from entering the face; And a display interposed between the waterproof sheet and the face and being discolored when water is in contact therewith.

The display unit of the present invention may further comprise: a nonwoven fabric closely adhered to the face; And a cobalt chloride solution which stains the nonwoven fabric in blue and changes color to red when water is in contact therewith.

The cobalt chloride solution of the present invention may further contain water added in a proportion of 70 to 90% by weight; And 10 to 30% by weight of a cobalt chloride powder; And the cobalt powder is dissolved in the water at 15 to 25 占 폚.

In the nonwoven fabric of the present invention, a protruding groove portion protruding toward the asphalt layer side is formed, and the column portion is inserted into the protruding groove portion.

The present invention also relates to a method of manufacturing a bridge structure, comprising: (a) a pretreatment step of removing and planarizing foreign matter from a bridge or a concrete structure; (b) an adhesive applying step of forming an adhesive layer by applying an adhesive to the face; (c) a display portion mounting step of placing the display portion on the cross-section and forming an adhesive layer on the display portion; (d) adhering a waterproof sheet to the display unit; And an installation step of installing an asphalt layer on the bridge face.

The bridge waterproofing apparatus of the bridge or concrete structure according to the present invention and the bridge maintenance method using the bridging or concrete structure are provided with a display unit which is discolored according to whether water is in contact or not between the bridge face and the waterproofing sheet so that the asphalt layer and the waterproof sheet are damaged, The color of the display portion may be discolored so that the maintenance work can be easily determined by the manager and the maintenance work can be started at the early stage of the breakage of the asphalt layer and the waterproof sheet, thereby preventing the water from penetrating into the cross- .

1 is a cross-sectional view of a bridging waterproofing device for a bridge or concrete structure according to an embodiment of the present invention.
Figure 2 is a flow chart illustrating a bridging waterproofing method using a bridging waterproofing device for a bridge or concrete structure in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a bridging waterproofing apparatus for bridges or concrete structures according to the present invention and a bridging waterproofing method using the same will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a cross-sectional view illustrating a bridge waterproofing apparatus for a bridge or a concrete structure according to an embodiment of the present invention. FIG. 2 is a cross-sectional waterproofing method using a bridgewaterproofing apparatus for a bridge or a concrete structure according to an embodiment of the present invention. Fig.

1 and 2, a bridge waterproofing apparatus for a bridge or concrete structure according to an embodiment of the present invention includes an adhesive layer 30 applied to a bridge 10 of a bridge or a concrete structure, A waterproof sheet 50 provided on the face 10 to prevent water from flowing into the face 10 and a waterproof sheet 50 interposed between the waterproof sheet 50 and the face 10 to change color And a display unit (70).

The waterproof sheet 50 is installed on the bridge 10 constituting the upper surface of the bridge or the concrete structure and the asphalt is installed on the bridge 10 so that the water penetrating into the asphalt 10 flows into the bridge 10, To the inside of the cross-sectional surface (10).

The display unit 70 is interposed between the waterproof sheet 50 and the bridge 10 so that when the asphalt layer 12 and the waterproof sheet 50 are broken and the display unit 70 is exposed, The repairing operation time of the asphalt layer 12 and the waterproof sheet 50 can be determined.

Therefore, since the asphalt layer 12 and the waterproof sheet 50 can be repaired at an early stage of the breakage of the asphalt layer 12 and the waterproof sheet 50, the breakage of the asphalt layer 12 and the waterproof sheet 50 progresses, It is possible to prevent moisture from flowing into the inside of the bridge 10 and to prevent the reinforcing bars inside the bridge or concrete structure from being corroded.

The display portion 70 includes a nonwoven fabric closely adhered to the face 10 and a cobalt chloride solution which stains the nonwoven fabric in blue and turns red when water comes in contact therewith.

The nonwoven fabric that is dyed in blue by the cobalt chloride solution is turned to red when the water is contacted with the waterproof sheet 50 and the asphalt layer 12 in the state that the nonwoven fabric is exposed to the outside of the waterproof sheet 50 and the asphalt layer 12, It is possible to easily determine the discoloration of the asphalt layer 12 and the waterproof sheet 50 and to determine the repairing operation timing of the asphalt layer 12 and the waterproof sheet 50.

Therefore, breakage of the asphalt layer 12 and the waterproof sheet 50 is progressed, and water can be prevented from entering into the bridge or concrete structure, thereby reducing the cost of maintenance of the bridge or concrete structure .

The cobalt chloride solution comprises water added at a ratio of 70 to 90% by weight and cobalt chloride powder added at a ratio of 10 to 30% by weight, and the cobalt powder is dissolved in water at 15 to 25 ° C.

When the cobalt chloride powder added to water is added in an amount of less than 10% by weight, it is difficult for the manager to recognize the color change of the nonwoven fabric. When the cobalt chloride powder is added in an amount exceeding 30% by weight, the cobalt chloride powder is dissolved in water There is a problem that it is difficult to easily perform the step of dyeing the nonwoven fabric.

The nonwoven fabric is provided with a protruding groove portion 72 protruding toward the asphalt layer 12 side. The protruding groove portion 72 is inserted with the pillar portion 80.

A portion of the nonwoven fabric protrudes upward from the protruding groove 72. The protruding groove 72 has a pillar 80 formed of synthetic resin.

The nonwoven fabric is provided with a plurality of protruding groove portions 72 which protrude toward the asphalt layer 12 while covering the column portion 80 so that the asphalt layer 12 and the waterproof sheet 50 are broken The protruding groove portion 72 protruding upward is exposed to the outside of the asphalt layer 12.

When the nonwoven fabric constituting the protruding groove portion 72 is exposed to the outside of the asphalt, when the moisture is contacted, the nonwoven fabric constituting the protruding groove portion 72 is changed to red so that the manager confirms the protruding groove portion 72, 12 and the waterproof sheet 50 can be determined.

Here, the shapes of the projecting groove portion 72 and the columnar portion 80 can be changed in various ways, and those skilled in the art can easily modify and implement the present invention. Therefore, A description thereof will be omitted.

Since the waterproof sheet 50 of the present invention includes a polyester material having a melting point of 250 degrees or higher, when the waterproof sheet 50 (or the waterproof sheet 50) is heated by the asphalt heated when the asphalt layer 12 is formed on the upper surface of the waterproof sheet, Can be prevented from melting.

As described above, since the waterproof sheet includes a polyester material having high melting point, it is a high-strength product that is resistant to heat, has good waterproof property, excellent water permeability, air permeability and form stability, and has excellent abrasion resistance, heat resistance, cold resistance and chemical resistance Do.

The cross-linked waterproofing method using the cross-linked waterproofing device for bridges or concrete structures according to one embodiment of the present invention will be described as follows.

A method of repairing a bridge 10 using a bridge 10 for a bridge or concrete structure according to an embodiment of the present invention includes a pretreatment step for removing and planarizing foreign matter at the bridge 10 of the bridge or concrete structure A step S10 of applying an adhesive to the face 10 to form an adhesive layer 30 and a step of attaching a display portion for placing the display portion 70 on the face 10 and applying an adhesive to the display portion A waterproof sheet adhering step S40 for adhering the waterproof sheet 50 to the display unit 70 and an installation step S50 for laying the asphalt layer 12 on the bridge 10.

First, the foreign material is removed from the bridge 10 constituting the upper surface of the bridge or concrete structure, and the planarization is performed by using a planer.

Thereafter, an adhesive containing an epoxy resin is applied to the cross-face 10 to form an adhesive layer 30.

When the adhesive layer 30 is formed on the face 10, the nonwoven fabric is seated on the face 10, and the operator inserts the column 80 into the plurality of protruding recesses 72 formed in the nonwoven fabric, (10).

Thereafter, an adhesive is applied to the upper surface of the nonwoven fabric again to form another adhesive layer 30 on the upper surface of the display portion 70.

At this time, the waterproof sheet 50 wound in a roll shape is adhered to the cross section 10 and the display section 70 while being unwound on the cross section 10 so as to prevent an air layer from being formed between the waterproof sheet 50 and the display section 70 When the air layer is formed between the waterproof sheet 50 and the bridge 10 and the display unit 70, the waterproof sheet 50 is cut at the site where the air layer is formed, and then the air layer is removed. (10) and the display portion (70).

Of course, it is possible to use the self-adhesive type waterproof sheet 50 in which the release sheet providing the adhesive force is provided without the adhesive layer 30, and this can be easily carried out by those skilled in the art, The detailed description of these drawings will be omitted.

After the seating of the waterproof sheet 50 is completed, the asphalt is cured and cured on the face 10, and the repair work of the face 10 is completed.

When the asphalt layer 12 and the waterproof sheet 50 are broken by the waterproofing apparatus 10 constructed as described above and the nonwoven fabric is exposed to the outside of the asphalt layer 12, moisture comes into contact with the nonwoven fabric, .

The protrusion groove portion 72 protruded upward by the column portion 80 is exposed to the outside of the asphalt layer 12 at the initial stage of the breakage of the asphalt layer 12 and the waterproof sheet 50, So that the breakage of the layer 12 and the waterproof sheet 50 can be recognized.

As a result, when the asphalt installed on the upper surface of the bridge or the concrete structure is broken and the water is introduced into the bridging surface, the color of the portion exposed to the outside of the asphalt is discolored, It is possible to provide a waterproofing apparatus and a cross-face waterproofing method using the same.

≪ Example 1 >

Cobalt chloride powder is added in a proportion of 10% by weight, water is added in a proportion of 90% by weight to prepare a cobalt chloride solution, and the nonwoven fabric is dyed.

≪ Example 2 >

15% by weight of cobalt chloride powder is added, and water is added at a ratio of 85% by weight to prepare a cobalt chloride solution, and the nonwoven fabric is dyed.

≪ Example 3 >

The cobalt chloride powder is added in a ratio of 200% by weight, water is added in a proportion of 80% by weight to prepare a cobalt chloride solution, and the nonwoven fabric is dyed.

<Example 4>

The cobalt chloride powder is added in a proportion of 30% by weight, water is added in a proportion of 70% by weight to prepare a cobalt chloride solution, and the nonwoven fabric is dyed.

&Lt; Comparative Example 1 &

The cobalt chloride powder is added in a proportion of 5% by weight, water is added in a proportion of 95% by weight to prepare a cobalt chloride solution, and the nonwoven fabric is dyed.

&Lt; Comparative Example 2 &

35 wt% of cobalt chloride powder is added, and water is added at a ratio of 65 wt% to prepare a cobalt chloride solution to dye the nonwoven fabric.

As shown in Table 1, when the cobalt chloride powder is added in an amount of less than 10% by weight, the nonwoven fabric can be dyed in blue, but the amount of cobalt chloride is insufficient and the degree of discoloration .

When the cobalt chloride powder is added in an amount exceeding 30% by weight, it can be understood that the cobalt chloride powder is not sufficiently dissolved in water, and thus the nonwoven fabric becomes difficult to dye.

Staining state Color change Example 1 Good Judgeable Example 2 Good Judgeable Example 3 Good Judgeable Example 4 Good Judgeable Comparative Example 1 Good Can not judge Comparative Example 2 Not dyeable Can not judge

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, although the bridge waterproofing device for a bridge or a concrete structure and the bridge waterproofing method using the bridge waterproofing device have been described as an example, the bridge waterproofing device for bridges or concrete structures, A cross-face waterproofing device and a cross-face waterproofing method may be used.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: Pavement 12: Asphalt layer
30: Adhesive 50: Waterproof sheet
70: display portion 72: projecting groove portion
80:

Claims (8)

An adhesive layer applied to the bridge or concrete structure bridges;
A waterproof sheet installed on the face by the adhesive layer to prevent moisture from entering the face; And
And a display unit interposed between the waterproof sheet and the bridge face, wherein the display unit is discolored when water is in contact therewith.
The display device according to claim 1,
A nonwoven fabric closely adhered to the face; And
And a cobalt chloride solution for dyeing the nonwoven fabric in blue and discolored in red when water is in contact therewith.
3. The method according to claim 2, wherein the cobalt chloride solution comprises:
Water added in a proportion of 70 to 90% by weight; And
A cobalt chloride powder added in a proportion of 10 to 30% by weight;
Wherein said cobalt powder is dissolved in said water at 15 to 25 占 폚.
3. The method of claim 2,
Wherein the nonwoven fabric has a protruding groove portion protruding toward the asphalt layer side, and a column portion is inserted into the protruding groove portion.
The method according to claim 1,
Wherein the waterproof sheet comprises a polyester material having a melting point of 250 DEG C or higher.
(a) a pretreatment step of removing foreign matter from the bridge or concrete structure and planarizing the bridge structure;
(b) an adhesive applying step of forming an adhesive layer by applying an adhesive to the face;
(c) a display section mounting step of placing the display section on the cross-section and applying an adhesive to the display section;
(d) adhering a waterproof sheet to the display unit; And
And a step of installing an asphalt layer on the bridges. The bridging waterproofing method using a bridging waterproofing device for bridges or concrete structures.
The display device according to claim 6,
A nonwoven fabric closely adhered to the face; And
Wherein the nonwoven fabric is dyed in blue and the cobalt chloride solution is changed to red when water is contacted.
8. The method according to claim 7, wherein the cobalt chloride solution comprises:
Water added in a proportion of 70 to 90% by weight; And
A cobalt chloride powder added in a proportion of 10 to 30% by weight;
Characterized in that the cobalt powder is dissolved in the water at 15 to 25 占 폚 by using a bridging waterproofing device for bridges or concrete structures.

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