KR101902477B1 - Mdehtod of constructing multi-layers formed from asphalt material - Google Patents

Abstract

The present invention discloses a method for constructing an asphalt composite waterproofing layer.
A method of constructing an asphalt composite waterproofing layer according to the present invention comprises the steps of forming a primer layer by applying a priming primer to penetrate into the pores of concrete forming the bottom of a building to induce a hydration reaction in the concrete, A step S2 of forming a waterproof adhesive layer by coating a natural rubber or a synthetic rubber containing a waterproof platemember on the upper part, a step S3 of laminating a nonwoven fabric-filled modified asphalt waterproof sheet on the waterproof adhesive layer, And a step S4 of coating the asphalt mixture with the waterproof finish layer on the upper side. In this case, in order to improve the resistance to heat flow, low temperature and weatherability of the asphalt, All sections containing the ramp section, underground driveway, basement and rooftop and other leaking factors , And it has a water resistance to prevent the penetration of water in buildings, etc. as well as heat aging resistance, low temperature performance can be exhibited an excellent effect.

Description

[0001] The present invention relates to an asphalt composite waterproofing layer,

The present invention relates to a method of constructing an asphalt composite waterproofing layer, and more particularly, to a method of improving the resistance to heat flow, low temperature and weatherability of asphalt, The present invention relates to a method for constructing an asphalt composite waterproofing layer which is excellent in resistance against heat aging and low temperature performance as well as having a waterproof function for preventing penetration of water in all civil engineering works and buildings including a roof and other leaking factors.

Conventionally used waterproof materials include waterproofing sheets made by modifying asphalt, and reactive curing types such as emulsion type, urethane rubber type, and epoxy rubber type in which a coating film is formed due to evaporation of water such as rubber asphalt type, acrylic rubber type or acrylic resin type.

Of these conventional waterproofing materials, rubber asphalt is waterproofed by using rubber, resin or the like, which is made by modifying asphalt sheet waterproofing, synthetic rubber, vulcanizing agent, filler, etc., and dissolving in a solvent, , A water-soluble emulsion system in which a synthetic polymer emulsion is added after an asphalt emulsion reaction, and then a dry film is formed by evaporation of water.

The currently marketed modified asphalt coating waterproofing materials for the thermal treatment method are highly resistant to changes in physical properties such as low temperature and heat resistance during long-term heating at a high temperature (over 200 ° C.) in a melting furnace, so that the components entering into the inorganic filler are easily precipitated, It becomes difficult to do.

This may cause significant deterioration of properties such as shear performance and tensile adhesion which are important in the waterproofing of bridges. If used as a waterproofing material for road pavement or as a waterproofing material for modified asphalt sheets using road pavement, a high temperature asphalt pavement modified asphalt- Which may cause contamination on the upper surface of the packaging layer, resulting in poor workability in packaging and poor resistance to heat flow during installation of the high temperature ascon, which makes it difficult to form the same film thickness.

In addition, when the subsequent process after the waterproofing process is exposed to outdoor exposure for a long time due to rain or construction delay, changes in physical properties of the modified asphalt are difficult due to UV, ultraviolet rays, ozone, acid rain and heat.

In order to solve such a problem, an asphalt composition is disclosed in Korean Patent Laid-Open Publication No. 1995-0003393. The asphalt composition is a modified polyolefin metal composite which is a product of a modified polyolefin having a carboxyl group and / or a carboxyl group derivative and a transition metal compound, Has developed low temperature ductility and resistance to plastic deformation at high temperature and has been used as a binder for a packaging material or for roofing coating and waterproofing. However, this asphalt composition is a modified polyolefin metal which is a product of a modified polyolefin and a transition metal compound There has been a problem that resistance to heat flow resistance, low temperature and weather resistance are weak.

Therefore, the technical problem to be solved by the present invention is to improve the resistance to heat flow, low temperature, and weatherability of asphalt, and to improve the durability of the bridge, the underground parking lot top plate, the lamp section, the underground roadway, The present invention provides a method for constructing an asphalt complex waterproof layer which is excellent in heat resistant resistance and low temperature performance, as well as having a waterproof function for preventing penetration of water in all the civil engineering works and buildings contained therein.

In order to solve the above-described technical problem, the present invention provides a method for forming a primer layer, comprising the steps of: (1) forming a primer layer by applying a primer for penetrating a pore of concrete forming a floor of a building to induce hydration reaction in concrete; A step S2 of forming a waterproof adhesive layer by coating a natural rubber or a synthetic rubber containing a waterproof plate on the top of the waterproof adhesive layer, a step S3 of laminating a nonwoven fabric-filled modified asphalt waterproof sheet on the waterproof adhesive layer, And a step S4 of applying the asphalt mixture to the top of the sheet as a waterproof finish layer.

According to an embodiment of the present invention, the primer may include water, a penetration electrodeposition agent, a positive solvent, silane, and a water-soluble styrene acrylic resin.

According to another embodiment of the present invention, the waterproof plate material is prepared by agitating the inorganic filler and the asphalt at 150 to 250 ° C to ensure uniformity, raising the viscosity to 90 to 110 MU, adding the process oil and coal ash, And crushed to a plate size, and crushed to an average particle size of 0.1 to 0.5 mm.

According to another embodiment of the present invention, the mixture may further comprise adding tangled fibers.

According to another embodiment of the present invention, the asphalt mixture may be a mixture of thermoplastic elastomer and asphalt.

Therefore, according to the present invention, it is possible to improve the resistance to heat flow resistance, low temperature and weatherability of asphalt, and to provide a high-durability bridge, an underground parking lot top plate, a lamp section, an underground driveway, a basement, It has waterproof function to prevent penetration of water in civil engineering and building, and exhibits excellent resistance to heat aging and low temperature performance.

Hereinafter, the present invention will be described in detail.

It is noted that the technical terms used in the present invention are used only to describe specific embodiments and are not intended to limit the present invention.

In addition, the technical terms used in the present invention should be construed in a sense generally understood by a person having ordinary skill in the art to which the present invention belongs, unless otherwise defined in the present invention, Should not be construed to mean, or be interpreted in an excessively reduced sense.

In addition, when a technical term used in the present invention is an erroneous technical term that does not accurately express the concept of the present invention, it should be understood that technical terms that can be understood by a person skilled in the art are replaced with a technical term. And should not be construed as being excessively reduced in meaning, and the singular expressions used in the present invention include plural expressions unless the context clearly dictates otherwise. ≪ RTI ID = 0.0 > In the present invention, the terms such as "comprising" or "comprising" and the like should not be construed as encompassing various elements or various steps described in the invention, May not be included, or may include additional components or steps Should be interpreted as possible.

A method of constructing an asphalt composite waterproofing layer according to the present invention comprises the steps of forming a primer layer by applying a priming primer to penetrate into the pores of concrete forming the bottom of a building to induce a hydration reaction in the concrete, A step S2 of forming a waterproof adhesive layer by coating a natural rubber or a synthetic rubber containing a waterproof platemember on the upper part, a step S3 of laminating a nonwoven fabric-filled modified asphalt waterproof sheet on the waterproof adhesive layer, And applying the asphalt mixture as a waterproof finish layer to the upper portion.

First, in the step S1, the method of applying the asphalt complex waterproof layer is a process of forming a primer layer by applying a primer to induce hydration reaction in the concrete by penetrating into the pores of the concrete forming the bottom of the building.

The floor of the constructed building is held and the primer is applied by roller, brush or spray.

Such a primer may include water, an infiltration electrodeposition agent, a positive solvent, a silane, and a water-soluble styrene-acrylic resin. Such a primer layer penetrates deeply into the concrete to improve adhesion and has a typical acidity of about pH 10 to 11 It can be reacted with alkaline, and concrete hydration reaction can be induced at the place where the inner crystal collapses, so that the concrete floor of the concrete can be firmly adjusted.

The penetration electrodeposition agent may be a nonionic polyethylene oxide such as polyoxyethylene, polyoxyethylene triesterinated phenyl ether, polyoxypolyoxyethylene lauryl ether, polyoxyethylene tridecyl ether or polyoxyethylene lauryl amine, In this way, it is possible to restore the strength by inducing the hydration reaction of the carbonated concrete by penetrating the primer up to the inside where the carbonated portion of the concrete exists.

The positive solvent is not particularly limited, but alcohols such as ethyl alcohol, butyl alcohol, isopropyl alcohol or propyl alcohol can be used.

The silane may be selected from methyltrimethoxysilane, aminopropyltriethoxysilane or phenyltrimethoxysilane.

The primer may be added with various additives in a range that does not impair the properties of the primer, and commonly used components such as a defoaming agent, a thickener, an anti-settling agent, a flow inhibitor, Of course.

Next, in step S2, a waterproof adhesive layer is formed by coating a natural rubber or a synthetic rubber containing a waterproof plate on the top of the primer layer. By this process, the waterproof performance is improved and elasticity is imparted to the film surface Even if cracks or deterioration occur on the concrete floor, the waterproof layer can maintain the adhesive force and ensure waterproof performance.

The natural rubber or synthetic rubber used herein is not particularly limited and may be various natural rubber, butyl rubber, styrene butadiene rubber, acrylic rubber, hyparone rubber, geocor rubber, epichlorohydrin rubber, silicone rubber or fluorine The rubber may be used alone or in combination.

The waterproof plate is uniformly mixed with the rubber to form a waterproof adhesive layer, and the waterproof plate is crushed to an average particle size of 0.1 to 0.5 mm. If it is less than 0.1 mm, the effect of prolonging the movement path of the water may be reduced because the proportion of the particles is not large. On the other hand, when the thickness is more than 0.5 mm, it may be helpful to extend the water movement path, but it may protrude to the surface of the coating film when the coating film is formed, which may deteriorate the appearance quality.

Since the waterproof plate material should be pressed to form a plate, it is important to control the viscosity. It is preferable that the inorganic filler and the asphalt are stirred at 150 to 250 ° C to ensure uniformity, MU < / RTI > starting viscosity.

The asphalt is preferably an emulsified asphalt which is easily mixed with an inorganic filler such as silicon dioxide (SiO ₂ ), calcium carbonate (CaCO ₃ ), aluminum oxide (Al ₂ O ₃ ) or iron oxide (Fe ₂ O ₃ ) And the mixture is mixed with an emulsifier to have a viscosity of 90 to 110 MU at a reference temperature of 100 캜. The average particle size of the asphalt is adjusted to 5 to 15 탆 to ensure compatibility with an average particle size of 10 탆 of the inorganic filler , MU is a viscosity coefficient of 10 ^-3 Ns / m ² , N is Newton, s is seconds, and m is meters.

The asphalt and the inorganic filler are agitated at 150 to 250 ° C. If it is less than 150 ° C, the ester group is not only generated in the emulsified asphalt but also the reaction with the inorganic filler functional group may be difficult to occur. The reaction of the paraffin oil with the entangled fiber may occur rapidly and the subsequent process may be difficult.

When the mixture of the asphalt and the inorganic filler reaches 90 to 110 MU, the process oil and coal ash are added and stirred to obtain a viscosity of 135 to 165 MU. In this process, water content in the emulsified asphalt is evaporated, And then the radicals of the unsaturated asphalt are generated, so that the chemical reaction can proceed between the asphalt, the coal ash, and the inorganic filler.

In addition, paraffin oil can be used as the process oil used for increasing the mixing dispersibility and maintaining the temperature.

Further, the mixture may further comprise a step of adding a tangled fiber, which tangentially twists between the particles in the sheet body to provide a tangling effect of grabbing the particles, It is possible to use a polymer material which is insoluble by the heat to be dropped and can be used as a polymer material such as polyethylene terephthalate, polyester, polypropylene, polystyrene, polycarbonate, polyetheretherketone, polyamide, polyimide, polyvinyl chloride, polyacrylonitrile, styrene Acrylonitrile butadiene styrene, polymethyl methacrylate, polytetrafluoroethylene, polychlorotrifluoroethylene, polyethylene, urea resin, phenol resin, melamine resin, acrylic resin, nylon resin, aramid resin, silicone Resin, amino resin or Untreated water can jiil.

The tangent fiber preferably has a length of 1 mm to 5 mm. If the tangent fiber is less than 1 mm, the fiber itself may become tangled and the particle cohesive force may be difficult to secure. Conversely, if it exceeds 5 mm, It may be difficult to granulate.

As such a tangent fiber, aramid, polypropylene, polyethylene or the like having heat resistance and tensile strength may be used as the polymer material. The diameter of the tangent fiber may be 5 to 10 탆. If it is below the lower limit value, The endothelial property and the cold resistance may deteriorate. On the contrary, if the upper limit is exceeded, the physical adhesion area with the matrix of the short fibers may decrease and the reinforcement may decrease.

In order to adjust the viscosity, carbon black and silica may be added. In this case, when the viscosity reaches 300 MU, the reaction is stopped. After the reaction is stopped, the viscosity tends to decrease by itself. If the viscosity is 300 If the reaction is conducted in excess of MU, radical bonding may be lost due to radical formation, and the effect of the air tightness filler may be reduced.

And then compressed in a compression mold to form a plate. The plate is dried for 24 hours or more before molding, and pressed at a high pressure of 100 bar or more to prepare a plate having a thickness of 20 to 50 탆. The plate is crushed with an average particle size of 0.1 to 0.5 mm with a crusher .

The average particle size of the platelet can be classified into the longest average particle size of the particles classified upon filtration.

Next, step S3 is a step of laminating a nonwoven fabric-modified asphalt waterproof sheet on the waterproof adhesive layer. The nonwoven fabric may be a unexposed single-layer waterproofing waterproof sheet impregnated with asphalt, using polyester as a material.

Such a waterproof sheet is intended to maintain the waterproof performance of the waterproof adhesive layer for a long time and to increase the adhesive strength.

Such asphalt may be a mixture of styrene thermosetting elastomer and asphalt, which may be polystyrene, polyolefin, polyurethane, polyester or vinyl chloride.

Next, in step S4, the asphalt mixture is coated with the waterproof finish layer on the nonwoven fabric-modified asphalt waterproof sheet, and the weatherproof property of the entire concrete bottom waterproof layer is secured from the outside of the waterproof adhesive layer and the waterproof sheet .

The asphalt may be a mixture of the styrene thermosetting elastomer and the asphalt. The thermoplastic elastomer may be a polystyrene type, a polyolefin type, a polyurethane type, a polyester type or a vinyl chloride type.

Example

Water, a polyoxyethylene, an ethyl alcohol, a methyltrimethoxysilane, and a water-soluble styrene acrylic resin was coated with a roller to form a primer layer. Next, after the primer layer was dried, asphalt and silicon dioxide were mixed, and the mixture was stirred at a temperature of 180 ° C to 100 MPa, and paraffin process oil, coal ash and aramid tangent fibers (average diameter 8 μm, average length 2 mm) And carbon black was gradually added thereto. The mixture was squeezed at a room temperature with a viscosity of 300 MPa, pulverized by a crusher, and a plate-like body powder having a class average particle size of 200 μm and styrene-butadiene synthetic rubber were mixed to form a waterproof adhesive layer. Next, after the waterproof adhesive layer was sufficiently dried, the emulsified asphalt and the styrene-based thermoplastic elastomer were stirred at 160 DEG C for about 2 hours, stirred to grow an average particle size of about 10 mu m, covered with a waterproof sheet impregnated with a polyester nonwoven fabric, After the drying and stabilization, the emulsified asphalt and the styrene-based thermoplastic elastomer were stirred at 160 ° C for about 2 hours to apply an asphalt mixture stirred to an average particle size of about 10 μm to form a waterproof finish layer. The waterproof layer was constructed.

Experimental Example

In order to confirm the performance of the asphalt composite waterproof layer constructed above, an experiment according to the related standard KS F 3211 was performed and the results are shown in the table below.

Referring to the above table, it can be seen that the asphalt complex waterproof layer according to the present invention has durability that can maintain waterproof performance for a long time, has excellent tensile / tearing property, and exhibits deteriorated property effectively .

Claims (5)

An S1 step of forming a primer layer by applying a ground adjusting primer that penetrates into the pores of concrete forming the bottom of the building to induce a hydration reaction in the concrete;
A step S2 of forming a waterproof adhesive layer by coating natural rubber or synthetic rubber containing a waterproofing plate on the top of the primer layer;
A step S3 of laminating a non-woven fabric-embeded asphalt waterproof sheet on the waterproof adhesive layer; And
And applying the asphalt mixture to the top of the nonwoven fabric-modified asphalt waterproof sheet with a waterproof finish layer,
The waterproof plate material was stirred at 150 to 250 ° C to assure uniformity of the inorganic filler and asphalt to raise the viscosity to 90 to 110 MU and to add process oil and coal ash, To 0.5 mm in average particle size of the asphalt composite waterproof layer.
The method according to claim 1,
Wherein the primer comprises water, a penetration electrodeposition agent, a positive solvent, a silane, and a water-soluble styrene-acrylic resin.
delete delete The method according to claim 1,
Wherein the asphalt mixture is a mixture of a thermoplastic elastomer and an asphalt.