WO2016182177A1 - Asphalt concrete composition having waterproof function and construction method using same - Google Patents

Abstract

The present invention provides an asphalt concrete composition and a construction method using the same, wherein the composition contains, on the basis of 100 parts by weight of asphalt, 50-1,000 parts by weight of aggregate; 10-80 parts by weight of a polymer resin; 20-50 parts by weight of a cross-linked polyacrylate salt; 30-60 parts by weight of a binder resin; 10-50 parts by weight of silica; 2-30 parts by weight of a curing agent; 10-50 parts by weight of an anti-deformation agent; 5-30 parts by weight of an anti-peeling agent; 3-20 parts by weight of an anti-oxidant; and 2-15 parts by weight of a filler. The asphalt concrete composition according to the present invention does not easily cause plastic deformation, aging, and/or peeling, and can prevent infiltrating water and portholes, reduce noise, and perform road pavement at low costs.

Description

Asphalt concrete composition with waterproof function and construction method using the same

The present invention relates to an asphalt concrete composition and a construction method using the same, and more particularly, to an asphalt concrete composition having a waterproof function and a construction method using the same.

Asphalt concrete is generally manufactured by mixing asphalt binder, thick aggregate, aggregate, sand, and filler at high temperature, and is widely used as a road paving material. Also abbreviated as ascon.

In particular, ascon road paving method using asphalt concrete has been mainly used as a general road paving method.

However, the above-mentioned asphalt concrete pavement, in particular asphalt concrete pavement, sometimes occurs in plastic deformation along the running track before 5 years after construction, causing serious driving problems or paving with the passage of time even if there is no plastic deformation problem. As the material gradually ages and eventually generates severe cracks, there is a problem that periodic maintenance is required. As an example of such a repair method, Korean Patent Registration No. 0880030 includes 60 to 80% by weight of asphalt cement; 15 to 35% by weight of vegetable oils, and an ascon composition for road pavement emergency repair comprising a binder, characterized in that it comprises aliphatic polyamides (Aliphatic polyamides).

Accordingly, in order to minimize the cost of the maintenance, it is required to minimize the plastic deformation of the road paved using asphalt concrete, and to develop an asphalt concrete composition that does not easily peel off without aging for a long time.

As a result, the asphalt concrete loses adhesion due to such physical property degradation, and heat is generated.

Due to the above process, when moisture enters between cracks generated between asphalt concrete, oxidation progresses. When radiant heat passes through the stale space of asphalt concrete, corrosion process of asphalt concrete proceeds rapidly. When exposed to calcium chloride used for melting, or when exposed to moisture for a long time during the rainy season during the summer, there is a problem that a port hole is rapidly generated in the asphalt concrete to increase the occurrence of traffic accidents due to unevenness of the road surface.

The present invention has been made to overcome the above-mentioned problems, and can prevent infiltration water and port holes, reduce noise, and perform road pavement at low cost without plastic deformation, aging and / or peeling easily occurring. To provide an asphalt concrete composition, specifically an asphalt concrete composition having a waterproof function and a construction method using the same.

The present invention is based on 100 parts by weight of asphalt, 120 parts by weight of aggregate; 49 to 70% by weight of a low viscosity methyl methacrylate (MMA) resin having a viscosity of 10 to 1,000 cps as a polymer resin, 20 to 50% by weight of a high viscosity methyl methacrylate (MMA) having a viscosity of 2,000 to 20,000 cps, and SIS ( 50 parts by weight of modified methyl methacrylate resin, in which one or more selected from the group consisting of stylene isoprene stylene (SBR), SBR (stylene butadiene rubber) and SBS (stylene butadiene stylene); 30 parts by weight of crosslinked polyacrylate salt; 50 parts by weight of propanediol as a binder resin; 25 parts by weight of silica sand; 15 parts by weight of 4-4 diphenylmethane diisocyanate as a curing agent; 25 parts by weight of ethylene vinyl acetate as a deformation inhibitor; 15 parts by weight of a polyphosphoric acid anti-peeling agent having a specific gravity of 1.0 or more and a viscosity of 110 cPs of 60 ° C; 10 parts by weight of monophenol antioxidant; And 8 parts by weight of silica as a filler, further comprising polyethylene wax as 3 parts by weight based on 100 parts by weight of asphalt, and a rheological alkyd resin and a coconut oil bio resin consisting of a weight ratio of 8: 2. It provides an asphalt concrete composition further comprises 10 parts by weight based on parts by weight.

In addition, the present invention, the first tack coating step of tack coating the planarized asphalt surface; 120 parts by weight of aggregate, based on 100 parts by weight of asphalt on the surface of the first tack coating, 49 to 70% by weight of low viscosity methyl methacrylate (MMA) resin having a viscosity of 10 to 1,000 cps as a polymer resin, viscosity 20 to 50 wt% of high viscosity methyl methacrylate (MMA) having 2,000 to 20,000 cps, and 1 to 10 wt% of at least one selected from stylene isoprene stylene (SIS), stylene butadiene rubber (SBR) and stylene butadiene stylene (SBS). 50 parts by weight of modified methyl methacrylate resin, 30 parts by weight of crosslinked polyacrylate salt, 50 parts by weight of propanediol as binder resin, 25 parts by weight of silica sand, 15 parts by weight of 4-4 diphenylmethane diisocyanate as curing agent 25 parts by weight of ethylene vinyl acetate as a strain inhibitor, 15 parts by weight of a polyphosphoric acid peeling inhibitor having a specific gravity of 1.0 or more and a viscosity of 110 cPs at 60 ° C, 10 parts by weight of a monophenolic antioxidant, and a filler as a filler Asphalt concrete composition comprising 8 parts by weight of car, further comprising 3 parts by weight of polyethylene wax based on 100 parts by weight of asphalt, based on 100 parts by weight of bio resin composed of a weight ratio of 8: 2 rheological alkyd resin and coconut oil A first base layer forming step of laying the asphalt concrete composition further comprising 10 parts by weight to a thickness of 20 to 100 millimeters; A second tack coat treatment step of tack coating the surface of the first base layer formed through the first base layer forming step; A second base layer forming step of laying the asphalt concrete composition of the first base layer forming step to a thickness of 10 to 80 millimeters on the surface of the asphalt which has undergone the second tag coating treatment step; And it provides a construction method of asphalt concrete composition comprising a curing step of curing the asphalt concrete composition having a waterproof function installed through the first base layer forming step and the second base layer forming step.

Asphalt concrete composition according to the present invention, the asphalt concrete composition with a particularly waterproof function is to prevent the infiltration water and port holes, reduce noise, road at low cost without plastic deformation, aging and / or peeling easily occurs Allow packaging to take place.

Hereinafter, the present invention will be described in detail.

In one aspect, the present invention, based on 100 parts by weight of asphalt, aggregate 50 to 1,000 parts by weight; 10 to 80 parts by weight of the polymer resin; 20 to 50 parts by weight of crosslinked polyacrylate salt; 30 to 60 parts by weight of the binder resin; 10 to 50 parts by weight of silica sand; 2 to 30 parts by weight of a curing agent; 10 to 50 parts by weight of a strain inhibitor; 5 to 30 parts by weight of a peeling inhibitor; 3 to 20 parts by weight of antioxidant; And it provides an asphalt concrete composition comprising 2 to 15 parts by weight of the filler.

In another aspect, the present invention comprises a first tack coating step of tack coating the planarized asphalt surface; 50 to 1,000 parts by weight of aggregate, 10 to 80 parts by weight of polymer resin, 20 to 50 parts by weight of crosslinked polyacrylate salt, and 30 to 60 binder resin, based on 100 parts by weight of asphalt on the surface of the first taco-coated asphalt. Part by weight, 10 to 50 parts by weight of silica sand, 2 to 30 parts by weight of the curing agent, 10 to 50 parts by weight of the deformation inhibitor, 5 to 30 parts by weight of the peeling inhibitor, 3 to 20 parts by weight of the antioxidant, and 2 to 15 parts by weight of the filler A first base layer forming step of laying the asphalt concrete composition to a thickness of 20 to 100 millimeters; A second tack coat treatment step of tack coating the surface of the first base layer formed through the first base layer forming step; A second base layer forming step of laying the asphalt concrete composition of the first base layer forming step to a thickness of 10 to 80 millimeters on the surface of the asphalt which has undergone the second tag coating treatment step; And it provides a construction method of asphalt concrete composition comprising a curing step of curing the asphalt concrete composition having a waterproof function installed through the first base layer forming step and the second base layer forming step.

Asphalt according to the present invention is not particularly limited as long as it is asphalt commonly used in the art, particularly petroleum-based asphalt.

The content of the remaining components other than asphalt constituting the asphalt concrete composition according to the present invention is based on 100 parts by weight of asphalt.

Aggregate according to the present invention is to improve the stability and durability of the asphalt concrete composition, and may be used as long as it is a conventional aggregate in the art having this purpose, preferably stone, gravel, sand, silica or It is preferable to use at least one mixture selected from them.

Here, limestone, basalt, dolomite, sandstone, granite and quartzite may be used as the stone.

In addition, the aggregate is preferably used to remove the deposit, it is more preferable to use that meets the specifications of KSF2357, the particle size of the aggregate is recommended to have a 2 to 20 millimeters, but is not limited thereto. Instead, the size can be adjusted according to the user's choice.

The amount of the preferred aggregate is preferably 50 to 1,000 parts by weight based on 100 parts by weight of asphalt.

The polymer resin according to the present invention is to suppress the occurrence of cracks in the asphalt concrete composition, to provide a waterproofing performance and to improve the strength, and is not particularly limited as long as it is a polymer resin having such a purpose, but is preferably polyester. , A polymer resin composed of at least one thermoplastic polyurethane elastomer (TPU), methyl methacrylate (MMA: Methyl Meth Acrylate), ethylene vinyl acetate copolymer (EVA), polyamide or at least one mixture thereof Good to do.

At this time, the content of the polymer resin is not particularly limited, but preferably 10 to 80 parts by weight based on 100 parts by weight of asphalt contained in the asphalt concrete composition.

As the preferred polymer resin, it is recommended to use methyl methacrylate (MMA: Methyl Meth Acrylate).

The methyl methacrylate has excellent adhesion to asphalt and concrete roads, and maintains excellent binder and mechanical properties to significantly improve cracking and dropping due to continuous loads generated on top of asphalt concrete.

In a particular embodiment, the methylmethacrylate according to the present invention comprises 49 to 70% by weight of a low viscosity methyl methacrylate (MMA) resin having a viscosity of 10 to 1,000 cps, and a high viscosity methyl methacrylate having a viscosity of 2,000 to 20,000 cps ( MMA) 20 to 50% by weight of the methyl methacrylate mixture obtained by mixing 1 to 10% by weight of one or more mixtures selected from SIS (stylene isoprene stylene), SBR (stylene butadiene rubber), SBS (stylene butadiene stylene) Modified methyl methacrylate can also be used.

In this case, when the content of the SIS, SBR and / or SBS is less than 1% by weight, cracks may occur due to a decrease in impact resistance, and when the content of the SIS, SBR and / or SBS is greater than 10% by weight, the work may be due to an increase in viscosity of the modified methyl methacrylate resin. Problems may occur, and the physical properties may become soft, which is undesirable because the load of pedestrians or bicycles may result in deterioration of sliding resistance due to the pressing of products such as wheel marks on the surface.

The crosslinked polyacrylate salt according to the present invention is included in the asphalt concrete composition to absorb water and expand, thereby filling the asphalt concrete voids and preventing water penetration, and thus is a conventional crosslinked polyacryl in the art having this purpose. Although any salt may be used, it is preferable to use a copolymer of acrylic acid and sodium acrylate containing acrylic acid, and the amount thereof is 20 to 50 based on 100 parts by weight of asphalt. It is good that it is a weight part.

The binder resin according to the present invention is for improving the bonding force between the asphalt concrete composition.

Although the preferable binder resin is not specifically limited, It is recommended to use propanediol, a propane triol, toluene diisocyanate, or a mixture thereof, and it is recommended that the usage-amount is 30-60 weight part based on 100 weight part of asphalt.

The silica sand according to the present invention may be any silica sand commonly used in the art, but it is preferable to use silica sand 2, silica sand 3 or silica sand 6, and the amount of silica is 100 parts by weight of asphalt. It is good that it is 10 to 50 parts by weight on the basis.

The curing agent according to the present invention is for curing the asphalt concrete composition, and any conventional curing agent having such a purpose may be used, but preferably 4.4-diphenylmethane diisocyanate (MDI), nucleomethylenetetramine, It is preferable to use amines, polyamides, or mixtures thereof, and the amount thereof is preferably 2 to 30 parts by weight based on 100 parts by weight of asphalt.

In certain embodiments, the curing agent according to the present invention may further comprise a low shrinkage agent.

In such a case, it is recommended to use the low shrinkage agent within a range of not more than 30% by weight based on the total weight of the curing agent.

As the preferred low shrinkage agent, it is recommended to use an unsaturated polyester low shrinkage agent, for example, a low shrinkage agent made of an unsaturated polyester resin.

The antistrain agent according to the present invention is for reducing the plastic deformation of the asphalt concrete composition.

It is recommended that the anti-strain agent include polyethylene, ethylene vinyl acetate, polybutene, high-impact polystyrene, polypropylene, or a mixture thereof, and the amount of the anti-strain agent is 10 to 50 parts by weight based on 100 parts by weight of asphalt.

At this time, when the amount of the anti-strain agent is less than 10 parts by weight, the effect of preventing deformation is insignificant, and when it exceeds 50 parts by weight, there is a problem in that mixing with other components is not easy when producing asphalt concrete.

The anti-peeling agent according to the present invention is for preventing the asphalt concrete composition from being easily peeled off from the pavement surface, and any anti-peeling agent having such a purpose may be used, but preferably, polyphosphoric acid, amine, or It is preferable to use a phosphate ester anti-peeling agent.

Specifically, the anti-peeling agent is a liquid-type polyphosphoric anti-peeling agent having a specific gravity of 1.0 or more and a viscosity of 110 cPs of 60 ° C; It may be an amine-based anti-peeling agent having an acid value of 10 mgKOH / g or less and a total amine value of 140 to 400 mgHCl / g.

It is recommended that the preferred amount of the anti-peeling agent is 5 to 30 parts by weight based on 100 parts by weight of asphalt.

The antioxidant according to the invention is for preventing the oxidation of the asphalt concrete composition.

Preferred antioxidants may be used amine-based, bisphenol-based, monophenol-based and sulfur-based antioxidants, the amount is preferably 3 to 20 parts by weight based on 100 parts by weight of asphalt.

The filler according to the present invention is for improving dimensional stability and wear resistance, and any filler may be used as long as the filler has this purpose, and the amount thereof is preferably 2 to 15 parts by weight based on 100 parts by weight of asphalt.

Here, when the amount of the filler is less than 2 parts by weight, the dimensional stability and wear resistance and thixotropic degradation are reduced, resulting in a decrease in durability, and when the amount exceeds 15 parts by weight, the workability decreases and the impact resistance decreases due to the increase in the nitrogen. It is not preferable because it causes the influence of the back.

As the preferred filler, one or more selected from benton, silica, calcium carbonate, talc, barium sulfate and aluminum hydroxide can be used.

As a specific aspect, the asphalt concrete composition according to the present invention may further include 2 to 5 parts by weight of wax based on 100 parts by weight of asphalt to prevent the surface tacky of the dry layer to prevent surface contamination due to traffic. have.

Preferred waxes are polyethylene wax or polypropylene wax or mixtures thereof.

In another particular aspect, the asphalt concrete composition according to the present invention may further comprise waste asphalt concrete (waste ascon).

The waste ascon is mainly used when the ascon conventionally used for packaging is replaced by aging or broken, it is recommended that the amount is 50 to 150 parts by weight based on 100 parts by weight of asphalt.

Here, when the waste ascon is added to the ascon composition to form a new ascon composition, an ascon performance improving agent may be further added to improve the function of the waste ascon having a reduced function.

The ascon performance improver may be any performance improver commonly used in the art, specifically, ascon performance improver, and any amount may be used in an amount of 5 to 30 parts by weight based on 100 weight of used ascon.

Preferred performance improvers include 90% to 99.5% by weight of vinyl acetate monomer-paraffin oil and 0.5 to 10% by weight of benzoyl peroxide based on the total weight of the performance improver.

Here, the vinyl acetate monomer-paraffin oil is preferably used is a mixture of 5 to 25% by weight of vinyl acetate monomer and 75 to 95% by weight of paraffin oil.

In another specific embodiment, the ascon composition according to the present invention may further include a polymer modifier.

Herein, the polymer modifier may be any polymer modifier commonly used in the art, and the amount of the polymer modifier is 2 to 40 parts by weight based on 100 parts by weight of asphalt.

In one embodiment of the polymer modifier, in the present invention, it is preferable to use a modifier including a polymer resin selected from the group consisting of styrene butadiene styrene, raw rubber, styrene isoprene styrene, nitrile rubber, styrene butadiene rubber, butadiene rubber and mixtures thereof. .

In another specific embodiment, the asphalt concrete composition according to the present invention may further include 5 to 20 parts by weight of bio resin based on 100 parts by weight of asphalt in order to suppress cracking and improve adhesion and durability.

Preferred bio resins are those consisting of rheology alkyd resins, rheology urethane resins, fatty acid esters of rheology urethane resins, rheology epoxy resins, fatty acid esters of rheology epoxy resins, bio polyethylene resins, L-polylactic acid or mixtures thereof. It is better to use, and it is recommended to use a rheology alkyd resin.

Here, the rheology refers to a resin containing an oil component such as a fatty acid in a molecule, and when such a rheology resin is used, it is easy to control dispersibility, mechanical properties, curability, and film formability.

In a particular embodiment, the bio resin is a vegetable oil, for example an oil extracted from a plant or plant seed, which is rice oil, palm oil, coconut oil, castor oil, grape seed oil, jojoba oil, safflower oil, macadamia nuts It can be used in combination with oils, olive seed oils, and mixed oils thereof.

In this case, the mixing ratio of the bio resin and the vegetable oil may be changed according to a user's selection, but it is recommended that the weight ratio of the bio resin and the vegetable oil be 1: 9 to 9: 1.

In another specific embodiment, the ascon composition according to the present invention may further include a plasticizer to reduce the viscosity at a high temperature of about 80 ° C. or more and to smoothly mix the components constituting the asphalt concrete composition.

Preferred plasticizers are preferably selected from the group consisting of terephthalic acid metal salts, stearic acid metal salts, petroleum resins, low molecular weight polyethylene and low molecular weight polyamides, and their amount is preferably 1 to 20 parts by weight based on 100 parts by weight of asphalt.

Here, if the amount of the plasticizer is less than 1 part by weight, the effect is not effective. If it exceeds 20 parts by weight, the viscosity is lowered, and thus the plastic deformation resistance is weakened.

In another particular embodiment, the asphalt concrete composition according to the present invention may further comprise a dispersant.

In this case, the dispersant imparts a polarity to the entire asphalt concrete composition to improve the adhesion to the components constituting the asphalt concrete composition, specifically aggregate, uniformly disperse the compounds, to perform the function of improving the cold resistance As a dispersant having such a purpose, any dispersant may be used, but preferably those selected from the group consisting of organic acids, aromatic oils, aliphatic oils, copper and vegetable oils, castor oil, cottonseed oil, mineral oil and mixtures thereof are used. It is good.

The amount of the preferred dispersant is preferably 0.1 to 10 parts by weight based on 100 parts by weight of asphalt.

At this time, if the amount of the dispersant is less than 0.1 parts by weight, there is almost no effect. If the amount of the dispersant is more than 10 parts by weight, there is a disadvantage that it does not develop any strength even at room temperature.

In another particular embodiment, the asphalt concrete composition according to the present invention may further comprise a fiber.

Here, the fiber is to improve the tensile force due to the stress applied in the longitudinal-lateral direction of the pavement surface formed of the asphalt concrete composition according to the present invention, a fiber having such a purpose, for example cellulose fiber, preferably natural It is preferable to use cellulose fibers, and the amount thereof is preferably 5 to 10 parts by weight based on 100 parts by weight of asphalt.

When the content of the cellulose fiber is less than 5 parts by weight, the effect of improving the tensile strength is lowered. When the content of the cellulose fiber is more than 10 parts by weight, the effect of improving the tensile strength is excellent, but the viscosity of the ascon composition is sharply increased so that the construction viscosity becomes too high. not.

In another specific embodiment, the asphalt concrete composition according to the present invention may further include 2 to 30 parts by weight of the filler based on 100 parts by weight of the asphalt.

The filler material improves the pore filling properties, stability, wear resistance and flow resistance of the asphalt concrete composition having a waterproof function according to the present invention, and consequently serves to improve Marshall stability.

Preferred fillers are preferably those consisting of at least one selected from the group consisting of lime powder, portland cement, slaked lime, fly ash, recovered dust, furnace steelmaking dust, foundry dust and incineration ash.

Referring to the construction method of the asphalt concrete composition, specifically the asphalt concrete composition having a waterproof function having such a configuration as follows.

Here, the construction method of the asphalt concrete composition is not particularly limited, but preferably a first tack coating step of tack coating the flattened asphalt surface;

50 to 1,000 parts by weight of aggregate, 10 to 80 parts by weight of polymer resin, 20 to 50 parts by weight of crosslinked polyacrylate salt, and 30 to 60 binder resin, based on 100 parts by weight of asphalt on the surface of the first taco-coated asphalt. Part by weight, 10 to 50 parts by weight of silica sand, 2 to 30 parts by weight of the curing agent, 10 to 50 parts by weight of the deformation inhibitor, 5 to 30 parts by weight of the peeling inhibitor, 3 to 20 parts by weight of the antioxidant, and 2 to 15 parts by weight of the filler A first base layer forming step of laying the asphalt concrete composition to a thickness of 20 to 100 millimeters; A second tack coat treatment step of tack coating the surface of the first base layer formed through the first base layer forming step; A second base layer forming step of laying the asphalt concrete composition of the first base layer forming step to a thickness of 10 to 80 millimeters on the surface of the asphalt which has undergone the second tag coating treatment step; And a curing step of curing the asphalt concrete composition having a waterproof function installed through the first base forming step and the second base forming step.

Here, the tack coat is made of asphalt, purified water and an emulsifier, it is preferable that 30 to 50 parts by weight of purified water and 1 to 5 parts by weight of an emulsifier are included with respect to 100 parts by weight of asphalt.

Hereinafter, the present invention will be described in detail through examples. However, the following examples are only for illustrating the present invention in detail and are not intended to limit the scope of the present invention by these examples.

Example 1

100 g of asphalt AP-3, petroleum-based asphalt, 120 g of stone with an average particle size of 10 mm, 50 g of methyl methacrylate, 30 g of crosslinked polyacrylate salt, 50 g of propanediol, 25 g of silica sand, 15 g of 4.4-diphenylmethane diisocyanate, ethylene vinyl Asphalt concrete composition was prepared by mixing 25 g of a strain inhibitor made of acetate, a specific gravity of 1.0 or more, and a polyphosphoric acid peeling inhibitor having a viscosity of 110 cPs of 60 ° C., 15 g, a monophenolic antioxidant 10 g, and 8 g of silica as a filler.

Example 2

The process was carried out in the same manner as in Example 1, except that instead of 15 g of 4.4-diphenylmethane diisocyanate, a curing agent including 12 g of 4.4-diphenylmethane diisocyanate and 3 g of a low shrinkage agent made of unsaturated polyester resin was used.

Example 3

It carried out in the same manner as in Example 1, it was carried out by further including 3g of polyethylene wax.

Example 4

It carried out in the same manner as in Example 1, it was carried out by further containing 70g of waste ascon.

Example 5

The method was carried out in the same manner as in Example 4, but was further performed by further including ascon performance improver in which 13.5 g of vinyl acetate monomer-paraffin oil and 1.5 g of benzoyl peroxide were mixed.

Example 6

It carried out in the same manner as in Example 4, it was carried out by further comprising 20g of a polymer modifier containing styrene butadiene styrene.

Example 7

It carried out in the same manner as in Example 1, it was carried out by further comprising 10g of a rheology alkyd resin.

Example 8

The same procedure as in Example 1 was carried out, but further including 8 g of a rheology alkyd resin and 2 g of coconut oil.

Example 9

It carried out in the same manner as in Example 1, it was carried out by further comprising 10g of stearic acid metal salt.

Example 10

The same procedure as in Example 1 was carried out, except that 8 g of natural cellulose fiber was further included.

Example 11

It carried out in the same manner as in Example 1, further comprising 15g of Portland cement to prepare an asphalt concrete composition.

Comparative Example 1

The same procedure as in Example 1 was carried out except for 50 g of methyl methacrylate.

Comparative Example 2

It was carried out in the same manner as in Example 1 except for 25g of a strain inhibitor consisting of ethylene vinyl acetate.

Comparative Example 3

The same procedure as in Example 1 was carried out except that 15 g of a polyphosphoric acid anti-peeling agent having a specific gravity of 1.0 or more and a viscosity of 110 ° C. was 60 cPs.

[Experiment]

Waterproofing performance, water immersion residue stability (KS F 2369), Marshall stability, and indirect tensile strength of the asphalt concrete composition prepared according to Examples and Comparative Examples were measured and shown in the following Tables 1-3.

Waterproof performance

	Waterproof performance (%)
Example 1	96
Example 2	96
Example 3	97
Example 4	97
Example 5	96
Example 6	97
Example 7	99
Example 8	99
Example 9	96
Example 10	97
Example 11	99
Comparative Example 1	75
Comparative Example 2	86
Comparative Example 3	86

Immersion Residual Stability

	Immersion Residual Stability (%)
	Stability before immersion (N)	Stability after immersion (N)	Residual Stability (%)
Example 1	19682.0	14585.0	82
Example 2	19982.0	15483.0	84
Example 3	19692.0	14672.0	82
Example 4	19952.0	15665.0	86
Example 5	19634.0	14535.0	84
Example 6	19686.0	14545.0	83
Example 7	19794.0	14643.0	81
Example 8	19586.0	14452.0	84
Example 9	19822.0	14653.0	83
Example 10	19219.0	14632.0	84
Example 11	19721.0	14553.0	83
Comparative Example 1	19792.0	12324.0	66
Comparative Example 2	19892.0	12138.0	65
Comparative Example 3	19682.0	13265.0	62

Marshall Stability

	Marshall stability (N)
	Curing period (hours)
	3	5	7	10	20	48
Example 1	3356	6664	14155	19863	28945	38832
Example 2	3121	6845	14163	21893	29547	39851
Example 3	3313	6547	14165	19993	28945	38822
Example 4	3412	6545	15176	20893	30431	39732
Example 5	3111	6451	14563	19893	28935	36832
Example 6	3212	6234	14163	19453	28946	38723
Example 7	3293	6546	14316	19323	28348	38351
Example 8	3253	6685	14168	19933	29665	38543
Example 9	3323	6643	14165	19892	29545	33765
Example 10	3363	6745	14133	19703	27948	38712
Example 11	3423	6742	14865	19894	29845	39965
Comparative Example 1	2122	5242	12144	14581	22934	30546
Comparative Example 2	2114	5332	12498	15469	23678	30542
Comparative Example 3	2311	5432	12698	15989	24698	31972

Indirect tensile strength

	Indirect tensile strength (MPa)
	Curing period (hours)
	3	5	7	10	20	48
Example 1	0.043	0.098	0.278	0.829	1.083	1.284
Example 2	0.049	0.102	0.312	0.989	1.383	1.562
Example 3	0.047	0.095	0.279	0.843	1.101	1.283
Example 4	0.047	0.122	0.352	0.987	1.383	1.622
Example 5	0.042	0.097	0.284	0.823	1.201	1.293
Example 6	0.043	0.095	0.254	0.877	1.011	1.298
Example 7	0.041	0.094	0.268	0.823	1.123	1.184
Example 8	0.042	0.097	0.283	0.817	1.001	1.123
Example 9	0.042	0.093	0.292	0.876	1.092	1.283
Example 10	0.041	0.091	0.267	0.819	1.086	1.182
Example 11	0.044	0.098	0.297	0.819	1.394	1.791
Comparative Example 1	0.004	0.012	0.185	0.643	0.831	1.097
Comparative Example 2	0.004	0.014	0.198	0.688	0.823	1.293
Comparative Example 3	0.005	0.016	0.210	0.712	0.989	1.099

As shown in Tables 1 to 4, the waterproof performance is good compared to the comparative examples, and even after immersion showed stability of 14000N or more, and as time passes, the stability of the Marshall was increased and the tensile value was high.

The present invention relates to a high grade asphalt composition and a construction method using the same, and is used for paving roads, highways, highways, as well as general roads.

Claims (5)

1. Based on 100 parts by weight of asphalt,

   Aggregate 50 to 1,000 parts by weight;

   49 to 70% by weight of low viscosity methyl methacrylate (MMA) resin having a viscosity of 10 to 1,000 cps, 20 to 50% by weight of high viscosity methyl methacrylate (MMA) having a viscosity of 2,000 to 20,000 cps, and stylene isoprenestylene (SIS) 10 to 80 parts by weight of a polymer resin made of a modified methyl methacrylate resin in which at least one selected from SBR (stylene butadiene rubber) and SBS (stylene butadiene stylene) in an amount of 1 to 10% by weight;

   20 to 50 parts by weight of crosslinked polyacrylate salt;

   30 to 60 parts by weight of the binder resin;

   10 to 50 parts by weight of silica sand;

   2 to 30 parts by weight of a curing agent;

   10 to 50 parts by weight of a strain inhibitor;

   5 to 30 parts by weight of a peeling inhibitor;

   3 to 20 parts by weight of antioxidant;

   2 to 15 parts by weight of a filler;

   2 to 5 parts by weight of wax; And

   Asphalt concrete composition comprising 5 to 20 parts by weight of the bio-resin of the rheology alkyd resin and coconut oil in a weight ratio of 8: 2.
2. The method of claim 1,

   The polymer resin is asphalt concrete composition comprising at least one or more selected from polyester, thermoplastic polyurethane elastomer, methyl methacrylate, ethylene vinyl acetate copolymer, polyamide or these.
3. The method of claim 1,

   The strain inhibitor is polyethylene, ethylene vinyl acetate, polybutene, high impact polystyrene, polypropylene or mixtures thereof.
4. The method of claim 1,

   The peeling inhibitor is an asphalt concrete composition which is a polyphosphoric acid, amine-based, or phosphate ester-based peeling inhibitor.
5. A first tack coating step of tack coating the planarized asphalt surface;

   50 to 1,000 parts by weight of aggregate, 49 to 70% by weight of low viscosity methyl methacrylate (MMA) resin having a viscosity of 10 to 1,000 cps, based on 100 parts by weight of asphalt on the surface of the first tack coating 20 to 50 wt% of high viscosity methyl methacrylate (MMA) of 2,000 to 20,000 cps, and 1 to 10 wt% of at least one selected from stylene isoprenestylene (SIS), stylene butadiene rubber (SBR) and stylene butadiene stylene (SBS) 10 to 80 parts by weight of polymer resin composed of modified modified methyl methacrylate resin, 20 to 50 parts by weight of crosslinked polyacrylate salt, 30 to 60 parts by weight of binder resin, 10 to 50 parts by weight of silica sand, 2 to 30 parts by weight of curing agent 10 parts by weight to 50 parts by weight of anti-strain agent, 5 to 30 parts by weight of anti-peeling agent, 3 to 20 parts by weight of antioxidant, 2 to 15 parts by weight of filler, 2 to 5 parts by weight of wax; And a first base layer forming step of laying the asphalt concrete composition having a thickness of 20 to 100 millimeters, wherein the rheological alkyd resin and the coconut oil are 5 to 20 parts by weight of the bio resin having a weight ratio of 8: 2.

   A second tack coat treatment step of tack coating the surface of the first base layer formed through the first base layer forming step;

   A second base layer forming step of laying the asphalt concrete composition of the first base layer forming step to a thickness of 10 to 80 millimeters on the surface of the asphalt which has undergone the second tag coating treatment step; And

   Construction method of the asphalt concrete composition comprising a curing step of curing the asphalt concrete composition having a waterproof function installed through the first base layer forming step and the second base layer forming step.