KR101828018B1 - Adhesive composition, waterproof composition for coating bridge deck, and process of waterproofing bridge deck by using the same - Google Patents

Abstract

The present invention relates to an adhesive composition and a waterproof composition for coating a bridge deck to prevent degradation of bridge bottom plates and corrosion of reinforcing bars, and a waterproofing method of a bridge deck using the same. An adhesive composition and a waterproof composition for coating a bridge deck, and a waterproof structure for a bridge deck using the same have excellent waterproof performance and prevent penetration of various harmful materials, thereby preventing degradation of bridge bottom plates and corrosion of reinforcing bars.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproofing composition and a waterproofing composition,

The present invention relates to a cross-linked waterproofing adhesive composition and a waterproofing composition for preventing deterioration of a bridge deck and corrosion of reinforcing bars, and a cross-linked waterproofing method using the same.

The bridging waterproofing material installed at the interface between the bottom plate of the bridge and the packing layer is used to prevent deterioration of the bridge deck and corrosion of the reinforcing steel due to various harmful substances penetrated by the damage of the packing layer.

Since the bridge waterproofing material is used for the bottom plate in which the dynamic action such as cyclic load, vibration, impact and shearing by the driving vehicle, and the meteorological action such as temperature change are complicated, proper correspondence is required.

It can be classified into infiltration type, sheet type and coating type by dividing the antifouling material by the main material.

The bridges used in bridges in Korea are mostly made of infiltration type waterproofing materials because of their usability and economical efficiency. When an infiltration type waterproofing material is applied to the surface of concrete and impregnated with waterproofing material, an absorption prevention layer is formed, Is suppressed. However, recently, many high-quality long-span bridges have been constructed, so that the penetration-type waterproofing material can not sufficiently penetrate into the concrete having high strength. In particular, when the concrete is cracked, the waterproofing function is lost.

In order to solve the problem of the penetration type waterproofing material, a sheet type waterproofing material and a coating type waterproofing material are widely used. In the sheet type waterproofing material, a modified asphalt type and a synthetic high molecular weight type are mainly used. Plate.

However, when there are many pores in the concrete deck, air bubbles are generated and the adhesion of the primer adhered only at the interface of the deck of the bridge is very low, so that there is a problem that the deck is removed from the bottom deck of the bridge together with the seat. There is a problem in that workability is lowered and large bubbles are generated, and water and chlorine ions in the sheet joint are infiltrated.

On the other hand, coating type waterproofing materials such as synthetic rubber type, asphalt type, and synthetic resin type are applied to the concrete bottom plate by applying a liquid type waterproofing material to the concrete bottom plate to form a waterproof layer and there is no problem in workability even if the concrete bottom plate is rough. It is easy to construct even the parts with complicated shape that can be constructed.

However, when there are many voids in the concrete bottom plate as in the case of the sheet type waterproofing material, there is a problem that the adhesive force of the primer is very low and the pinhole, which is a small number of small bubbles, There is a problem that the fluidity of the coating waterproofing material is increased, permanent deformation occurs, and the coating waterproofing material is removed from the bridge deck.

Korean Patent Publication No. 10-2010-0004834 Korean Patent Publication No. 10-2015-0033475

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an adhesive composition excellent in tensile adhesion performance, excellent crack resistance against increase in low temperature and cyclic load, It is another object of the present invention to provide a waterproofing composition having excellent performance and a method of coating a waterproofing composition after applying an adhesive composition to a bridge deck to prevent penetration of various harmful substances from the outside into the bridge deck, And corrosion of the reinforcing bars can be prevented.

An aspect of the present invention relates to a method for producing asphalt comprising 61.85 to 62.43% by weight of emulsified asphalt, 4.92 to 5.38% by weight of polymethylsilsesquioxane, 11.32 to 11.96% by weight of triethylene glycol dimethacrylate, 12.28 to 12.86% by weight of naphthene, By weight, and 0.97 to 1.22% by weight of organopolysiloxane.

Another aspect of the present invention is a process for the preparation of a composition comprising 67.17 to 67.58% by weight of emulsified asphalt, 6.18 to 6.67% by weight of polyethylene methacrylate, 12.13 to 12.65% by weight of triethylene glycol dimethacrylate, 3.98 to 4.56% by weight of naphthene, 8.35 to 8.85% % Of an organopolysiloxane, and 1.18 to 1.35% by weight of an organopolysiloxane.

Another aspect of the present invention relates to (A) a step of forming an adhesive layer on an upper surface of a bridge, and (B) a step of forming a waterproof layer on the adhesive layer.

The cross-linked waterproofing adhesive composition, the waterproofing composition and the cross-linked waterproofing structure according to the present invention have an excellent waterproof performance and prevent penetration of various harmful substances, thereby preventing deterioration of the bridge deck and corrosion of reinforcing bars.

In addition, it has excellent tensile adhesion performance and resistance to cracking, so there is no premature breakage of the cross-linked waterproofing material, and the maintenance period of the cross-linked waterproofing can be lengthened.

1 is a block diagram showing a cross-linked waterproofing method according to an embodiment of the present invention.
2 is a schematic view showing a cross-linked waterproof structure according to an embodiment of the present invention.
3 is a schematic view showing a cross-linked waterproof structure according to another embodiment of the present invention.
4 is a schematic view illustrating a cross-linked waterproof structure according to another embodiment of the present invention.
FIG. 5 is a graph of the penetration depth measurement result.
FIG. 6 is a graph showing the result of measurement of the amount of pores.
Fig. 7 is a graph of tensile bond strength measurement results.
8 is a graph showing a result of measurement of permeability.
FIG. 9 is a graph of a total charge amount calculation result.
Fig. 10 shows the result of evaluation of on-flow resistance.

Hereinafter, various aspects and various embodiments of the present invention will be described in more detail.

An aspect of the present invention relates to a method for producing asphalt comprising 61.85 to 62.43% by weight of emulsified asphalt, 4.92 to 5.38% by weight of polymethylsilsesquioxane, 11.32 to 11.96% by weight of triethylene glycol dimethacrylate, 12.28 to 12.86% by weight of naphthene, By weight, and 0.97 to 1.22% by weight of organopolysiloxane.

The emulsified asphalt performs a binder function and improves the water resistance. If the content is less than 61.85% by weight, the binder may fail to function and the waterproofing performance of the adhesive may be deteriorated. If the content is more than 62.43% by weight, the tack-free drying time may be delayed and the subsequent process may be delayed.

The polymethylsilsesquioxane improves penetration of the adhesive and serves to fill the pores of the bridge floor concrete. If it is less than 4.92% by weight, penetration depth of the adhesive material may be small and void filling property of the concrete may be deteriorated. If it exceeds 5.38% by weight, the viscosity of the adhesive material may increase and the workability may be deteriorated.

The triethyleneglycol dimethacrylate serves to enhance the tensile bond strength. If it is less than 11.32 wt%, the tensile adhesive strength performance of the adhesive is deteriorated. If it exceeds 11.96 wt%, the composition of the adhesive is separated .

If the content of the naphthenes is less than 12.28% by weight, the viscosity of the adhesive material may be high and the workability may be deteriorated. If the content of the naphthenes is more than 12.86% by weight, the viscosity of the adhesive material is lowered, .

The stone flour serves as a filler or an extender, and has no limitation on the size of the particles, but it is preferably 80 μm or less. If it is less than 7.87% by weight, the microporous packing property of the adhesive agent may be deteriorated. If it exceeds 8.17% by weight, the flowability of the adhesive agent may be lowered and the workability may be lowered.

The organopolysiloxane serves to remove air bubbles. When the content is less than 0.97% by weight, the bubble removing performance of the adhesive may be deteriorated. When the content of the organopolysiloxane exceeds 1.22% by weight, the viscosity of the adhesive may be high, .

Another aspect of the present invention is a process for the preparation of a composition comprising 67.17 to 67.58% by weight of emulsified asphalt, 6.18 to 6.67% by weight of polyethylene methacrylate, 12.13 to 12.65% by weight of triethylene glycol dimethacrylate, 3.98 to 4.56% by weight of naphthene, 8.35 to 8.85% % Of an organopolysiloxane, and 1.18 to 1.35% by weight of an organopolysiloxane.

At this time, the emulsified asphalt performs a binder function and improves the water resistance. If the content is less than 67.17% by weight, the binder may fail to function and the waterproofing performance of the waterproofing material may deteriorate. If the content exceeds 67.58% by weight, the curing time may be delayed and the subsequent process may be delayed.

The polyethylene methacrylic acid serves to reduce the fluidity of the waterproofing material cured at a high temperature and improve the crack resistance of the waterproofing material. If it is less than 6.18% by weight, the fluidity reduction performance of the waterproofing material cured at a high temperature may be deteriorated and the crack resistance may be deteriorated due to the low temperature and cyclic loading. If it exceeds 6.67% by weight, the elasticity and bending resistance of the waterproofing material may be deteriorated.

The triethylene glycol dimethacrylate serves to enhance the tensile bonding strength. When less than 12.13% by weight, the tensile adhesion performance of the waterproofing material is deteriorated. When the waterproofing material is more than 12.65% by weight, the composition of the waterproofing material can be separated.

The naphthene serves to control the viscosity. If it is less than 3.98% by weight, the waterproofing material may have a high viscosity and the workability may be deteriorated. If it exceeds 4.56% by weight, the viscosity of the waterproofing material may be lowered and the workability in the slope section may be lowered.

It plays a role as a filler or extender, and does not impose any limit on the particle size, but it is preferably 80 탆 or less. If it is less than 8.35% by weight, the microporous packing of the waterproofing material may be deteriorated. If it exceeds 8.85% by weight, the fluidity of the waterproofing material may be lowered and the workability may be lowered.

The organopolysiloxane serves to remove air bubbles. If the amount is less than 1.18% by weight, the defoaming performance of the waterproofing material may be deteriorated. If the amount exceeds 1.35% by weight, the waterproofing material may have a high viscosity and the workability may be deteriorated.

Another aspect of the present invention relates to (A) a step of forming an adhesive layer on an upper surface of a bridge, and (B) a step of forming a waterproof layer on the adhesive layer.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a cross-linked waterproofing method according to an embodiment of the present invention; FIG.

The bottom plate surface treatment step (S101) is a step of removing laitance, dust, emulsion, and the like on the bridge deck, using shot blast or a mechanical instrument, and removing moisture present in the bridge deck to dry .

The adhesive layer forming step (S102) is to apply using a spray or roller or brush, the method comprising: applying an adhesive composition to the bottom plate upper surface of the surface treatment, when the application amount of the adhesive composition is less than 0.2kg / m ² Bridge Deck The tensile adhesion performance of the adhesive is insufficient, and when the application amount exceeds 0.3 kg / m ² , the touch-drying time of the adhesive is delayed, and the subsequent process is delayed. Therefore, the coating amount of the adhesive composition is preferably 0.2 to 0.3 kg / m ² , and the coating thickness of the adhesive is not particularly limited, but is preferably 0.2 to 0.3 mm. Also, the vehicle and personnel should not be allowed to pass through so as to be sufficiently dried after application of the adhesive composition.

The waterproof layer forming step (S103) is a step of applying the waterproofing composition on the upper surface of the adhesive layer, and is applied using a spray, a roller or a brush. If the waterproofing composition is applied in an amount less than 2.0 kg / m ² , insufficient cracking resistance of the low-temperature and repeated load increased, and when it is more than 3.0kg / m ² is delayed, the curing time of the water shield is carried out for the formation of the protective layer subsequent processing delayed. Therefore, the coating amount of the waterproofing composition is preferably 2.0 to 3.0 kg / m ² , and the coating thickness of the waterproofing material is not particularly limited, but is preferably 2.0 to 3.0 mm.

Another aspect of the present invention relates to a bridging waterproof structure comprising a bridging surface, an adhesive layer formed on the bridging surface, and a waterproofing layer formed on the adhesive layer.

That is, the bridge waterproof structure according to the present invention includes an adhesive layer 20 formed by applying the adhesive composition to a bridge bottom plate 10 and a waterproof layer 30 formed by applying the waterproofing composition on the surface of the adhesive layer do.

FIG. 2 is a cross-sectional view illustrating a cross-linked waterproof structure according to an embodiment of the present invention, which is applied by the above-described method. The surface of the bridge deck 10 is coated with an adhesive layer 20 And a waterproof layer 30 formed by coating a waterproofing composition on the adhesive layer 20.

When the waterproof layer 30 is formed, the asphalt concrete is installed on the upper surface of the waterproof layer 30 to form the packaging layer 50. In order to protect the waterproof layer 30 as shown in FIG. 3, The protective layer 40 may be formed on the protective layer 40, and then the asphalt concrete may be laid on the protective layer 40 to form the packaging layer 50.

When the adhesive layer 20 is formed, the protective layer 40 may be formed by adhering the sheet to the upper surface of the adhesive layer 20 as shown in FIG. 4, and then the asphalt concrete may be laid to form the packaging layer 50.

The sheet used for the protective layer 40 is preferably any one or a mixture of two or more selected from an aramid fiber sheet, a carbon fiber sheet, a glass fiber sheet, and an asphalt sheet.

At this time, the adhesive layer is composed of 61.85 to 62.43 wt% of emulsified asphalt, 4.92 to 5.38 wt% of polymethylsilsesquioxane, 11.32 to 11.96 wt% of triethylene glycol dimethacrylate, 12.28 to 12.86 wt% of naphthene, 7.87 to 8.17 wt% % Of an organopolysiloxane, and 0.97 to 1.22 wt% of an organopolysiloxane.

Also, the waterproof layer is composed of 67.17 to 67.58 wt% of emulsified asphalt, 6.18 to 6.67 wt% of polyethylene methacrylate, 12.13 to 12.65 wt% of triethylene glycol dimethacrylate, 3.98 to 4.56 wt% of naphthene, 8.35 to 8.85 wt% And 1.18 to 1.35% by weight of an organopolysiloxane.

According to a preferred embodiment, the adhesive layer is SiO ₂ based on 100 parts by weight of the adhesive layer Presence - further includes a third acrylic-inorganic composite resin to 5 parts by weight of urethane.

According to a further preferred embodiment, the waterproof layer further comprises 2 to 4 parts by weight of an Al ₂ O ₃ - nanosilicate-phenoxy organic complex resin based on 100 parts by weight of the waterproof layer.

The above-mentioned organic-inorganic hybrid resin of SiO ₂ -urethane-acryl can be prepared as follows, but it is apparent that the content and scope of the present invention are not limited by the following production methods.

The organic-inorganic hybrid resin can be prepared by chemically substituting the inorganic nano-particles for the terminal substituent of the organic resin. The organic resin was a urethane-acrylic resin (weight average molecular weight: 15,000, softening point: 80 ° C), and an acrylic monomer obtained by mixing 2-hydroxyethyl methacrylate and acrylamide in a weight ratio of 1: Can be used. The inorganic nanoparticles may be SiO ₂ (average particle diameter: 7 μm). Can be prepared for the presence of the acrylic-based composite resin were mixed so that 1, using phosphoric acid as catalyst SiO ₂ by reacting substituted-urethane: specifically organic resin: The weight ratio of the inorganic nano-particles 9.

The Al ₂ O ₃ -nosilicate-phenoxy organic complex resin can also be prepared as follows, and it is apparent that the content and scope of the present invention are not limited by the following production methods.

And is the same as the above manufacturing method except that it uses the: (10μm average particle size) (:: 7000 softening point 70 ℃ weight average molecular weight) and Al ₂ O ₃ polyurethane-phenoxy resin-acrylic resin and the SiO ₂ instead of the nano-silicate The Al ₂ O ₃ -nonosilicate-phenoxy-based complex resin can be produced by carrying out a substitution reaction.

According to a most preferred embodiment of the invention, (i) the adhesive layer comprises 61.85 to 62.43% by weight of emulsified asphalt, 4.92 to 5.38% by weight of polymethylsilsesquioxane, 11.32 to 11.96% by weight of triethylene glycol dimethacrylate, acrylic-12.28 to 12.86% by weight of stone dust 7.87 to 8.17% by weight of the organopolysiloxane of 0.97 to 1.22 including the adhesive layer presence consisting of% by weight, (ii) the adhesive layer is SiO ₂ based on 100 parts by weight of residence wherein the adhesive layer-urethane (Iii) the waterproof layer comprises 67.17 to 67.58% by weight of emulsified asphalt, 6.18 to 6.67% by weight of polyethylene methacrylate, 12.13 to 12.65% by weight of triethylene glycol dimethacrylate, (Iv) a waterproof layer consisting of 3.98 to 4.56% by weight of naphthene, 8.35 to 8.85% by weight of abrasive grains and 1.18 to 1.35% by weight of organopolysiloxane, (iv) Further comprises 2 to 4 parts by weight of an Al ₂ O ₃ - nanosilicate-phenoxy organic complex resin based on 100 parts by weight of the waterproof layer.

When all of the above conditions (i) to (iv) are satisfied, cracking, bulging, swelling of the coating film in the acid resistance (5%, H ₂ SO ₄ , 7 days, 20 ° C.) test according to the method described in KS M 2812-1, (I) to (iv) do not include any of the above-mentioned layers or specific components, or any of the above-mentioned content ranges are not satisfied, while no damage to the coating film such as wrinkles, , It was confirmed that the coating film was damaged under the above test conditions.

Hereinafter, the present invention will be described in more detail with reference to Examples and the like, but the scope and content of the present invention can not be construed to be limited or limited by the following Examples. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the present invention as set forth in the following claims. It is natural that it belongs to the claims.

In addition, the experimental results presented below only show representative experimental results of the embodiments and the comparative examples, and the respective effects of various embodiments of the present invention which are not explicitly described below will be specifically described in the corresponding part.

Example

Hereinafter, a description will be given of a method of cross-face waterproofing using the adhesive composition and a waterproofing composition, and a cross-face waterproofing structure.

Example 1: Cross-linked waterproofing using an adhesive composition and a waterproofing composition

The concrete base plate to be coated with the waterproofing composition and the antifouling adhesive composition according to the present invention was made of a crushed stone aggregate having a maximum coarse aggregate of 25 mm and a fine aggregate was used as a cleaning agent. The concrete floor slabs were made according to the method of making concrete samples in the KS F 2425 test room according to the formulation table shown in Table 1.

The adhesive composition according to the present invention comprises 62.14% by weight of emulsified asphalt, 4.97% by weight of polymethylsilsesquioxane, 11.46% by weight of triethylene glycol dimethacrylate, 12.37% by weight of naphthene, 7.92% by weight of an abrasive and 1.14% by weight of an organopolysiloxane, And then 0.3 kg / m ² was applied to the concrete bottom plate.

The waterproofing composition according to the present invention was prepared by stirring 67.42% by weight of asphalt emulsified, 6.27% by weight of polyethylene methacrylate, 12.42% by weight of triethylene glycol dimethacrylate, 8.54% by weight of naphthene and 8.53% by weight of an organopolysiloxane, And 2.0 kg / m ² was applied to the concrete bottom plate.

Comparative Examples 1 and 2: Cross-linked waterproofing using an adhesive composition and a waterproofing composition

In order to compare the performance of the antifouling adhesive composition and waterproofing composition according to the present invention and the performance of the waterproofing structure using the same, asphalt primer and film type waterproofing material of domestic R company (Comparative Example 1) and B Company (Comparative Example 2) Plate.

Test Example

Hereinafter, the performance of the adhesive composition for cross-linked waterproofing and the waterproofing composition and the cross-linked waterproofing structure using the same are evaluated.

Test Example 1: Penetration depth evaluation

In order to evaluate the penetration performance of the adhesive composition according to the present invention, a specimen (Test Name: Bon-A) coated with the adhesive composition according to the present invention was prepared on the upper surface of a 100 mm x 300 mm concrete cured in air for 28 days, Lt; / RTI > The depth of penetration was measured by spraying water on the cut surface after cutting the specimen. The depth of penetration was measured four times. In addition, a specimen (Bon-B) coated with a primer (Bon-R) and a primer (B) from a domestic company R were manufactured and dried in the same manner, Respectively.

As a result of the penetration depth measurement, the penetration depth of the adhesive composition according to the present invention was the largest as shown in FIG. 5, indicating that the adhesive composition according to the present invention was adhered not only at the interface of the concrete bottom plate but also inside the void of the concrete bottom plate I could.

Test Example 2: Evaluation of void filling

In order to evaluate the pore filling performance of the adhesive composition according to the present invention, a specimen (Bon-A) coated with the adhesive composition according to the present invention was prepared on a 100 × 100 × 100 mm upper surface of a concrete cured in air for 28 days, Lt; / RTI > Thereafter, the sample was sampled at a depth of 5 mm from the surface of the specimen, pulverized to 2.5 to 5 mm, immersed in acetone for 24 hours, dried, and the amount of pores of the specimen was measured using a mercury-pressurized porometer. In addition, a test specimen (Bon-R) coated with a primer of domestic R company and a specimen (Bon-B specimen) coated with a primer of a domestic company B were prepared and dried in the same manner, , And the amount of pores was measured in the same manner as in Concrete (Test Name: Con) not coated with the adhesive composition according to the present invention.

As a result of measuring the pore volume of the test piece, it was found that the large voids were most reduced in the test body coated with the adhesive composition according to the present invention as shown in FIG. 6, and the adhesive composition according to the present invention was excellent in filling the pores of the concrete .

Test Example 3: Tensile adhesion strength evaluation

In order to evaluate the tensile adhesion performance of the adhesive composition and the waterproofing composition according to the present invention, a test piece (Test Name: Bon-A) coated with the adhesive composition according to the present invention was applied to the upper surface of a 300 × 300 × 100 mm concrete surface cured in air for 28 days (Test Name: WP-A) coated with a waterproofing composition, and a test material (Test Name: BW-A) coated with an adhesive composition and coated with a waterproofing composition after touching and drying, And cured. Then, three places were cut about 5 mm deep from the concrete surface at appropriate intervals to measure the tensile bonding strength using a core bit of? 100 mm, and a stainless steel disk for tensile bonding? 100 mm in diameter was completely Respectively. After the epoxy resin was cured, the load was applied until the maximum load was reached at a load speed of about 0.1 N / mm ² / sec using a hydraulic tensile bond strength tester connected to a load recorder and a load cell. In addition, a specimen (BW-R) was prepared by applying a test specimen (Bon-R), a specimen (WP-R) coated with a primer of domestic R company, a WP-R coated with a waterproofing material, A specimen (BW-B) was prepared by applying a specimen (Bon-B) coated with a primer of domestic company B, a specimen (WP-B) coated with a waterproofing material and a primer, After drying and curing, tensile bond strength was measured by the same method.

The tensile bond strength was determined by the following formula 1 and the average value measured three times.

As a result of measuring the tensile bond strength, the tensile bond strength was the highest in the test body using the adhesive composition according to the present invention as shown in FIG. 7, and the tensile bond strength was also high in the test body coated with the waterproofing composition according to the present invention, It was found that the adhesive composition and the waterproofing composition according to the present invention and the waterproof structure using the same exhibited excellent tensile adhesion.

Test Example 4: Crack response evaluation

In order to evaluate the cracking performance of the adhesive composition and the waterproofing composition according to the present invention, the adhesive composition according to the present invention was applied on the top surface of a 230 x 90 x 6 mm flexible plate, BW-A) was prepared and dried and cured in air for 7 days. After the specimens were stored at -20 ± 2 ° C and 20 ± 2 ° C for more than 1 hour, the bottom of the plate was divided into 2 sections by A-shaped 4mm grooves and the specimens were pressed at 5mm / min , It was observed whether the adhesive composition and the waterproofing composition had residual shrinkage or fracture within 0.2 mm or less at a temperature of -20 ° C and 0.4 mm or less at a temperature of 20 ° C. (BW-B), which was coated with a primer of domestic R company and coated with a waterproofing material after touching and drying, and a primer of domestic company B, After curing by the same method, it was observed whether the fracture or fracture occurred by the same method.

As a result, the adhesive composition and the waterproofing composition according to the present invention showed no cracking and breaking at room temperature and low temperature, respectively. As shown in Table 2, the adhesive composition and the waterproofing composition according to the present invention and the waterproofing composition It was found that cracks were generated in the bridge deck and the cracks could sufficiently cope with the expansion and contraction behavior.

Temperature BW-A BW-R BW-B -20 ° C clear Occurs Fracture 20 ℃ clear clear clear

Test Example 5: Evaluation of permeability

In order to evaluate the water permeation performance of the adhesive composition and the waterproofing composition according to the present invention, the adhesive composition according to the present invention was coated on the upper surface of a 100 mm x 50 mm concrete cured in air for 28 days, (Test Name: BW-A) was prepared and cured in air for 7 days. All surfaces except the surface coated with the adhesive composition and the waterproofing composition were coated with an epoxy resin and cured. The water permeability was measured by applying a water pressure of 0.1 N / mm ² for 1 hour using a water permeability testing apparatus. The highest and lowest values were discarded and the average of the remaining three measurements was taken as the permeability. (BW-B), which was coated with a primer of domestic R company and coated with a waterproofing material after touching and drying, and a primer of domestic company B, And the permeability was measured by the same method. The permeability of the concrete without the adhesive composition and the waterproofing composition was measured by the same method and the permeability ratio was calculated by the formula 2.

As shown in FIG. 8, since the adhesive composition and the waterproofing composition according to the present invention were not water permeable, the water permeability ratio of the adhesive composition and the waterproofing composition according to the present invention and the waterproof performance I was able to see that it was excellent.

Test Example 6: Evaluation of impact resistance

In order to evaluate the tearing resistance performance of the aggregate when the asphalt concrete was installed on the top surface of the waterproofing composition according to the present invention, the waterproofing composition according to the present invention was applied to the upper surface of a 300 × 300 × 100 mm concrete cured in the air for 28 days The test specimen (test name: WP-A) was prepared and cured in the air for 3 hours. Thereafter, the specimens were placed on an impact tester to drop the specimens of φ20mm, 90 °, and 1kg in weight at a height of 200mm for a total of 20 impacts. 0), surface trace (1), minor depression (2), severe depression (3), partial penetration (4), hole and complete penetration (5).

Also, a specimen (WP-B) coated with a waterproof material of domestic R company (test name: WP-R) and a waterproof material of a domestic company B were prepared and cured by the same method and evaluated by the same method.

As a result of investigation of the degree of damage, the waterproofing composition according to the present invention was irradiated to the extent that most of the waterproofing composition according to the present invention showed traces on the surface. Thus, it was found that the waterproofing composition according to the present invention had excellent impact resistance.

Impact number WP-A WP-R WP-B One One 2 2 2 One 2 2 3 0 One 2 4 One 3 2 5 2 2 3 6 One 2 3 7 One 3 2 8 One 2 One 9 One 2 3 10 One 2 2 11 One 3 3 12 One 2 2 13 One 3 2 14 One 3 2 15 One 2 2 16 One 2 One 17 One 2 One 18 One 2 3 19 One 2 2 20 One 2 2 Average One 2 2

Test Example 7: Evaluation of chlorine ion penetration resistance

In order to evaluate the chloride ion penetration resistance performance of the adhesive composition and the waterproofing composition according to the present invention, the adhesive composition according to the present invention was coated on the upper and lower surfaces of a 100 mm x 50 mm concrete cured in air for 28 days, (Test Name: BW-A) was prepared and cured in air for 7 days. All the surfaces except the surface coated with the adhesive composition and the waterproofing composition were coated with epoxy resin and cured to form a diffusion cell. In this circuit, a power source of 1.0 Ω was used to supply a DC of 60V to ± 0.1V Respectively. The electrolyte solution in the diffusion cell was filled with 3% sodium chloride solution on the (-) electrode and saturated calcium hydroxide solution on the (+) electrode. The voltage across the resistance was measured every 30 minutes during the test and converted to the current value by Equation 3. The total charge through the circuit was calculated by using Equation 4 and the chloride ion penetration resistance of the concrete by KS F 2711 electrical conductivity The chloride ion penetration resistance was evaluated by Table 4 according to the test method. (BW-B), which was coated with a primer of domestic R company and coated with a waterproofing material after touching and drying, and a primer of domestic company B were applied, And the voltage was measured by the same method. Also, the total charge amount was calculated by measuring the voltage by using the same method as in the concrete (Test name: Con) in which the adhesive composition and the waterproofing composition were not applied.

In the above equations, I is the current, V is the voltage, R is the resistance, Q is the total charge (Coulombs) passing through the circuit, and In is the current when n minutes have elapsed since the start of the test.

Total charge (Coulombs) Chlorine ion permeability > 4000 height 2000 to 4000 usually 1000 to 2000 lowness 100 to 1000 Very low <100 Negligible

As a result of measuring the electric charge by measuring the voltage, the chloride ion permeability of the adhesive composition and the waterproofing composition according to the present invention was negligible as shown in FIG. 9, and the total charge amount was the smallest, showing that the adhesive composition and the waterproofing composition And the waterproof structure using the same showed excellent performance to prevent deterioration of the bridge deck due to chlorine ions penetrating through the damaged pavement layer and corrosion of reinforcing bars.

Test Example 8: Evaluation of resistance to high temperature fluidity

In order to evaluate the permanent deformation resistance performance of the asphalt concrete due to the increase in the fluidity of the waterproofing material due to the high temperature when the asphalt concrete was installed on the top surface of the waterproofing composition according to the present invention, the waterproofing composition (Test Name: WP-A) And the time until penetration of 50 mm into the waterproofing composition was measured by the addition of 995 g of the additive. The waterproofing composition according to the present invention (product name: WP-A) was cured for 3 hours, , The mixture was stored in a drying furnace, and then placed in a fluid flow tester. The time was measured in the same manner as described above, and the fluidity ratio was determined by the equation (5). Also, the waterproofing material (test name: BW-R) of the domestic company R and the waterproofing material (test name: BW-B) of the domestic company B were cured by the same method and then the time was measured by the same method.

As a result of measuring the time, the fluidity ratio of the waterproofing composition according to the present invention was very small as shown in FIG. 10, and thus it was found that the waterproofing composition according to the present invention has excellent resistance to deformation and dropout of asphalt concrete after curing .

Claims (4)

Wherein the emulsion is composed of 61.85 to 62.43% by weight of emulsified asphalt, 4.92 to 5.38% by weight of polymethylsilsesquioxane, 11.32 to 11.96% by weight of triethylene glycol dimethacrylate, 12.28 to 12.86% by weight of naphthene, 7.87 to 8.17% 0.97 to 1.22 wt% based on the total weight of the cross-linked waterproofing adhesive composition. By weight of naphthene, 8.35 to 8.85% by weight of stearic acid, 1.18% by weight of naphthenic acid, 2.18% by weight of naphthenic acid, To 1.35% by weight based on the total weight of the waterproofing composition. (A) a step of forming an adhesive layer on an upper surface of a bridge, and (B) a step of forming a waterproof layer on the adhesive layer,
Wherein the adhesive layer comprises 61.85 to 62.43 wt% of emulsified asphalt, 4.92 to 5.38 wt% of polymethylsilsesquioxane, 11.32 to 11.96 wt% of triethylene glycol dimethacrylate, 12.28 to 12.86 wt% of naphthene, 7.87 to 8.17 wt% And 0.97 to 1.22% by weight of an organopolysiloxane,
Wherein the waterproof layer comprises 67.17 to 67.58% by weight of emulsified asphalt, 6.18 to 6.67% by weight of polyethylene methacrylate, 12.13 to 12.65% by weight of triethylene glycol dimethacrylate, 3.98 to 4.56% by weight of naphthene, 8.35 to 8.85% And 1.18 to 1.35% by weight of an organopolysiloxane. The method of claim 3 wherein said adhesive layer is based on 100 parts by weight of the adhesive layer Presence SiO ₂ - 3 further comprising an organic-inorganic composite material of the acrylic resin to 5 parts by weight, urethane-
Wherein the waterproof layer further comprises 2 to 4 parts by weight of an Al ₂ O ₃ - nanosilicate-phenoxy organic complex resin based on 100 parts by weight of the waterproof layer.

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