KR102113548B1 - Complex waterproof sheet with responsive to the movement and waterproofing method using the same - Google Patents

Abstract

The present invention relates to a composite waterproof sheet responding to movement and a waterproof construction method using the same, wherein the composite waterproof sheet includes: an adhesive layer having a recycling high-adhesive seal; a core material layer arranged on the adhesive layer; an asphalt layer arranged on the core material layer; and a silica layer arranged on an upper portion of the asphalt layer, thereby preventing deformation of and damage to the composite waterproof sheet capable of being generated by contraction and expansion caused by movement of a concrete structure and a season change. Therefore, durability of the waterproof layer can be increased, and stable waterproofing performance can be implemented.

Description

Complex waterproof sheet with responsive to the movement and waterproofing method using the same}

The present invention relates to a behavior-response composite waterproof sheet and a waterproof construction method using the same, and more specifically, an adhesive layer, a core material layer, an asphalt layer and a silica layer including recycled high-adhesion seals on a behavior-response composite waterproof sheet. Included, it relates to a behavior-compatible composite waterproof sheet and a waterproof construction method using the same, which can prevent deformation and damage of the composite waterproof sheet that may occur due to contraction and expansion according to the behavior and seasonal changes of the concrete structure.

In general, when sewage, rainwater, or groundwater penetrates a civil structure such as a rooftop, underground outer wall, underground parking lot, or common ward of a building, the binding strength of the concrete material constituting the structure decreases and can be solidified by eroding and flowing lime. Waterproofing is a very important factor in concrete structures because the water-infiltrated concrete part has voids and cracks, which shortens the life of building and civil structures.

The waterproofing method is classified into a waterproofing method of a coating film, a waterproofing method of a sheet, and a composite waterproofing method of a coating film sheet. First, the waterproofing method of a coating film is coated with a synthetic rubber-based, asphalt-based, synthetic resin-based waterproofing agent having excellent adhesion to the surface of a concrete building structure to provide a waterproof effect As a method of obtaining, there is a construction effect of forming an adhesive layer having no connecting portion, but various defects frequently occur due to unevenness of the thickness of the adhesive layer, air pockets, and occurrence of floating of the adhesive layer. In particular, there is a limit to check the wet state of the concrete structure during construction because it is impossible to construct depending on the moisture content and wet condition of the concrete surface.

The sheet waterproofing method is a method of obtaining a waterproofing effect by sticking a waterproofing sheet according to a standard, which has been produced at a predetermined thickness in the factory, to the surface of a concrete building structure.It has excellent safety in construction quality, but overlapping parts where the waterproofing sheets overlap each other during construction are inevitable. As it occurs, the overlapping portion requires a lot of attention to construction because the construction quality may vary depending on the skill of the construction engineer and the bonding stability of the waterproof sheet.

The coating film composite waterproofing method is a method of obtaining a waterproof effect by using a waterproofing material in which a coating film waterproofing material and a waterproofing sheet are mixed in combination, by a method combining only the advantages of the coating film waterproofing method and the sheet waterproofing method, or by using organic materials contained in the waterproofing material. The water-repellent function may be lost due to the dissolving or separating of the lower layer of the sheet waterproofing material or separation between the composite layers, the construction period is long, and the construction cost is very expensive compared to the conventional coating film waterproofing method and sheet waterproofing method. have.

Recently, the trend of waterproofing construction is from waterproofing to waterproofing method to sheet waterproofing method, and the composite waterproofing method is mainly used, but recently, an adhesive composite sheet waterproofing method with low construction cost and easy construction has been developed to attract attention as waterproofing work. I am receiving.

The adhesive composite sheet waterproofing method has an advantage in that it is not only convenient to construct by forming an adhesive layer having excellent adhesion to the surface of the concrete structure and one surface of the waterproofing sheet, but also can be constructed without special construction technology. In addition, due to the adhesive layer having excellent adhesion, it has excellent responsiveness to climate change during the winter season, so the construction speed is faster than that of the existing sheet waterproofing method.

However, due to the chemical heterogeneity between the adhesive layer and the asphalt layer having excellent water resistance, the asphalt layer is denatured according to the change in the outside temperature, resulting in defects in the separation between the adhesive layer and the asphalt layer. In addition, as the asphalt component forming the asphalt layer in the waterproof sheet is melted, bubbles are generated therein, and thus the waterproof sheet is warped or deformed, thereby causing the concrete structure and the waterproof sheet to float.

In addition, because the behavior of the concrete structure and the change in seasons, the waterproof sheet overlaps with each other, the adhesion of the overlapping portion, lifting, peeling, and the like arise, so that the behavior-response composite waterproof sheet and concrete structure that can prevent such problems It is necessary to develop a technology for the construction method of a composite waterproof sheet that can cope with the behavior of.

Registered Patent No. 10-1857121 (Registration on May 4, 2018)

In the present invention, in order to prevent the deformation and damage of the composite waterproof sheet according to the behavior and seasonal changes of the concrete structure, the behavior-response composite waterproofing includes an adhesive layer, a core material layer, an asphalt layer, and a silica sand layer including a recycled high adhesive seal. It is to provide a sheet and a waterproof construction method using the same.

One embodiment of the present invention for solving the above problems is an adhesive layer 110 including a recycled high adhesive seal; A core material layer 120 disposed on the adhesive layer 110; An asphalt layer 130 disposed on the center material layer 120; And a silica sand layer 140 disposed on the asphalt layer 130.

The recycled high-tack adhesive is 100 parts by weight of the waste synthetic rubber sheet composition, 2 to 15 parts by weight of process oil, 3 to 12 parts by weight of new rubber, 2 to 10 parts by weight of gum resin, 1 to 8 parts by weight of adhesion promoter and modifier 1 It may contain ~ 5 parts by weight.

The adhesion promoter may be conchiolin.

The modifier may include a polymer resin represented by Chemical Formula 1.

(Formula 1)

(In the formula (1), R1, R2 and R4 are ketones, R3 is an aromatic ring group (aryl group) containing an alkylsilyl group having 6 to 15 carbon atoms, R5 is an aromatic ring group (aryl group), n is 5 to 20 Integer)

Another embodiment of the present invention relates to a method of waterproofing using the behavior-response composite waterproof sheet, the joint to which the joint sheet 200 is attached to the adhered surface of the area where the joint between each composite waterproof sheet is to be formed. Attaching the seat sheet; A composite waterproof sheet attaching step of attaching the composite waterproof sheets on the adhered surface and the joint sheet 200 so that each composite waterproof sheet is spaced apart from each other by a predetermined distance on the joint sheet 200; An adhesive reinforcement layer forming step of forming an adhesive reinforcement layer 300 by sealing an adhesive to the spaced portion A; And an upper finishing step of forming a joint finishing layer 400 by applying silica sand on the adhesive reinforcing layer 300.

The joint sheet 200 may include a base layer 210 and joint bonding layers 220 and 230 disposed on both sides of the base layer 210.

The behavior-response composite waterproof sheet of the present invention is applied with a recycled high-adhesive seal obtained by recycling a synthetic rubber sheet that has been disposed of previously, thereby reducing the cost, time, and environmental pollution problems required for disposal of the synthetic rubber sheet. Have an effective effect

In addition, the adhesive layer of the composite waterproof sheet for behavior is excellent in adhesion and has little change in physical properties due to changes in temperature or humidity, so there is little deformation or damage due to the behavior of the concrete structure and seasonal changes, and it is composited through a waterproof construction method using it. Since the buffer portion is formed according to the behavior of the joint of the waterproof sheet, there is an advantage that can further improve the durability and life of the waterproof layer completed construction.

1 is a view showing a behavior-response composite waterproof sheet according to an embodiment of the present invention.
2 and 3 are views schematically showing a waterproof construction method using a behavior-response composite waterproof sheet according to another embodiment of the present invention.
4 is a view schematically showing a top surface and a cross section of a waterproof layer in which a behavior-response composite waterproof sheet according to another embodiment is constructed using an exposed waterproof sheet method.

Before describing in detail through the preferred embodiments of the present invention, terms or words used in the present specification and claims should not be interpreted as being limited to the conventional or dictionary meanings, meanings consistent with the technical spirit of the present invention. And should be interpreted as a concept.

Throughout this specification, when a part “includes” a certain component, it means that the component may further include other components, not to exclude other components, unless otherwise stated.

Hereinafter, an embodiment of the present invention will be described. However, the scope of the present invention is not limited to the following preferred embodiments, and those skilled in the art can implement various modified forms of the contents described herein within the scope of the present invention.

The present invention relates to a behavior-response composite waterproof sheet and a waterproof construction method using the same, a behavior capable of maintaining the waterproof performance for a long time by minimizing the deformation or damage of the composite waterproof sheet according to the behavior of the concrete structure, seasons, or environmental changes. It relates to a composite composite waterproof sheet and a waterproof construction method using the same.

1 is a behavior-response composite waterproof sheet according to an embodiment of the present invention, the adhesive layer 110 including a recycled high adhesive seal; A core material layer 120 disposed on the adhesive layer 110; An asphalt layer 130 disposed on the center material layer 120; And the silica layer 140 disposed on the asphalt layer 130; including, exhibits excellent adhesion performance to the concrete structure to be adhered to, less deformation of the adhesive layer 110 according to the temperature or humidity change, It can prevent damage to the waterproof layer due to environmental or seasonal changes.

The adhesive layer 110 includes a recycled high adhesive seal, wherein the recycled high adhesive seal is 100 parts by weight of a synthetic rubber sheet composition, 2 to 15 parts by weight of process oil, 3 to 12 parts by weight of new rubber, gumresin 2 ~ 10 parts by weight, 1 ~ 8 parts by weight of adhesion promoter and 1 ~ 5 parts by weight of modifier, excellent adhesion, durability, low-temperature stability, high-temperature stability, dimensional stability, waterproof performance, excellent adhesion to wet surfaces, The adhesive performance is stably high even on high humidity days, and it is excellent in deformation resistance due to seasonal or environmental changes.

The center material layer 120 is to form a basic skeleton for maintaining a stable shape by assembling the adhesive layer 110 and the asphalt layer 130, polyester nonwoven fabric, polypropylene nonwoven fabric, polyethylene nonwoven fabric, high density polyethylene nonwoven fabric, It may be formed of at least one material selected from the group consisting of polyethylene terephthalate nonwoven fabrics, fabrics and glass fibers.

The asphalt layer 130 is formed to impart waterproof, rust-proof, and anti-rust performance to the composite waterproof sheet. It is produced by curing an asphalt compound into a predetermined shape and curing it, and the asphalt compound forming the asphalt layer 130 As a main component, asphalt having waterproof, anti-rust, and anti-rust properties may be included, and additional components that may improve strength or other physical and chemical properties without deteriorating the performance may be further included.

For example, the asphalt compound may include a filler for improving the strength of the asphalt layer 130. As such a filler, calcium carbonate, talc, carbon black, clay, glass fiber, mica, silica, talc, lead stone, mica , At least one or more selected from the group consisting of bentonite and diatomaceous earth may be used, but is not limited thereto, and preferably calcium carbonate may be used.

In addition, the asphalt compound may include rubber capable of imparting elasticity to the asphalt layer 130 to respond to the behavior of the concrete structure. The type of rubber is not particularly limited, for example, styrene butadiene rubber (SBR), modified styrene butadiene rubber, butadiene rubber (BR), modified butadiene rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, fluorine rubber, Silicone rubber, nitrile rubber, hydrogenated nitrile rubber, nitrile butadiene rubber (NBR), modified nitrile butadiene rubber, chlorinated polyethylene rubber, styrene butadiene styrene rubber (SBS), styrene ethylene butylene styrene (SEBS) rubber, styrene isoprene styrene rubber ( SIS), ethylene propylene rubber, ethylene propylene diene (EPDM) rubber, hypalon rubber, chloroprene rubber, ethylene vinyl acetate rubber, acrylic rubber, hydrin rubber, vinyl benzyl chloride styrene butadiene rubber and bromo methyl styrene butyl rubber At least one or more selected from may be used, preferably SBS rubber may be used.

The asphalt compound may include a plasticizer to improve the dispersibility and mixability of the asphalt compound by increasing the plasticity, and as a plasticizer, aromatic oil, naphthenic oil, paraffin oil, linseed oil, soybean oil, linseed oil, rice bran oil, etc. Any one or more of petroleum-based, coal-based or plant-based oil may be used.

In addition to this, asphalt compounds may further include other additives such as dispersants, antifoaming agents, heat stabilizers, light stabilizers, and adhesion enhancers as needed to reinforce workability, heat resistance, adhesion, and strength. It can be selected and used in an appropriate amount from a line that does not degrade the properties of the asphalt layer 130, such as waterproofing, anti-rusting, anti-rusting, strength, and the like.

Preferably, the asphalt compound may include asphalt, filler, rubber and plasticizer, in this case, 50 to 82% by weight of asphalt, 12 to 38% by weight of filler, 3 to 20% by weight of rubber and 2 to 15% by weight of plasticizer It can be included in the weight range of.

When the content of the asphalt contained in the asphalt compound is less than 50% by weight, the waterproof, rust-proof, and root-proofing performance is poor, and there is a problem that the durability of the asphalt layer 130 is deteriorated due to insufficient bonding strength for bonding the filler. , If it exceeds 82% by weight, the elasticity of the asphalt layer 130 is insufficient, and thus, a crack or damage may occur in the asphalt layer 130 due to temperature changes or behavior of the concrete structure.

When the content of the filler contained in the asphalt compound is less than 12% by weight, a sufficient strength improvement effect is not obtained, and thus the durability of the asphalt layer 130 is deteriorated, and when it exceeds 38% by weight, the bonding strength to bond the filler is insufficient. Therefore, since the filling material is desorbed and scattered, and the durability of the asphalt layer 130 becomes poor in the long term, it is preferable to be included within the above-mentioned weight range.

The filler is added to improve physical strength, storage stability, and workability, and the type of filler is not particularly limited, but preferably calcium carbonate may be used. When the content of the filler is less than 12% by weight, it is difficult to obtain an effect of improving the physical properties by the filler, and when it exceeds 38% by weight, the workability is reduced due to viscosity improvement, and the tally due to the lack of asphalt and rubber for bonding the filler , Cracks and the like may occur, so it is preferably used in a weight range of 12 to 38% by weight.

In addition, when the content of the rubber is less than 3% by weight, the effect of increasing elasticity obtained by including the rubber is insignificant, and when it exceeds 20% by weight, the elasticity is excellent but the strength may be lowered.

In addition, when the content of the plasticizer is less than 2% by weight, sufficient plasticity is not secured, so that the dispersibility and kneading property of the asphalt compound decreases, and when it exceeds 15% by weight, the viscosity of the asphalt compound is excessively lowered and the layer It is preferable to be included within the above-mentioned weight range, as there is a problem that it is difficult to form a desired shape as well as separation occurs.

The silica layer 140 is formed on the asphalt layer 130 as described above, to improve the aesthetics of the composite waterproof sheet when the composite waterproof sheet is constructed as an exposed type, and to the top of the composite waterproof sheet when constructed as a non-exposed type It can increase the bonding strength with the concrete mortar composition to be constructed.

The silica sand layer 140 may be formed by applying and compressing a silica sand composition on the asphalt layer 130 when viscosity and adhesive strength are present on the asphalt layer 130 before curing of the asphalt layer 130 is completed.

In the silica sand composition, the silica sand may be included alone, and the silica sand and the pigment may be included together to implement various colors on the composite waterproof sheet, or the color coated silica sand may be included. In addition, when using at least two kinds of silica sand compositions having different colors, it is also possible to form a predetermined pattern on the silica sand layer 140.

On the other hand, the adhesive layer 110 is 100 parts by weight of a synthetic rubber sheet composition as described above, 2 to 15 parts by weight of process oil, 3 to 12 parts by weight of new rubber, 2 to 10 parts by weight of gum resin, 1 to 8 adhesion promoters It includes a recycled high-adhesive seal comprising 1 part by weight to 5 parts by weight of a modifier.

The recycled high-adhesive seal has excellent adhesive strength, and can adhere materials of various materials, and has excellent strength, durability, dimensional stability, waterproofness, and heat resistance, and is applicable to various fields as well as the construction and building fields.

The waste synthetic rubber sheet composition contained in the recycled high adhesion seal is made to be reusable by giving solubility to the waste synthetic rubber sheet including asphalt, rubber, petroleum resin, etc. Although it is difficult to recycle the rubber sheet product containing the product to have uniform physical properties conforming to the quality standard, and it is difficult to apply the recycled product to the actual industrial field, it is generally disposed of in a landfill or incineration method. Recycling the rubber sheet that has been disposed of in this way is intended to solve problems such as insufficient landfill due to landfill disposal, environmental load, air pollution caused by incineration disposal, and excessive disposal costs.

The waste synthetic rubber sheet may be a piece of the waste synthetic rubber sheet generated during the manufacturing process, a scrapped waste synthetic rubber sheet, or a waste synthetic rubber sheet having a defect.

The waste synthetic rubber sheet composition used in the present invention is mixed with the waste synthetic rubber sheet and asphalt and heated to 140 to 180 ° C, and the asphalt, rubber, and petroleum resin contained in the waste synthetic rubber sheet are newly added to the asphalt. It is obtained by melting together, and after melting, foreign matters of a predetermined size or more collected together with the waste synthetic rubber sheet, and materials that are not melted, such as a core material contained in the waste synthetic rubber sheet, are removed by physical filtration, The purity of the waste synthetic rubber sheet composition can be maintained high. Therefore, the quality of the recycled high adhesion seal to be manufactured afterwards can be maintained uniformly.

Such a waste synthetic rubber sheet composition may include 52 to 86% by weight of asphalt, 5 to 25% by weight of process oil, 5 to 20% by weight of rubber, 2 to 17% by weight of petroleum resin and 1 to 20% by weight of calcium carbonate, When the waste synthetic rubber sheet contains additional additives such as flame retardants, plasticizers, lubricants, antioxidants, light stabilizers, antistatic agents, heat stabilizers, etc., these additives total 0.01 to 2.00% by weight in the waste synthetic rubber sheet composition. Range.

When the composition ratio of the components constituting the waste synthetic rubber sheet composition is out of the above weight range, the physical properties of each product are different even if the physical properties of the recycled high-adhesive seal finally obtained are out of quality standards or satisfy the quality standards. Since it may deteriorate, it is preferable to use a waste synthetic rubber sheet composition having the above-described components and component ratios.

The process oil included in the recycled high-adhesive seal is added to improve the waterproof performance and fluidity to the recycled high-adhesive seal, and at least one or more oils of petroleum-based, coal-based and vegetable-based oils can be used as the process oil. have.

Aromatic, naphthenic, and paraffinic oils may be used as the petroleum-based and coal-based oils, and linseed oil, soybean oil, linseed oil, rice bran oil, etc. may be used as the vegetable oil, but are not limited thereto.

The process oil may be included in 2 to 15 parts by weight based on 100 parts by weight of the waste synthetic rubber sheet composition, and when it is contained in less than 2 parts by weight, the viscosity of the recycled high-adhesive seal is excessively high, making it difficult to uniformly mix in the manufacturing process. And, there is a problem that the workability is deteriorated, and when it exceeds 15 parts by weight, the viscosity of the recycled high-adhesive seal is excessively reduced, so that the components contained in the recycled high-adhesive seal are not uniformly mixed and layer separation occurs, resulting in high-adhesive recycling. It is preferable to be included within the above-mentioned weight ratio because the adhesive strength, durability, and workability of the seal can be reduced.

The new rubber included in the recycled high-adhesive seal is to be added to improve the physical properties and durability of the recycled high-adhesive seal, such as durability, weather resistance, elasticity, and chemical resistance, by causing a self-crosslinking reaction in the recycled high-adhesive seal. , The rubber used as new rubber may be natural rubber or synthetic rubber.

The natural rubber may be a general natural rubber, or a modified natural rubber obtained by modifying natural rubber, for example, polyisoprene, epoxidized natural rubber (ENR), deproteinized natural rubber (DPNR), hydrogenated natural rubber, and the like. .

Synthetic rubbers include, for example, styrene butadiene rubber (SBR), modified styrene butadiene rubber, butadiene rubber (BR), modified butadiene rubber, chlorosulfonated polyethylene rubber, epichlorohydrin rubber, fluorine rubber, silicone rubber, nitrile rubber, Hydrogenated nitrile rubber, nitrile butadiene rubber (NBR), modified nitrile butadiene rubber, chlorinated polyethylene rubber, styrene butadiene styrene rubber (SBS), styrene ethylene butylene styrene (SEBS) rubber, styrene isoprene styrene rubber (SIS), ethylene propylene rubber , Ethylene propylene diene (EPDM) rubber, hypalon rubber, chloroprene rubber, ethylene vinyl acetate rubber, acrylic rubber, hydrin rubber, vinyl benzyl chloride styrene butadiene rubber and at least one selected from the group consisting of bromo methyl styrene butyl rubber It may be the above, but is not limited thereto.

SBS rubber may be preferably used as the new rubber. In the case of SBS rubber, compatibility is excellent, and when SBS rubber is added to the recycled high-adhesion seal, not only the adhesion is remarkably improved, but also the temperature of the recycled high-adhesive seal. This is because it is possible to develop stable adhesive strength in various temperature environments by lowering the rate of change in viscosity with respect to less adhesion with temperature.

The new rubber is preferably included in 3 to 12 parts by weight with respect to 100 parts by weight of the waste synthetic rubber sheet composition, and when it is contained in less than 3 parts by weight, the effect of improving adhesiveness and physical properties and reducing the rate of change in viscosity with respect to temperature is negligible. And, when it is included in excess of 12 parts by weight, the viscosity of the recycled high-adhesive seal is excessively increased, so that mixing is difficult and workability may be deteriorated.

The gum resin contained in the recycled high tack seal is added to improve the adhesion of the recycled high tack seal and at the same time uniformly disperse the components contained in the recycled high tack seal to improve the long-term storage stability of the recycled high tack seal. As being, it may be included in 2 to 10 parts by weight based on 100 parts by weight of the waste synthetic rubber sheet composition.

When the content of gumresin is less than 2 parts by weight based on 100 parts by weight of the waste synthetic rubber sheet composition, the dispersion stability of the components in the recycled high-adhesive seal becomes poor over time, and the adhesion and durability of the recycled high-adhesive seal during long-term storage There is a problem of poor physical properties such as, and when it is contained in excess of 10 parts by weight, the viscosity of the recycled high-adhesive seal becomes excessively high, thereby making it difficult to uniformly disperse each component and making construction difficult.

As the gum resin, at least one or more selected from the group consisting of guar gum, xanthan gum, locust bean gum, gellan gum, gum arabic, pectin and carrageenan may be used.

The adhesion promoter included in the recycled high adhesive seal is for improving the adhesion of the waste synthetic rubber sheet composition, and conkiolin may be used as the adhesion promoter. Conkiolin is an adhesive protein contained in shellfish such as abalone, shellfish, oysters, clams, mother-of-pearl, etc., and has excellent adhesive properties, and has the advantage of forming a strong adhesive force even in the presence of water.

As conkioline is used as an adhesion promoter in the recycled high-adhesive seal, the adhesion of the recycled high-adhesive seal is improved, and there is an advantage of expressing strong adhesion even in a humid environment.

Such an adhesion promoter may be included in 1 to 8 parts by weight based on 100 parts by weight of the waste synthetic rubber sheet composition, and when it is contained in less than 1 part by weight, it is difficult to obtain an effect of enhancing adhesion, and when it is contained in excess of 8 parts by weight, recycle The adhesive strength of the high-adhesive seal is improved, but it is preferable to be included within the above-mentioned weight ratio because physical properties such as durability and strength may be deteriorated.

The modifier included in the recycled high-adhesive seal is added to increase the waterproof performance and dimensional stability of the recycled high-adhesive seal, and a polymer resin represented by Chemical Formula 1 may be included as such a modifier.

(Formula 1)

(In the formula (1), R1, R2 and R4 are ketones, R3 is an aromatic ring group (aryl group) containing an alkylsilyl group having 6 to 15 carbon atoms, R5 is an aromatic ring group (aryl group), n is 5 to 20 Integer)

The modifier may be included to have a weight range of 1 to 5 parts by weight based on 100 parts by weight of the waste synthetic rubber sheet composition, and when the content of the modifier is contained in less than 1 part by weight, the waterproof performance and dimensional stability improvement effect of the recycled high-adhesive seal Is insignificant, and if it exceeds 5 parts by weight, a problem occurs in that the strength decreases, so it is preferably included within the above-mentioned weight range.

At this time, in order to improve the modification effect due to the modifier represented by Formula 1, and further obtain the strength improvement effect, it is preferable that at least one or more modifiers of the compounds represented by Formula 2 or Formula 3 are further included, More preferably, a compound represented by Chemical Formula 1, Chemical Formula 2 and Chemical Formula 3 may be included.

(Formula 2)

(In formula 2, R1 is hydrogen or C1-4 alkyl, and X is C1-10 alkylene)

(Formula 3)

(In the formula (3), R1 is a hydrogen or methyl group, R2 is an alkyl group having 2 to 14 carbon atoms)

In formula (3), R1 is hydrogen or a methyl group. R2 is an alkyl group having 2 to 14 carbon atoms, preferably 3 to 12 carbon atoms, and more preferably 4 to 9 carbon atoms. Moreover, although the alkyl group of R2 may be either linear or branched, branched chain is preferable at the point which can make the glass transition point of an acrylic polymer low.

When all of the compounds represented by Formula 1, Formula 2 and Formula 3 are included as a modifier, the total content of the compounds represented by Formula 2 and Formula 3 is 5 to 24 parts by weight relative to 100 parts by weight of the compound represented by Formula 1 It is preferable, but when it is included in less than 5 parts by weight, the strength improvement effect is insignificant, and when it is included in excess of 24 parts by weight, it is preferable to be included within the above-mentioned weight range because dimensional stability may be poor.

At this time, in order to increase compatibility, dispersibility, and mixability, the compound represented by Formula 2 and the compound represented by Formula 3 are preferably included to have a range of 1: 1 to 2 weight ratio.

The recycled high tack seal can be obtained by mixing the waste synthetic rubber sheet composition with process oil, new rubber, gum resin, adhesion promoter and modifier, preferably, 100 parts by weight of the waste synthetic rubber sheet composition and new rubber 3 A first mixing step of mixing ~ 12 parts by weight and 1 to 5 parts by weight of a modifier at 100 to 150 ° C; and after cooling the mixture obtained through the first mixing step to 60 to 90 ° C, a waste synthetic rubber sheet composition is added to the mixture. 2 to 10 parts by weight of the gum resin with respect to 100 parts by weight, and a second mixing step of further mixing 1 to 8 parts by weight of the adhesion promoter; may be performed in two steps.

As the mixing is performed in a multi-step manner, the reforming reaction in which the rubber and the petroleum resin and the modifier form a copolymer or cross-link in the first mixing step is more efficiently performed, thereby further improving the physical properties of the recycled high-adhesion seal. It has an effect.

On the other hand, another embodiment of the present invention relates to a method for waterproofing construction using the behavior-response composite waterproof sheet described above, and flexibly responds to behavior in a concrete structure using at least two behavior-response composite waterproof sheets. By doing so it relates to a waterproof construction method that can prevent damage to the waterproof layer and increase the waterproof life.

The behavior-response composite waterproof sheet used in the present embodiment is the same as that described in one embodiment of the present invention, and thus redundant description is omitted.

2 and 3 schematically illustrate a waterproof construction method using a behavior-response composite waterproof sheet according to another embodiment of the present invention.

2 and 3, the waterproof construction method using the behavior-response composite waterproof sheet according to another embodiment of the present invention, the joint sheet on the surface of the area where the joint portion between the composite waterproof sheet 100 is to be formed Attaching the joint sheet to attach (200); A composite waterproof sheet attaching step of attaching the composite waterproof sheets on the adhered surface and the joint sheet 200 so that each composite waterproof sheet is spaced apart from each other by a predetermined distance on the joint sheet 200; An adhesive reinforcement layer forming step of forming an adhesive reinforcement layer 300 by sealing an adhesive to the spaced portion A; And an upper finishing step of forming a joint finishing layer 400 by applying silica sand on the adhesive reinforcing layer 300.

First, the joint sheet attaching step is a step of attaching the joint sheet 200 to a surface to be adhered to a region where joints between the plurality of composite waterproof sheets 100 are to be formed. Here, in the general waterproof sheet construction, the joint part means a portion where the waterproof sheets overlap or contact each other.

The joint sheet 200 includes a base layer 210 serving as a core material, and joint joint layers 220 and 230 disposed on both sides of the base layer 210, and both sides have adhesive strength. The base layer 210 may be formed of at least one material selected from the group consisting of polyester non-woven fabric, polypropylene non-woven fabric, polyethylene non-woven fabric, high-density polyethylene non-woven fabric, polyethylene terephthalate non-woven fabric, fabric and glass fiber, and the joint adhesive layer 220 , 230) is formed of the recycled high-adhesive seal described above, has excellent adhesion, and also shows waterproof performance with the joint sheet 200 itself.

The length of the joint sheet 200 can be appropriately adjusted according to the length of the region where the joint is to be formed, and the width is preferably formed from 50 to 300 mm.

Next, on the joint sheet 200, each composite waterproof sheet 100 is spaced apart from each other by a predetermined distance to form a spaced portion (A), the composite waterproof sheet 100 on the adhered surface and the joint sheet 200 The step of attaching the composite waterproof sheet is performed.

In this step, most of the surfaces of each composite waterproof sheet 100 are attached to the adhered surface, and some surfaces are attached on the joint sheet 200 so as to come into contact with the joint sheet 200, so that the adhered surfaces are composite waterproof The sheet 100 and the joint sheet 200 are completely covered.

At this time, since the composite waterproof sheets 100 attached to one joint sheet 200 are spaced apart at predetermined intervals so as not to overlap or contact each other, the spaced portion A which is an empty space between the composite waterproof sheets 100 Is formed. Therefore, the width (d) of the separation portion (A) is formed smaller than the width of the joint sheet 200, preferably formed smaller than the width of the joint sheet 200, and may be formed to be 5 to 50 mm at the same time. .

Next, in the step of forming the adhesive reinforcement layer, an adhesive is injected into the spacer portion A to seal the spacer portion A, thereby forming adhesion to the side surfaces of the composite waterproof sheet 100 and a portion of the joint sheet 200. The adhesive reinforcement layer 300 is formed. The adhesive reinforcing layer 300 is excellent in elasticity, flexibility, adhesion, and strength, and thus has a characteristic of flexibly responding to changes in the behavior of the concrete structure, and stress applied to the composite waterproof sheet 100 according to the behavior of the concrete structure. By absorbing, it not only performs the function of improving the durability and life of the composite waterproof sheet 100, but also has a waterproof function by itself, so that the problem of deterioration in waterproof performance in the area where the joint is formed can be solved.

As the pressure-sensitive adhesive that provides such an effect, a high-elastic pressure-sensitive adhesive containing 20 to 60% by weight of process oil, 15 to 40% by weight of rubber, 15 to 40% by weight of polymer resin, and 10 to 40% by weight of filler may be used.

As the process oil, at least one or more selected from the group consisting of aromatic oils, naphthenic oils and paraffinic oils can be used, and as the rubber, one or more selected from the group consisting of SBS rubber, SIS rubber, and SBR rubber is synthesized. Rubber may be used, but preferably, SIS rubber having excellent low temperature elasticity and flexibility may be used.

As a polymer resin for improving adhesion and strength, at least one selected from the group consisting of petroleum resins (C5, C9, C5-C9 copolymerization, hydrogenation system), natural resins (rosin esters), coumarone resins, and polybutenes A polymer resin may be used, and at least one or more selected from the group consisting of calcium carbonate, talc, carbon black, clay, glass fiber, mica, silica, talc, pyrite, mica, bentonite, and diatomaceous earth may be used. , But is not limited thereto.

Next, an upper finishing step of forming a seam finishing layer 400 by applying silica sand on the adhesive reinforcing layer 300 is performed. Since the silica sand is attached to the adhesion reinforcement layer 300 by the adhesive force of the adhesion reinforcement layer 300, it is preferable to apply the silica sand when the adhesion reinforcement layer 300 before the application of the silica sand is uncured or partially cured to maintain adhesion. Do.

At this time, although normal silica can be used as the applied silica, color-coated silica is used, or a mixture of silica and pigment is used, so that it is possible to impart a desired color to the joint finishing layer 400.

The waterproof layer formed through the above method may be an exposed waterproof layer or a non-exposed waterproof layer, and in the case of a non-exposed waterproof layer, an additional concrete mortar composition is applied to the upper surface of the waterproof layer. In this case, the waterproof layer is present on the upper surface of the waterproof layer. Since the waterproof layer and the concrete mortar composition can be firmly adhered by the silica sand layer 140 and the seam finish layer 400, problems such as lifting and peeling between the waterproof layer and the layer formed by the concrete mortar composition are prevented, and are excellent. There is an advantage that can express waterproof performance and strength.

On the other hand, when the waterproof layer formed by the above-described waterproof layer is an exposed waterproof layer, a degassing unit for discharging wet air that may occur under the adhered surface may be formed.

In this case, prior to the step of attaching the composite waterproof sheet, the degassing layer 500 is formed by applying silica sand in parallel to the longitudinal direction of the joint sheet 200 on a part of the adhered surface to which the composite waterproof sheet 100 is to be attached, After attaching the composite waterproof sheet 100, an air vent (V) is installed on the composite waterproof sheet 100 overlapping the degassing layer 500, and the humid air of the degassing layer 500 is supplied through the air vent (V). Can be discharged. At this time, it is preferable that the width of the silica sand layer is 10 to 100 mm, and the length is preferably formed to the same or similar length to the composite waterproof sheet.

Air vent (V) is installed to penetrate the composite waterproof sheet 100, a conventional air vent can be used as the air vent (V), a passage for discharging the air of the degassing layer 500 to the outside, the outside If moisture has a structure that does not flow into the degassing layer 500, it can be used without particular limitation.

Hereinafter, specific actions and effects of the present invention will be described through an embodiment of the present invention. However, this is presented as a preferred example of the present invention, and the scope of the present invention is not limited according to embodiments.

[ Manufacturing example  One]

First, in the process of manufacturing a waterproof sheet having a thickness of 2 to 3 mm, including a release layer, an adhesive layer, a center layer, an asphalt layer, and a release layer, a piece of waterproof sheet generated after cutting is collected to remove the release layer and the remaining piece waterproof sheet After mixing with asphalt (AP-3) in a 1: 1 weight ratio, heating at 170 ° C. for 1 hour to melt the adhesive layer and the asphalt layer of the piece waterproof sheet together with the added asphalt, and then the PE nonwoven fabric layer as the central layer. The remaining synthetic rubber sheet composition was filtered and extracted.

At this time, the adhesive layer of the piece waterproof sheet used includes asphalt, process oil, SBS rubber, C5-based petroleum resin, calcium carbonate and additives (a water-repellent agent, heat resistance improver), and the asphalt layer contains asphalt, SBS rubber and additives. What was included was used.

Next, 1,000 g of the previously obtained waste synthetic rubber sheet composition, 83 g of new SBS rubber, and 36 g of modifier were mixed and mixed at 140 ° C. for 2 hours to perform a reforming reaction, cooled to room temperature to 75 ° C., and paraffin-based process oil 101 g, xanthan gum 55 g, and 50 g of conchiolin were added and stirred for 30 minutes to prepare a recycled high adhesion seal of Example 1.

At this time, based on 100 parts by weight of the compound represented by Chemical Formula 1 as a modifier, a mixture of 8 parts by weight of Compound represented by Chemical Formula 2 and 12 parts by weight of Compound represented by Chemical Formula 3 was used.

[ Experimental Example  One]

The adhesive strength, flexural resistance, tensile strength, dimensional stability, water permeation resistance performance, wet surface adhesion performance, structure behavior response performance, water loss resistance performance and temperature dependent performance (heat resistance) of the recycled high adhesion seal of Example 1 obtained in Production Example 1 / Cold resistance) was measured, and the results are shown in Table 1.

The adhesive strength is applied to the concrete surface in an amount of 1 kg / m ² of recycled high-adhesive seal, and after laminating the PE film on it, curing it at room temperature for a week, and then bonding the PE film at an angle of 90º and 100 mm / min. The strength at the time of peeling at a speed was measured and confirmed.

In addition, the test body prepared in the same manner was immersed in water at room temperature for 7 days, then taken out, dried at room temperature for 1 hour after removing the moisture on the surface, and the strength at the time of peeling in the same manner was measured.

Flexural resistance, by applying a recycled high-adhesion seal between PE films in a thickness of 1 mm, cured at room temperature for 7 days, the test piece was allowed to stand for about 2 hours at a temperature of -20 ° C, and then the test piece at an angle of 170º and It was bent at a speed of 100 mm / min, and it was confirmed by visually observing whether or not the residue on the surface of the recycled high adhesion seal and peeling between the recycled high adhesion seal and the PE film were visually observed. It was judged to be good if no residual or peeling occurred, and it was judged to be poor when either of them occurred.

Tensile strength, after applying calcium carbonate powder to remove the adhesive force on both sides of the recycled high-adhesive seal formed to a thickness of 1mm, using a tensile tester to tension under the conditions of a bite distance of 60mm and a tensile speed of 200mm / min, the test piece The strength at the time of breakage was measured and confirmed. At this time, the temperature was measured while changing to -20 ° C, 22 ° C, and 60 ° C to measure tensile strength at low, normal, and high temperatures.

Dimensional stability is prepared by recyclable high-adhesive seals with a size of about 200 × 150 × 1mm, cured for 7 days to prepare specimens, and then coated with calcium carbonate powder to remove adhesion on both sides, before and after heat treatment. After measuring the length, aged in a 50 ° C. oven for 24 hours and taken out of the oven, the lengths of the width and length were measured, and the shrinkage ratios for the width and length were calculated and confirmed before heat treatment.

The permeation resistance performance, wet surface adhesion performance, structure behavior response performance, water loss resistance performance and temperature dependence performance (heat / cold resistance) are tested by KS F 4935-08 (adhesive flexible rubber asphalt-based water leakage repair injection type sealing material) It was measured according to the method.

Test Items Example 1 Adhesion strength (N / mm) Normal 4.7 Immersion 4.3 Flex resistance Good Tensile strength (N / mm) (-20 ℃) 9.2 (22 ℃) 8.4 (60 ℃) 6.8 Dimensional stability (%) horizontal 2.3 Vertical 1.9 Permeability resistance performance Not pitched Wetting surface adhesion performance 60 seconds or more Structure behavior response performance Not pitched Water loss resistance performance (%) -0.02 Temperature dependent performance (heat resistance) Not pitched Temperature dependent performance (cold resistance) Not pitched

As shown in Table 1, it can be seen that the recycled high-adhesion seal of the present invention has excellent adhesive strength, flexural resistance, tensile strength and dimensional stability, and exhibits excellent physical properties even at low or high temperatures.

In addition, as a result of the water permeability resistance test, the water of the water permeable through the specimen of Example 1 was confirmed to be excellent in water resistance. As a result of the wet surface adhesion performance test, the adhesion was maintained for at least 60 seconds after being attached to the wet surface Since the adhesive strength was maintained for a longer time than the reference time of 60 seconds, it was confirmed that the wet surface adhesion performance was also excellent.

In addition, it was confirmed that the ability to respond to the structure's behavior and the waterproofing ability is maintained at high and low temperatures, and the rate of mass change in water is within -0.1%, which is the reference value, and the waterproofing performance in various environments is maintained.

[ Experimental Example  2]

Using the same method as the recycled high-adhesive seal of Example 1, manufactured by varying the amount of conkiolin added, and measuring the adhesive strength and tensile strength at room temperature and high temperature according to the change in the amount of conkiolin, and Table 2 shows the results. In Table 2, the content of conkiolin refers to the content (parts by weight) based on 100 parts by weight of the waste synthetic rubber sheet composition.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Conkiolin content (parts by weight) 5.0 1.2 7.7 - 0.7 8.3 Adhesion strength (N / mm) Normal 4.7 4.5 4.8 2.6 3.1 4.9 Immersion 4.3 4.0 4.5 1.5 1.9 4.6 Tensile strength (N / mm) (22 ℃) 8.4 8.5 8.1 8.7 8.3 6.5 (60 ℃) 6.8 7.1 6.5 7.4 7.3 4.1

Referring to the results of Table 2, Examples 1 to 3 and Comparative Example 3 show excellent adhesive strength in the general environment, and the adhesive strength after immersion is 0.3 to 0.5 N than the adhesive strength in the general environment. The adhesive strength is maintained even when immersed because it appears as low as / mm, whereas in Comparative Examples 1 and 2, the adhesive strength after immersion in general environment and after immersion is remarkably low, and the adhesive strength after immersion in general environment It was confirmed to appear lower than 1 N / mm compared to.

From these results, it was confirmed that the adhesive strength is improved when the content of conkiolin to 100 parts by weight of the waste synthetic rubber sheet composition is 1 part by weight or more, and high adhesive strength is maintained even in a wet environment as compared with the general environment.

In addition, in Comparative Example 3, unlike the other specimens, not only the tensile strength at both temperature conditions was low, but the tensile strength at high temperature was significantly lower than the tensile strength at room temperature, unlike other specimens.

From such a result, when the content of conkiolin is excessive, a decrease in tensile strength appears, and particularly, tensile strength at high temperature is markedly low, so conkiolin is contained in less than 8 parts by weight with respect to 100 parts by weight of the synthetic rubber sheet composition. It was confirmed that it is desirable to be.

[ Experimental Example  3]

A recycled high-adhesive seal was prepared using the same method as the recycled high-adhesive seal of Example 1, but was prepared by changing the content of the modifier, and the tensile strength and dimensional stability of each test piece were measured and the results are shown in Table 3. Did. In Table 3, the content of the modifier means a content (parts by weight) based on 100 parts by weight of the waste synthetic rubber sheet composition.

Test Items Example 1 Example 4 Comparative Example 4 Comparative Example 5 Comparative Example 6 Modifier content (parts by weight) Compound of Formula 1 3.00 4.70 - - 4.20 Compound of Formula 2 0.24 - - 1.60 0.55 Compound of Formula 3 0.36 - - 2.25 0.76 Sum 3.60 4.70 - 3.85 5.51 Tensile strength (N / mm) (-20 ℃) 9.2 9.0 8.6 8.7 8.7 (22 ℃) 8.4 8.1 6.8 7.5 8.0 (60 ℃) 6.8 6.5 5.0 5.8 5.0 Dimensional stability (%) horizontal 2.3 2.1 4.2 4.1 2.1 Vertical 1.9 1.7 3.3 3.5 1.5

Looking at the experimental results of Table 3, in the case of Comparative Example 4, which does not contain a modifier, tensile strength and dimensional stability are significantly reduced compared to Examples 1, 4, and 5 and 6 You can confirm that.

In addition, when Example 1 and Comparative Example 5, which does not include the compound of Formula 1 as a modifier, showed that Comparative Example 5 had lower tensile strength and dimensional stability, despite the higher total modifier content.

In addition, when comparing Example 1 and Comparative Example 6 containing all of the compounds of Formula 1 to Formula 3 as a modifier, when the total content of the modifier for 100 parts by weight of the synthetic rubber sheet composition exceeds 5 parts by weight, Despite the increase in the content of the compound of Formula 2 and the compound of Formula 3, which contributes to the improvement of strength, the tensile strength was found to decrease, and the rate of decrease in tensile strength at high temperature was remarkably high.

Looking at Example 1 and Example 4, when both the compositions of Formulas 1 to 3 are included as the modifier, the dimensional stability is similar even if the total amount of the modifier is decreased, and the tensile strength is rather improved.

Accordingly, it can be seen from the results of this experiment that when the total content of the modifier is contained in less than 5 parts by weight with respect to 100 parts by weight of the waste synthetic rubber sheet, the effect of improving tensile strength and dimensional stability can be seen. In the case of containing all of the compounds, it was confirmed that the physical properties of the recycled high-adhesion seal can be improved while reducing the amount of the modifier used.

[ Manufacturing example  2]

A polyester nonwoven fabric, which is the core material layer 120, is prepared, and the recycled high adhesive seal of Example 1 prepared in Production Example 1 is applied to one surface of the polyester nonwoven fabric to form the adhesive layer 110, and the other surface of the polyester nonwoven fabric. In order to form an asphalt layer 130 by applying an asphalt compound, a silica sand layer 140 was formed on the asphalt layer 130 to form a composite waterproof sheet. At this time, a mixture comprising 67% by weight of asphalt, 20% by weight of calcium carbonate, 8% by weight of SBS rubber, and 5% by weight of process oil was used as the asphalt compound.

[ Experimental Example  4]

Using the composite waterproof sheet prepared according to Preparation Example 2, tensile performance, temperature-dependent performance, bonding stability performance, and pitting performance based on KS F 4934 were measured, and the results are shown in Table 4.

Test Items standard Composite waterproof sheet Tensile performance Tensile strength (N / mm) 3.0 or higher 14.3 Elongation (%) More than 200 1226 High temperature resistance performance
(60 ℃) Tensile strength (N / mm) 2.0 or higher 9.7 Elongation (%) More than 150 312 Low temperature resistance performance
(-20 ℃) Tensile strength (N / mm) 5.0 or higher 21.8 Elongation (%) 50 or more 94 Bonding stability performance Hydrostatic performance Not to be pitched Not pitched Peel resistance performance (N / mm) 1.5 or more 1.5 Pitting performance Not to be pitched after 48 hours of standing Not pitched

When the results of the experiments in Table 4 were refined, the composite waterproof sheet 100 according to the embodiment of the present invention exhibited excellent tensile performance, excellent physical properties at high and low temperatures, and excellent waterproof performance.

From the above experimental results, the waterproof layer constructed according to the composite waterproof sheet 100 of the present invention and the waterproof construction method using the same, not only has excellent physical properties of the waterproof layer itself, but also has excellent waterproof performance, and maintains excellent performance even at low or high temperature environments. Was confirmed.

The present invention is not limited to the specific embodiments and descriptions described above, and various modifications can be carried out by anyone having ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. And such modifications are within the protection scope of the present invention.

100: composite waterproof sheet 110: adhesive layer
120: core layer 130: asphalt layer
140: silica layer 200: joint sheet
210: base layer 220, 230: joint adhesion layer
300: adhesion reinforcement layer 400: seam finish layer
500: deaeration layer

Claims (6)

An adhesive layer 110 including a recycled high adhesive seal;
A core material layer 120 disposed on the adhesive layer 110;
An asphalt layer 130 disposed on the center material layer 120; And
Including; a silica layer 140 disposed on the asphalt layer 130;
The recycled high-tack adhesive is 100 parts by weight of the waste synthetic rubber sheet composition, 2 to 15 parts by weight of process oil, 3 to 12 parts by weight of new rubber, 2 to 10 parts by weight of gum resin, 1 to 8 parts by weight of adhesion promoter and modifier 1 Characterized in that it comprises ~ 5 parts by weight, behavior-response composite waterproof sheet. delete According to claim 1,
The adhesion promoter, characterized in that the conkiolin, behavior-response composite waterproof sheet. According to claim 1,
The modifier, characterized in that it comprises a polymer resin represented by the formula (1), behavior-response composite waterproof sheet.
(Formula 1)

(In the formula (1), R1, R2 and R4 are ketones, R3 is an aromatic ring group (aryl group) containing an alkylsilyl group having 6 to 15 carbon atoms, R5 is an aromatic ring group (aryl group), n is 5 to 20 Integer) In the waterproof construction method using the composite waterproof sheet 100 for the behavior of any one of claims 1, 3 and 4,
A joint sheet attaching step of attaching the joint sheet 200 to an adhered surface of a region where joints between the plurality of composite waterproof sheets 100 are to be formed;
On the joint sheet 200, each composite waterproof sheet is spaced apart from each other by a predetermined distance to form a spaced portion A, so that the composite waterproof sheets 100 are adhered on the adhered surface and the joint sheet 200, the composite waterproof sheet Attachment step;
An adhesive reinforcement layer forming step of forming an adhesive reinforcement layer 300 by sealing the adhesive to the spaced portion A; And
Including the upper finishing step of forming a seam finishing layer 400 by applying silica sand on the adhesive reinforcing layer 300, including, waterproof construction method using a behavior-response composite waterproof sheet. The method of claim 5,
The joint sheet 200 includes a base layer 210 and a joint adhesive layer 220, 230 disposed on both sides of the base layer 210, a waterproof construction method using a composite waterproof sheet corresponding to behavior .

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