KR102438324B1 - A waterproofing construction method for bridge surfaces using nano ceramic metal powder with improved adhesion - Google Patents

Abstract

The present invention relates to a waterproofing construction method for bridge surfaces using nano ceramic metal powder with improved adhesion, which uses an asphalt-based material and a glass fiber mesh to waterproof bridge surfaces when bridge surface pavement is performed with asphalt on the top plate of a concrete bridge and, more specifically, to a waterproofing construction method for bridge surfaces using nano ceramic metal powder with improved adhesion. In forming a waterproof layer between the top plate of a concrete bridge deck and an asphalt layer, the waterproofing construction method can obtain imperviousness, increase adhesion, absorb tension due to contraction and expansion, absorb the shear strength acting on the asphalt layer, can prevent cracking of the asphalt layer by removing the pressure of excess water vapor generated from the top plate of the bridge deck, increase workability, prevent formation of bubbles and reaction failures, and shorten the construction period by performing subsequent work immediately after laying the waterproof layer. The method comprises: a construction surface processing step (S10); an adhesion enhancement step (S20); a first waterproofing step (S30) of laying a glass fiber mesh (30) on a primer (20); a second waterproofing step (S40) of heating and laying an asphalt composition (40) on the primer (20); a construction surface strengthening step (S50) of laying a concrete reinforcing agent (50) on the asphalt composition (40); and a pavement step (S60) of laying an asphalt mixture (60).

Description

A waterproofing construction method for bridge surfaces using nano ceramic metal powder with improved adhesion}

The present invention relates to a bridge surface waterproofing construction method using an asphalt-based material for waterproofing the bridge surface when performing the bridge pavement construction with asphalt on the upper plate of the concrete bridge and the adhesion-reinforced surface-modified nano-ceramic metal powder using a glass fiber mesh. In detail, in forming a waterproofing layer between the concrete bridge top plate and the asphalt layer, it has impermeability, has excellent adhesion, absorbs tension due to contraction and expansion, and can absorb shear strength acting on the asphalt layer, and It can prevent cracks in the asphalt layer by removing the pressure of excess water vapor that is generated, and has excellent workability, no bubble formation and poor reaction. It is a technical field related to a waterproofing construction method for bridge surfaces using nano-ceramic metal powder with surface-modified adhesion enhancement.

In addition, the present invention includes a self-healing composition in the primer layer formed between the bridge top plate and the waterproofing layer to improve resistance to microcracks and micro-scratch damage, and strengthen the adhesion of the bridge top plate and the asphalt layer formed by the asphalt composition It is a technical field related to a waterproofing construction method for bridge surfaces using surface-modified nano-ceramic metal powder with adhesion-enhancement excellent in weather resistance, water resistance, abrasion resistance and chemical resistance.

In general, as the common age of bridges of concrete bridges or structures increases, the amount of penetration of rainwater or snow removal materials increases and the load applied to the bridges accumulates, so the bonding strength between materials decreases and cracks occur due to changes in the volume of water due to temperature changes. easy.

For bridge surfaces of concrete bridges or structures, as the number of years of use increases, the amount of rainwater or snow removal material infiltration increases, and the load applied to the bridge surface accumulates.

Therefore, a waterproofing agent is applied to a concrete bridge or bridge surface of a structure in order to prevent rainwater or snow removal materials from penetrating and reducing the strength and lifespan of the concrete structure. By applying a waterproofing agent to the bridge surface of such a concrete structure, it is possible to prevent deterioration of the concrete floor plate and corrosion of rebar due to water and chloride penetrating from the pavement layer.

Unlike waterproofing materials applied to construction and other fields, bridge surface waterproofing agents are used for bridges where mechanical actions such as repeated loads, vibrations, shocks, and shearing by driving vehicles and contraction and expansion due to temperature changes are complicated. is easy to damage, and it takes a lot of money to repair or reinforce the waterproofing layer on the damaged bridge, and there is a problem in that it causes traffic delays by partially controlling the lanes during construction.

These bridge surface waterproofing agents use a mixture of two or more raw materials such as asphalt, synthetic rubber, synthetic resin, fibers, minerals and volatile solvents, and those used as waterproofing layers for bridge surfaces can be divided into penetration, sheet, coating, and pavement systems. have.

Penetration-based waterproofing agent penetrates along the micropores on the surface of the concrete bridge surface to form a primary water film, while it is combined and diffused with the silicon (Si) component in concrete through continuous chemical action to form a water film with an almost uniform depth. It serves to protect concrete from damage caused by moisture and salt. It was mainly used in the past, but it is hardly applied now because of its poor waterproofing performance compared to coating-based, sheet-based, and packaging-based waterproofing agents.

The sheet-based waterproofing agent has the advantage of excellent waterproofing effect and good adhesion to the pavement layer. However, there are disadvantages in that repair work is difficult and the adhesion to the bridge deck is insufficient. However, the shortcomings of sheet-based waterproofing agents have recently been supplemented by new methods of reinforcing glass fibers in the sheet system to improve strength and adhesion.

As a pavement waterproofing agent, goose asphalt is generally used, and mastic asphalt is sometimes used in England and Europe, and is mainly applied to steel floor boards, and has the advantage of obtaining effective waterproofing for the joint part of the floor board.

The coating-based waterproofing agent has the advantage that it can be easily applied during repair work, and has excellent waterproofing effect because of its excellent adhesion to the bridge deck. However, there is a disadvantage in that the adhesive strength with the packaging layer is insufficient. To solve this problem, the coating-based waterproofing agent improves the adhesion strength with the asphalt layer by spraying silica sand on the waterproofing layer, and it can be classified into a synthetic rubber coating system, an asphalt coating system, and an epoxy resin coating system. Among them, the epoxy resin coating-based waterproofing agent has excellent adhesion to concrete, but there is a problem in that the asphalt mixture must be installed within the pot life of the resin in order to secure adhesion to the asphalt pavement.

On the other hand, as a waterproofing method applied to a concrete bridge, there are a penetration type waterproofing method, a sheet type waterproofing method, and a coating type waterproofing method. The penetration-type waterproofing method has been widely used for economic reasons and is very simple to apply, but the waterproofing agent does not penetrate sufficiently into the high-strength concrete bridge surface, so waterproofing performance cannot be expected. In the case of a country with four seasons, there is a problem that it does not show a great effect in improving the waterproofing performance of concrete bridges.

Therefore, in recent years, a coating-type waterproofing method in which a synthetic resin material is applied to form a waterproofing film for construction is preferred.

Looking at an example of applying the coating-type waterproofing method, in Korean Patent Registration No. 10-0367524, an epoxy primer layer is applied to the surface of a bridge, etc. A bridge waterproofing method is disclosed.

However, since the polymer resin layer applied to the bridge waterproofing method disclosed in the above publication is quick-drying and hardens within 5 seconds, each layer is separated or cracked even before the asphalt concrete, asphalt and epoxy primer layers are mutually fused. cannot be expected In addition, various treatment layers such as a quick-drying and slow-drying polymer resin layer and a fine stone aggregate layer should be formed on the primer layer. , there is a problem in that it cannot be actually constructed or the waterproof effect is lowered even if the construction is done.

In order to compensate for this multi-layer problem, in Korean Patent Laid-Open No. 10-2002-76214, a polyurethane resin primer layer is applied on the surface of a bridge, etc., and a quick-drying polymer resin layer is formed thereon, and an excess of isocyanate is applied thereon. Disclosed is a treatment method in which an asphalt adhesive layer and an asphalt concrete layer are sequentially laminated after applying the added polyurethane production mixture.

However, this method has the disadvantage that the excessive amount of isocyanate present in the polyurethane manufacturing mixture layer reacts with the surrounding moisture and the bonding strength is rather weak. Another problem arises that requires

Republic of Korea Patent Registration No. 10-0367524 (December 26, 2002) Republic of Korea Patent Publication No. 10-2002-0076214 (October 9, 2002)

The present invention is a technology devised to solve the problems according to the above-mentioned prior art, and it blocks voids in the bridge top plate made of concrete and strengthens the adhesion by providing water resistance. It has improved tensile strength so that it has strong resistance to corrosion and durability according to the contraction and expansion of the bridge deck, while alleviating external shocks and having a waterproof anticorrosive function. , It is the main object to provide a waterproofing construction method using the surface-modified nano-ceramic metal powder with excellent adhesion and abrasion resistance and chemical resistance.

The present invention is a construction method for waterproofing a new concrete bridge top plate 10 that has been cured or an old concrete bridge top plate 10 treated with polymer concrete and Linax in order to realize the desired purpose as described above. , a construction surface treatment step (S10) of treating the base surface by removing foreign substances such as dust, oil, and latency of the bridge top plate 10; and adhesion of applying a primer 20 to the surface of the bridge top plate 10 Reinforcement treatment step (S20); and a first waterproofing treatment step (S30) of laying the glass fiber mesh 30 on top of the primer 20; and the primer 20 on which the glass fiber mesh 30 is installed. A second waterproofing treatment step (S40) of heating and installing the asphalt composition 40 on the upper portion of the step (S50); and a paving step (S60) of installing the asphalt mixture 60; and the asphalt composition 40 is asphalt, cycloariphatic epoxy resin, polyhydroxyaminoether, reactive diluent, adhesion activator, filler , a surface-modified nano-ceramic metal powder, 4-hydroxyphenylamine, and an alcohol for viscosity control are presented.

In addition, the primer 20 of the present invention is characterized in that it comprises an ester-modified bisphenol F-type epoxy resin, polyethylene terephthalate, phenyltrimethoxysilane, 4-hydroxyphenylamine, and an antifoaming agent.

In addition, the primer 20 of the present invention comprises a thermoplastic polyurethane-based resin, a microcapsule (A) having a silicone compound containing a vinyl group as a core, a microcapsule (B) having a silicone compound containing a hydride group as a core, and a metal catalyst. It is characterized in that it comprises a self-healing composition comprising.

In addition, the primer 20 of the present invention contains 50 to 70 parts by weight of an ester-modified bisphenol F-type epoxy resin; and 5 to 15 parts by weight of polyethylene terephthalate; and 10 to 40 parts by weight of phenyltrimethoxysilane; and 4-hydride. 10 to 20 parts by weight of oxyphenylamine; and 0.1 to 0.3 parts by weight of an antifoaming agent; and 4 to 8 parts by weight of the self-healing composition.

In addition, the self-healing composition of the present invention, with respect to 100 parts by weight of the thermoplastic polyurethane-based resin, microcapsules (A) 1 to 20 parts by weight; and microcapsules (B) 1 to 20 parts by weight; and 0.0001 to 0.5 parts by weight of a metal-based catalyst, and the content ratio of the microcapsules (A) and the microcapsules (B) is that the microcapsules (A)/microcapsules (B) are 0.5-2 And, the average particle diameter of the microcapsules (A) and the microcapsules (B) is characterized in that 0.01 ~ 100㎛.

In addition, the asphalt composition 40 of the present invention is based on 100 parts by weight of asphalt, 10 to 30 parts by weight of a cycloaliphatic epoxy resin; and 5 to 10 parts by weight of polyhydroxyaminoether; and 3 to 12.5 parts by weight of a reactive diluent. and 0.1 to 0.5 parts by weight of an adhesive activator; 1.5 to 3 parts by weight of a filler; 20 to 60 parts by weight of a surface-modified nano-ceramic metal powder; and 10 to 20 parts by weight of 4-hydroxyphenylamine; and 1 to 5 parts by weight of alcohol for viscosity control.

In addition, the cycloaliphatic epoxy resin of the present invention is hexahydrophthalic acid diglycidyl ester, 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate, 4-glycidyloxy-N , It is composed of any one of N-diglycidyl amine, and the filler is characterized in that it is composed of any one or more of mica, talc, calcium carbonate, and wood flour.

In addition, the surface-modified nano-ceramic metal powder of the present invention is dissolved in 10 to 30 parts by weight of stearic acid in 40 to 80 parts by weight of a polar solvent of acetone, ethyl acetate, or methyl ethyl ketone in a reactor equipped with a thermometer and a stirrer. Then, 3-(triethoxysily) propyl isocyanate or 3 (trimethoxysilly) propyl isocyanate, 5-20 parts by weight of difunctional reactive silane and tin (II) 2-ethylhexanonate condensation catalyst 0.0. Add 1 to 0.1 parts by weight and react at 30 to 60° C. at a speed of 100 to 200 rpm for 1 to 2 hours, and 20 to 40 μm in size of zinc oxide, talc, clay, lipid sugar, and calcium carbonate. 10 to 100 parts by weight is added and reacted at 30 to 60° C. at a speed of 100 to 200 rpm for 1 to 4 hours, followed by filtration and drying.

The bridge surface waterproofing construction method using the surface-modified nano-ceramic metal powder according to the present invention presented as described above uses the surface-modified ceramic metal to form a dense coating film with a curable resin with improved water and corrosion resistance, so a bridge made of concrete It can be applied to the top plate to give high water permeability and high water resistance and corrosion resistance to chemical environments.

In addition, the present invention provides a primary waterproofing anticorrosive effect by the primer layer, strong resistance to peeling due to strong adhesion between polyethylene terephthalate contained in the primer layer and polyhydroxyamino ether contained in the asphalt composition, and excellent tensile strength. In addition to obtaining strength, it can withstand fracture due to contraction and expansion of the concrete layer together with the elastic force of the modified polyurea contained in the primer layer, as well as vibration and external shock due to the self-healing composition included in the primer layer. Strong durability can be obtained by improving resistance to microcracks and microscopic scratch damage.

1 is a flow chart showing a waterproofing construction method using a nano-ceramic metal powder surface-modified adhesion reinforcement according to a preferred embodiment of the present invention.
Figure 2 is a cross-sectional perspective view showing a bridge surface waterproofing construction method using the adhesion-reinforced surface-modified nano-ceramic metal powder according to a preferred embodiment of the present invention.
3 is a cross-sectional view showing a bridge waterproofing construction method using a nano-ceramic metal powder having an adhesion-enhancing surface modification according to a preferred embodiment of the present invention.

The present invention relates to a waterproofing construction method for a bridge using an adhesive-reinforced surface-modified nano-ceramic metal powder using a goose asphalt-based material and a glass fiber mesh for waterproofing a bridge when performing a bridge paving construction with asphalt on the upper plate of a concrete bridge. More specifically, in forming a waterproofing layer between the concrete bridge top plate 10 and the asphalt layer formed by the asphalt composition 40, it has impermeability, has excellent adhesion, absorbs tension due to contraction and expansion, and absorbs the asphalt composition ( 40) and the asphalt mixture 60 can absorb the shear strength acting on the asphalt layer, and remove the pressure of excess water vapor generated from the bridge top plate 10 to prevent cracking of the asphalt layer and improve workability. It is a technology related to a waterproofing construction method for a bridge using an adhesion-reinforced surface-modified nano-ceramic metal powder that is excellent, has no bubble formation and reaction failure, and can shorten the construction period by enabling subsequent work to be carried out immediately after installation of the waterproofing layer.

In addition, the present invention includes a self-healing composition in the primer layer formed between the bridge top plate 10 and the waterproofing layer to improve resistance to microcracks and microscratch damage, to alleviate external shocks, and to have a waterproofing function. , reinforces the adhesion of the asphalt layer formed by the bridge top plate 10 and the asphalt composition 40, while resisting erosion by snow-removing agents, etc. It is a technology related to the construction method of waterproofing of the bridge using

The configuration for achieving the present invention as described above is a construction method for waterproofing a new concrete bridge top plate 10 that has been cured or an old concrete bridge deck plate 10 treated with polymer concrete and Linax, the bridge A construction surface treatment step (S10) of treating the base surface by removing foreign substances such as dust, oil, and latency of the upper plate 10; and adhesion reinforcement treatment of applying a primer 20 to the surface of the bridge upper plate 10 Step (S20); and a first waterproofing treatment step (S30) of laying the glass fiber mesh 30 on the upper part of the primer 20; and the upper part of the primer 20 after the glass fiber mesh 30 is installed A second waterproofing treatment step (S40) of heating and installing the asphalt composition 40 to the construction surface strengthening treatment step (S40) of installing the concrete reinforcement 50 containing garnet or silica sand on the asphalt composition 40 ( S50); and a paving step (S60) of installing the asphalt mixture 60; and the asphalt composition 40 is asphalt, cycloariphatic epoxy resin, polyhydroxyaminoether, reactive diluent, adhesion activator, filler , characterized in that it is composed of surface-modified nano-ceramic metal powder, 4-hydroxyphenylamine, and alcohol for viscosity control.

In addition, the primer 20 of the present invention is characterized in that it comprises an ester-modified bisphenol F-type epoxy resin, polyethylene terephthalate, phenyltrimethoxysilane, 4-hydroxyphenylamine, and an antifoaming agent.

In addition, the primer 20 of the present invention comprises a thermoplastic polyurethane-based resin, a microcapsule (A) having a silicone compound containing a vinyl group as a core, a microcapsule (B) having a silicone compound containing a hydride group as a core, and a metal catalyst. It is characterized in that it comprises a self-healing composition comprising.

In addition, the primer 20 of the present invention contains 50 to 70 parts by weight of an ester-modified bisphenol F-type epoxy resin; and 5 to 15 parts by weight of polyethylene terephthalate; and 10 to 40 parts by weight of phenyltrimethoxysilane; and 4-hydride. 10 to 20 parts by weight of oxyphenylamine; and 0.1 to 0.3 parts by weight of an antifoaming agent; and 4 to 8 parts by weight of the self-healing composition.

In addition, the self-healing composition of the present invention, with respect to 100 parts by weight of the thermoplastic polyurethane-based resin, microcapsules (A) 1 to 20 parts by weight; and microcapsules (B) 1 to 20 parts by weight; and 0.0001 to 0.5 parts by weight of a metal-based catalyst, and the content ratio of the microcapsules (A) and the microcapsules (B) is that the microcapsules (A)/microcapsules (B) are 0.5-2 And, the average particle diameter of the microcapsules (A) and the microcapsules (B) is characterized in that 0.01 ~ 100㎛.

In addition, the asphalt composition 40 of the present invention is based on 100 parts by weight of asphalt, 10 to 30 parts by weight of a cycloaliphatic epoxy resin; and 5 to 10 parts by weight of polyhydroxyaminoether; and 3 to 12.5 parts by weight of a reactive diluent. and 0.1 to 0.5 parts by weight of an adhesive activator; 1.5 to 3 parts by weight of a filler; 20 to 60 parts by weight of a surface-modified nano-ceramic metal powder; and 10 to 20 parts by weight of 4-hydroxyphenylamine; and 1 to 5 parts by weight of alcohol for viscosity control.

In addition, the cycloaliphatic epoxy resin of the present invention is hexahydrophthalic acid diglycidyl ester, 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate, 4-glycidyloxy-N , It is composed of any one of N-diglycidyl amine, and the filler is characterized in that it is composed of any one or more of mica, talc, calcium carbonate, and wood flour.

In addition, the surface-modified nano-ceramic metal powder of the present invention is dissolved in 10 to 30 parts by weight of stearic acid in 40 to 80 parts by weight of a polar solvent of acetone, ethyl acetate, or methyl ethyl ketone in a reactor equipped with a thermometer and a stirrer. Then, 3-(triethoxysily) propyl isocyanate or 3 (trimethoxysilly) propyl isocyanate, 5-20 parts by weight of difunctional reactive silane and tin (II) 2-ethylhexanonate condensation catalyst 0.0. Add 1 to 0.1 parts by weight and react at 30 to 60° C. at a speed of 100 to 200 rpm for 1 to 2 hours, and 20 to 40 μm in size of zinc oxide, talc, clay, lipid sugar, and calcium carbonate. 10 to 100 parts by weight is added and reacted at 30 to 60° C. at a speed of 100 to 200 rpm for 1 to 4 hours, followed by filtration and drying.

Hereinafter, a preferred embodiment of the method for waterproofing a bridge using the adhesion-reinforced surface-modified nano-ceramic metal powder of the present invention will be described.

First, the construction surface treatment step (S10) of the present invention is to treat the base surface by removing foreign substances such as dust, oil, and latency of the bridge top plate 10, and the new concrete bridge top plate 10 or re By removing foreign substances from the aged concrete bridge top plate 10 treated with Linax and making it flat, the primer 20 applied in the following adhesion reinforcement treatment step (S20) is closely and stably on the surface of the bridge top plate 10 Remove foreign substances or pre-applied paint so that it can adhere to It is to arrange the surface of the bridge top plate 10 so as to form a filling layer (not shown) by filling it.

In addition, the construction surface treatment step (S10) of the present invention can be finished by injecting a filler such as a sealing agent after V-cutting and polishing to the crack area of a certain size or more leaking to the bridge top plate 10, and the aged surface and the raised area can be finished to be flat as the existing floor so that there are no seams and bends. However, the filler such as the sealing agent is preferably injected when cracks are relatively large so that the primer 20 to be described later can sufficiently penetrate into the bridge top plate 10 .

Next, the adhesion reinforcement treatment step (S20) of the present invention is to form a primer layer by coating the primer 20 on the surface of the bridge top plate 10, using a roller or a brush, etc. in an amount of 0.3 kg/m It is applied evenly, and if modified polyurea to be described later is included, it is preferable to apply using a spray, and form a close bond with the asphalt composition 40 to be described in detail later.

Specifically, the primer 20 is composed of an ester-modified bisphenol F-type epoxy resin, polyethylene terephthalate, phenyltrimethoxysilane, 4-hydroxyphenylamine, and an antifoaming agent, and more specifically, an ester-modified bisphenol F-type epoxy resin. 50 to 70 parts by weight of an epoxy resin, 5 to 15 parts by weight of polyethylene terephthalate, 10 to 40 parts by weight of phenyltrimethoxysilane, 10 to 20 parts by weight of 4-hydroxyphenylamine, and 0.1 to 0.3 parts by weight of an antifoaming agent. .

In addition, in the adhesion reinforcement treatment step (S20) of the present invention, it is preferable to allow about 60 minutes or more to elapse after forming the primer layer by applying the primer 20 as described above, and a glass fiber mesh to be described in detail later. (30) is preferably installed before the primer 20 is cured, that is, before about 60 minutes have elapsed so that it is adhered to the primer 20.

That is, the primer 20 fills the gap of the crack formed in the bridge top plate 10 to make the base surface even more flat, and to improve adhesion with the asphalt composition 40 and resistance to peeling, which will be described in detail later. and realize the effect of having durability and water resistance.

Unlike ester-modified bisphenol A-type epoxy resin containing environmental hormones, ester-modified bisphenol F-type epoxy resin is an environmentally friendly epoxy composition. Performance and adhesiveness are low, and when it exceeds 70 parts by weight, there is a problem of slow curing after application due to the characteristic of low viscosity.

The phenyltrimethoxy silane serves to strengthen the adhesion to the primer 20 and the bridge top plate 10 and prevent the lifting phenomenon, and the 4-hydroxyphenylamine is a curing agent. It is preferable to be included in the same amount as above in order to play a role and obtain an efficient effect.

The polyethylene terephthalate (PET) is an asphalt layer formed by the asphalt composition 40 by polyhydroxy aminoether (PHAE) included in the asphalt composition 40, which will be described in detail later, as the primer. (20) and strong adhesion and strong resistance to peeling.

The antifoaming agent serves to maintain the stability of the liquid phase by reducing the surface tension of the liquid phase, and suppresses the occurrence of bubbles when the main material and the hardening material are stirred. At this time, if the content of the antifoaming agent is less than 0.1 parts by weight, the effective effect is insignificant, and even if it exceeds 0.3 parts by weight, the effect of the antifoaming agent is not significantly changed.

In addition, the primer 20 may be configured to further include a modified polyurea. When the modified polyurea is included in the primer 20, after about 15 to 30 minutes or more has elapsed due to the fast curing characteristics, the asphalt It will be apparent that the composition 40 can be applied thereon, and the glass fiber mesh 30 is installed before the elapse of about 15 to 30 minutes or more.

That is, the primer 20 may be configured to further include 10 to 15 parts by weight of a modified polyurea, and the modified polyurea is produced by a chain reaction of an isocyanate prepolymer and a polyetheramine, and a gel time of 10 to 20 (seconds). ) to have excellent workability, and to improve performance such as durability, elasticity and adhesion strength of the primer layer formed by the primer 20 . When the amount of the modified polyurea is less than 10 parts by weight, smooth elasticity and adhesion strength effects cannot be expected, and when it exceeds 15 parts by weight, the performance improvement effect is the same, but it is not economical due to the additional material cost. it is preferable

In this case, the primer 20 is preferably applied using a spray when the modified polyurea is further included.

In addition, the primer 20 may be configured to further include 1 to 5 parts by weight of zeolite. The zeolite is a porous material and has absorption and adsorption power, thereby improving adhesion between materials, and in the case of less than 1 part by weight, The adhesive effect is insignificant, and when it exceeds 5 parts by weight, the adhesive effect is the same, but it is not economical to add material cost, so it is preferable to include it in the same amount as above.

In addition, the primer 20 is configured to include a self-healing composition. The self-healing composition is a primer when cracks or scratches occur in the primer layer due to cracks in the bridge top plate 10 and when cracks or scratches occur due to continuous external impact. Allows the layer to self-heal to improve the durability of the primer layer.

The self-healing composition is composed of a thermoplastic polyurethane-based resin, a microcapsule having a silicone compound containing a vinyl group as a core (A), a microcapsule having a silicone compound containing a hydride group as a core (B), and a metal catalyst. Specifically, with respect to 100 parts by weight of the thermoplastic polyurethane resin, the microcapsules (A) 1 to 20 parts by weight and the microcapsules (B) 1 to 20 parts by weight and 0.0001 to 0.5 parts by weight of the metal catalyst are included, and the microcapsules (A) and the content ratio of the microcapsules (B) microcapsules (A)/microcapsules (B) are 0.5-2, and the average particle diameter of the microcapsules (A) and the microcapsules (B) is 0.01-100 It is characterized in that it is μm.

The thermoplastic polyurethane-based resin is commonly used in the art, for example, ether-based thermoplastic polyurethane, ester-based thermoplastic polyurethane, carbonate-based thermoplastic polyurethane, and the like. Preferably, the asphalt layer formed by the asphalt mixture 60 and the asphalt layer formed by the asphalt composition 40, which will be described in detail later, are damaged and have excellent light resistance in terms of exposure to sunlight for a long time when the primer layer is exposed. It is preferable to use an aliphatic polyurethane-based resin obtained by reaction with aliphatic isocyanates such as hexamethylene diisocyanate, dicyclohexylmethane diisocyanate, isophorone diisocyanate, polyol and a chain extender. As a specific example, Desmopan W DP 89085A from Bayer Material Science , DP 89043D, DP 89051D, DP 89056D, and the like.

The polyol is commonly used in the art for producing a thermoplastic polyurethane-based resin, and refers to a compound that has a hydroxyl group and reacts with an isocyanate to form a polyurethane. polyols, carbonate polyols, and the like.

The chain extender is a reactive monomolecule used to strengthen polymerization or intermolecular bonds, for example, diols such as ethylene glycol, propylene glycol, 1,4-butanediol, 1,6-hexanediol, diethylene glycol, glycerin, Triol such as trimethylolpropane, tetraol such as pentaerythritol, polyoxypropylenediamine, ethylenediamine, propylenediamine, butylenediamine, hexamethylenediamine, 1,4-cyclohexyldiamine, tetramethylpropylenediamine, tetramethylhexamethylenediamine , m-phenylenediamine, diamine such as toluenediamine, diethanolamine, amino alcohol such as triethanolamine, etc., may be used in any one or two or more.

In addition, the polyurethane-based resin may further include a curing catalyst during manufacture. As the curing catalyst, for example, triethylenediamine, pentamethyldiethylenetriamine, 1,8-diazabicyclo-5,4,0-undecene-7, dimethylaminoethanol, tetramethylethylenediamine, dimethylbenzylamine, Tetramethylhexamethylenediamine, bis(2-dimethylaminoethyl)ether, N,N'-dimethyl aminopropylamine, N,N'-dimethylaminopropanol, N,N'-dimethylethanolamine and 1-isobutyl-2 -Methylimidazole, N-methyl-N'-hydroxyethylpiperazine, N,N'-dimethylaminoethoxyethanol, N,N,N'-trimethylaminoethylethanolamine, etc. tertiary amines, trialkylphos tertiary phosphine, such as phosphine, dialkylbenzene phosphine, magnesium, zinc, cadnium, lead, titanium, chromium, manganese, iron, cobalt, etc. and acetylacetone, benzoylacetone, ethylacetoacetate, salicylaldehyde, cyclopentanone Metal chelate compounds that are chelate compounds with ligands such as -2-carboxylate and ethylacetonimine, Ti(OR)4, Sn(OR)4, Sn(OR)2, Al(OR)3 (where R is an alkyl group) or allyl group), such as metal alcoholates or metal phenolates, sodium acetate, potassium acetate, potassium laurate, potassium octylate, potassium lactate, tin acetate, tin dioctylate, dibutyltin dilaurate, cobalt naphthalate, etc. acid and the like. In addition, the curing catalyst may be used alone or in combination with each other. The amount of the curing catalyst is preferably adjusted so that the curing time of the component is in the range of 10 to 30 seconds, preferably 15 to 25 seconds.

The microcapsule (A) means that the vinyl group-containing silicone compound is included as an inner core. In this case, the vinyl-terminated silicone compound is, for example, vinyl-terminated polydimethylsiloxane, vinyl-terminated polydiethylsiloxane, vinyl-terminated polydiphenylsiloxane, vinyl-terminated diethylsiloxane-dimethylsiloxane copolymer, vinyl-terminated diphenylsiloxane-dimethyl Siloxane copolymer, vinyl terminated trifluoropropylmethylsiloxane-dimethylsiloxane copolymer, trimethylsiloxy terminated vinylmethylsiloxane-dimethylsiloxane copolymer, silanol terminated vinylmethylsiloxane-dimethylsiloxane copolymer, vinyl terminated vinylmethylsiloxane-dimethyl Siloxane copolymer, vinylmethylsiloxane homopolymer, vinylmethylsiloxane-octylmethylsiloxane-dimethylsiloxane copolymer, vinylmethylsiloxane-phenylmethylsiloxane-dimethylsiloxane copolymer, vinylmethoxysiloxane homopolymer, vinylethoxysiloxane homopolymer, Vinylethoxysiloxane-propylethoxysiloxane copolymer, etc., among which, considering the price, vinyl-terminated polydimethylsiloxane, vinyl-terminated polydiphenylsiloxane, vinyl-terminated diphenylsiloxane-dimethylsiloxane copolymer, etc. are used. it is preferable In addition, the microcapsule (A) may include any one or two or more of the vinyl group-containing silicone compound.

The microcapsule (B) means that the hydride group-containing silicone compound is included as an inner core. As the hydride group-containing silicone compound, for example, hydride-terminated polydimethylsiloxane, hydride-terminated polydiethylsiloxane, hydride-terminated polydiphenylsiloxane, hydride-terminated polyphenylmethylsiloxane, and trimethylsiloxy-terminated methylhydrosiloxane -Dimethylsiloxane copolymer, hydride-terminated methylhydrosiloxane-dimethylsiloxane copolymer, trimethylsiloxy-terminated polymethylhydrosiloxane, triethylsiloxy-terminated polyethylhydrosiloxane, hydride-terminated polyphenyl-(dimethylhydrosiloxy)silane , hydride-terminated methylhydrosiloxane-phenylmethylsiloxane copolymer, methylhydrosiloxane-octylmethylsiloxane copolymer, and the like. It is preferable to use In addition, the microcapsule (B) may include any one or two or more of the hydride group-containing silicone compound.

The microcapsules (A) or (B) are melamine-formalin resins, urea-formalin resins, polyurethane resins and silica, titania, zirconia, alumina, zinc oxide nanoparticles, etc. It may include one or more materials, and among them, in consideration of heat resistance and ease of encapsulation, melamine-formalin resins and urea-formalin resins are preferable.

For example, the microcapsules made of melamine-formalin resin or urea-formalin resin according to the present invention as a wall material can be manufactured using a well-known in situ method, which will be described in detail as follows.

First, an aqueous emulsifier solution is prepared as a first step. The emulsifier is very useful for improving the viscosity and particle size distribution of capsules. Examples of the emulsifier in the present invention include alkali metal sulfates such as sodium dodecyl sulfate, alkali metal salts of fatty acids such as alkali metal salts of octadecanoic acid, sodium dodecyl ether sulfate such as sodium dodecyl ether sulfate, anionic emulsifiers such as higher aliphatic hydrocarbons Cationic emulsifier, polyethylene glycol, polyoxyethylene alkyl ether, polyethylene oxide, polypropylene oxide, polyoxyethylene sorbitan monostearate, Nonionic emulsifiers such as polyoxyethylene sorbitan tristearate and polyoxyethylene glyceryl monostearate may be used alone or in combination of two or more. The emulsifier aqueous solution can be obtained by putting an emulsifier and conventional water such as distilled water in an emulsifier (Homomixer) and stirring at a temperature of 20° C. to 40° C., and is preferably prepared at a concentration of 1 to 15% by weight. If the amount of the emulsifier is less than 1% by weight, the emulsification is unstable and it is difficult to make an emulsion of a desired particle size, and if it exceeds 15% by weight, the viscosity of the capsule slurry produced with economic problems increases, so it may be difficult to use.

In the second step, an appropriate amount of a silicone compound containing a vinyl group or a silicone compound containing a hydride group, which will be the internal material of the capsule, is added to the emulsifier aqueous solution prepared in the emulsifier, and then the emulsifier rotation speed is 4,000 to 40°C at a temperature of 20°C to 40°C A fine-sized emulsion mixture is prepared by high-speed stirring at a speed of 10,000 rpm for 20 to 60 minutes.

As a third step, water is put into a separate reactor, melamine and formalin or urea and formalin are added, and reacted at a temperature of 50° C. to 70° C. for 20 to 60 minutes to prepare a melamine-formalin or urea-formalin prepolymer.

As a fourth step, the melamine-formalin or urea-formalin prepolymer is added to the emulsified mixture contained in the emulsifier and stirred at a temperature of 50° C. to 70° C. at a rotation speed of 200 to 1,000 rpm for 1 hour to 2 hours. After further advancing the polymerization reaction, a microcapsule slurry is obtained.

As a fifth step, the obtained microcapsule slurry is dried through a dryer such as a spray dryer to obtain microcapsules.

In the present invention, the size of the microcapsules is preferably in the range of 001 to 100㎛ average particle diameter, preferably 01 to 10㎛ range. If the average particle diameter is less than 001㎛, since the wall material thickness of the microcapsules is not proportionally extremely thin, the content of self-healing substances per microcapsule weight is small, so there is a risk that the self-healing effect may ultimately decrease. The surface roughness of (20) increases, and there is a risk that the contact sensitivity may be deteriorated.

The metal-based catalyst serves to promote the reaction so that when scratches occur on the primer layer, the self-healing compound in the capsule reacts quickly at room temperature to effectively remove the scratches. Examples of the metal-based catalyst include gold, nickel, palladium, titanium, rhodium, ruthenium, platinum-based complex, nickel-based complex, paratium-based complex, titanium-based complex, rhodium-based complex, ruthenium-based complex, and the like. In terms of reactivity, platinum, platinum-based complexes, and the like are preferable.

The polyurethane-based resin composition according to the present invention is based on 100 parts by weight of the thermoplastic polyurethane-based resin, 1 to 20 parts by weight of the microcapsule (A), preferably 3 to 15 parts by weight, and 1 to 20 parts by weight of the microcapsule (B). , preferably 3 to 20 parts by weight, 0.0001 to 0.5 parts by weight of the metal-based catalyst, preferably 0.001 to 0.1 parts by weight, wherein the content ratio of the microcapsules (A) and the microcapsules (B) is a microcapsule (A) ) / microcapsules (B) 0.5 to 2.0 weight ratio, preferably 0.7 to 1.5 weight ratio that satisfies the self-healing ability of the scratch is good.

When the content of the microcapsules (A) or microcapsules (B) is less than 1 part by weight, it is difficult to secure the desired scratch self-healing properties, and when it exceeds 20 parts by weight, there is a fear that mechanical properties may deteriorate. In addition, when the microcapsule (A) / microcapsule (B) is less than 0.5 or exceeds 2.0, there is a fear that the self-healing reaction efficiency is reduced.

In addition, if the amount of the metal-based catalyst added is less than 0.0001 parts by weight, there is a fear that the self-healing reaction rate is too low, and if it exceeds 0.5 parts by weight, there is a fear that economic feasibility may be impaired due to the high price.

Next, the first waterproofing treatment step (S30) of the present invention is to install the glass fiber mesh 30 on the top of the primer 20 before the primer 20 is cured, and a filament of 6 × 9 mm and The glass fiber mesh (30) woven with staple fire is installed and constructed with a weight of 0.08 kg.

The glass fiber mesh 30 is bonded with an adhesive force as if the asphalt composition 40, which is a coating film waterproofing agent, which will be described in detail later penetrates and is welded to the primer 20, and due to the flow rate characteristics of the asphalt composition 40, itself not saturated Accordingly, the glass fiber mesh 30 serves as a duct for removing the excess water vapor pressure generated in the bridge top plate 10 .

Next, the second waterproofing treatment step (S40) of the present invention is to form an asphalt layer by heating and laying the asphalt composition 40 on top of the primer 20 on which the glass fiber mesh 30 is installed. , by heating to a temperature of 200 to 220 ℃ and laying it in an amount of 5 to 7 kg/m2 to form an asphalt layer.

Specifically, the asphalt composition 40 is asphalt, cycloaliphatic epoxy resin, polyhydroxyaminoether, reactive diluent, adhesion activator, filler, surface-modified nano-ceramic metal powder, 4-hydroxyphenylamine, for viscosity control It contains alcohol.

More specifically, the asphalt composition 40 contains 10 to 30 parts by weight of a cycloaliphatic epoxy resin, 5 to 10 parts by weight of polyhydroxyaminoether, and 3 to 12.5 parts by weight of a reactive diluent based on 100 parts by weight of the asphalt. and 0.1 to 0.5 parts by weight of adhesive activator, 1.5 to 3 parts by weight of filler, 20 to 60 parts by weight of surface-modified nano-ceramic metal powder, 10 to 20 parts by weight of 4-hydroxyphenylamine, and 1 to 5 parts by weight of alcohol for viscosity control is composed by

In addition, the heated asphalt mixture, which was mainly used for conventional road pavement, cannot be installed by the cold field construction method, which is constructed at sub-zero temperatures, which is the winter season. The phenomenon (rutting phenomenon), irregularities of the longitudinal section (凹凸), corrugation phenomenon, and leveling phenomenon occur repeatedly, causing cracks in the road, port holes, peeling of aggregates, etc., thereby reducing the lifespan of the road. To solve the problem, a goose asphalt mixture with excellent impermeability, durability, abrasion resistance, impact resistance, flexibility, slip resistance and adhesion was developed.

Goose asphalt mixture, also called asphalt coule, is a special asphalt paving material, developed in France and referred to as goose asphalt in Germany and Japan, and asphalt mastic or mastic asphalt in the United Kingdom and the United States.

As mentioned above, the goose asphalt mixture has various advantages compared to the conventional heated asphalt mixture, but compaction is unnecessary even in construction, so it is installed by manpower plastering method or a professional finisher.

A conventional method for constructing such a goose-asphalt mixture is described as follows. Goose asphalt mixture is produced by using the mechanical forced mixing method at high temperature (170℃~250℃) of mixed solution, aggregate, sand, stone dust, etc. mixed in an appropriate ratio, and the weight of the mixed solution is 15~34% of the total weight of the mixture occupies 85-66% of the total weight of the mixture, such as sand, aggregate, and stone dust.

The mixed solution mixed with the asphalt mixture has high bonding strength, durability and waterproofness that can overcome all the disadvantages caused by temperature or load change, unlike the existing heated asphalt solution.

In particular, when a large amount of mixed solution is heated and mixed at a high temperature, the mixture has excellent fluidity like lava ejected from a volcano flows down, and as it cools naturally, the pavement layer can be integrated without performing a compaction process.

In the case of direct production and construction of the asphalt mixture as described above on site, a heater for heating materials such as mixed solution, aggregate, sand, and stone powder, a forced heating mixer, a quantitative supply device for mixed solution, a heater for heating aggregate, sand, stone powder, etc. Supply equipment, mixing liquid heating equipment, fuel supply equipment, electricity and power supply equipment, quality control equipment that controls all of them, other equipment, tools, miscellaneous materials, etc. are required.

That is, it will be apparent that the asphalt used in the present invention can be used by variously adjusting the conventional goose asphalt mixture or the commonly used asphalt mixture.

The cycloaliphatic epoxy resin is hexahydrophthalic acid diglycidyl ester (diglycidyl ester of hexahydrophthalic acid) or 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate (3,4-epoxycyclohexylmethyl 3 , 4-epoxy cyclohexane carboxylate), and 4-glycidyloxy-N,N-diglycidyl amine (4-glycidyloxy-N,N-diglycidyl aniline), and For excellent adhesion, it is preferably included in the same amount as above.

The surface-modified nano-ceramic metal powder contains 10 to 30 parts by weight of stearic acid in a reactor equipped with a thermometer and a stirrer, either acetone, ethyl acetate, or methyl ethyl ketone. After dissolving in 40 to 80 parts by weight of one polar solvent, 3-(triethoxysilyl)propyl isocyanate [3-(triethoxysilyl)propyl isocyanate] or 3-(trimethoxysilyl) propyl isocyanate [3-(trimethoxysilyl) propyl isocyanate] ] phosphorus difunctional reactive silane 5 to 20 parts by weight and tin (II) 2-ethylhexanonate by adding 0.01 to 0.1 parts by weight of a condensation catalyst at 30 to 60 ° C. at a speed of 100 to 200 rpm for 1 to 2 hours react

To the reactant reacted in this way, 10 to 100 parts by weight of a ceramic metal made of any one of zinc oxide (ZnO) having a size of 20 to 40 nm, talc, clay, lipid (TiO2), and calcium carbonate (CaCO3) It is added and reacted for 1 to 4 hours at a speed of 100 to 200 rpm at 30 to 60° C., followed by filtration and drying.

In addition, the asphalt composition 40 is a cycloaliphatic epoxy resin surface-modified zinc oxide with a size of 20 to 40 nm, or a curable resin obtained by mixing any one of talc, clay, fat sugar, and calcium carbonate with 4-hydroxy When mixed and cured with an amine curing agent such as phenylamine (4-hydroxyphenyl amine), a dense coating film is formed, so it provides high water-resistance and corrosion resistance to high-pressure water permeability and chemical environments.

In this case, the 4-hydroxyphenylamine may be replaced with any one of hexahydrophthalic anhydride and methylhexahydrophthalic anhydride.

In addition, the polyhydroxyamino ether is a resin produced from an epoxy compound and an amino compound. The excellent adhesion of this resin is because the hydroxyl group descending from the molecular core has a polar action between the layers with other parts in the molecular center. When this resin is adhered to the flame-retardant steel sheet at 180°C, the lineup strength is about 3500 psi, which falls within the range of 1500-5000 psi of the strength of thermosetting two-component epoxy resins. PHAE adheres well to resins such as PET with polar groups at temperatures well below the melting point. The breaking energy (Gic) of the film interface where PHAE was laminated on PET at 220°C was 45-60 J/m2.

In contrast, the high-barrier nylon resin has a Gic of 10 J/m2 or less in a laminated film with PET. Although the difference in absolute Gic is not large, in a multi-layer PET drop experiment formed by ventilation molding using various barrier layers, when PHAE is used as a barrier layer and when EVOH or nylon resin is used as a barrier layer, the resistance to delamination is 3-4 times higher. it can be seen that there is When PHAE is bonded at a high temperature above PET melting point (275℃), the boundary region between polyester and PHAE is melted.

It is thought that such a high-temperature adhesion mechanism causes a transesterification reaction between the PHAE primary hydroxyl group and the ester group in the molten PET core chain, thereby creating a covalent bond between PET and PHAE. The excellent adhesion of PHAE can be observed between particles of inorganic substances or the like incorporated as fillers of this resin. As the adhesive strength of the existing thermoplastic resin medium and filler is not so great, the mechanical strength of the resin containing the filler, especially the tensile stress, decreases as the filler content increases.

On the other hand, when fillers such as mica, talc calcium carbonate, wood flour, or granules are added to PHAE, the mechanical strength is improved as the amount of filler increases. As a specific example, a compression molded PHAE 40mil thick plate exhibits a breaking stress of 6300psi without fillers. The plate breaking stress of the thickness is greatly increased to 11000 psi. The tensile modulus of this filler-added PHAE molded plate is 813000 psi compared to 415000 psi without filler. When 20% of the resin weight is uniformly mixed with mica and talc as fillers in PHAE, the tensile strength is 13000 psi.

That is, the polyhydroxyamino ether contains 5 to 10 parts by weight in the asphalt composition 40 to realize the effect of excellent resistance to peeling by strong bonding with the polyethylene terephthalate contained in the primer layer 20 described above. And, the filler is configured to include any one or more of mica, talc, calcium carbonate, and wood flour, thereby realizing the effect of increasing the tensile strength of the polyhydroxyamino ether to have high durability, as described above. .

The reactive diluent and the adhesion activator may be any conventionally used, and it is preferable that they are included in the same weight ratio as above to improve the physical properties and reactivity of the asphalt composition.

Next, the construction surface strengthening treatment step (S50) of the present invention is to form a sphere reinforcement layer by laying a sphere reinforcement 50 containing garnet or silica sand on the upper portion of the asphalt composition 40, which will be described in detail later. In order to increase the adhesive force with the asphalt mixture 60 to be used, garnet or silica sand of 3 to 5 mm is sprayed in an amount of 2 kg/m 2 after the asphalt composition 40 is installed before the asphalt composition 40 is cured.

At this time, the sphere reinforcing agent 50 may be made of a mixture of any one or more of garnet or silica sand, and when it is made of a mixture of any one or more of garnet or silica sand, it is preferable to be evenly installed through an installation device.

Specifically, the sphere reinforcing agent 50 has a high hardness as an aggregate and 50 wt% of hard garnet or silica sand of 300 to 600 μm, 40 wt% of white Portland cement, and 10 wt% of alumina cement A powder comprising, 29.5 to 34.5 wt% of polyacrylate copolymer emulsion, 64.5 to 69.5 wt% of purified ionized water, 0.2 to 0.3 wt% of a curing agent, 0.2 to 0.3 wt% of an antifoaming agent, 0.1 to 0.2 wt% of a preservative, and 0.3 to 0.5 wt% of a disinfectant It is composed of an admixture comprising an admixture comprising 0.1 wt% and 0.1 wt% of a fragrance, characterized in that the powder and the admixture are mixed in a ratio of 1:1.

At this time, when the sphere reinforcing agent 50 is not made of only a mixture of any one or more of garnet or silica sand, but is composed of the powder and admixture as described above, it is preferable to spray it using a spray to apply it evenly.

In addition, the concrete reinforcement layer formed by the concrete reinforcing agent 50 is, as described above, the adhesion strength with the asphalt mixture 60 to be described later as the surface is irregularly formed by the garnet or silica sand aggregate. to realize the improvement effect.

Garnet or silica sand of the powder is added to improve hardness, strength and adhesion, and to impart abrasion resistance and durability. Since the physical properties of the sphere reinforcing agent 50 may be rather deteriorated by garnet or silica sand, it is preferably included in the composition ratio as described above.

The powdery white Portland cement and alumina cement are preferably included in a composition ratio of 40% by weight and 10% by weight, respectively. This is because, when the composition ratio is less than the above, the role of increasing the initial strength of curing is poor, and the physical properties of the sphere reinforcing agent 50 may be reduced.

In addition, the white Portland cement contained in the powder is hydraulic and has finer particles than ordinary Portland cement, so it has a high density and high initial strength, thereby exhibiting the effect of improving durability. While realizing the effect, the effect of allowing the garnet or silica sand to protrude on top of the asphalt layer formed by the asphalt composition 40 more stably and firmly is realized.

The polyacrylate copolymer emulsion of the admixture is to increase the adhesion function and compression and flexural strength of the sphere reinforcing agent 50, and is preferably included in the same composition ratio as above. Although improved, the compressive strength and flexural strength are lowered, and when it contains less than 34.5 wt%, the compressive strength and flexural strength are lowered, and at the same time, the adhesive force with the asphalt mixture (60), which will be described in detail later, is greatly reduced. preferably included.

The curing agent of the admixture is used for the dispersing function of the resin and water, and is preferably included in the composition ratio as described above. When it is included, it is preferable to include in the composition ratio as described above because physical properties such as compressive strength and flexural strength are reduced.

The antifoaming agent of the admixture suppresses air bubbles so that the binding function of the sphere reinforcing agent 50 is increased, and is preferably included in the composition ratio as described above. is reduced, and when it is included in excess of 0.3 wt%, it is preferable to include in the composition ratio as described above because the physical properties are deteriorated by affecting the complete bonding of the acrylic resin and the aggregate.

The preservative and the fungicide of the admixture are to prevent the deterioration of the sphere strengthening agent 50, and are preferably included in the composition ratio as described above. If storage is impossible, and if the preservative is contained in excess of 0.2% by weight, it causes deterioration of physical properties during mixing. When it is included in excess of 0.5% by weight, it is preferable to include in the composition ratio as described above because it causes deterioration of physical properties during mixing.

The concrete reinforcing agent 50 is an aqueous acrylic polymer mixed with second-component garnet or silica sand used by mixing the powder and admixture composed as described above in a 1:1 ratio, and an asphalt layer formed by the asphalt composition 40 with aqueous alkalinity. By filling the voids of the do it

Finally, the paving step (S60) of the present invention is to form an asphalt layer by laying the asphalt mixture 60 on the sphere reinforcement layer formed by the sphere reinforcement agent 50, and by the sphere reinforcement agent 50 described above. The adhesion is strengthened by the garnet or silica sand protruding on the upper part of the formed sphere-reinforced layer, so that it is formed more stably.

At this time, since the asphalt mixture 60 forming the asphalt layer may use any kind of conventional asphalt, a detailed description will be omitted.

The above has been described with reference to a preferred embodiment of the present invention, and is not limited to the above embodiment, and a person skilled in the art through the above embodiment does not deviate from the gist of the present invention It can be implemented with various changes in

10: bridge deck
20: Primer
30: glass fiber mesh
40: asphalt composition
50: sphere strengthening agent
60: asphalt mixture

Claims (10)

delete delete In the construction method of waterproofing the new concrete bridge top plate 10 that has been cured or the old concrete bridge top plate 10 treated with polymer concrete and Linax,
A construction surface treatment step (S10) of treating the base surface by removing foreign substances such as dust, oil, and latency of the bridge top plate 10; and
An adhesion reinforcement treatment step (S20) of applying a primer 20 to the surface of the bridge top plate 10; and
A first waterproofing treatment step (S30) of laying the glass fiber mesh 30 on the top of the primer 20 (S30); and
A second waterproofing treatment step (S40) of heating and installing the asphalt composition 40 on the upper portion of the primer 20 on which the glass fiber mesh 30 is installed (S40); and
A construction surface reinforcement treatment step (S50) of installing a concrete reinforcement 50 containing garnet or silica sand on the asphalt composition 40; and
A pavement step (S60) of laying the asphalt mixture (60); is configured to include,
The asphalt composition 40 is
Asphalt, cycloaliphatic epoxy resin, polyhydroxyamino ether, reactive diluent, adhesion activator, filler, surface-modified nano-ceramic metal powder, 4-hydroxyphenylamine, and alcohol for viscosity control,
The primer 20 is
It is characterized in that it is composed of ester-modified bisphenol F-type epoxy resin, polyethylene terephthalate, phenyltrimethoxysilane, 4-hydroxyphenylamine, and an antifoaming agent,
The primer 20 is
Thermoplastic polyurethane-based resin, microcapsule containing a vinyl group-containing silicone compound as a core (A), microcapsule containing a hydride group-containing silicone compound as a core (B), and a self-healing composition comprising a metal catalyst A method for waterproofing a bridge using an adhesion-enhancing surface-modified nano-ceramic metal powder, characterized in that
4. The method of claim 3,
The primer 20 is
50 to 70 parts by weight of ester-modified bisphenol F-type epoxy resin; and
5 to 15 parts by weight of polyethylene terephthalate; and
10 to 40 parts by weight of phenyltrimethoxysilane; and
10- 20 parts by weight of 4-hydroxyphenylamine; and
0.1 to 0.3 parts by weight of an antifoam; and
Self-healing composition 4-8 parts by weight; Bridge surface waterproofing construction method using surface-modified nano-ceramic metal powder, characterized in that it comprises.
5. The method of claim 4,
The self-healing composition is
With respect to 100 parts by weight of the thermoplastic polyurethane-based resin,
1 to 20 parts by weight of microcapsules (A); and
1 to 20 parts by weight of microcapsules (B); and
0.0001 to 0.5 parts by weight of a metal-based catalyst; and
The content ratio of the microcapsules (A) and the microcapsules (B) is 0.5 to 2 for the microcapsules (A)/microcapsules (B). .
6. The method of claim 5,
An average particle diameter of the microcapsules (A) and the microcapsules (B) is 0.01 to 100 μm.
In the construction method of waterproofing the new concrete bridge top plate 10 that has been cured or the old concrete bridge top plate 10 treated with polymer concrete and Linax,
A construction surface treatment step (S10) of treating the base surface by removing foreign substances such as dust, oil, and latency of the bridge top plate 10; and
An adhesion reinforcement treatment step (S20) of applying a primer 20 to the surface of the bridge top plate 10; and
A first waterproofing treatment step (S30) of laying the glass fiber mesh 30 on the top of the primer 20 (S30); and
A second waterproofing treatment step (S40) of heating and installing the asphalt composition 40 on the upper portion of the primer 20 on which the glass fiber mesh 30 is installed (S40); and
A construction surface reinforcement treatment step (S50) of installing a concrete reinforcement 50 containing garnet or silica sand on the asphalt composition 40; and
A pavement step (S60) of laying the asphalt mixture (60); is configured to include,
The asphalt composition 40 is
Asphalt, cycloaliphatic epoxy resin, polyhydroxyamino ether, reactive diluent, adhesion activator, filler, surface-modified nano-ceramic metal powder, 4-hydroxyphenylamine, and alcohol for viscosity control,
The asphalt composition 40 is
With respect to 100 parts by weight of asphalt,
10 to 30 parts by weight of cycloaliphatic epoxy resin; and
5 to 10 parts by weight of polyhydroxyaminoether; and
3 to 12.5 parts by weight of a reactive diluent; and
0.1 to 0.5 parts by weight of an adhesive activator; and
1.5 to 3 parts by weight of filler; and
20-60 parts by weight of surface-modified nano-ceramic metal powder; and
10- 20 parts by weight of 4-hydroxyphenylamine; and
1 to 5 parts by weight of alcohol for viscosity control; A bridge surface waterproofing construction method using an adhesion-enhancing surface-modified nano-ceramic metal powder, characterized in that it comprises.
8. The method of claim 7,
The cycloaliphatic epoxy resin is
Contains any one of hexahydrophthalic acid diglycidyl ester, 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexane carboxylate, and 4-glycidyloxy-N,N-diglycidyl amine A bridge waterproofing construction method using an adhesion-enhancing surface-modified nano-ceramic metal powder, characterized in that it is composed of
9. The method of claim 8,
The filter is
A bridge surface waterproofing construction method using an adhesion-enhancing surface-modified nano-ceramic metal powder, characterized in that it comprises at least one of mica, talc, calcium carbonate, and wood flour.
10. The method of claim 9,
The surface-modified nano-ceramic metal powder is
In a reactor equipped with a thermometer and a stirrer, 10-30 parts by weight of stearic acid is dissolved in 40-80 parts by weight of any polar solvent of acetone, ethyl acetate, or methyl ethyl ketone, and then 3-(triethoxysily) propyl isocyanate or 3 (trimethoxysilyl) propyl isocyanate, 5-20 parts by weight of a difunctional reactive silane and tin (II) 2-ethylhexanonate by adding 0.01 to 0.1 parts by weight of a condensation catalyst, 100 ~ at 30 ~ 60 ℃ React at a speed of 200 rpm for 1 to 2 hours, add 10 to 100 parts by weight of a ceramic metal made of any one of zinc oxide with a size of 20 to 40 μm, talc, clay, fat sugar, and calcium carbonate, and then at 30 to 60 ° C. A bridge surface waterproofing construction method using an adhesion-enhancing surface-modified nano-ceramic metal powder, characterized in that it is reacted at a speed of 200 rpm for 1 to 4 hours, then filtered and dried.

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