KR102639436B1 - Thermoplastic double-composite waterproofing method and waterproofing structure for bridges with smooth blisterling discharge - Google Patents

Abstract

The present invention relates to a thermoplastic double composite waterproofing method and waterproofing structure for bridge surfaces that facilitate the discharge of blistering. More specifically, it relates to fine cracks and damage caused by cracks present on the surface of the concrete structure, which is the floor slab layer, when paving the bridge surface of a bridge. , suppresses durability deterioration, increases the strength and waterproofing of concrete structures, and above all, eliminates blistering caused by moisture contained in the slab during double composite waterproof asphalt pavement consisting of a coating layer and a sheet layer, preventing interfacial separation and potholes. This relates to a thermoplastic double composite waterproofing method and waterproofing structure for bridge surfaces that allow smooth discharge of blistering, which has been improved to resolve the deterioration of the bridge surface surface, such as the occurrence of cracks and deterioration of asphalt durability.

Description

Thermoplastic double-composite waterproofing method and waterproofing structure for bridges with smooth blisterling discharge}

The present invention relates to a thermoplastic double composite waterproofing method and waterproofing structure for bridge surfaces that facilitate the discharge of blistering. More specifically, it relates to fine cracks and damage caused by cracks present on the surface of the concrete structure, which is the floor slab layer, when paving the bridge surface of a bridge. , suppresses durability deterioration, increases the strength and waterproofing of concrete structures, and above all, eliminates blistering caused by moisture contained in the slab during double composite waterproof asphalt pavement consisting of a coating layer and a sheet layer, preventing interfacial separation and potholes. This relates to a thermoplastic double composite waterproofing method and waterproofing structure for bridge surfaces that allow smooth discharge of blistering, which has been improved to resolve the deterioration of the bridge surface surface, such as the occurrence of cracks and deterioration of asphalt durability.

In general, bridge decks are exposed to harsh natural environments such as vehicle loads, rain, snow, and exposure to ultraviolet rays from direct sunlight.

In addition, deflection due to repetitive loads caused by vehicles, and contraction and expansion due to vibration and temperature changes cause cracks in the bridge deck. At this time, moisture penetrates into the crack area, causing freezing of the concrete, corroding the internal reinforcing bars, and causing concrete damage. accelerates the cracking of

In addition, chloride from the use of snow removers in the winter penetrates and accelerates corrosion of reinforcing bars. In order to ensure the safety and durability of bridges, waterproofing methods are applied to the bridge surfaces.

Existing bridge waterproofing methods can be classified into sheet-type waterproofing methods, film-type waterproofing methods, and composite waterproofing methods.

First, the sheet-type waterproofing method can be divided into the torch fusion method, which uses a torch on the lower surface of the sheet to melt the sheet and adheres it to the substrate, and the self-adhesive method, which uses the self-adhesive performance of the waterproof sheet to adhere to the substrate.

The paint-film waterproofing method is divided into room-temperature film waterproofing, which forms a film by dissolving synthetic rubber in an organic solvent such as toluene or xylene, and a heat-melt film waterproofing method, which uses synthetic rubber, etc. dissolved in high-temperature asphalt and reheated during construction. do.

The composite waterproofing method is a method of simultaneously constructing a coating waterproofing material and a sheet waterproofing material. It is a waterproofing method that combines the characteristics of a seamless waterproofing layer, which is an advantage of a coating waterproofing material, and the formation of a constant waterproof layer thickness, which is an advantage of a sheet.

As mentioned above, in the case of the sheet-type waterproofing method for bridge surfaces, it may result in a decrease in physical properties due to changes in the physical properties of the modified asphalt due to deterioration due to direct heating, and may not adhere to the lower surface due to incomplete melting of the lower film. There is a problem: torch gas and melting gas are generated, creating air pockets, which can cause potholes after laying asphalt concrete, and excessive occurrence of overlapping joints can cause water leaks.

In other words, when asphalt is paved after the sheet layer is formed, the moisture remaining in the concrete floor slab changes to blistering due to the heat of about 140-160℃ generated during paving, forming air pockets. I do it.

Then, these air pockets weaken the adhesive performance between the waterproof layer and the concrete floor layer, drastically reducing the durability of the asphalt.

To improve this, a number of composite waterproofing methods, including [prior art literature], have been disclosed. However, since air vents are formed when the waterproof sheet is completely made, the waterproof sheet is wound for packaging and management, and it is easy to tear at that time. Therefore, the air vents in the [prior art literature] cannot be formed in large numbers and can only be localized, which reduces the air vent effect.

In particular, in the case of [prior art literature], the reason why the air vent has to be formed last is because if the air vent is formed first, the impregnating liquid that impregnates the nonwoven fabric does not easily burst when the air vent is blocked. This is because the composition of the impregnating liquid has high bonding and adhesion properties.

Registered Patent Publication No. 10-1988801 (June 5, 2019) Heated composite waterproofing method for bridge surfaces

The present invention was created in consideration of various problems in the prior art as described above to solve them, and suppresses micro cracks, damage caused by cracks, and decreased durability on the surface of the concrete structure, which is the floor slab layer, when paving the bridge surface. This increases the strength and waterproofing of the concrete structure, and above all, it eliminates blistering caused by moisture contained in the slab when paving with double composite waterproof asphalt consisting of a coating layer and a sheet layer, which leads to interfacial separation, occurrence of potholes, and deterioration of asphalt durability. The main purpose is to provide a thermoplastic double composite waterproofing method and waterproofing structure for bridge surfaces with improved blistering discharge, which has been improved to resolve the deterioration phenomenon of bridge surface pavements such as bridges.

The present invention is a means for achieving the above object, comprising: a first step of applying an adhesive on a slab, which is a concrete floor; A second step of forming a coating layer by applying a coating material on the adhesive; A third step of forming a waterproof layer by laying a waterproof sheet on the coating layer; In the thermoplastic double composite waterproofing method for bridge surfaces, including the fourth step of paving asphalt on the waterproofing layer; The coating material used in the second step is 15-20% by weight of hydrocarbon resin, 5-15% by weight of SBR (Styrene-Butadiene Rubber), 5-10% by weight of asphalt emulsifier, and the remaining thermoplastic elastomer ( It provides a thermoplastic double composite waterproofing method and waterproofing structure for bridge surfaces with smooth blistering discharge, which is characterized by being composed of Thermoplastic Elastomer.

At this time, when composing the coating material, 10 parts by weight of vinyl pyrrolidone, 10 parts by weight of 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol, based on 100 parts by weight of the coating material composition. It can be composed by adding 5 parts by weight of boron nitride powder.

In addition, the waterproof sheet is made by impregnating the central substrate with a binder composition to have a layer structure of sand-binder-central substrate-binder-sand with a thickness of 1.5-2.5mm, and the central substrate is made of polyester, polypropylene, or polyethylene. It may be any one fiber fabric.

In addition, the binder composition contains 15-20% by weight of hydrocarbon resin, 2.5-5.0% by weight of alkoxylated alcohol, 5-15% by weight of SBR (Styrene-Butadiene Rubber), and perfluorine (2, 2.5-4.5% by weight of 2-dimethyl-1,3-dioxole (Perfluoro(2,2-dimethyl-1,3-dioxole)), 5-10% by weight of Asphalt Emulsifier, and the remaining Thermoplastic Elastomer ) can be composed.

In addition, the present invention relates to an adhesive applied on a slab, which is a concrete floor; A coating material applied on the adhesive to form a coating layer; A waterproof sheet installed on the coating material to form a waterproof layer; Also provided is a thermoplastic double composite waterproof structure for a bridge surface with smooth blistering discharge, which includes asphalt packed on the waterproof sheet.

According to the present invention, the strength and waterproofness of the concrete structure are increased by suppressing fine cracks, damage caused by cracks, and durability deterioration existing on the surface of the concrete structure, which is the floor slab layer, when paving the bridge surface, and, above all, the coating layer and the sheet layer. By resolving blistering caused by moisture contained in the slab during double-layer composite waterproof asphalt paving, improved effects can be obtained to eliminate deterioration of the bridge surface surface such as interfacial separation, occurrence of potholes, and deterioration of asphalt durability. there is.

1 is an exemplary flow chart showing a waterproofing method according to the present invention.
Figure 2 is an exemplary photograph of the central substrate constituting the waterproof sheet according to the present invention.
Figure 3 is an exemplary cross-sectional view showing a waterproof structure formed by the waterproofing method according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in more detail.

Prior to describing the present invention, the following specific structural and functional descriptions are merely illustrative for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms. It should not be construed as limited to the embodiments described herein.

The concrete deck, which is the bridge surface of the bridge to which the present invention belongs, not only receives continuous vertical load due to passing vehicles, but also deteriorates faster than other parts of the bridge because it is always exposed, so frequent repair or replacement is required. .

During such repair or replacement work, the construction of waterproofing material for bridge surface waterproofing is very important because the durability of the deck can be improved only by blocking water from penetrating from the concrete top plate to the top plate.

In other words, bridge waterproofing not only protects the bridge surface against the impact of traffic loads and weather effects such as rainwater intrusion or temperature changes, but also plays an important role in ensuring comfortable driving for passing vehicles.

For this purpose, the thermoplastic double composite waterproofing method for bridge surfaces according to the present invention is configured to increase the waterproofing effect through a two-layer waterproofing concept using a combination of sheet type and coating type.

In other words, it relates to a double composite waterproofing method in which a waterproof sheet layer is further formed on top of the coating layer.

More specifically, as shown in the example of Figure 1, the present invention includes a first step of applying an adhesive on a slab, which is a concrete floor; A second step of forming a coating layer by applying a coating material on the adhesive; A third step of forming a waterproof layer by laying a waterproof sheet on the coating layer; It includes a fourth step of paving asphalt on the waterproof layer.

At this time, the adhesive used in the first step is 10 parts by weight of trimethyl-2.4-pentanediol-1.3-isobutyrate, 15 parts by weight of PBAT (Poly-Butylene Adipate Terephthalate), and sodium silicate based on 100 parts by weight of polyurethane resin. It is made by mixing 8.5 parts by weight of (Na ₂ SiO ₃ ) powder and 10 parts by weight of benzoic acid vinyl ester.

Here, the trimethyl-2.4-pentanediol-1.3-isobutyrate (2.4-trimetyl-1.3-pentandiol isobutyrate) has high stability against hydrolysis and oxidation, and has a high viscosity, while improving both elasticity and fluidity and improving adhesion. Contributes to strengthening

In addition, PBAT (Poly-Butylene Adipate Terephthalate) is added to increase elongation and provide flexibility, processability, and durability to the adherend.

In addition, sodium silicate (Na ₂ SiO ₃ ) powder penetrates and fills the pores, cracks, and cracks of concrete, gelling and densifying them, maintaining high water resistance, tensile strength, and compressive strength to increase durability, and to inhibit neutralization. Contribute.

In addition, benzoic acid vinyl ester is a material corresponding to CAS number 769-78-8 and absorbs ultraviolet rays through photodeterioration of ultraviolet rays to protect the surface of the adherend, suppress cracking, and strengthen adhesion. It is added for

Meanwhile, the coating material used in the second step is 15-20% by weight of hydrocarbon resin, 5-15% by weight of SBR (Styrene-Butadiene Rubber), 5-10% by weight of asphalt emulsifier, and the remaining thermoplastic. It is composed of elastomer (Thermoplastic Elastomer).

At this time, the hydrocarbon resin is a synthetic resin made by the automatic reaction of hydrocarbons (unlike olefins) in the presence of aluminum chloride or sulfuric acid. In particular, those made by heating the isoprene-free C5 fraction from gasoline pyrolysis or the high boiling point fraction of gasoline pyrolysis (pyrolysis oil) in the presence of aluminum chloride are used.

In other words, it is easy to understand that the hydrocarbon resin is a soft solid or rubber-like material made by combining unsaturated components of coal tar, rosin, and petroleum, and performs the function of strengthening adhesion.

In addition, the SBR (Styrene-Butadiene Rubber) has the characteristics of reducing penetration, increasing softening point, increasing elongation, increasing viscosity at high temperatures, and greatly improving temperature sensitivity.

In addition, the asphalt emulsifier is a solution in which emulsifiers and stabilizers are added to asphalt. It is an adhesive that has moisture-proof and waterproof functions so that asphalt can adhere well to the ground when paving with asphalt. It is relatively stable and cures quickly. It has advantages. Typically, it is composed of 25-60% by weight of water, 0.1-2.5% by weight of emulsifier, and the remainder asphalt.

In addition, the thermoplastic elastomer is a polymer asphalt binder that has both rubber and plastic properties, and it is preferable to use a polyurethane type.

Particularly preferably, AP-5 (general asphalt binder) can be used.

The AP-5 refers to a binder corresponding to penetration degree 60-80, 25℃, 100g, 0.1mm, PG 64-22. In this case, in the expression 'PG 64-22', PG is Performance Grade and refers to the grade of asphalt binder. The number 64 refers to the 7-day average highest packaging temperature, and 22 refers to the lowest packaging temperature.

In addition, in the present invention, when constructing the coating material, 10 parts by weight of vinyl pyrrolidone, 1,3:2,4-bis (3,4-dimethylbenzyl) are added to 100 parts by weight of the coating material composition. Liden) can be prepared by adding 10 parts by weight of sorbitol and 5 parts by weight of boron nitride powder.

In this case, the vinyl pyrrolidone is a substance corresponding to CAS number 25086-89-9, and contributes to suppressing the occurrence of cracks, peeling, and potholes in the asphalt surface layer by suppressing the coarse growth of crystals contained in the composition. I do it.

And, the 1,3:2,4-bis(3,4-dimethylbenzylideno) Sorbitol (1,3:2,4-Bis(3,4-Dimethylobenzylideno) Sorbitol) is listed in CAS No. 135861-56-2. As a corresponding material, it is added to strengthen the heat resistance, crack resistance, and crack prevention of spherical adherends.

In addition, boron nitride has high thermal conductivity and effectively reflects heat to maintain heat dissipation, thereby contributing to stabilizing the asphalt surface layer.

On the other hand, the third step is a step of laying a waterproof sheet and attaching it to the coating layer, and before that, a pretreatment step of making the waterproof sheet must be performed.

The pretreatment step is a step of manufacturing a waterproof sheet to have a structure in which a binder is attached to both sides of the substrate and sand is attached to both sides.

That is, the waterproof sheet completed through the above pretreatment step is made to have a thickness of 1.5-2.5 mm with a layer structure of sand-binder-center base-binder-sand.

The central substrate may be a fibrous fabric made of polyester, polypropylene, or polyethylene, preferably a non-woven fabric.

And, as shown in the example of FIG. 2, this fiber fabric is impregnated with a binder composition in a state in which a plurality of ventilation holes are formed by punching, and a binder layer is formed on both sides of the fabric.

Afterwards, sand is sprinkled on them to prevent them from sticking together when rolled up and stored, forming a sand layer.

In this way, unlike the existing waterproof sheet according to the present invention, the waterproof sheet is first punched and then impregnated with the binder composition, so when the waterproof sheet is made, the ventilation holes are blocked by the binder composition.

In the past, if it was clogged in this way, ventilation was lost and air pockets could not be eliminated, so the ventilation holes were inevitably formed by punching at the end after making the waterproof sheet, so it was not possible to form many ventilation holes to prevent tearing. However, in the present invention, Since it is impregnated with a large number of ventilation holes formed in advance, the ventilation holes are blocked when winding, so there is no fear of tearing, and relatively more ventilation holes can be formed than before.

However, in the present invention, the binder composition is specially designed so that when the blistering rises from the air pocket after laying the waterproof sheet, the ventilation hole is opened and it can be naturally discharged.

For this purpose, the binder composition contains 15-20% by weight of hydrocarbon resin, 2.5-5.0% by weight of alkoxylated alcohol, 5-15% by weight of SBR (Styrene-Butadiene Rubber), and perfluorine (2 ,2-dimethyl-1,3-dioxole (Perfluoro(2,2-dimethyl-1,3-dioxole)) 2.5-4.5% by weight, Asphalt Emulsifier 5-10% by weight and the remaining thermoplastic elastomer (Thermoplastic) Elastomer).

At this time, alkoxylated alcohol is a nonionic surfactant that weakens the binder film deposited on the ventilation hole, making it easier to burst when bubbles are generated by blistering, thereby facilitating the discharge of bubbles.

In addition, Perfluoro(2,2-dimethyl-1,3-dioxole) is a substance corresponding to CAS number 37697-64-6 and is installed in the ventilation hole. It induces the attached resin liquid to be uniformly dispersed rather than agglomerated, reducing the thickness and weakening the surface tension so that it can easily burst due to blistering pressure.

In this case, the binder composition includes 2.5 parts by weight of phosphoric acid, 2.5 parts by weight of isohexadecane, 2.5 parts by weight of potassium citrate, and polyphosphate, based on 100 parts by weight of the binder composition. salts) can be added in an additional 2.5 parts by weight.

At this time, phosphoric acid is added to prevent cracking resistance by contributing to increasing the anti-erosion ability especially due to chlorine components.

Additionally, isohexadecane is added to increase the solubility and dispersibility of solids.

Additionally, Potassium Citrate contributes to increasing waterproofness and strength.

In addition, polyphosphate salts enhance durability by increasing the tear strength and tensile strength of the surface, and enhance corrosion resistance and water pressure resistance.

The test results for the bridge surface sample constructed in this way are shown in Table 1 below.

According to Table 1 above, it was confirmed that all quality standards required for bridge surface paving were satisfied.

On the other hand, when constructed according to the waterproofing method according to the present invention, the thermoplastic double composite waterproofing structure for bridge surfaces that facilitates blistering discharge has a layer structure as shown in FIG. 3.

According to Figure 3, the thermoplastic double composite waterproof structure for a bridge surface with smooth blistering discharge according to the present invention includes an adhesive (2) applied on a slab (1), which is a concrete floor; A coating material (3) applied on the adhesive (2) to form a coating layer; A waterproof sheet (4) installed on the coating material (3) to form a waterproof layer; It includes asphalt (5) packed on the waterproof sheet (4).

Having such a waterproof structure increases the strength and waterproofness of the concrete structure by suppressing fine cracks, damage caused by cracks, and durability degradation on the surface of the concrete structure, which is the floor slab layer, when paving the bridge surface, and above all, the coating layer. By resolving blistering caused by moisture contained in the slab when paving with a double composite waterproof asphalt consisting of a layer and a sheet layer, it is possible to resolve deterioration of the bridge pavement surface such as interfacial separation, occurrence of potholes, and deterioration of asphalt durability. .

Meanwhile, an adhesion improver may be applied between the waterproof sheet (4) and the asphalt (5).

The adhesion improver may include 65 parts by weight of water, 12 parts by weight of nonyl acrylate, 16 parts by weight of vinyltriethoxysilane, 4 parts by weight of ammonium persulfate, and 3 parts by weight of sodium bicarbonate.

Nonyl acrylate and vinyltriethoxysilane serve as adhesion and adhesion, ammonium persulfate acts as a catalyst, and sodium bicarbonate acts as a buffer.

The reason for limiting the constituent materials and components and limiting the mixing ratio as described above is that the present inventor analyzed the test results after repeated failures and found that the optimal effect was achieved with the above-mentioned constituents and numerical ratio. indicated.

In addition, a stain-resistant coating layer made of an anti-fouling coating composition may be applied to the waterproof sheet 4 to improve stain resistance.

The fouling-resistant coating layer contains dioctylsulfosuccinate and amidoquat in a molar ratio of 1:0.01 to 1:2, and the total content of dioctylsulfosuccinate and amidoquat is 1 to 12 weight based on the total aqueous solution. %am.

The molar ratio of dioctylsulfosuccinate and amidoquat is preferably 1:0.01 to 1:2. If the molar ratio is outside the above range, the applicability of the waterproof sheet 4 may decrease or moisture adsorption on the surface may occur after application. There is a problem that the coating film is removed due to the increase.

The dioctylsulfosuccinate and amidoquat are preferably used in an amount of 1 to 12% by weight in the total composition aqueous solution. If it is less than 1% by weight, there is a problem that the applicability of the waterproof sheet 4 is reduced, and if it exceeds 12% by weight, the applicability of the waterproof sheet 4 is reduced. Crystal precipitation is likely to occur due to an increase in coating film thickness.

Meanwhile, it is preferable to apply the stain-resistant coating composition to the waterproof sheet 4 by spraying. In addition, the final coating film thickness of the waterproof sheet 4 is preferably 900 to 2300 Å. If the thickness of the coating film is less than 900 Å, there is a problem of deterioration in the case of high temperature heat treatment, and if it exceeds 2300 Å, there is a disadvantage that crystal precipitation on the coating surface is likely to occur.

Additionally, this stain-resistant coating composition can be prepared by adding 0.1 mole of dioctylsulfosuccinate and 0.05 mole of amidoquat to 1000 ml of distilled water and then stirring.

The reason for limiting the ratio of the components and the thickness of the coating film to the above values is that the present inventor analyzed the test results after repeated failures and found that the ratio showed the optimal anti-contamination application effect.

In addition, a heat-insulating coating agent may be applied to the surface of the asphalt 5, thereby partially blocking solar heat from being transmitted to the asphalt 5.

This heat-insulating coating agent contains 19% by weight of xylene, 42% by weight of dimethylformamide, 8% by weight of chromium oxide, 12% by weight of graphite, 7% by weight of silicon nitride, 5% by weight of sodium hydroxide (NaOH), 3% by weight of titanium oxide, and fumed silica. It consists of 4% by weight.

Xylene plays a role in protecting the heat dissipation coating layer, dimethylformamide acts as a binder resin, chromium oxide acts as wear resistance, graphite has excellent thermal conductivity and electrical properties, and silicon nitride improves strength and prevents cracking. , sodium hydroxide acts as a dispersant, titanium oxide serves for weather resistance, and fumed silica acts as an anti-settling agent.

The thickness of the heat-insulating coating is preferably 8 to 1200㎛.

The reason for limiting the constituent materials and components and limiting the mixing ratio as described above is that the present inventor analyzed the test results after repeated failures and found that the optimal effect was achieved with the above-mentioned constituents and numerical ratio. indicated.

Claims (5)

The first step is to apply adhesive on the slab, which is a concrete floor; A second step of forming a coating layer by applying a coating material on the adhesive; A third step of forming a waterproof layer by laying a waterproof sheet on the coating layer; In the thermoplastic double composite waterproofing method for bridge surfaces, which includes a fourth step of paving asphalt on the waterproofing layer;
The coating material used in the second step is 15-20% by weight of hydrocarbon resin, 5-15% by weight of SBR (Styrene-Butadiene Rubber), 5-10% by weight of asphalt emulsifier, and the remaining thermoplastic elastomer ( Thermoplastic Elastomer);
When composing the coating material, 10 parts by weight of vinyl pyrrolidone, 10 parts by weight of 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol, based on 100 parts by weight of the coating material composition. , A thermoplastic double composite waterproofing method for bridge surfaces with smooth blistering discharge, characterized by adding 5 parts by weight of Boron Nitride powder. delete According to paragraph 1,
The waterproof sheet is made by impregnating the central substrate with a binder composition to have a layer structure of sand-binder-central substrate-binder-sand with a thickness of 1.5-2.5mm, and the central substrate is any one of polyester, polypropylene, and polyethylene. A thermoplastic double composite waterproofing method for bridge surfaces with smooth blistering discharge, characterized in that it is made of a fiber fabric. According to paragraph 3,
The binder composition includes 15-20% by weight of hydrocarbon resin, 2.5-5.0% by weight of alkoxylated alcohol, 5-15% by weight of SBR (Styrene-Butadiene Rubber), and perfluorine (2,2- 2.5-4.5% by weight of dimethyl-1,3-dioxole (Perfluoro(2,2-dimethyl-1,3-dioxole)), 5-10% by weight of asphalt emulsifier, and the remaining thermoplastic elastomer. A thermoplastic double composite waterproofing method for bridge surfaces with smooth blistering discharge, characterized by the composition. The first step is to apply adhesive on the slab, which is a concrete floor; A second step of forming a coating layer by applying a coating material on the adhesive; A third step of forming a waterproof layer by laying a waterproof sheet on the coating layer; It includes a fourth step of paving asphalt on the waterproofing layer; The coating material used in the second step is 15-20% by weight of hydrocarbon resin, 5-15% by weight of SBR (Styrene-Butadiene Rubber), 5-10% by weight of asphalt emulsifier, and the remaining thermoplastic elastomer ( Thermoplastic Elastomer); When composing the coating material, 10 parts by weight of vinyl pyrrolidone, 10 parts by weight of 1,3:2,4-bis(3,4-dimethylbenzylidene)sorbitol, based on 100 parts by weight of the coating material composition. , It relates to a thermoplastic double composite waterproofing structure for bridge surfaces with smooth blistering discharge using a thermoplastic double composite waterproofing method for smooth blistering discharge, which was created by adding 5 parts by weight of Boron Nitride powder,
Adhesive (2) applied on the slab (1), which is a concrete floor; A coating material (3) applied on the adhesive (2) to form a coating layer; A waterproof sheet (4) installed on the coating material (3) to form a waterproof layer; A thermoplastic double composite waterproof structure for a bridge surface with smooth blistering discharge, comprising asphalt (5) packed on the waterproof sheet (4).

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