KR102641293B1 - Thermoplastic double composite waterproofing method for bridge surfaces with rainwater penetration prevention structure on the edge of bridges and rainwater penetration prevention structure on the edge - Google Patents

Abstract

The present invention relates to a thermoplastic double composite waterproofing method for a bridge surface having a rainwater infiltration prevention structure at the edge of a bridge and a rainwater infiltration prevention structure at the edge. More specifically, it relates to a rainwater infiltration prevention structure at the edge of a bridge. By suppressing existing micro-cracks, damage caused by cracks, and durability decline, the strength and waterproofness of the concrete structure are increased, and deterioration phenomena of the bridge surface such as interface separation, pothole generation, and decline in asphalt durability are resolved, and furthermore, the longitudinal and transverse sections of the bridge are resolved. A thermoplastic double composite waterproofing method for bridge surfaces with a rainwater infiltration prevention structure at the edge of a bridge improved to increase the durability of the asphalt pavement surface by preventing rainwater infiltration by blocking the lifting and opening of the edge, and a rainwater infiltration prevention structure at the edge. It's about.

Description

Thermoplastic double composite waterproofing method for bridge surfaces with rainwater penetration prevention structure on the edge of bridges and rainwater penetration prevention structure on the edge}

The present invention relates to a thermoplastic double composite waterproofing method for a bridge surface having a rainwater infiltration prevention structure at the edge of a bridge and a rainwater infiltration prevention structure at the edge. More specifically, it relates to a rainwater infiltration prevention structure at the edge of a bridge. By suppressing existing micro-cracks, damage caused by cracks, and durability decline, the strength and waterproofness of the concrete structure are increased, and deterioration phenomena of the bridge surface such as interface separation, pothole generation, and decline in asphalt durability are resolved, and furthermore, the longitudinal and transverse sections of the bridge are resolved. A thermoplastic double composite waterproofing method for bridge surfaces with a rainwater infiltration prevention structure at the edge of a bridge improved to increase the durability of the asphalt pavement surface by preventing rainwater infiltration by blocking the lifting and opening of the edge, and a rainwater infiltration prevention structure at the edge. It's about.

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 water vapor due to the heat of about 140-160℃ generated during paving, forming blistering (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.

In addition, in the case of bridges, the longitudinal and transverse axes, i.e., the edges of the bridge, are vulnerable areas where lifting, spreading, and cracking easily occur as time passes after asphalt is paved, repeating expansion in the summer and contraction in the winter. .

If the edge of the asphalt pavement is lifted, spread, or cracked, rainwater or permeable water can easily infiltrate, which in turn causes damage to the edge of the asphalt pavement, shortening its lifespan.

Therefore, it is time to reinforce this.

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 water resistance of the concrete structure, while resolving the deterioration of the bridge surface surface such as interface separation, pothole generation, and deterioration of asphalt durability, and further prevents rainwater infiltration by blocking the lifting and opening of the longitudinal and transverse edges of the bridge. The main purpose is to provide a thermoplastic double composite waterproofing method for bridge surfaces with an improved rainwater infiltration prevention structure at the edge of a bridge to increase the durability of the pavement, and a rainwater infiltration prevention structure at the edge.

The present invention is a means for achieving the above object, and includes a first step of forming an adhesive layer by 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 layer; A third step of forming a waterproof layer by laying a waterproof sheet on the coating layer; After the third step, a fourth step of forming an 'L' shaped first coating layer with a thickness of 2 mm, a height of 6 cm, and a length of 15 cm on the longitudinal and width direction edge portions of the waterproofing layer; A fifth step of installing a 'L' shaped geogrid with a height of 5cm and a length of 10cm on the first coating layer; A sixth step of forming a 'L' shaped second coating layer with a height of 5 cm and a length of 15 cm on the geogrid; In the thermoplastic double composite waterproofing method for bridge surfaces, including a seventh step of paving asphalt on the waterproofing layer and the second coating layer after the sixth step; The coating material constituting the first and second coating layers is the same as the coating material forming the coating layer formed in the second step; 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 ( Provides a thermoplastic double composite waterproofing method for bridge surfaces with a rainwater infiltration prevention structure at the edge of a bridge, which is composed of a thermoplastic elastomer, and a rainwater infiltration prevention structure at the edge.

Additionally, it is preferable to use a flexible geogrid using polyurethane resin as the base resin.

In addition, the geogrid contains 4.5 parts by weight of 2-Phenylimidazole, 6.5 parts by weight of Molecular Sieves, and 5.5 parts by weight of Texanol Ester Alcohol, based on 100 parts by weight of polyurethane resin. It can be molded by adding 4.5 parts by weight of polydimethylsiloxane.

In addition, 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, per 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 present invention provides an adhesive layer formed by applying an adhesive on a slab, which is a concrete floor; A coating layer formed by applying a coating material on the adhesive layer; A waterproof layer formed by laying a waterproof sheet on the coating layer; A first coating layer formed by applying a 'L' shape with a thickness of 2 mm, a height of 6 cm, and a length of 15 cm on the longitudinal and width direction edge portions of the waterproofing layer; A geogrid installed in an 'L' shape with a height of 5 cm and a length of 10 cm on the first coating layer; A second coating layer formed by applying a 'L' shape with a height of 5 cm and a length of 15 cm on the geogrid; Also provided is a thermoplastic double composite edge portion rainwater infiltration prevention structure for a bridge surface having a rainwater infiltration prevention structure at the edge portion of a bridge including asphalt paved on the waterproof layer and the second coating layer.

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 degradation existing on the surface of the concrete structure, which is the floor slab layer, when paving the bridge surface, while interfacial separation, pothole generation, and asphalt are prevented. An improved effect can be obtained to increase the durability of the asphalt pavement surface by resolving the deterioration phenomenon of the bridge surface pavement, such as a decrease in durability, and further preventing rainwater infiltration by blocking the lifting and opening of the longitudinal and transverse edges of the bridge.

1 is an exemplary flow chart showing a waterproofing method according to the present invention.
Figure 2 is an exemplary partial cross-sectional view showing the bridge surface pavement structure of a bridge illustrating 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.

In addition, each edge portion in the longitudinal and width directions of the bridge is reinforced with a coating material and a geogrid, thereby suppressing the lifting phenomenon caused by expansion and contraction of the asphalt pavement.

More specifically, as shown in the examples of Figures 1 and 2, the present invention includes a first step of forming an adhesive layer 20 by applying an adhesive on a slab 10, which is a concrete floor; A second step of forming a coating layer 30 by applying a coating material on the adhesive layer 20; A third step of forming a waterproof layer 40 by laying a waterproof sheet on the coating layer 30; After the third step, a fourth step of forming an 'L' shaped first coating layer 52 with a thickness of 2 mm, a height of 6 cm, and a length of 15 cm on the longitudinal and width direction edge portions of the waterproofing layer 40; A fifth step of installing an 'L' shaped geogrid 54 with a height of 5 cm and a length of 10 cm on the first coating layer 52; A sixth step of forming a 'L' shaped second coating layer 56 with a height of 5 cm and a length of 15 cm on the geogrid 54; It includes a seventh step of paving asphalt 60 on the waterproof layer 40 and the second coating layer 56 after the sixth step.

At this time, the coating material constituting the first and second coating layers 52 and 56 may be the same as the coating material forming the coating layer 30 formed in the second step.

In addition, the geogrid 54 is a grid-shaped material with small holes between ribs manufactured in the warp and weft directions, and absorbs and cushions through force distribution in the direction of receiving the load to suppress lifting, cracking, and spreading. It is a building material used for

This geogrid 54 is preferably made of a soft geogrid, and polyurethane resin is used as a base resin for occlusion with the coating material, and 2-phenylimidazole (2) is added to 100 parts by weight of the polyurethane resin. It can be molded by adding 4.5 parts by weight of -Phenylimidazole, 6.5 parts by weight of Molecular Sieves, 5.5 parts by weight of Texanol Ester Alcohol, and 4.5 parts by weight of Polydimethylsiloxane.

In this case, 2-Phenylimidazole is CAS No. It is a material equivalent to 670-96-2, which contributes to suppressing the lifting and cracking of the edges by reducing drying shrinkage.

In addition, Molecular Sieves utilize strong hygroscopicity with an adsorption capacity close to saturated adsorption capacity under extremely low water vapor partial pressure and the characteristics of a three-dimensional network pore crystal structure to strengthen shock absorbing properties to prevent expansion and contraction. Strengthens buffering properties.

Additionally, Texanol has CAS No. This substance corresponds to 25265-77-4, and its chemical name is 2,2,4-Trimethyl-1,3-pentanediol monoisobutyrate. This Texanol increases insulation, moisture resistance, waterproofing, and water pressure resistance properties.

In addition, polydimethylsiloxane has CAS No. It is a material corresponding to 68083-19-2, which increases lubricity, increases the elongation of the geogrid, and strengthens high tear resistance.

Meanwhile, 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. In other words, 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.

Then, this fiber fabric is impregnated with a binder composition to form a binder layer on both sides.

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

At this time, 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, 2.5-4.5% 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 ) is composed of

At this time, alkoxylated alcohol is a nonionic surfactant.

In addition, Perfluoro(2,2-dimethyl-1,3-dioxole) is a substance corresponding to CAS number 37697-64-6, and is attached to the resin. It induces the liquid to disperse uniformly rather than coagulate, thereby reducing the thickness and increasing even dispersion and adhesion.

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.

Meanwhile, the waterproof structure constructed by the waterproofing method according to the present invention is as follows.

That is, the edge water penetration prevention structure created by the thermoplastic double composite waterproofing method for bridge surfaces according to the present invention includes an adhesive layer (20) formed by applying an adhesive on a slab (10), which is a concrete floor; A coating layer 30 formed by applying a coating material on the adhesive layer 20; A waterproof layer (40) formed by laying a waterproof sheet on the coating layer (30); A first coating layer 52 formed by applying a 'L' shape of 2 mm in thickness, 6 cm in height, and 15 cm in length to the longitudinal and width direction edge portions of the waterproofing layer 40; A geogrid 54 installed in an 'L' shape with a height of 5 cm and a length of 10 cm on the first coating layer 52; A second coating layer 56 formed by applying a 'L' shape with a height of 5 cm and a length of 15 cm on the geogrid 54; It includes asphalt (60) paved on the waterproof layer (40) and the second coating layer (56).

Accordingly, when paving the bridge surface, it suppresses fine cracks, damage caused by cracks, and durability degradation on the surface of the concrete structure, which is the floor slab layer, and increases the strength and waterproofness of the concrete structure. Above all, it consists of a coating layer and a sheet layer. By resolving blistering caused by moisture contained in the slab during double-layer composite waterproof asphalt paving, deterioration phenomena of the bridge surface such as interface separation, creation of potholes, and deterioration of asphalt durability are eliminated, and furthermore, it is used to eliminate blistering caused by moisture contained in the slab. It is possible to increase the durability of the asphalt pavement surface by blocking heaving and opening and preventing rainwater infiltration.

Meanwhile, an adhesion enhancer may be applied between the first coating layer 52 and the geogrid 54.

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 fouling-resistant coating layer made of an anti-fouling coating composition may be applied to the geogrid 54 to improve fouling 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 geogrid 54 decreases or moisture adsorption on the surface increases after application. Therefore, there is a problem in that the coating film is removed.

The dioctylsulfosuccinate and amidoquat are preferably used in an amount of 1 to 12% by weight in the total composition aqueous solution. If the amount is less than 1% by weight, there is a problem that the applicability of the geogrid 54 is reduced, and if it exceeds 12% by weight, the application is difficult. Crystal precipitation is likely to occur due to an increase in film thickness.

Meanwhile, it is preferable to apply the stain-resistant coating composition to the geogrid 54 by spraying. In addition, the final coating film thickness of the geogrid 54 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.

Additionally, a heat-insulating coating agent may be applied to the surface of the asphalt 60, thereby partially blocking solar heat from being transmitted to the asphalt 60.

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)

A first step of forming an adhesive layer 20 by applying adhesive on a slab 10, which is a concrete floor; A second step of forming a coating layer 30 by applying a coating material on the adhesive layer 20; A third step of forming a waterproof layer 40 by laying a waterproof sheet on the coating layer 30; After the third step, a fourth step of forming an 'L' shaped first coating layer 52 with a thickness of 2 mm, a height of 6 cm, and a length of 15 cm on the longitudinal and width direction edge portions of the waterproofing layer 40; A fifth step of installing an 'L' shaped geogrid 54 with a height of 5 cm and a length of 10 cm on the first coating layer 52; A sixth step of forming a 'L' shaped second coating layer 56 with a height of 5 cm and a length of 15 cm on the geogrid 54; In the thermoplastic double composite waterproofing method for bridge surfaces, including a seventh step of paving asphalt (60) on the waterproofing layer (40) and the second coating layer (56) after the sixth step;
The coating material constituting the first and second coating layers 52 and 56 is the same as the coating material forming the coating layer 30 formed in the second step;
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);
The geogrid (54) is a thermoplastic double composite waterproofing method for a bridge surface with a structure to prevent rainwater infiltration at the edge of a bridge, characterized in that a flexible geogrid with polyurethane resin as the base resin is used. delete According to paragraph 1,
The geogrid 54 contains 4.5 parts by weight of 2-Phenylimidazole, 6.5 parts by weight of Molecular Sieves, and 5.5 parts by weight of Texanol Ester Alcohol, based on 100 parts by weight of polyurethane resin. A thermoplastic double composite waterproofing method for a bridge surface with a rainwater penetration prevention structure at the edge of a bridge, characterized in that it is molded by adding 4.5 parts by weight of polydimethylsiloxane. ◈Claim 4 was abandoned upon payment of the setup registration fee.◈ A first step of forming an adhesive layer 20 by applying adhesive on a slab 10, which is a concrete floor; A second step of forming a coating layer 30 by applying a coating material on the adhesive layer 20; A third step of forming a waterproof layer 40 by laying a waterproof sheet on the coating layer 30; After the third step, a fourth step of forming an 'L' shaped first coating layer 52 with a thickness of 2 mm, a height of 6 cm, and a length of 15 cm on the longitudinal and width direction edge portions of the waterproofing layer 40; A fifth step of installing an 'L' shaped geogrid 54 with a height of 5 cm and a length of 10 cm on the first coating layer 52; A sixth step of forming a 'L' shaped second coating layer 56 with a height of 5 cm and a length of 15 cm on the geogrid 54; In the thermoplastic double composite waterproofing method for bridge surfaces, including a seventh step of paving asphalt (60) on the waterproofing layer (40) and the second coating layer (56) after the sixth step;
The coating material constituting the first and second coating layers 52 and 56 is the same as the coating material forming the coating layer 30 formed in the second step;
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 a bridge surface with a rainwater penetration prevention structure at the edge of a bridge, characterized by adding 5 parts by weight of boron nitride powder. ◈Claim 5 was abandoned upon payment of the setup registration fee.◈ A first step of forming an adhesive layer 20 by applying adhesive on a slab 10, which is a concrete floor; A second step of forming a coating layer 30 by applying a coating material on the adhesive layer 20; A third step of forming a waterproof layer 40 by laying a waterproof sheet on the coating layer 30; After the third step, a fourth step of forming an 'L' shaped first coating layer 52 with a thickness of 2 mm, a height of 6 cm, and a length of 15 cm on the longitudinal and width direction edge portions of the waterproofing layer 40; A fifth step of installing an 'L' shaped geogrid 54 with a height of 5 cm and a length of 10 cm on the first coating layer 52; A sixth step of forming a 'L' shaped second coating layer 56 with a height of 5 cm and a length of 15 cm on the geogrid 54; After the sixth step, a seventh step of paving asphalt 60 on the waterproof layer 40 and the second coating layer 56 is included; The coating material constituting the first and second coating layers 52 and 56 is the same as the coating material forming the coating layer 30 formed in the second step; 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); The geogrid 54 is a rainwater infiltration prevention structure at the edge of a bridge implemented by a thermoplastic double composite waterproofing method for bridge surfaces using a flexible geogrid with polyurethane resin as the base resin,
An adhesive layer (20) formed by applying adhesive on a slab (10), which is a concrete floor; A coating layer 30 formed by applying a coating material on the adhesive layer 20; A waterproof layer (40) formed by laying a waterproof sheet on the coating layer (30); A first coating layer 52 formed by applying a 'L' shape of 2 mm in thickness, 6 cm in height, and 15 cm in length to the longitudinal and width direction edge portions of the waterproofing layer 40; A geogrid 54 installed in an 'L' shape with a height of 5 cm and a length of 10 cm on the first coating layer 52; A second coating layer 56 formed by applying a 'L' shape with a height of 5 cm and a length of 15 cm on the geogrid 54; A thermoplastic double composite edge water infiltration prevention structure for a bridge surface having a rain water infiltration prevention structure at the edge of a bridge including asphalt (60) paved on the waterproof layer (40) and the second coating layer (56).

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