KR101032451B1 - Bridge surface water-proof sheet - Google Patents

Abstract

PURPOSE: A bridge surface water-proof sheet is provided to enable efficient and easy construction by applying ascon by removing a release paper layer of a connection part of the bridge surface water-proof sheet and connecting self-adhesive connection parts. CONSTITUTION: A bridge surface water-proof sheet includes a main body(101) in which a longitudinal direction longer than a width direction and a connection part(103) formed along the longitudinal direction of the main body. The main body of the bridge surface water-proof sheet is produced by wide width of 1.5M to 2M. The width of the connection part is produced by 1/15~1/20 of the width of the main body.

Description

Interfacial Waterproofing Sheet and Interfacial Waterproofing Method Using Them {BRIDGE SURFACE WATER-PROOF SHEET}

The present invention relates to a crosslinked waterproof sheet and a crosslinked waterproofing method using the same, and more particularly, using a high elastic film having improved heat resistance as a central reinforcement to expand and contract along a severe thermal behavior as a center reinforcement, and the upper and lower portions of the center reinforcement. To a cross-sectional waterproof sheet having a waterproof layer and a cross-sectional waterproof method using the same.

In general, bridge bridges are separated by cracks caused by physical and chemical deterioration, such as rainwater penetration and accumulated vehicle loads, and the steel is corroded and the bond strength between concrete materials is degraded. The deterioration caused by the repeated freezing and thawing action and the corrosion of reinforcing bars due to chloride penetration of the snow removal agent not only reduce the durability and life of the bridge but also affect the safety issues.

Therefore, building structures such as bridges and overpasses should be perfect for waterproofing bridges.

In general, the waterproofing method of the cross-linking method, which is commonly used, is a coating waterproofing method and rubberized asphalt method.

Coating waterproofing method is to apply an aqueous or oily liquid type waterproofing agent to the base surface of the sphere with a roll, spray, brush, etc. to evaporate water or solvent to form a film, which is easy for construction with severe bending and complex structure.

However, some of the coating waterproofing materials used in the waterproofing method of the coating are poor in adhesion with the upper ascon layer and have to evaporate moisture or solvent after application, thereby causing problems such as construction delays such as air delay, occurrence of pinholes and poor thickness. May occur.

In addition, in the rubberized asphalt method, the core reinforcing material and the rubberized asphalt as a main raw material is manufactured in advance in the form of a sheet, and the construction, the lack of watertightness of the joints between adjacent sheets becomes a problem, in order to prevent this, the joints are heated with a torch or the like. As a result of thermal fusion, the physical properties of the rubberized asphalt were changed, and due to the lack of adhesion between the sheet and the concrete structure, the floating phenomenon occurred, and the leaked water flowed under the sheet waterproof layer, thereby causing water-resistant defects on the weak parts of the concrete structure.

In addition, when a heavy truck or the like passes continuously, there is a problem in that a push or separation phenomenon of the upper asphalt concrete layer occurs.

The present invention has been made to solve such a problem, the object of the present invention is to improve the bonding force with the ascon layer or concrete layer to facilitate the construction, and also to minimize the curing and curing time while constructing the waterproof layer to extend the construction period. It is possible to shorten, improve the responsiveness to the crack of the bridge waterproof layer to improve the overall waterproofing performance, the cross-section waterproof sheet and the bridge waterproofing that does not easily break the waterproof layer even if the jungle or separation of the upper ascon layer occurs To provide a way.

Cross-section waterproofing sheet according to an embodiment of the present invention includes a main body longer in the longitudinal direction than the width direction, and the connection joint formed along the longitudinal direction of the main body,
The main body and the connection portion includes a heat-resistant central reinforcement stretchable along the cross-section, and self-adhesive synthetic rubber waterproof layer applied to the upper and lower portions of the central reinforcement,
The main body is a hot melt layer is formed on the self-adhesive synthetic rubber waterproof layer, the connection portion comprises a release paper layer on the self-adhesive synthetic rubber waterproof layer,
Width of the connection joint portion is characterized in that 1/15 ~ 1/120 of the width of the main body.

The cross-section waterproofing method using a cross-sectional waterproof sheet according to another aspect of the present invention,

To clean up the concrete base material,

Forming a primer layer by applying a primer on the base substrate;

On the concrete base substrate through the primer layer

A main body having a longitudinal direction longer than a width direction, and a connecting joint formed along the longitudinal direction of the main body, wherein the main body and the connecting joint are stretchable along a cross-section, a heat resistant central reinforcing member, and applied to upper and lower portions of the central reinforcing member. It includes a self-adhesive synthetic rubber waterproof layer, the main body is a hot melt layer is formed on the self-adhesive synthetic rubber waterproof layer, the connection joint is to prepare a cross-section waterproof sheet comprising a release paper layer on the self-adhesive synthetic rubber waterproof layer Steps,

 Arranging the connecting joints of the waterproof sheet in the longitudinal direction alternately;

Removing a release layer from the connection joint;

Forming a joint part by overlapping an end portion of the main body of an adjacent cross-sectional waterproof sheet on the connection joint part from which the release layer is removed;

And forming an ascon layer by arranging an ascon on top of the crosslinked waterproof sheets in which the joint is integrated.

According to an embodiment of the present invention, the hot melt layer of the cross-sectional waterproof sheet is melted and solidified at the time of laying the upper ascon layer and integrated with the upper ascon layer, and is combined with the self-adhesive synthetic rubber waterproof layer having good affinity with the lower concrete layer. It does not occur or separation phenomenon, can not be easily lifted or broken, it is excellent in workability and can reduce the defect rate.

In addition, according to an embodiment of the present invention, by using a thermoplastic polyurethane film having a high heat resistance as the center reinforcing material can be in close contact without being bound by the shape of the base substrate, the person formed in the upper and lower centering around the center reinforcing material It is possible to use the joint synthetic rubber waterproof layer and the hot melt layer serving as the surface protective layer, the bonded reinforcing layer, and the release layer of the self-adhesive synthetic rubber waterproof layer to make the joint construction more tight and perfect.

In addition, according to an embodiment of the present invention, since the self-adhesive synthetic rubber waterproof layer of the crosslinked waterproof sheet is made of non-vulcanized butyl rubber that is amorphous and permanently maintained in a gel state, almost no phenomena and the heat resistance is 150 degrees or more. No matter how high the solar heat in the summer, even if the high temperature does not crack like asphalt, because it has self-adhesion, the bonding force is increased when passing through the vehicle, there is no problem of gap or lack of adhesion.

1 is a cross-sectional view of a bridge using a cross-sectional waterproof sheet according to an embodiment of the present invention.
2 is a schematic perspective view of a cross-section waterproofing sheet according to an embodiment of the present invention.
3 is a cross-sectional view taken along the line III-III of FIG. 2.
Figure 4 is a flow chart for explaining a cross-sectional waterproof method using a cross-sectional waterproof sheet according to an embodiment of the present invention.
5A and 5B are cross-sectional views illustrating a planarizing method of connecting joints between bridged waterproof sheets in a bridged waterproofing method using a crosslinked waterproof sheet according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

Hereinafter, a cross-sectional waterproof sheet according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of the cross-section of the cross-section is formed using the waterproofing sheet in accordance with an embodiment of the present invention, Figure 2 is a schematic perspective view of the waterproofing sheet in accordance with an embodiment of the present invention, Figure 3 is Sectional view taken along line III-III.

As shown in Figure 1, using the cross-section waterproofing sheet according to an embodiment of the present invention, the cross-section is a bridge, that is, the primer layer is applied to the top of the concrete base substrate 10 of the bridge top plate or elevated road (20) is formed, the cross-section waterproofing sheet 100 according to an embodiment of the present invention to be able to adhere to the behavior of the concrete base material 10 via the primer layer 20 by self-supporting It is tightly coupled, the ascon packaging layer 30 formed by packing and compacting about 80 to 120 ℃ ascon on the cross-section waterproof sheet 100 is formed.

As shown in Figures 2 and 3, the cross-sectional waterproof sheet 100 according to an embodiment of the present invention is formed along the longitudinal direction of the main body 101, the longitudinal direction longer than the width direction, the main body 101 Connection joint 103 is included.

The main body 101 of the cross-section waterproof sheet 100 according to an embodiment of the present invention is preferably produced in a wide width of approximately 1.5M to 2M in consideration of the width of the bridge, the width of the connection joint 103 It is preferable to produce the 1/15 to 1/120 of the width of the main body 101. This is because the elasticity of the main body 101 is very large, in consideration of the degree of stretching at the time of pressing with the roller 50, the separation between the cross-sealing waterproof sheet 100 according to the fracture or crushing at the connection joint 103 This is to prevent the phenomenon.

The main body 101 and the connection joint 103 of the cross-section waterproofing sheet 100 according to an embodiment of the present invention is a central reinforcement (110) made of a high elastic film to improve the heat resistance to stretch along a severe thermal behavior cross section ), And a self-adhesive upper and lower double waterproof layer 120 made of a self-adhesive synthetic rubber waterproof layer 121 and a self-adhesive synthetic rubber waterproof layer 123 applied to the lower portion of the central reinforcing material 110, the The main body 101 has a hot melt layer 30 is formed on the upper self-adhesive synthetic rubber waterproof layer 121, the release paper layer 40 on the upper self-adhesive synthetic rubber waterproof layer 121 of the connection joint 103. ).

Of course, the release paper layer 40 may be further included in the lower self-supporting synthetic rubber waterproof layer 123 of the cross-section waterproof sheet 100 to facilitate transport and movement in the form of a roll.

When the release paper layer 40 is made of paper or the like, it is separated and removed.

According to an embodiment of the present invention, the central reinforcing material 110 is prepared with a thermoplastic polyurethane film, the hardness is produced in the thermoplastic polyurethane film 90 or more.

It is checked whether the hardness of the thermoplastic polyurethane film is 90 or more, and the thermoplastic polyurethane film having a hardness of 90 or more is placed in a furnace and heat-treated for about 24 to 48 degrees at a temperature of 80 ° C to 120 ° C.

Test Items Type of core reinforcement Comparative Example 1 Experimental Example 1 Experimental Example 2 Experimental Example 3 Hardness 80kgf / cm2 90kgf / cm2 90kgf / cm2 95kgf / cm2 Heat resistance before heat treatment 110 ℃ 112 ℃ 115 ℃ 117 ℃ Heat resistance after heat treatment 115 117 125 126

As shown in Table 1, Comparative Example 1 is a case of heat-resistant 100 ℃ to a general polyurethane film, but the heat resistance is 110 ℃, it can be seen that easily broken, Experimental Example 1, Experimental Example 2, Experimental Example 3 When the hardness was increased to 90 or more and heat-treated at a temperature of 80 ° C to 120 ° C for 12 hours to 24 hours, it was found that the heat resistance was increased by 5 to 10 ° C.

Thus, the heat resistance of the polyurethane film is increased through the heat treatment process because the incomplete structure is rearranged through the heat treatment process to restructure the atomic structure to further strengthen the original properties.

As such, when the hardness is increased to 90 or more and heat treated at a temperature of 80 ° C. or higher for 12 hours to 24 hours, the heat resistance becomes 125 ° C. or higher, and when the ascon is laid to form the ascon layer 30, about 80 to 120 ° C. Since the temperature drops in the air when laying the ascon of the temperature of the ascon contacting the cross-sheet waterproofing sheet 100 is about 100 ℃ can prevent the phenomenon of melting or drying the film.

That is, the crosslinked waterproof sheet 100 according to an embodiment of the present invention uses a non-woven fabric or P.P. It is possible to prevent breakage due to heat or change in physical properties that may occur when inserting a woven reinforcement material.

On the other hand, the cross-section waterproofing sheet 100 according to an embodiment of the present invention is a self-adhesive synthetic rubber waterproof layer 121 and the self-adhesive synthetic rubber waterproof layer 123 applied to the upper portion of the center reinforcement 110. Since the self-adhesive upper and lower double waterproof layer 120 is made, the waterproof effect can be further increased.

The self-supporting upper and lower double waterproof layer 120 provides a double waterproof layer 20 around the center reinforcement 110 in particular, and the double waterproof layer 20 uses butyl rubber (IIR) as a main polymer to reinforcement, filler, and aging. By uniformly mixing the prevention material may be combined integrally by the corona treatment and coating on the center reinforcement (110).

In one embodiment of the present invention, the self-supporting upper and lower double waterproof layer 120 is composed of 15% by weight of butyl rubber, 10% by weight of carbon reinforcing agent, 1% by weight of plasticizer, 25% by weight of additives, and 49% by weight of heavy carbon filler. It is desirable to be able to maintain the gel state almost permanently.

The self-adhesive upper and lower double waterproof layer 120 formed as described above is a vulcanized synthetic rubber sheet, which does not generate harmful substances in the air and has excellent elasticity and adhesiveness, so that it can be integrated with each other without a separate adhesive, excellent waterproofness, Since it can provide soundproofing, anticorrosion and dustproof, it can produce a double waterproof effect and can adapt to the behavior of the concrete base material 10 which is a heterogeneous material.

In addition, in the joint portion where the cross-sectional waterproof sheet 100 is connected, the self-supporting upper and lower double waterproof layer 120 overlaps, and the central reinforcement 110 is sufficiently extended to seal the side wall or the gap to seal moisture. You can prevent it from coming out easily.

On the other hand, the hot melt layer 130 disposed on the upper self-adhesive synthetic rubber waterproof layer 121 of the main body 101 is a molten state at a predetermined temperature, but usually solidified to provide a hard surface of the cross-sectional waterproof sheet 100 It protects the surface, gives durability, and may serve to prevent the upper portion of the cross-water resistant sheet 110 to stick to each other during transport and movement.

The hot melt layer 130 is blended with an ester plasticizer having a melting point (mp) of 80 to 90 ° C. in an amount such that the viscosity becomes 5,000 cps or less when the composition is applied to the hot melt polyurethane adhesive composition, and the plasticizer is glyceryl. Tribenzoate, dimethyl isophthalate, pentaerythritol tetrabenzoate, bis-cumyl-phenyl phthalate, bis-cumyl-phenyl isophthalate, dicyclohexyl phthalate, hydroabiethyl phthalate, dicyclohexyl phthalate, ethylene It is preferable to be selected from the group consisting of glycol distearate, rosin ester resin and mixtures of two or more thereof.

The hot melt layer 130 configured as described above solidifies integrally with the ascon layer 30 as the temperature of the ascon decreases when the ascon layer 30 is formed by laying the ascon having an adhesive strength of about 80 to 120 ° C. Can increase the adhesive strength.

Meanwhile, even when the temperature of the ascon layer 30 is 50 ° C. or higher in summer, the hot melt layer 130 once solidified may be maintained as it is below the melting point.

The hot melt layer 130 may further include a fiber network layer 133 to increase the durability in addition to the hot melt film layer 131.

The fiber network layer 133 may be made of jute or synthetic fiber with good durability.

Now, with reference to Figures 4, 5A and 5B will be described a bridge waterproofing method using a bridge waterproof sheet according to an embodiment of the present invention.

Figure 4 is a flow chart for explaining a cross-sectional waterproofing method using a cross-sectional waterproof sheet according to an embodiment of the present invention, Figures 5a and 5b is a cross-sectional waterproofing method using a cross-sectional waterproof sheet according to an embodiment of the present invention It is sectional drawing explaining the planarization method of the joint part between the crosslinked waterproof sheets.

Referring to Figure 4, the cross-section waterproofing method using a cross-sectional waterproof sheet according to another aspect of the present invention to clean up the concrete base material 10 (S110), and by applying a primer on the base material primer layer 20 ) Forming a connection 120 of the bridge waterproofing sheet 100 to the bridge waterproofing sheet 100 on the concrete base material 10 through the step 120 and the primer layer 20. Arranged in the longitudinal direction so that alternately appear (S130), removing the release layer 140 from the connection joint 103 (S140), and the connection is removed the release layer 140 Step (S150) to form a joint by overlapping the end portion 101a of the main body 101 of the neighboring cross-sectional waterproof sheet 100 'on the tongue 103 (S150), and by pressing the roller 50 along the joint Planarizing step 160 and the joint portion is formed on the cross- Laying the ascon to form the ascon layer 30 (S170).

When the asphalt concrete is laid, the temperature of the asphalt concrete is about 80 ° C. or more, and the hot melt layer 140 is melted by such a temperature, and the hot melt layer 140 is also solidified when the asphalt concrete is solidified. S180) may further include.

As shown in FIG. 5A, the end portion 101a of the main body 101 of the adjacent cross-section waterproofing sheet 100 ′ overlaps and overlaps on the connection joint 103 from which the release layer 140 is removed. When forming the portion, the lower self-adhesive synthetic rubber waterproof layer 123, the central reinforcing material 11, the upper self-adhesive synthetic rubber waterproof layer 121 of the cross-sectional waterproof sheet 100 and the lower portion of the cross-sectional waterproof sheet (100 '). Self-adhesive synthetic rubber waterproof layer 123, the central reinforcing material 11, the upper self-adhesive synthetic rubber waterproof layer 121 is successively laminated.

That is, the lower self-adhesive synthetic rubber waterproof layer 123 of the neighboring cross-coated waterproof sheet 100 ′ of the same material may be hermetically adhered to the upper self-adhesive synthetic rubber waterproof layer 121 of the one cross-sectional waterproof sheet 100. Can be.

As shown in FIG. 5B, since the joints are made of a material that is elastic and extensible at the time of pressurized heating with the rollers 50 at a predetermined temperature and a predetermined load, the boundary lines can be crushed and flattened while overlapping them.

10: base material
20: primer layer
30: ascon packaging layer
100: bridge waterproof sheet
101: body
103: connecting joint
110: center reinforcement
120: upper and lower double waterproof layer
130: hot melt layer
140: release layer

Claims (12)

delete delete delete delete It includes a main body longer in the longitudinal direction than the width direction, and the connection joint formed along the longitudinal direction of the main body,
The main body and the connection portion includes a heat-resistant central reinforcement stretchable along the cross-section, and self-adhesive synthetic rubber waterproof layer applied to the upper and lower portions of the central reinforcement,
The main body is a hot melt layer is formed on the self-adhesive synthetic rubber waterproof layer, the connection portion comprises a release paper layer on the self-adhesive synthetic rubber waterproof layer,
The width of the connection joint portion is a cross-sectional waterproof sheet is 1/15 ~ 1/120 of the width of the main body. The method of claim 5, wherein
The hot melt layer is a cross-sectional waterproof sheet is added to the hot melt polyurethane adhesive composition, the ester plasticizer having a melting point (mp) of 60 ~ 110 ℃. The method according to claim 6,
The plasticizer is glyceryl tribenzoate, dimethyl isophthalate, pentaerythritol tetrabenzoate, bis-cumyl-phenyl phthalate, bis-cumyl-phenyl isophthalate, dicyclohexyl phthalate, hydroabiethyl phthalate, dicyclo A cross-sectional waterproof sheet selected from the group consisting of hexyl phthalate, ethylene glycol distearate, rosin ester resin and mixtures of two or more thereof. The method according to claim 6,
The upper self-adhesive synthetic rubber waterproofing layer and the lower self-adhesive synthetic rubber waterproofing layer is 15% by weight of butyl rubber, 10% by weight of carbon reinforcing agent, 1% by weight of plasticizer, 25% by weight of additives, and 49% by weight of bicarbonate filler. To clean up the concrete base material,
Forming a primer layer by applying a primer on the base substrate;
On the concrete base substrate through the primer layer
A main body having a longitudinal direction longer than a width direction, and a connecting joint formed along the longitudinal direction of the main body, wherein the main body and the connecting joint are stretchable along a cross-section, a heat resistant central reinforcing member, and applied to upper and lower portions of the central reinforcing member. It includes a self-adhesive synthetic rubber waterproof layer, the main body is a hot melt layer is formed on the self-adhesive synthetic rubber waterproof layer, the connection joint is to prepare a cross-sectional waterproof sheet comprising a release layer on the self-adhesive synthetic rubber waterproof layer Steps,
Arranging the connecting joints of the waterproof sheet in the longitudinal direction alternately;
Removing a release layer from the connection joint;
Forming a joint part by overlapping an end portion of the main body of an adjacent cross-sectional waterproof sheet on the connection joint part from which the release layer is removed;
Cross-sealing method comprising the step of forming an ascon layer on the upper surface of the cross-section waterproofing sheet integrated with the joint. The method of claim 9,
When the asphalt concrete is laid, the temperature of the asphalt concrete is 80 to 120 ℃, when the temperature of the asphalt concrete falls, the hot melt layer comprising the step of solidifying as well. The method of claim 9,
The core reinforcing material is a cross-sectional waterproofing method consisting of a thermoplastic polyurethane film heat-treated at 80 ℃ to 120 ℃ 12 to 24 hours. The method of claim 9,
The width of the joint portion is a cross-sectional waterproof method of 1/20 of the width of the main body.

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