KR101378936B1 - Waterproof complex layer of road comprising mma waterproofing composition and construction method for thereof - Google Patents

Abstract

The present invention relates to a waterproof complex layer for road having a MMA waterproofing composition and a construction method thereof. In particular, a primer layer and acrylic waterproof layer are formed on an upper side of a concrete substrate layer and an asphalt layer is formed on an upper side of the waterproof layer. Thereby, rapid construction is possible; an adhesive force and waterproofing characteristics of the concrete layer and the asphalt layer are enhanced; and consequently durability of the waterproof complex layer for road having a MMA waterproofing composition is outstandingly enhanced.

Description

Waterproof complex layer of road comprising MMA waterproofing composition and construction method for

The present invention relates to a road surface waterproofing composite layer including a MMA waterproofing material composition and a construction method thereof, and more specifically, a primer layer and an acrylic waterproofing layer are formed on a base concrete layer, and an asphalt layer is formed on the waterproofing layer, thereby providing rapid construction. The present invention relates to a road surface waterproofing composite layer including a MMA waterproofing material composition which is significantly improved in durability by improving adhesion and waterproofing properties of a concrete layer and an asphalt layer, and a construction method thereof.

Asphalt pavement is often used in most road pavement because it is mixed with stone, sand, crushed stone, etc. Asphalt pavement causes pavement breakdown due to wheel rutting or cracking as time passes after initial construction, and such road breakage is caused by increased traffic and solar (ultraviolet) and moisture (moisture). Weather damage, weathering, deterioration, flooding, external impacts, etc. are damaged due to changes in climate and environment. In particular, solar heat oxidizes asphalt, shrinks and expands to create gaps and eventually cracks. For weakening the packaging structure.

In the case of neglecting such old breakage, water is infiltrated and road destruction proceeds, and vehicle traffic on the surface of the road soon worsens the pavement structure around the crack, and furthermore, a porthole The pavement falls off and becomes a risk factor for the safe operation of the road, and partial repairs must be made at the appropriate time for such damaged parts. The packaging must result in huge economic losses.

In addition, the bridge construction method using asphalt concrete has been mainly performed as a bridge packaging method of the conventional bridge. As the construction method of bridge pavement using asphalt concrete is permeable pavement, in order to protect the bridge deck reinforced concrete, a waterproofing layer is installed before the bridge pavement. It has been. In the case of the conventional asphalt concrete bridge pavement, the waterproof layer is damaged when repaving after cutting the asphalt, and the waterproof property of the bridge is lost, and chloride ion penetrates into the reinforced concrete of the bridge deck to promote corrosion of the rebar. There has been a serious problem that cracks in reinforced concrete cause premature degradation of bridge deck concrete. In addition, asphalt concrete is a flexible paving material, which requires repacking every five years on average to ensure the required driving performance due to plastic deformation, aging, and peeling. There was a problem that became a serious factor.

In general, the bottom plate of a bridge is the most frequent member among bridge members because it is easily exposed to cracks due to plastic shrinkage and dry shrinkage from the beginning of construction, and is directly exposed to repeated traffic loads and various environmental conditions. After the cross-section paving, the requirements for the cross-section paving are easy to secure flatness, high waterproofness, large flexural tensile strength and resistance to cracking. There is a need for waterproofing layer construction between floor slab and pavement pointed out, lifting water, generation of residual water, damage of structure due to chloride infiltration, increase of maintenance costs and frequent complaints due to frequent repair work. Poor ride comfort due to lack of flatness, increased running noise, waterproof And crack resistance are excellent, and to a low chloride penetration force (load-bearing capacity) due to the early deterioration of concrete down to a ground such as generation was introduced bridge deck packing method using a latex blend modified concrete (LMC) in Korea.

At present, in Europe and North America (especially in the United States), various types of modified asphalt methods have been put to practical use in the repair of roads and bridges, and one of them is about 20% of waste. It is a "high temperature mixed rubber asphalt" method that adds tire rubber powder, and it is applied to the road by combining the excellent components of waste tire rubber (such as oxide and UV blocking material) with asphalt. It has been used as a general road repair method for decades.

For example, Korea Patent Registration No. 10-0605093 (Patent Document 1) is to remove the old concrete or asphalt concrete pavement or bridge by a certain thickness and after cleaning the surface, asphalt 65-75% by weight, thermoplastic synthetic rubber A rubber asphalt adhesive layer consisting of 5-15% by weight, 0.5-10% by weight of additives and 9.5-20% by weight of filler is applied, and asphalt-impregnated glass fiber nonwoven fabric is applied thereon, and then asphalted at 130-170 ° C. Resurfacing or repairing of roads or bridges, which consist of curing by hardening, is known.

In addition, Republic of Korea Patent No. 10-0849528 (Patent Document 2) in the step of removing the pavement layer using a road surface crusher; After the pavement layer removal step, the self-made crusher is used to remove the waterproof layer and to flatten the surface layer of the uneven portion, and to reduce the deteriorated area, the boulder, and the pollutants of the concrete by using a shot blaster or a water jet to increase the adhesion of the old and new concrete. A surface treatment step of removing and cleaning the surface using an inhaler; 5 to 60% by weight of partially hydrophobized aqueous silica sol, 0.1 to 60% by weight of alkali silicate, solvent is 30 to 50% by weight and 0.1 to 10% by weight of boric acid based on 100% by weight of the surface treatment step Applying a surface layer enhancer which is mixed; Pouring quick-drying acrylic modified concrete; A stopping step of stopping the paving surface by using a double vibrator or concrete finisher so that the poured concrete becomes flat with the existing paving surface; Disclosed is a bridge pavement and road repair method comprising a; stabilizing step of spraying a surface protection agent to prevent the initial cracking of concrete after stabilizing the surface immediately after stopping.

However, such an elastic material such as thermoplastic rubber and additives such as surface protection agent are different from asphalt and elastic modulus and physical properties after construction hardening, so they do not detach sufficiently after a certain period of time, or do not sufficiently block the voids in the cracked portion, and thus the strength is easily broken. There is a problem that the frequency is high, it does not continuously endure daylight and alkali, salt, water, etc., and the construction time and the construction cost are high.

Korean Patent Registration No. 10-0605093 Republic of Korea Patent No. 10-0849528

In order to solve the above problems, the present invention is a primer layer and an acrylic waterproof layer is formed on the base concrete layer, by forming an asphalt layer on the waterproof layer, it is possible to quickly construction at room temperature, the base concrete layer and asphalt layer It is an object of the present invention to provide a road surface waterproofing composite layer formed of the MMA waterproof material composition which is significantly improved durability by improving the adhesion and waterproof properties of the.

In addition, by containing an adhesion enhancer and a vinyl monomer containing phosphorus (P), the flexibility of the waterproofing layer is improved, the base concrete layer and the asphalt layer are firmly adhered to improve the waterproofing property, and the asphalt layer is broken due to moisture infiltration. It is an object of the present invention to provide an MMA waterproofing material composition which can significantly reduce wear such as cracking.

In addition, an object of the present invention is to provide a construction method of the road surface waterproofing composite layer using the MMA waterproofing material composition.

In addition, when constructing a thin road surface waterproof composite layer, it is an object to provide a construction method suitable for both mechanical construction as well as manpower construction.

The present invention for achieving the above object is a base concrete layer; A primer layer formed on the base concrete layer; A waterproof layer formed on the primer layer; And an asphalt layer formed on the waterproof layer, wherein the waterproof layer relates to a road surface waterproof composite layer formed of an MMA waterproof material composition.

The primer layer is formed of a one-component or two-component primer composition comprising a (meth) acrylic resin and a curing agent, wherein the waterproof layer is one or two or more monomer mixtures selected from the group of (a) (meth) acrylic monomers, ( b) an acrylic copolymer, (c) a vinyl monomer containing phosphorus (P), (d) one or two or more kinds of polymerization promoters selected from amine compounds or metal oxides, (e) crosslinking agents, and (f) adhesion improving agents And (g) it may be formed of MMA waterproof material composition comprising paraffin wax.

The thickness of the primer layer is formed by coating 0.3 to 0.4kg per m 2, the thickness of the waterproof layer may be formed of 1 to 2mm, one type selected from the primary asphalt, the modified emulsion, silica sand, solid asphalt on the waterproof layer. Or it may further comprise an adhesion promoting layer comprising two or more, the road surface waterproofing composite layer has a tensile adhesive strength of 0.6 to 2.0N / ㎜ according to KS F4932, shear adhesion strength according to KS F4932 0.15 It is preferable that it is to 1.0N / mm <2>.

Moreover, this invention is 20 to 60 weight% of 1 type (s) or 2 or more types of monomer mixtures chosen from (a) (meth) acrylic-type monomer group, (b) 30-70 weight% of acryl-type copolymer, (c) phosphorus (P) 0.01 to 5% by weight of vinyl monomer, 0.1 to 15% by weight of one or two or more types of polymerization promoters selected from (d) amine compounds or metal oxides, (e) 0.1 to 15% by weight of crosslinking agents, (f) It relates to an MMA waterproof material composition comprising 8 to 30% by weight of the adhesion improving agent and 1 to 10% by weight of (g) paraffin wax.

The acrylic copolymer (b) is 20 to 80% by weight of methyl methacrylate and one or two or more copolymerizable comonomers selected from methacrylate monomer, acrylate monomer, methacrylic acid or acrylic acid. It is an acrylic copolymer copolymerized at 70% by weight, wherein the methacrylate monomer is ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, lauryl methacrylate, 2-ethylhexyl methacrylate, and the acrylate monomer may include methyl acrylate, ethyl acrylate, n-butyl acrylate, t- butyl acrylate, 2-ethylhexyl acrylate.

The vinyl monomer containing phosphorus (P) is diethyl allyl phosphate, hydroxyethyl methacrylate phosphate, hydroxyethyl acrylate phosphate, bis (2-hydroxyethyl methacrylate) acid phosphate, 2- It may be one or two or more selected from hydroxyethyl methacrylate phosphate, tris (2-hydroxyethyl methacrylate) phosphate, and the (f) adhesion improving agent is C1-C8 methacrylic acid alkyl ester, C1 50-70% by weight of C8 acrylic acid alkyl esters or mixtures thereof and 5-40% by weight of styrene, α-methylstyrene, halogen or alkyl substituted styrene or mixtures thereof and acrylonitrile, methacrylonitrile or mixtures thereof 10 It may be an acrylic ester graft copolymer polymerized with a monomer mixture composed of ˜30% by weight.

In addition, the present invention comprises the steps of a) applying a primer; b) 20 to 60% by weight of one or two or more monomer mixtures selected from the group of (a) (meth) acrylic monomers, (b) 30 to 70% by weight of the acrylic copolymer, and (c) phosphorus (P) 0.01 to 5% by weight of vinyl monomer, (d) 0.1 to 15% by weight of one or two or more types of polymerization accelerators selected from amine compounds or metal oxides, (e) 0.1 to 15% by weight of crosslinking agents, and (f) adhesion improving agents 8 Forming a waterproofing layer by applying an MMA waterproofing composition comprising 30 wt% and (g) 1-10 wt% of paraffin wax on the primer; And c) applying asphalt heated to 150 to 200 ° C. above the waterproof layer.

The primer layer is applied to 0.3 to 0.4kg per m 2, the waterproof layer may be applied to a thickness of 1 to 2mm, purifying the base concrete upper part before step a), and fills the purified concrete surface with superhard concrete It may further include a concrete planarization step, and further comprising the step of b) spraying one or more selected from primary asphalt, modified emulsion, silica sand, solid asphalt after the step of forming the waterproof layer. Can be.

In addition, b) the coating of the MMA waterproofing material composition in the step of forming a waterproof layer may be applied to a manpower, equipment or a mixture thereof.

According to the road surface waterproofing composite layer comprising the MMA waterproof material composition of the present invention and a construction method thereof, by forming a waterproof layer with the MMA waterproof material composition between the base concrete layer and the asphalt layer, the adhesion and waterproof properties of the base concrete layer and asphalt layer is improved. It has the advantage that it can be quickly cured at room temperature and can be quickly installed.

In addition, there is an advantage that can further improve the adhesion of the waterproof layer and the asphalt layer by forming an adhesion promoting layer on the waterproof layer.

In addition, by containing the adhesion enhancer and the vinyl monomer containing phosphorus (P) in the MMA waterproofing material composition, the flexibility of the waterproofing layer can be improved, and the base concrete layer and the asphalt layer are firmly adhered to improve the waterproofing property, There is an advantage to improve the durability by reducing the wear, such as cracking or cracking of the asphalt layer according to.

In addition, the MMA waterproof material composition of the present invention has the advantage that can be selected by an appropriate method according to the situation, regardless of manpower construction or equipment construction.

Hereinafter, preferred embodiments and properties measurement methods will be described in detail with respect to a road surface waterproofing composite layer including the MMA waterproofing material composition of the present invention and a construction method thereof. The present invention may be better understood by the following examples, which are for the purpose of illustrating the present invention and are not intended to limit the scope of protection defined by the appended claims.

The present invention in order to achieve the above object is a concrete layer; A primer layer formed on the base concrete layer; A waterproof layer formed on the primer layer; And an asphalt layer formed on the waterproof layer, wherein the waterproof layer forms a road surface waterproof composite layer formed of an MMA waterproof material composition.

The road surface waterproofing composite layer may improve the adhesion between the base concrete and the asphalt by forming a primer layer and a waterproof layer between the base concrete layer and the asphalt layer of the top layer, thereby improving durability, thereby modifying the conventional thermoplastic rubber or latex. The change over time is less than when the asphalt is used, and it is possible to prevent cracking and crack formation of the asphalt.

The primer layer fills the gap between the road surface of the base concrete and improves the bonding strength between the base concrete layer and the waterproof layer by providing excellent adhesion with the waterproof layer, thereby preventing detachment of the waterproof layer and the concrete, thereby more firmly attaching the waterproof layer and the base concrete. As a result, it is formed to have resistance to repeated freeze-thawing.

This primer layer comprises at least one (meth) acrylate resin selected from urethane (meth) acrylate resins, epoxy (meth) acrylate resins or polyester (meth) acrylate resins, polymerizable unsaturated monomers and curing agents. It is preferably formed from a one-part or two-part primer composition.

Among the above-mentioned (meth) acrylate resins, urethane (meth) acrylate resins are excellent in permeability and excellent in adhesive strength with aggregates, and are effective for filling gaps in the road surface of base concrete and improving adhesion with waterproof layers. Such (meth) acrylate resin is preferably 25 to 60% by weight based on the total weight of the primer composition for adhesion and strength improvement.

The primer composition is mixed with a (meth) acrylate resin, a polymerizable unsaturated monomer and a curing agent to form a waterproof layer. The polymerizable unsaturated monomer is at least two ethylenically unsaturated groups in one molecule, preferably (meth) It is preferable that it is a monomer containing two acryloyl groups. For example, ethylene glycol di (meth) acrylate, 1,2-propylene glycol di (meth) acrylate, 1,3-butylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) Alkanediol di (meth) acrylate of acrylate; Or polyoxyalkylene glycol di (meth) acryl of dipropylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate Rate; It may be selected from one kind or two or more kinds.

The curing agent can be used without limitation as long as it is an organic peroxide curing agent known in the art, for example, from benzoyl peroxide type, diacyl peroxide type, hydroperoxide type, dialkyl peroxide type, ketone peroxide type It may be selected and more preferably using a benzoylpaoxide-based organic peroxide is effective in improving the adhesion of the primer composition to the base concrete to improve the permeability.

It is preferable that content of a hardening | curing agent contains 1-6 weight part with respect to 100 weight part of (meth) acrylate resin and a polymerizable unsaturated monomer.

The primer composition may further include additives well known in the art such as paraffin wax, drying aid, plasticizer, antioxidant, filler, thickener, etc., in addition to (meth) acrylate resin, polymerizable unsaturated monomer and curing agent. .

It is effective that the primer layer formed of the primer composition is coated by 0.3 to 0.4kg per 1 m 2. When the primer layer is formed to less than 0.3kg per 1㎡, the improvement of adhesion between the base material concrete layer and the waterproofing layer may be insignificant to cause the phenomenon of lifting of the waterproofing layer, and when formed in excess of 0.4kg per 1㎡ Due to the slow curing speed, there may be difficulty in rapid construction.

The present invention is characterized in that the waterproof layer is formed on the primer layer. The waterproof layer may be formed to improve adhesion between the base concrete layer and the asphalt layer together with the primer layer, to effectively implement the waterproof property, and to improve durability. In addition, in order to further improve the adhesion between the waterproof layer and the asphalt layer may further include an adhesion promoting layer on the upper of the waterproof layer, the adhesion promoting layer is one or two or more of the original asphalt, modified oil, silica sand, solid asphalt. Can be selected. The solid asphalt includes granular asphalt.

The waterproofing layer may include one or two or more monomer mixtures selected from the group of (a) methacrylic monomers, (b) acrylic copolymers, (c) vinyl monomers containing (P), (d) amine compounds or It may be formed of an MMA waterproofing material composition comprising one or two or more types of polymerization promoters selected from metal oxides, (e) crosslinking agents (f) adhesion strength improving agents, and (g) paraffin wax.

The one or two or more monomer mixtures selected from the (a) (meth) acrylic monomer group include 20 to 60% by weight of the total MMA waterproofing composition, and the waterproofing layer has an optimum degree of curing and improves waterproofing properties. It is effective because we can do it. When the one or two or more monomer mixtures selected from the group of (a) (meth) acrylic monomers is less than 20% by weight, the curing property may be lowered, thereby reducing waterproofing and durability. Adhesion between the layer and the asphalt layer is reduced, and the degree of curing is significantly increased, so that when the road surface waterproofing composite layer is formed, it may be easily broken or cracked.

The (meth) acrylic monomer is a known (meth) acrylic monomer used in the waterproofing layer composition can be used without limitation, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, lauryl methacrylate, 2-ethylhexyl methacrylate, methyl acrylate, ethyl acrylate, n-butyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, caprolactone Acrylate, stearyl methacrylate, isodecyl methacrylate, benzyl methacrylate, stearyl acrylate, tetrahydroperfuryl methacrylate, phenoxy methacrylate and the like can be exemplified.

The acrylic copolymer (b) is 20 to 80% by weight of methyl methacrylate and one or two or more copolymerizable comonomers selected from methacrylate monomer, acrylate monomer, methacrylic acid or acrylic acid. As an acrylic copolymer copolymerized at 70% by weight, it serves to impart water resistance, hardness and flexibility of the waterproof layer.

If the methyl methacrylate is less than 30% by weight, the comonomer is more than 70% by weight can not implement sufficient hardness and water resistance, methylmethacrylate is more than 80% by weight, or if the comonomer is less than 20% by weight Since the hardness is excessively high and easily broken, and the adhesion between the primer layer and the asphalt layer can be reduced, copolymerization in the above content range is effective for improving the hardness and water resistance and improving the adhesion between the primer layer and the asphalt layer. In addition, the (b) acrylic copolymer is effective in that the glass transition temperature (Tg) of -20 to 60 ℃ is advantageous in low temperature flexibility and excellent adhesion and waterproof properties at room temperature.

The methacrylate monomer that can be used as the comonomer of the (b) acrylic copolymer is ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, lauryl methacrylate. , 2-ethylhexyl methacrylate, stearyl methacrylate, isodecyl methacrylate, benzyl methacrylate, tetrahydroperfuryl methacrylate, phenoxy methacrylate,

The acrylate monomer may include methyl acrylate, ethyl acrylate, n-butyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, caprolactone acrylate, stearyl acrylate.

The vinyl monomer containing phosphorus (P) is added to improve the adhesion between the primer layer and the asphalt layer. Diethyl allyl phosphate, hydroxyethyl methacrylate phosphate, hydroxyethyl acrylate phosphate, bis (2-hydroxyethyl methacrylate) acid phosphate, 2-hydroxyethyl methacrylate phosphate, tris (2-hydroxyethyl methacrylate) acid phosphate may be one or two or more selected from MMA waterproof material Including 0.01 to 5% by weight of the total weight of the composition is effective because it effectively improves the adhesion between the primer layer and the asphalt layer is remarkably excellent waterproof properties.

The (d) polymerization accelerator may be used by mixing one or more selected from the amine-based compound or metal oxide, and 0.1 to 15% by weight of the total MMA waterproofing material composition is cured faster at room temperature and is quickly installed. It is effective because we can do it. As a more specific example of the polymerization accelerator (d), N, N-di (2-hydroxypropyl) -p-toluidine, tri-n-butylamine, N, N-dimethyl-p-toluidine, N- Ethyl-N-hydroxy ethyl aniline, N, N- dimethyl aniline, etc. are mentioned.

The crosslinking agent (e) cures a vinyl monomer containing (a) a (meth) acrylic monomer mixture, (b) acrylic copolymer and (c) phosphorus to form a three-dimensional network structure to have an optimal strength and waterproof properties. It is added to form this excellent waterproofing layer, for example, ethylene glycol diacrylate, ethylene glycol dimethacrylate, 1,2-propylene glycol diacrylate, 1,2-propylene glycol dimethacrylate, 1 , 3-butylene glycol diacrylate, 1,3-butylene glycol dimethacrylate, 1,4-butylene glycol dimethacrylate, 1,6-hexanediol diacrylate, 1,4- One or two or more kinds selected from butanediol diacrylate may be selected. The content of the crosslinking agent is effective because 0.1 to 15% by weight of the total weight of the MMA waterproofing material composition can improve durability by maintaining flexibility while at the same time realizing optimal strength and waterproofing properties.

When the content of the crosslinking agent is less than 0.1% by weight, it may not be sufficiently cured and the durability may be lowered. When the content of the crosslinking agent is greater than 15% by weight, the flexibility of the waterproof layer may be lowered, thereby easily breaking or cracking the road surface waterproofing composite layer.

The (f) adhesion improving agent is an acrylic ester-based graft copolymer, which improves the miscibility of the (a) acrylic monomer mixture, (b) acrylic copolymer and (c) phosphorus-containing vinyl monomer to uniformly form a waterproof layer. Be sure to In addition, when spraying high temperature (150 ~ 200 ℃) asphalt on top of the waterproof layer, the fluidity of the adhesion enhancer is increased to facilitate the penetration of the MMA waterproof material composition into the asphalt, thereby improving the flexibility of the waterproof layer to the base concrete layer and By firmly adhering the asphalt layer to improve the waterproofing properties, and serves to reduce the wear, such as cracking and cracking of the asphalt layer due to moisture infiltration.

The adhesion improving agent may be selected from (C1-C8) methacrylic acid alkyl ester, (C1-C8) acrylic acid alkyl ester or 50 to 70% by weight thereof and styrene, α-methylstyrene, halogen or alkyl substituted styrene or mixtures thereof. A copolymer obtained by polymerizing a monomer mixture composed of ˜40 wt% and 10-30 wt% of acrylonitrile, methacrylonitrile or a mixture thereof.

The (C1-C8) methacrylic acid alkyl ester and the (C1-C8) acrylic acid alkyl ester are esters obtained from monohydryl alcohol containing methacrylic acid or acrylic acid and 1 to 8 carbon atoms, respectively. The C1-C8) methacrylic acid alkyl ester is methacrylic acid methyl ester, methacrylic acid ethyl ester or methacrylic acid propyl ester, and the (C1-C8) acrylic acid alkyl ester includes acrylic acid ethyl ester. Of these, methacrylic acid methyl ester is most preferred. Preferred examples of the acrylic ester graft copolymer include graft copolymers of butadiene rubber, acrylic rubber, or styrene / butadiene rubber in the form of a mixture of monomers of methacrylate methyl ester with styrene and acrylonitrile. Most preferably graft copolymers of methacrylic acid methylester, styrene and acrylonitrile are effective.

The content of the adhesion enhancer is preferably 8 to 30% by weight, more preferably 10 to 20% by weight of the total MMA waterproofing material composition. When the content of the adhesion improving agent is less than 8% by weight, the primer layer is not uniformly formed by weakening the miscibility of the (a) acrylic monomer mixture, (b) acrylic copolymer and (c) phosphorus-containing vinyl monomer. Along with this, problems may arise in that the adhesion between the base concrete and the asphalt is insignificant, and when it exceeds 30% by weight, the strength may be lowered by preventing the hardening of the waterproof layer, and it may be difficult to secure sufficient physical properties as the waterproof layer. have.

The (g) paraffin wax is added to prevent the drying of the waterproof layer, petroleum wax, polyethylene wax, paraffin wax or paraffin wax known in the art such as alcohol wax can be used, more preferably It is effective to use paraffin wax whose melting | fusing point is 50-70 degreeC measured based on JISK2235.

In addition, the content of paraffin wax is preferably included 1 to 10% by weight of the total weight of the MMA waterproof material composition. When the paraffin wax is more than 10% by weight, the miscibility of the waterproofing material composition may be reduced, so that formation of a uniform waterproofing material composition may be difficult, and thus adhesion and waterproofing properties may be reduced. It is effective because it prevents drying and effectively improves the adhesion between the waterproof layer and the asphalt layer.

In the present invention, the MMA waterproofing material composition may be mixed with a polymerization initiator, and when the polymerization initiator is mixed, the MMA waterproofing material may be cured while polymerizing. The polymerization initiator may use a radical polymerization initiator selected from peroxides, and more specifically, organic peroxides may be used, and ketone peroxides and diacyl peroxides are preferable examples. Hydroperoxides, dialper peroxides, peroxy tars and the like, there may be used benzol peroxide as a preferred example, it may be used alone or in combination.

The polymerization initiator is preferably used by mixing 1 to 20 parts by weight based on 100 parts by weight of the total MMA waterproofing material composition. When the content of the polymerization initiator is less than 1 part by weight, the reaction of the MMA waterproof material composition may be too slow to sufficiently harden the waterproof layer. When the content of the polymerization initiator is more than 20 parts by weight, the waterproof layer may be uniformly started when the reaction of the MMA waterproof material composition is started too quickly. It may not be formed.

The MMA waterproofing material composition may be mixed with the polymerization initiator to be used in one-part form, and may be used in a two-part type to separately mix the polymerization initiator.

In addition, when the degree of breakage of the base concrete is severe, the durability of the road surface waterproofing composite layer may be improved by repairing the damaged part with superhard concrete and forming a waterproof layer. By using a mixture of calcium or silica sand, there is an advantage that can be waterproof and repair at the same time.

As described above, (a) a vinyl monomer containing (P) one or two or more monomer mixtures selected from the group of (meth) acrylic monomers, (b) acrylic copolymers, and (c) phosphorus (d) amines The waterproofing layer formed of the MMA waterproofing material composition comprising one or two or more polymerization accelerators selected from the group compounds or metal oxides, (e) crosslinking agents, (f) adhesion enhancing agents, and (g) paraffin wax is formed to have a thickness of 1 to 2 mm. It is preferable to be, and more preferably formed in a thickness of 1.2 to 1.8mm is effective in improving the waterproof characteristics and durability. When the thickness of the waterproof layer is less than 1mm, the waterproof property and strength may not be sufficiently realized, and thus, the waterproof surface composite layer may be easily cracked or cracked. When the thickness of the waterproof layer is greater than 2 mm, the base concrete layer and the asphalt layer may be formed. The weakening of the adhesive force may cause the waterproof layer to be pushed by the vehicle load after construction.

In addition, the construction method of the road surface waterproofing composite layer including the MMA waterproofing material composition of the present invention will be described in detail.

a) applying a primer;

b) 20 to 60% by weight of one or more monomer mixtures selected from the group of (meth) acrylic monomers, 30 to 70% by weight of acrylic copolymers, 0.01 to 5% by weight of vinyl monomer containing phosphorus (P), amine 0.1 to 15% by weight of one or two or more polymerization accelerators selected from the group compounds or metal oxides, 0.1 to 15% by weight of crosslinking agents, (f) 8 to 30% by weight of adhesion improving agents and (g) 1 to 10% by weight of paraffin wax. Applying an MMA waterproofing composition comprising a primer on top of the primer to form a waterproofing layer; And

c) applying the asphalt heated to 150 to 200 ℃ on the waterproof layer;

First, in order to improve the adhesion between the base concrete and the primer layer before step a), it is preferable to remove the adhesive inhibitor on the upper portion of the base concrete, and to clean the surface by removing the moisture by heating with a burner or the like when wet. . If there is moisture or adhesive inhibitors, the primer layer does not penetrate into the base concrete layer uniformly, and when the waterproof layer is formed, it may be lifted up. It is effective to include more. This can prevent lifting of the waterproof layer and can significantly improve the adhesion between the base concrete and the asphalt layer. The cemented carbide concrete used in the concrete planarization step may be used without limitation as long as it is well known in the art.

After purifying the surface of the substrate concrete, it is preferable to apply 0.3 to 0.4 kg of primer per m 2 to improve the adhesion between the substrate concrete and the waterproof layer.

Step b) is preferably applied to the MMA waterproof material composition 1 to 2mm thickness on the primer layer. By applying the MMA waterproofing material composition in the above temperature range, it can be firmly combined with the primer layer, thereby improving the adhesion between the base material concrete layer and the asphalt layer is effective.

In addition, the application of the MMA waterproofing material composition may use a manpower, equipment may be used, and can be applied by mixing a manpower and equipment as appropriate. Manpower construction is suitable in narrow places or difficult construction, and equipment construction is suitable in large places and difficult construction. In such a construction, since the above-mentioned MMA waterproofing material composition can be adjusted to a two-part type, curing time can be appropriately adjusted.

In addition, when the degree of breakage of the base concrete is severe, it is possible to improve the durability of the road surface waterproof composite layer by going through the concrete planarization step using the super-hard concrete described above. In addition, when the degree of breakage of the base concrete is insignificant, there is an advantage that water and repair can be performed at the same time by mixing a filler such as calcium carbonate or silica sand with the MMA waterproofing material composition. It can mix and apply suitably.

After the step b) may further comprise the step of spraying one or two or more selected from primary asphalt, modified oil, silica sand, solid asphalt, in order to improve the adhesion between the asphalt and the waterproof layer to be applied later effective. The primary asphalt to be applied, modifier emulsion, silica sand or solid asphalt may be used without limitation as long as it is obviously used in the art, and the solid asphalt includes granular asphalt.

After forming the waterproof layer, it is preferable to form a road surface waterproofing composite layer by applying asphalt heated to 150 to 200 ℃ on the waterproof layer in step c).

The asphalt is not limited as long as the asphalt is obviously used in the art, for example, modified asphalt, granular asphalt, granulated asphalt, and the like can be used.

When the asphalt in the heated state is applied, a part of the hardened waterproof layer melts and penetrates into the asphalt, thereby firmly bonding the waterproof layer and the asphalt layer, thereby improving waterproof properties and durability.

The road surface waterproofing composite layer including the MMA waterproofing material composition constructed according to the above construction method has a tensile adhesive strength of 0.6 to 2.0 N / mm 2 according to KS F4932 and a shear adhesive strength of 0.15 to 1.0 N / mm 2 according to KS F4932. It is desirable to satisfy the conditions.

The road surface waterproof composite layer is formed of MMA waterproof material composition, so the curing speed is fast and the construction is quick, and the waterproof layer is firmly formed together with the primer layer to prevent the penetration of moisture so that the asphalt layer of the road surface is cracked or cracked according to the vehicle load. It can be seen that the durability is significantly improved because it is not formed.

Hereinafter, the road surface waterproofing composite layer including the acrylic waterproofing agent composition of the present invention will be described in detail through Examples and Comparative Examples.

Property measurement

1) The tensile strength, elongation rate, shear adhesion strength, shear adhesion strain, tensile adhesion strength, water permeability, depression test, fatigue resistance and crack resistance were measured by the method of KS F4932, and the results are shown in Table 2 below. It was.

[Production Example 1]

(b) Acrylic Copolymer Preparation

0.15 parts by weight of azobisisobutyronitrile (AIBN), 200 parts by weight of water, based on 100 parts by weight of a monomer containing 60% by weight of methyl methacrylate, 20% by weight of ethyl acrylate, and 20% by weight of butyl acrylate. 0.84 parts by weight of a 5% polyvinyl alcohol solution (Kuraray Co., Ltd. POVAL PVA217) and 0.36 parts by weight of normal-octylmercaptan, followed by a suspension polymerization reaction at a reaction temperature of 80 ° C. for 90 minutes to remove residual monomers. Further polymerization was carried out at 15 ° C. for 15 minutes. The polymerized acrylic copolymer was washed with a dehydrator, dried in a drier for 24 hours, and analyzed by a thermal analyzer (DSC). The glass transition temperature was 45 ° C.

[Production Example 2]

(f) Adhesion Enhancer Preparation

100 parts by weight of a mixture containing 60% by weight of methacrylic acid methyl ester, 23% by weight of styrene, and 17% by weight of acrylonitrile in a reactor (a polymerization device) in which a stirring vessel is connected in series, 1,1-bis (which is a bifunctional group-containing initiator) 0.1 parts by weight of tertiarybutylperoxy) -3,3,5-trimethylcyclohexane and 5 parts by weight of toluene were continuously added to the first reactor and the second reactor with a stirrer. The reaction temperature and pressure of the first and second reactors were mass polymerization so as to convert the introduced monomers into polymers while maintaining 110 ° C. and a residence time of 8 hours in total. An adhesion improving agent was prepared by removing the unreacted monomer and the solvent while maintaining the temperature of 150 ° C. and a vacuum pressure of 550 torr in a volatilization tank having a heat exchanger.

Example 1

primer  Composition manufacturing

In a 1 liter four-necked flask equipped with an inert gas inlet, an air inlet, and a reflux condenser, 500 g of polytetramethylene glycol (PTMG) and 174 g of toluene diisocyanate (TDI) having a number average molecular weight of 1000 were placed, and 80 ° C under nitrogen stream. It was made to react for 4 hours, and it cooled to 50 degreeC. 0.07 g of hydroquinone was added under air stream, 130 g of 2-hydroxyethyl methacrylate (HEMA) was added, and it was made to react at 90 degreeC for 5 hours, and the urethane methacrylate resin composition (a) of the number average molecular weight 2000 was obtained.

As shown in Table 1 below, 70% by weight of the urethane (meth) acrylate resin (number average molecular weight 2000) prepared above, 5% by weight of hydroxyethyl methacrylate, based on the total amount of the entire primer composition in a 20 ° C room temperature stirrer, A primer composition was prepared by mixing 25% by weight of methyl methacrylate, 0.5% by weight of paraffin wax, 2% by weight of benzoyl peroxide, and 0.5% by weight of cobalt octanate and stirring to form a uniform solution.

MMA  Waterproofing material composition

While stirring the stirrer at 60 ° C., 30% by weight of methyl methacrylate and 15% by weight of butyl acrylate were added to the stirrer as a mixed monomer with respect to the total amount of the entire MMA waterproofing material composition. 38% by weight of the acrylic copolymer prepared in Preparation Example 1, 1.5% by weight of (bis (2-hydroxyethyl methacrylate) acid phosphate, 0.5% by weight of tri-n-butylamine, 1,4-butanedioldi 3% by weight of acrylate and 10% by weight of the adhesion improving agent prepared in Preparation Example 2 and 2% by weight of paraffin wax (ENT-450PW, ENT) were added to the stirrer and stirred to form a uniform solution, and the stirrer temperature was 25 ° C. The MMA waterproof material composition was prepared by mixing 3 parts by weight of benzoyl peroxide based on 100 parts by weight of the prepared uniform solution, and the prepared waterproof material composition and content are shown in Table 1 below.

Road waterproofing composite layer  Construction

Adhesion inhibitors of the base concrete were removed, water was removed, and then the primer composition was applied at 0.3 kg per 1 m 2, and cured for 30 minutes to form a primer layer. 1 mm of the MMA waterproofing material composition was applied on the primer layer, and cured for 30 minutes to form a waterproofing layer. Asphalt of 180 ° C. was placed on the waterproofing layer and cured to construct a road surface waterproofing composite layer.

[Examples 2 to 3]

As shown in Table 1, was carried out in the same manner as in Example 1 except for changing the content of (a), (b) and (f) component in the MMA waterproof material composition.

Example 4

The same procedure as in Example 1 was performed except that 2 kg per 1 m 2 of silica sand (F75, Kyungin material) was further sprayed on the waterproof layer.

Comparative Example 1

As shown in Table 1, it was carried out in the same manner as in Example 1 except that the primer layer was not formed.

[Comparative Example 2]

As shown in Table 1, was carried out in the same manner as in Example 1 except that (c) phosphorus-containing vinyl monomer, (f) adhesion enhancer and (g) paraffin wax in the MMA waterproofing composition.

[Table 1]

[Table 2]

As shown in Table 2, Examples 1 to 4 it can be seen that the overall physical properties such as tensile strength, elongation rate, tensile adhesive strength and shear adhesive strength compared to Comparative Examples 1 to 2.

Forming the primer layer and the waterproof layer together as in Examples 1 to 4 of the present invention is superior in tensile adhesive strength and shear adhesion strength than forming the waterproof layer alone without the primer layer as in Comparative Example 1 It can be seen that the adhesive strength of the asphalt layer is significantly improved, and it appears that there is no abnormality in water permeability and depression resistance, so that the durability is also improved, and as in Example 4, the silica layer It was found that the tensile strength and the adhesive strength were further improved by forming the adhesion promoting layer to be formed.

In addition, as in Comparative Example 2, it was found that when the adhesion monomer and the vinyl monomer containing phosphorus (P) were not used, the adhesion and durability were reduced.

Therefore, the present invention is to form a waterproof layer with a primer layer and MMA waterproofing material composition between the base concrete and asphalt, the adhesion and waterproof properties of the concrete layer and the asphalt layer is improved, the road surface waterproof composite layer that can be quickly cured at room temperature to be quickly installed Could be constructed.

In addition, by including an adhesion improving agent in the MMA waterproof material composition, it is possible to improve the flexibility of the waterproof layer, it was possible to prepare a MMA waterproof material composition that can improve the waterproof properties and durability by firmly bonding the base material concrete layer and the asphalt layer.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the above description should not be construed as limiting the scope of the present invention defined by the limits of the following claims.

Claims (15)

Base concrete layer;
A primer layer formed by applying a one-component or two-component primer composition comprising a (meth) acrylic resin and a curing agent on the base concrete layer;
A waterproof layer formed on the primer layer; And
And an asphalt layer formed on the waterproof layer.
The waterproof layer is a (a) (meth) acrylic monomer group, one or two or more monomer mixtures, (b) acrylic copolymers, (c) phosphorus (P) vinyl monomer, (d) amine compound Or an MMA waterproofing material composition comprising one or two or more polymerization promoters selected from metal oxides, (e) crosslinking agents, (f) adhesion enhancing agents, and (g) paraffin wax.
The vinyl monomer containing phosphorus (P) is diethyl allyl phosphate, hydroxyethyl methacrylate phosphate, hydroxyethyl acrylate phosphate, bis (2-hydroxyethyl methacrylate) acid phosphate, 2- Hydroxyethyl methacrylate phosphate and tris (2-hydroxyethyl methacrylate) phosphate
The (f) adhesion improving agent is a (C1-C8) methacrylic acid alkyl ester, (C1-C8) acrylic acid alkyl ester or 50-70 parts by weight of a mixture thereof and styrene, α-methylstyrene, halogen or alkyl substituted styrene or these A road surface waterproofing composite layer, which is an acrylic ester-based graft copolymer obtained by polymerizing a monomer mixture consisting of 5-40 parts by weight of a mixture and 10-30 parts by weight of acrylonitrile, methacrylonitrile or a mixture thereof.
delete The method of claim 1,
The primer layer is formed by applying 0.3 to 0.4kg per m 2, the thickness of the waterproof layer is a road surface waterproof composite layer is formed to 1 to 2mm. The method of claim 1,
A road surface waterproofing composite layer further comprising an adhesion promoting layer comprising one or two or more selected from primary asphalt, modified emulsion, silica sand, solid asphalt on the waterproof layer. The method of claim 1,
The road surface waterproofing composite layer has a tensile adhesive strength of 0.6 to 2.0 N / mm2 according to KS F4932, the shear adhesion strength of 0.15 to 1.0 N / mm2 according to KS F4932. The method of claim 1,
The MMA waterproof material composition is (A) 20 to 60% by weight of one or two or more monomer mixtures selected from the group of (meth) acrylic monomers, (b) 30 to 70% by weight of the acrylic copolymer, (c) phosphorus (P) 0.01 to 5% by weight of vinyl monomer, 0.1 to 15% by weight of one or two or more types of polymerization promoters selected from (d) amine compounds or metal oxides, (e) 0.1 to 15% by weight of crosslinking agents, (f) A road surface waterproofing composite layer comprising 8 to 30% by weight of an adhesion improving agent and 1 to 10% by weight of paraffin wax. The method according to claim 6,
The acrylic copolymer (b) is 20 to 80% by weight of methyl methacrylate and one or two or more copolymerizable comonomers selected from methacrylate monomer, acrylate monomer, methacrylic acid or acrylic acid. It is an acrylic copolymer copolymerized at 70% by weight,
The methacrylate monomer is ethyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, lauryl methacrylate, 2-ethylhexyl methacrylate, stearyl meth Acrylate, isodecyl methacrylate, benzyl methacrylate, tetrahydroperfuryl methacrylate, phenoxy methacrylate,
The acrylate-based monomer is methyl acrylate, ethyl acrylate, n-butyl acrylate, t- butyl acrylate, 2-ethylhexyl acrylate, caprolactone acrylate, stearyl acrylate road surface waterproof composite layer.
delete delete The method according to claim 6,
The MMA waterproof material composition is a road surface waterproofing composite layer containing calcium carbonate or silica sand. a) applying a primer;
b) 20 to 60% by weight of one or two or more monomer mixtures selected from the group of (a) (meth) acrylic monomers, (b) 30 to 70% by weight of the acrylic copolymer, and (c) phosphorus (P) 0.01 to 5% by weight of vinyl monomer, (d) 0.1 to 15% by weight of one or two or more types of polymerization accelerators selected from amine compounds or metal oxides, (e) 0.1 to 15% by weight of crosslinking agents, and (f) adhesion improving agents 8 Forming an waterproofing layer by applying an MMA waterproofing composition comprising 30 wt% to (g) 1 to 10 wt% of paraffin wax on the primer; And
and c) applying asphalt heated to 150 to 200 ° C. on the waterproof layer.
The vinyl monomer containing (c) phosphorus (P) in the MMA waterproofing composition is diethyl allyl phosphate, hydroxyethyl methacrylate phosphate, hydroxyethyl acrylate phosphate, bis (2-hydroxyethyl methacrylate). 1 or 2 selected from acid phosphate, 2-hydroxyethyl methacrylate phosphate, and tris (2-hydroxyethyl methacrylate) acid phosphate,
The (f) adhesion improving agent is a (C1-C8) methacrylic acid alkyl ester, (C1-C8) acrylic acid alkyl ester or 50-70 parts by weight of a mixture thereof and styrene, α-methylstyrene, halogen or alkyl substituted styrene or these A method of constructing a road surface waterproofing composite layer, which is an acrylic ester-based graft copolymer obtained by polymerizing a monomer mixture composed of 5-40 parts by weight of a mixture and 10-30 parts by weight of acrylonitrile, methacrylonitrile or a mixture thereof. 12. The method of claim 11,
The primer layer is formed by applying 0.3 to 0.4kg per m 2, the waterproof layer is a construction method of the road surface waterproofing composite layer formed to a thickness of 1 to 2mm. 12. The method of claim 11,
The method of claim 1, further comprising the step of purifying the surface of the upper surface of the base concrete and filling the purified concrete surface with cemented carbide concrete, further comprising the leveling of concrete. 12. The method of claim 11,
After the step b) further comprising the step of spraying one or two or more selected from primary asphalt, modified emulsion, silica sand, solid asphalt. 12. The method of claim 11,
The method of applying the MMA waterproofing material composition in step b) is the construction of a road surface waterproofing composite layer that is applied by mixing a manpower, equipment or a mixture thereof.