KR101345436B1 - Gel-type membrane waterproofing composite and preparing method thereof and waterproofing material having gel-type membrane waterproofing composite and construction method thereof - Google Patents

Abstract

The present invention includes asphalt compounds containing asphalt, process, oil and petroleum solvents and an oil separation prevention agent. The oil separation prevention agent is organic clay in which bentonite or hectorite is added to quaternary ammonium compounds or contains salt compounds including acidic polyester and unsaturated polyamine amide. Therefore, The present invention can provide a dual waterproofing material which is harmless to environments and has improved waterproofness due to improved durability. [Reference numerals] (AA) START;(BB) END;(S21) Coating step;(S22) First bonding step;(S23) Second bonding step;(S24) Waterproof film deposition step

Description

GEL-TYPE MEMBRANE WATERPROOFING COMPOSITE AND PREPARING METHOD THEREOF AND WATERPROOFING MATERIAL HAVING GEL-TYPE MEMBRANE WATERPROOFING COMPOSITE AND THESTRUCTION METHRAN

The present invention relates to a double waterproofing material containing a gel-like waterproofing composition and a construction method thereof, and more particularly, to control the asphalt, process oil and petroleum solvent at an optimum ratio to reduce the amount of petroleum solvent to gel the waterproof composition. It maintains a long time to improve the adhesive force, and includes an oil-separating agent to maintain a semi-permanent gel phase and to prevent the oxidation of asphalt, to a waterproof coating composition excellent in durability and its manufacturing method. The present invention also relates to a double waterproofing material comprising the gel-like coating waterproofing composition and a construction method thereof.

In general, the waterproofing of underground concrete structures such as rooftops, underground basement floors and underground exterior walls, upper slabs of underground parking, and underground subways, underground roads, power ports, and communication areas is essential for the durability and safety of reinforced concrete structures.

Commonly applied waterproofing materials and waterproofing methods are mainly composed of three-layer and eight-layer waterproofing method of asphalt, which combines asphalt felt and asphalt roofing by heating and melting solid asphalt at temperatures of 200 ° C or higher at construction sites until the 1970s. Since the 1980s, the asphalt sheet waterproofing method, which is manufactured by laying the asphalt waterproof sheet in the shape of a roll and spreading it on the waterproof base surface, has been applied for reasons of ease of construction and economy.

However, such waterproof materials have to go through a complicated work process such as heating and melting solid asphalt at high temperatures in construction sites, or the watertightness of the joints between the waterproof sheets is inferior, and there are problems of frequent waterproof defects caused by the lifting and peeling of the sheet waterproof layer. .

Accordingly, in order to solve such a problem, the coating and sheet double waterproofing material of the concrete structure proposed in Patent Registration No. 0278173 and the stretch rubber asphalt felt for reinforcing the coating waterproof layer proposed in Patent Registration No. 0533231, and the coating and felt laminated waterproofing material using the same Invention has been proposed. However, the proposed invention is harmful to the environment due to volatile organic compounds due to the high content of petroleum resin in the coating waterproofing material, and in particular, air pockets are generated in the lower part of the waterproof sheet during volatilization of the petroleum solvent contained in the coating waterproofing material by heat. There is a problem in that the waterproof effect is falling.

Therefore, the waterproofing composition of the coating film semi-permanently maintains the gel state to cope with the occurrence of cracks in the concrete structure, the research on the waterproof material to achieve a complete adhesion with the concrete base surface is required.

Accordingly, an object of the present invention is to solve such a conventional problem, while maintaining the gel state semi-permanently while reducing the content of highly volatile petroleum solvent through the optimum ratio between asphalt, process oil and petroleum solvent. The present invention provides a gel coating film waterproof composition having high waterproof stability and reliability.

The present invention also provides a gel-like waterproof composition having excellent durability by preventing the oxidation of asphalt by increasing the miscibility between asphalt and a solvent by including an oil separation inhibitor in the gel-like coating waterproof composition.

The present invention also provides a method for preparing a gel-coated waterproof composition having excellent durability by adding an oil separation inhibitor in a colloidal state to increase dispersion.

In addition, by impregnating the waterproof sheet containing the gel-like coating waterproof composition and the non-woven fabric optimized therein to effectively increase the adhesion between the waterproof composition and the waterproof sheet to provide a double waterproof material excellent in waterproof effect.

In addition, it has excellent adhesion of waterproofing composition and makes perfect adhesion with the concrete base surface, so it is possible to omit the primer application step, which is convenient during construction, and it is possible to adhere the waterproof sheets continuously and reinforce overlapping parts between the waterproof sheets. To provide a construction method of the double waterproofing material to maximize.

In order to solve the above problems, the gel-like coating composition of the present invention comprises an asphalt compound including asphalt, process oil and petroleum solvent, the volume ratio of the process oil and the petroleum solvent is 10: 4 to 10: 8. It is characterized by. Here, the asphalt compound is asphalt is 60 to 80% by weight, the process oil is 10 to 30% by weight, the petroleum solvent is preferably made of 5 to 15% by weight, the specific gravity of the process oil of the petroleum solvent It is characterized by being 1.01 to 1.35 times as specific gravity.

The process oil may include at least one of paraffinic oil, naphthenic oil or aromatic oil, and the petroleum solvent may include at least one of an aromatic hydrocarbon solvent or a mineral spirit.

The gel coating film waterproof composition further comprises a synthetic rubber compound, the synthetic rubber compound is characterized in that 1 to 15 parts by weight based on 100 parts by weight of the asphalt compound, the synthetic rubber compound is polyisobutylene resin 20 to 40 It is preferable that it consists of 60 weight% and 80 weight% of aromatic hydrocarbon solvents.

Another gel-like waterproofing composition of the present invention includes asphalt, process oil, petroleum solvent and oil separation agent, wherein the oil separation agent is an organic clay containing bentonite or hectorite in the quaternary ammonium compound, or an acidic polyester and It is characterized in that the salt compound containing an unsaturated polyamine amide.

The volume ratio of the process oil and the petroleum solvent is preferably 10: 4 to 10: 8, wherein the process oil includes at least one of paraffinic oil, naphthenic oil, or aromatic oil, and the petroleum solvent is an aromatic hydrocarbon. Characterized in that it comprises at least one of a solvent or a mineral spirit.

Double waterproofing material of the present invention is characterized in that the waterproof sheet is formed on one surface of the gel-like coating waterproof composition, the nonwoven fabric layer of the waterproof sheet is impregnated in the gel-like coating waterproof composition, the waterproof sheet, the mass per unit area of 80 to Nonwoven fabric layer of 140 g / m ² ; A rubber asphalt mixture layer formed on the nonwoven fabric layer; And it is preferable to include a waterproof film layer formed on the rubber asphalt mixture layer. The nonwoven fabric of the nonwoven fabric layer is characterized in that the polyester nonwoven fabric.

Method for producing a gel-coated waterproofing composition of the present invention is an asphalt compound mixing step of mixing an asphalt compound including asphalt, process oil and petroleum solvent at a temperature of 80 to 120 ℃; An oil separation inhibitor input step of introducing an oil separation inhibitor into the asphalt compound; And a synthetic rubber compound input step of introducing a synthetic rubber and an aromatic hydrocarbon solvent into the asphalt compound.

In the asphalt compound mixing step, the volume ratio of the process oil and the petroleum solvent is 10: 4 to 10: 8, the process oil is at least one of paraffinic oil, naphthenic oil or aromatic oil, the petroleum solvent It is preferable to contain at least one of an aromatic hydrocarbon solvent or a mineral spirit.

The oil-separation preventing agent is pulverized in a colloidal state, characterized in that the tip speed during grinding is 5 to 25m / s, and further comprising an additive input step of adding an additive after the synthetic rubber compound input step, the additive is It is preferably at least one of a mineral stabilizer, an antioxidant, a calcite, fly ash, calcium carbonate, silicon dioxide or a cellulose filler.

In addition, the asphalt compound, the anti-separation agent, the synthetic rubber compound and the additive is characterized in that for 1 to 2 hours stirring under a temperature of 50 to 70 ℃.

The construction method of the double waterproofing material of the present invention, the coating step of applying a coating film waterproof composition on the base surface; A first bonding step of adhering a first waterproof sheet on the coating waterproof composition; And a second bonding step of applying the coating film waterproof composition to the distal end of the first waterproof sheet and attaching the second waterproof sheet to overlap the second waterproof sheet. The second bonding step is repeated one to three times.

The coating thickness of the coating film waterproof composition in the coating step is 1.0 to 2.5mm, the coating thickness of the coating film waterproof composition in the second bonding step is preferably 0.3 to 1.5mm, after the second bonding step, It characterized in that it further comprises a waterproof film bonding step of applying the coating film waterproof composition to the end of the waterproof sheet and adheres the waterproof film.

According to the present invention, by reducing the content of petroleum solvent mixed with asphalt and replacing it with an optimal ratio with process oil, the content of environmentally friendly and highly volatile petroleum solvent is reduced to maintain the semi-permanent gel state excellent adhesion and durability And a waterproof coating composition of high stability and reliability is provided.

In addition, the quaternary ammonium compound includes an oil-separating agent, which is an organic clay containing bentonite or hectorite or a salt compound containing an acidic polyester and an unsaturated polyamine amide, so that the quaternary ammonium compound is uniformly blended without oil separation and mixed with asphalt and solvents. By maintaining for a long time, the oxidation of asphalt is prevented to provide a waterproof composition having excellent waterproof effect.

In addition, in preparing a gel-like waterproofing composition, an asphalt compound and a synthetic rubber compound may be blended in an optimum content, and a colloidal oil separation agent may be added to provide a method for producing an excellent waterproofing composition by increasing dispersion.

In addition, it provides a double waterproof material that can be waterproof double by combining with a waterproof sheet containing a non-woven fabric that can maximize the adhesive strength with the gel-like waterproof composition.

In addition, it is possible to omit the coating step of the asphalt primer during the construction of the double waterproofing material by improving the adhesion of the waterproof composition, the construction is convenient, the time can be shortened, and there is an economic effect. In addition, it is possible to maximize the waterproof effect by applying the waterproof composition and overlapping the waterproof sheet at the same time, it provides a construction method of the double waterproof material that can be partially repaired even if the defect occurs repeatedly.

1 is an exploded view of the waterproof sheet of the present invention
Figure 2 is a cross-sectional view of the waterproof sheet of the present invention
Figure 3 is a flow chart sequentially showing a method for producing a gel-like coating waterproof composition of the present invention
Figure 4 is a flow chart sequentially showing a construction method using a double waterproof material including a gel-like coating waterproof composition and a waterproof sheet of the present invention
5 is a cross-sectional view of the overlapping portion between the waterproof sheet during the construction of the double waterproof material of the gel-like coating waterproofing material and the waterproof sheet according to the present invention

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail with respect to a double waterproofing material and a construction method thereof including the gel-like coating waterproofing composition according to the present invention. The present invention may be better understood by the following examples, which are for the purpose of illustrating the present invention and are not intended to limit the scope of protection defined by the appended claims.

The present invention relates to a gel coating waterproofing composition, wherein the gel coating waterproofing composition includes asphalt, process oil and petroleum solvent.

By adjusting the content of the petroleum solvent, it can be replaced by the process oil to improve the durability as a waterproofing material. At this time, the volume ratio of the process oil and the petroleum solvent is preferably 10: 4 to 10: 8, more preferably 10: 6 to 10: 7. If the volume ratio is less than 10: 4, the amount of process oil is relatively high, so it is difficult to maintain the gel state at room temperature, and thus, heating and melting is required during construction.In the case of more than 10: 8, the amount of petroleum solvent is relatively large. If the air temperature is high, an air pocket may occur in the waterproof layer formed of the waterproof composition, thereby causing a problem in that the waterproof effect is reduced due to a defect in the waterproof layer.

Asphalt compound is preferably 60 to 80% by weight, 10 to 30% by weight of process oil, and 5 to 15% by weight of petroleum solvent, while maintaining the volume ratio of process oil and petroleum solvent. More preferably, the asphalt is effective to 75% by weight, 15% by weight process oil, 10% by weight petroleum solvent.

If the asphalt is less than 60% by weight may be a factor of the waterproofing performance, when the asphalt is more than 80% by weight there is a problem that the fluidity is high due to the high viscosity of the asphalt compound. In addition, unlike the existing waterproof composition, by reducing the content of petroleum solvent and replacing the reduced amount of petroleum solvent with process oil, the waterproof performance of the waterproofing material effectively increased.

When the petroleum solvent is less than 5% by weight, the viscosity is high at room temperature, and in particular, there is a problem in that it needs to be heat-melted for construction in winter. As a result, asphalt is easily oxidized and ductility is lowered. On the contrary, if the petroleum solvent exceeds 15% by weight, volatile organic compounds enter the human body through the respiratory tract during construction, which is harmful and harmful to the environment.It is possible to reduce the cost by replacing a part of the petroleum solvent with the process oil. There is a problem that the flexibility is lowered because the petroleum solvent is volatilized to a hardened state after a certain period of time because the water composition is easily volatilized compared to the process oil.

Waterproofing composition of the present invention by reducing the content of petroleum solvent to about 10% by weight, containing about 90% by weight or more of the non-volatile components to maintain a semi-permanent gel state to improve the stability and reliability of waterproofing and concrete structure Responsiveness to behavior, chemical resistance, durability and weather resistance is excellent.

The specific gravity of the process oil is preferably 1.01 to 1.35 times, more preferably 1.05 to 1.20 times, relative to the specific gravity of the petroleum solvent. In the case of applying the waterproof composition and attaching the waterproof sheet, the specific gravity of the petroleum solvent is smaller than the specific gravity of the process oil, so that some of the petroleum solvent floats on the upper layer of the waterproof composition to maintain the adhesive force with the waterproof sheet. If the specific gravity of the process oil is less than 1.01 compared to that of the petroleum solvent, it may be difficult to maintain adhesion to the waterproof sheet. If the specific gravity of the process oil is greater than 1.35, most of the petroleum solvent may be separated from the waterproof composition and volatilized to form a layer. Since the composition is changed to a hardened state, the flexibility of the waterproof composition may be slightly lowered, which may cause a problem of cracking.

The process oil preferably comprises at least one of paraffinic oil, naphthenic oil or aromatic oil, more preferably paraffinic oil. Process oils, along with petroleum solvents, allow asphalt to remain hard at room temperature and retain gel viscosity.

The petroleum solvent preferably contains at least one of an aromatic hydrocarbon solvent or a mineral spirit. Among aromatic hydrocarbon solvents, xylene and toluene are effective. Mineral spirits have low volatility and are effective solvents for maintaining the gel viscosity of waterproof compositions.

In the case where a mixture of aromatic hydrocarbon solvent and mineral spirit is used, the mineral spirit is preferably 80 to 150 parts by weight with respect to 100 parts by weight of aromatic hydrocarbon solvent, and more preferably 90 to 120 mineral spirit with respect to 100 parts by weight of aromatic hydrocarbon solvent. It is effective to be, More preferably, it is most effective that it is 100 weight part of mineral spirits with respect to 100 weight part of aromatic hydrocarbon solvents.

 In addition, the waterproof composition may further include a synthetic rubber compound. It is preferable that the said synthetic rubber compound is 1-15 weight part with respect to 100 weight part of asphalt compounds, More preferably, it is effective that a synthetic rubber compound is 3-12 weight part. If the synthetic rubber compound is less than 1 part by weight, the asphalt compound cannot be given elasticity and thus the durability as a waterproofing material is lowered. If the synthetic rubber compound is more than 15 parts by weight, the synthetic rubber compound contains a petroleum solvent as well as the asphalt compound. As this increases, the content of the petroleum solvent is also increased, asphalt oxidation proceeds due to volatilization, and there is a disadvantage in economic efficiency.

It is preferable that a synthetic rubber compound consists of 20-40 weight% of polyisobutylene resins, and 60-80 weight% of aromatic hydrocarbon solvents. If the polyisobutylene-based resin is less than 20% by weight, the adhesive force or adhesive strength of the synthetic rubber compound may be lowered. If the polyisobutylene-based resin is more than 40% by weight, the viscosity may increase, making it difficult to uniformly mix the aromatic hydrocarbon solvent.

A small amount of C-5 petroleum resin, C-9 petroleum resin or polybutylene may be added as an adhesive for the synthetic rubber compound. The tackifier improves the adhesion and adhesion of the waterproof composition by assisting the synthetic rubber compound.

Another gel coating waterproofing composition of the present invention may include asphalt, process oil, petroleum solvent and oil separation inhibitor.

The oil separation inhibitor serves to prevent components such as process oil or petroleum solvent in the waterproof composition from being separated from the asphalt. That is, the durability of the waterproofing material may be improved by preventing oxidation by increasing the miscibility between asphalt and a solvent.

Wax inhibitors may be used, and more preferably, organic clays containing bentonite or hectorite in quaternary ammonium compounds or salt compounds containing acidic polyesters and unsaturated polyamine amides are effective.

When the oil-separating agent is an organic clay containing bentonite or hectorite in the quaternary ammonium compound, it is most effective that the quaternary ammonium compound is an organic clay in the form of being bonded with bentonite or hectorite by hydrogenation. This not only increases the miscibility by preventing the separation of asphalt and solvent, but also has a waterproofing effect on bentonite or hectorite itself.

Preventing sedimentation by separating process oil or petroleum solvent and asphalt during storage of the gel-like waterproofing composition manufactured as described above, so that the coating work can be efficiently performed during construction. By significantly reducing the fluidity and viscosity of the waterproof composition can be controlled to maintain the gel form continuously. In addition, bentonite or hectorite expands by 13 to 16 times its original volume when absorbed with water, absorbing water up to five times its weight. maintain. This increases the adhesive force with the waterproof sheet and can maximize the waterproof effect due to the strong bonding for a long time.

In addition, when the oil separation agent is an acidic polyester and an unsaturated polyamine amide, the phenomenon of oil separation can be significantly reduced.

The volume ratio of the process oil and the petroleum solvent is preferably 10: 4 to 10: 8, like the gel coating waterproofing composition described above, and the process oil includes at least one of paraffinic oil and naphthenic oil aromatic oil. The solvent preferably contains at least one of an aromatic hydrocarbon solvent or a mineral spirit.

In forming the waterproof composition, it may further include additives such as mineral stabilizer, antioxidant, dispersant, anti-settling agent, to increase the thickening effect and flow prevention effect and storage stability of the waterproof composition. In more detail, the composition may include at least one of pulverized stone, fly ash, calcium carbonate, and silicon dioxide, and the content is preferably 15 to 150 parts by weight based on 100 parts by weight of the asphalt compound.

Performance of the coating film waterproof composition is shown in Table 1 below. This is a test made by the Korea Institute of Construction Industry and Quality. It describes the quality standards and test methods of the waterproof composition.

Test Items Quality standards Test result Test Methods Solid content weight ratio (%) 85 or more 90.7 KS M 3705 Ash weight ratio (%) 15 or more, 45 or more 23.8 KS M 0009 Flow resistance (mm) All three sheets should have a flow length of 3.0 or less and no wrinkles. clear KS F 3211 60 ℃ heat resistance No abnormality clear KS F 4917 Alkali resistance No abnormality clear KS M ISO 1812 -15 ℃ low temperature bendability No abnormality clear KS M 5000 moisture(%) 1.0 or less 0.83 KS M 0010: 2011
(Filmfisher method)

According to the <Table 1>, unlike the conventional invention, even if the replacement of the process oil by reducing the content of the petroleum solvent, the coating film waterproof composition can realize a waterproof composition having excellent performance by satisfying all the quality standards.

Next, the present invention relates to a double waterproof material comprising a gel-like coating waterproof composition, and relates to a double waterproof material in which a waterproof sheet is formed on one surface of the gel-like coating waterproof composition formed by the above composition. This takes the form that the nonwoven fabric layer of the waterproof sheet is impregnated into the gel-like coating waterproof composition.

As illustrated in FIG. 1, the waterproof sheet includes a nonwoven fabric layer 11 having a mass per unit area of 80 to 140 g / m ² , a rubber asphalt mixture layer 12 formed on the nonwoven fabric layer 11, and the rubber asphalt mixture layer ( It is preferable to include the waterproof film layer 13 formed on 12).

Mass per unit area of the waterproof nonwoven fabric sheet layer 11 is from 80 to 140g / m ² is preferable, and the more preferably 95 to 120g / m ^2, it is effective. If the mass per unit area of the non-woven fabric 80g / m ² is less than falls in tensile strength, tear strength, if more than 140g / m ^2, the thickness of the thick non-woven fabric may be difficult to waterproof the gel composition is impregnated into the nonwoven fabric. It is most effective that the nonwoven fabric of the nonwoven fabric layer 11 is a polyester nonwoven fabric. Polyester nonwoven fabric has the advantage of low resilience can be easily impregnated into a gel-like waterproof composition.

The rubber asphalt mixture of the rubber asphalt mixture layer 12 is preferably an asphalt mixture modified with Styrene Butadiene Styrene resin.

Next, the present invention relates to a method for producing a coating gel-like waterproofing composition, and includes an asphalt compound mixing step (S11), an oil separation preventing agent step (S12), and a synthetic rubber compound input step (S13) as shown in FIG.

Asphalt compound mixing step (S11) is a step of preparing an asphalt compound in a liquid state by mixing asphalt, process oil and petroleum solvent. It is preferable that the temperature at the time of mixing is 80-120 degreeC, More preferably, 100-110 degreeC is effective.

In the asphalt compound mixing step (S11), the volume ratio of the process oil and the petroleum solvent is 10: 4 to 10: 8, the process oil is at least one of paraffinic oil, naphthenic oil or aromatic oil, and the petroleum solvent is an aromatic hydrocarbon. It is preferable that it is at least one of a solvent or a mineral spirit.

The oil-separation preventing agent (S12) is a step of adding the oil-separating inhibitor to the asphalt compound and stirring it to prepare a waterproof composition in a gel state having a predetermined viscosity. When adding the oil-separating agent, it is preferable to add in 1 to 3 times to adjust the viscosity or fluidity. The oil-separation inhibitor is carried out after the asphalt compound mixing step (S10) because it is more effective to prevent the separation of the solvent contained in the asphalt compound is added before mixing the synthetic rubber compound.

The oil-separating agent is preferably an organic clay containing bentonite or hectorite in the quaternary ammonium compound or a salt compound containing an acidic polyester and an unsaturated polyamine amide, and it is more effective to grind the organic clay into a colloidal state. . This is to increase the degree of dispersion of the oil separation agent, and by increasing the degree of dispersion, the separation between the process oil or petroleum solvent and asphalt can be effectively reduced.

When grinding the oil-separating agent in the colloidal state, the tip speed of the grinder is preferably 5 to 25 m / s, more preferably 10 to 20 m / s. If the tip speed is less than 5m / s or more than 20m / s, there is a problem that it is difficult to grind into a colloidal form suitable for the waterproof composition.

Synthetic rubber compound input step (S13) is a step of injecting a synthetic rubber compound consisting of a synthetic rubber and an aromatic hydrocarbon solution. Adhesiveness can be provided by adding a synthetic rubber compound.

It is preferable to further include an additive input step (S14) for adding an additive after the synthetic rubber compound input step (S13), it is possible to produce a gel-like coating waterproof composition having excellent storage stability by uniformly blending without a precipitate by the additive. The additive is at least one of a mineral stabilizer, an antioxidant, a calcite, fly ash, calcium carbonate, silicon dioxide or a cellulose filler.

In stirring an asphalt compound, an oil separation inhibitor, a synthetic rubber compound, and an additive, it is preferable to make it at the temperature of 50-70 degreeC, More preferably, 55-65 degreeC is effective. When the temperature at the time of stirring is less than 50 ℃, it is difficult to uniformly mix, if the temperature is more than 70 ℃ low viscosity of the waterproof composition during the packaging operation of the final coating film waterproof composition has a problem in the safety of the packaging operation. Stirring time is preferably 1 to 2 hours, this is also to produce a uniformly mixed waterproof composition. If the stirring time is less than 1 hour, sufficient stirring is not made, and if the stirring time exceeds 2 hours, there is a disadvantage in terms of economics.

Next, the present invention also relates to a method of constructing a double waterproof material using a gel-like waterproof composition and a waterproof sheet, as shown in Figure 4, the coating step (S21), the first bonding step (S22) and the second bonding step ( S23) is preferable, and sectional drawing after construction is as FIG.

Before the coating step (S21), first, flatten the concrete base surface 21 to be waterproofed, and then remove foreign substances such as soil, sand, dust and the like cleanly.

Asphalt primer may be applied to the base surface 21 before the waterproof composition 22 is applied. However, the gel-like waterproofing composition 22 according to the present invention has a petroleum solvent as an optimal content, and thus the weak part that is easily prone to waterproofing without a separate asphalt primer coating process is completely adhered to the concrete surface by the adhesive force of the gel-like waterproofing composition 22. It is possible to omit the asphalt primer coating process by enabling effective waterproofing by bonding.

In applying the waterproof composition 22 in the application step (S21), the coating thickness is preferably 1.0 to 2.5mm, more preferably 1.5 to 2.0mm. If the coating thickness is less than 1.0mm, the coating thickness is not thin enough to bring a sufficient waterproof effect, and if the coating thickness is more than 2.5mm, the thickness is thick, the overall durability is lowered, there is a problem in terms of economic efficiency.

 After applying the waterproof composition 22, the first waterproof sheet 23 is adhered onto the waterproof composition 22 by the first bonding step S22. The nonwoven fabric surface of the first waterproof sheet 23 is lightly pressed on the waterproof sheet 23 so that the nonwoven fabric surface is adhered to the waterproof composition 22 to closely adhere the waterproof sheet 23 to the waterproof composition 22.

The first bonding step (S22) is preferably made within 1 to 10 minutes after the coating step (S21). If the waterproof sheet is adhered within 1 minute after application, the adhesive composition is weak due to insufficient drying of the waterproof composition. If the waterproof sheet is exceeded for 10 minutes, the waterproof composition may be partially cured due to exposure in the air, making it difficult to impregnate the waterproof sheet. .

In the second bonding step S23, the second waterproof sheet 24 is adhered to the distal end of the first waterproof sheet bonded in the first bonding step S22. The first waterproof sheet and the second waterproof sheet mean the same waterproof sheet in the present invention, and the first and second terms are used to express the bonding order.

The waterproof composition is applied to a thickness of 0.3 to 1.5 mm at a width of 7 to 15 cm around the end of the first waterproof sheet. Since the waterproof composition 22 was first applied in the coating step S21, it is preferable to apply the waterproof composition 25 in a smaller amount than the coating step S21 in the second bonding step S23.

By repeating the second bonding step (S23) it is possible to more effectively increase the waterproof force of the waterproofing material. In addition, in the case of such a construction method, partial repair can be easily performed even if a defect problem occurs.

After the second bonding step (S23), it is preferable to further include a waterproof film bonding step (S24) for bonding the waterproof film 25 on the distal end of the second waterproof sheet. It is possible to completely reinforce the watertightness by adhering the portion of the first waterproof sheet and the second waterproof sheet with the waterproof film 25 to block the penetration of water or moisture into the waterproof material and to facilitate the subsequent construction work. In detail, the waterproof composition 25 is attached to the center of the distal end of the second waterproof sheet and the waterproof film 25 is 15 to 30 cm wide at the same time.

Hereinafter, the examples and comparative examples in which the characteristics of the double waterproofing material formed using the double waterproofing material including the gel-like waterproofing material composition and the construction method thereof are examined.

The evaluation method of the experimental example of this invention is as follows.

(Waterproof performance)

The double waterproofing material was constructed including the coating waterproofing composition, and water was poured at 30 ° C. over the double waterproofing material, and then examined for permeability.

(durability)

The double waterproofing material was constructed including the coating waterproofing composition, and the temperature was raised or lowered from -20 ° C to 80 ° C and the crack was generated after 5 hours exposure to strong ultraviolet rays.

(Adhesion with the base)

A double waterproofing material was formed on the base surface, and whether or not there was peeling phenomenon due to poor adhesion was examined.

(Adhesive holding force)

After forming a double waterproofing material on the base surface, and irradiated with ultraviolet rays for 14 days, it was examined whether there was a peeling phenomenon due to poor adhesion.

(Eco-Friendly)

A double waterproofing material was configured to include a coating waterproofing composition, and the release amounts of benzene, xylene, and ethylbenzene were measured in units of 1 day, 3 days, 5 days, and 7 days.

(Reduces oil separation)

After forming the coating waterproof composition, and maintained at room temperature for 5 days, the thickness of the solvent layer to be separated was measured.

<Table 2> is a waterproof composition (example) of the waterproof composition formed by the present invention and the waterproof composition (comparative example) outside the content range of the asphalt compound of the present invention, durability, adhesion to the surface, construction, environmentally friendly Experimental data comparing sex and economics.

Example

An asphalt compound composed of 75 wt% asphalt, 15 wt% process oil, and 10 wt% petroleum solvent;

Anti-separation agents;

Synthetic rubber compound consisting of 30% by weight of synthetic rubber and 70% by weight of petroleum solvent;

Oil separation inhibitors; And

Double waterproofing material including gel-like waterproofing composition and waterproof sheet containing disintegrated stone, fly ash, calcium carbonate and silicon dioxide

Comparative Example  One

In Example 1, the asphalt compound is a double waterproof material comprising a waterproof composition changed to 65% by weight asphalt and 35% by weight process oil

Comparative Example  2

In Example 1, the asphalt compound is a double waterproofing material comprising a waterproof composition changed to 60 wt% asphalt, 10 wt% process oil and 20 wt% petroleum solvent.

Example Comparative Example 1 Comparative Example 2 Waterproof performance ◎ ○ ○ durability ◎ ◎ △ Adhesive to the surface ◎ ○ ○ Adhesion ◎ ○ ○ Constructability ◎ × ◎ Eco-friendly △ ○ × Economics ◎ △ △

※ ◎ Excellent, ○ Good, △ Normal, × Bad

As shown in Table 2 above, Comparative Example 1 forms an asphalt compound with only process oil without using a petroleum solvent as compared to the embodiment of the present invention, thereby decreasing the adhesiveness of the waterproof sheet and the flexibility of the waterproof composition. Since the gel is maintained at a high viscosity at room temperature because it is reduced, there is a problem that heating and melting should be performed during construction, resulting in poor workability. On the contrary, Comparative Example 2 is harmful to the environment due to the generation of volatile organic compounds due to the high content of petroleum solvent, and has a problem in that the durability of the waterproofing material is lowered since the petroleum solvent is changed to a hardened state.

Next, <Table 3> is convenient for the construction of the waterproof composition (example) out of the volume ratio range of the process oil and the petroleum solvent contained in the asphalt compound of the present invention formed by the present invention (comparative example) Experimental data comparing the performance, durability, adhesion to the surface and waterproof performance.

Example  One

Double waterproofing material comprising an asphalt compound comprising asphalt, process oil and petroleum solvent, and comprising a volume ratio of the process oil and the petroleum solvent is 10: 4.

Example  2

In Example 1, the double waterproofing material including a waterproof composition changed to include the volume ratio of the process oil and petroleum solvent to 10: 6.

Example  3

In Example 1, the double waterproofing material including a waterproof composition changed to include the volume ratio of the process oil and petroleum solvent to 10: 8

Comparative Example  One

In Example 1, the double waterproofing material including a waterproof composition changed to include the volume ratio of the process oil and petroleum solvent to 10: 3.

Comparative Example  2

In Example 1, the double waterproofing material including a waterproof composition changed to include the volume ratio of the process oil and petroleum solvent to 10: 9

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Constructability ◎ ◎ ◎ △ ○ durability ○ ◎ ○ △ × With base
Adhesiveness ◎ ◎ ◎ ○ × Waterproof performance ◎ ◎ ○ △ ×

※ ◎ Excellent, ○ Good, △ Normal, × Bad

As shown in Table 3, in Examples 1 to 3 in which the process oil and the petroleum solvent are contained in an optimal ratio in the present invention, the construction is easy to maintain the gel state at room temperature as a whole. In contrast to the good adhesiveness and excellent waterproofing effect, Comparative Examples 1 and 2 having different volume ratios are remarkably poor in durability and waterproofing performance, and it is difficult to function properly.

Finally, Table 4 below is an experimental data comparing the effect of reducing oil separation phenomenon, durability and waterproofing performance of the waterproofing composition (example) formed by the present invention and the waterproofing composition (comparative example) outside the present invention.

Example  One

Oil-proofing agent is a double waterproofing material including a waterproof composition comprising quaternary ammonium compound and bentonite

Example  2

In Example 1, the oil-separating agent is a double waterproofing material comprising a waterproof composition changed to include a quaternary ammonium compound and hectorite

Example  3

In Example 1, the oil-separating agent is a double waterproofing material comprising a waterproof composition changed to a salt compound containing an acidic polyester and an unsaturated polyamine amide

Comparative Example  One

In Example 1, the oil-separation preventing agent is a double waterproofing material including a waterproof composition changed to wax

Comparative Example  2

In Example 1, the oil-separation preventing agent is a double waterproof material containing a waterproof composition changed to bentonite

Comparative Example  3

In Example 1, the double waterproofing the waterproof composition changed to not containing an oil separation inhibitor

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Reduced oil separation ◎ ◎ ◎ △ △ × durability ◎ ○ ◎ ○ △ × Waterproof performance ◎ ◎ ◎ △ △ ×

※ ◎ Excellent, ○ Good, △ Normal, × Bad

As shown in Table 4, in the present invention, the oil-separating agent is an organic clay containing bentonite or hectorite in the quaternary ammonium compound, and examples 1 and 2 include acidic polyesters and unsaturated polyamides and amides. In the case of Example 3 which is a salt compound, the separation of asphalt and solvent is remarkably reduced, and the durability and waterproofing performance are very excellent, whereas in Comparative Examples 1 and 2 using wax or bentonite as an oil separation agent, It can be seen that the durability is low, in the case of Comparative Example 3 that does not contain the oil separation inhibitor, it can be seen that the performance as a waterproofing material is significantly low. This is because it does not contain the oil-separation inhibitor, the problem of separation of the solvent and asphalt after 1 to 2 months after construction, there is a problem that the solvent is easily volatilized, because the asphalt is oxidized and durability is poor.

That is, through the above experiment it was proved that the waterproof material according to the present invention has excellent durability and waterproof effect due to the excellent adhesive strength with the waterproof sheet or the base surface.

As mentioned above, the structure of this invention was demonstrated in detail with reference to an experimental example. However, the scope of the present invention is not limited to the above experimental examples, and may be embodied in various forms of experimental examples within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

11: nonwoven fabric layer
12: rubber asphalt mixture layer
13: waterproof film layer
14: Release film overlapping between the waterproof sheet
21: concrete slab
22, 25: gel-like waterproofing composition
23: first waterproof sheet
24: second waterproof sheet
26: waterproof film

Claims (22)

Asphalt compounds including asphalt, process oils and petroleum solvents and anti-segregation agents, which are organic clays containing bentonite or hectorite in quaternary ammonium compounds, or include acidic polyesters and unsaturated polyamine amides. Gel-like coating waterproof composition, characterized in that the salt compound. The method of claim 1,
The volume ratio of the process oil and the petroleum solvent is 10: 4 to 10: 8 gel-like coating waterproof composition. The method of claim 1,
The asphalt compound, the asphalt is 60 to 80% by weight, the process oil is 10 to 30% by weight, the petroleum solvent is a gel coating composition, characterized in that consisting of 5 to 15% by weight. The method of claim 1,
The specific gravity of the process oil is a gel-like coating waterproof composition, characterized in that 1.01 to 1.35 times the specific gravity of the petroleum solvent. The method of claim 1,
The process oil is a gel coating film waterproof composition comprising at least one of paraffin oil, naphthenic oil or aromatic oil. The method of claim 1,
The petroleum solvent is a gel coating waterproof composition comprising at least one of an aromatic hydrocarbon solvent or a mineral spirit. The method of claim 1,
The gel coating film waterproof composition further comprises a synthetic rubber compound, the gel coating film waterproof composition, characterized in that 1 to 15 parts by weight of the synthetic rubber compound relative to 100 parts by weight of the asphalt compound. 8. The method of claim 7,
The synthetic rubber compound is a 20 to 40% by weight polyisobutylene resin and 60 to 80% by weight of an aromatic hydrocarbon solvent, a gel-like coating waterproof composition. delete delete A waterproof sheet is formed on the gel-like coating waterproof composition according to any one of claims 1 to 8,
In the lower portion of the waterproof sheet is provided with an additional layer,
Double waterproofing material, characterized in that the nonwoven fabric layer is impregnated into the gel coating waterproof composition. 12. The method of claim 11,
The waterproof sheet, the nonwoven fabric layer having a mass per unit area of 80 to 140g / m ² ;
A rubber asphalt mixture layer formed on the nonwoven fabric layer; And
Double waterproofing material comprising a waterproof film layer formed on the rubber asphalt mixture layer. 13. The method of claim 12,
The nonwoven fabric of the nonwoven fabric layer is a double waterproof material, characterized in that the polyester nonwoven fabric. Asphalt compound mixing step of mixing the asphalt compound including asphalt, process oil and petroleum solvent at a temperature of 80 to 120 ℃;
A method of preparing a gel-coated waterproofing composition comprising an oil separation inhibitor, a synthetic rubber, and an aromatic hydrocarbon solvent into the asphalt compound. The method of claim 14,
In the asphalt compound mixing step, the volume ratio of the process oil and the petroleum solvent is 10: 4 to 10: 8, the process oil is at least one of paraffinic oil, naphthenic oil or aromatic oil, the petroleum solvent A method for producing a gel-like coating waterproof composition comprising at least one of an aromatic hydrocarbon solvent or a mineral spirit. The method of claim 14,
The oil-separation preventing agent is pulverized in the colloidal state, the grinding speed of the method of producing a gel-like coating waterproof composition, characterized in that 5 to 25m / s. The method of claim 14,
After the synthetic rubber compound is added to the step of adding an additive to the additive, the additive is a gel phase, characterized in that at least one of a mineral stabilizer, antioxidant, calculi, fly ash, calcium carbonate, silicon dioxide or cellulose filler Method for producing a coating waterproof composition. 18. The method of claim 17,
After the additive input step, the asphalt compound, the oil-separation inhibitor, the synthetic rubber compound and the additive method for producing a gel-like coating waterproof composition, characterized in that for 1 to 2 hours stirring at a temperature of 50 to 70 ℃. The method of claim 14,
The oil-separation preventing agent and the synthetic rubber compound input step is a method for producing a gel-like coating waterproof composition, characterized in that the synthetic rubber and the aromatic hydrocarbon solvent is added after the oil-separation inhibitor to the asphalt compound. A coating step of applying the gel-like coating composition according to any one of claims 1 to 8 on a base surface;
A first bonding step of adhering a first waterproof sheet onto the gel-like coating waterproof composition;
And a second bonding step of applying the gel-like coating waterproof composition to the distal end of the first waterproof sheet and attaching the second waterproof sheet to overlap the second waterproof sheet, wherein the second bonding step is repeated one to three times. Construction method of double waterproofing material. The method of claim 20,
The coating thickness of the gel-like coating waterproof composition applied to the base surface is 1.0 to 2.5mm, the coating thickness of the gel-like coating waterproof composition applied to the distal end of the first waterproof sheet is 0.3 to 1.5mm Construction method of waterproofing material. The method of claim 20,
After the second bonding step, the method of constructing a double waterproofing material, characterized in that further comprising a waterproof film bonding step of applying the gel-like coating waterproof composition to the distal end of the second waterproof sheet and adhering the waterproof film.

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