KR101600846B1 - Emulsified Asphalt for Preventing Adhesion - Google Patents

Abstract

The present invention relates to an emulsified asphalt for preventing attachment and, more specifically, to an emulsified asphalt for preventing attachment, which does not use an anti-attaching agent or the like, is easily constructed, and can prevent attaching a tire or the like of machines and vehicles for moving ascon, thereby improving workability, reducing loss by attachment, and improving durability and construct ability of an asphalt pavement material.

Description

{Emulsified Asphalt for Preventing Adhesion}

The present invention relates to an emulsion asphalt for preventing adhesion, and more particularly, to an emulsion asphalt for preventing adhesion of asphalt concrete (hereinafter referred to as " asphalt concrete " To an asphalt emulsion for preventing adhesion.

The asphalt concrete pavement packed on the road for the movement of the vehicle is packed by mixing the asphalt and the aggregate with the adjusted granularity according to the use purpose. Such asphalt refers to a black or brownish semi-solid colloidal material remaining after a light portion is evaporated by a natural or artificial method among components constituting petroleum, and when it is heated, . ≪ / RTI >

Since the asphalt is excellent in adhesiveness and is excellent in adhesion with a mineral material, it is bonded to an aggregate with an adhesive material or an adhesive material, is water-insoluble and water-impermeable, has excellent waterproofness, The workability is also excellent.

Such an asphalt concrete pavement body is spread on the road surface and hardened in a smooth manner by using a roller for tamping work such as a road roller, a tire roller and the like.

The asphalt concrete pavement is formed as a multi-layered structure such as a roadbed, a base layer, and a surface layer. The asphalt concrete pavement is sprayed and applied to coat the flooring and the base layer or between the base layer and the surface layer, .

Also, in the case of aged asphalt concrete, a maintenance method for spraying maintenance-use asphalt on the top surface of the ascon is conducted for preventive maintenance in order to prolong its life.

The cutback asphalt is a product obtained by dissolving asphalt in an appropriate solvent, and is used only in special cases such as the winter season due to environmental problems and fire risk.

Therefore, the asphalt concrete pavement is usually packed by applying the emulsified asphalt. The emulsified asphalt is a mixture of water with a surfactant, asphalt, etc. to enhance the interlaminar adhesive strength of the multi-layered pavement so as to prevent delamination.

However, in the above-mentioned emulsified asphalt, the emulsified asphalt is deposited on the tires of the construction machine or the ascon transport vehicle to damage the coating layer, weakening the interlaminar adhesive strength, and causing the asphalt to adhere to the construction site.

Korean Unexamined Patent Publication No. 10-1247782, which was developed to solve the above problems, relates to an asphalt emulsion for preventing adhesion, which is an emulsified asphalt mixed with water, asphalt, a surfactant and an anti- (B) at least one selected from the group consisting of silica, silicate mineral, zeolite, calcium carbonate, titanium oxide, aluminum oxide, zinc oxide and magnesium oxide mixed with one or more of silica and an organopolysiloxane; (C) a mixture of one or more of kerosene, heavy oil and light oil and (D) a mixture of silica, silicate mineral, zeolite, calcium carbonate, titanium oxide, aluminum oxide, zinc oxide, magnesium oxide Or a mixture of two or more thereof.

However, Korean Patent Registration No. 10-1247782 mentioned above has a problem in that asphalt contains too much additives and is difficult to manufacture and difficult to manage.

The inventors of the present invention have confirmed that when the asphalt having a viscosity equal to or higher than a certain level is used and manufactured at an optimal blending ratio, the adhesion between the asphalt concrete layers is enhanced without the addition of the antifouling agent and adhesion to rollers, tires or the like is prevented , And emulsified asphalt with non - sticking function.

Korean Patent No. 1247782

It is a main object of the present invention to provide an asphaltic asphalt adhesive for preventing adhesion which is not easily lost by adhesion of a construction machine, a tire of a vehicle for transporting an ascon, etc.

Another object of the present invention is to provide an asphaltic asphalt for preventing adhesion of the asphalt concrete pavement, which is excellent in anti-adhesion property and improves the durability and workability of the asphalt concrete pavement.

In order to achieve the above object, an embodiment of the present invention provides an asphalt for preventing adhesion, which comprises asphalt, a surfactant, water and an additive, wherein the adhesion-preventing emulsified asphalt has an invasion degree of the evaporation residue by KS M 2254 Is 5 to 30, the softening point by KS M 2201 is 64 ° C or more, the absolute viscosity (60 ° C) by KS M 2247 is 150 Pa · s or more, the angularity by KS M 2203 is 1 to 15, And a storage stability by KS M 2203 of 1% by weight or less.

In a preferred embodiment of the present invention, the anti-adhesion emulsified asphalt may be characterized in that the rate of tire adhesion is 10% by weight or less.

In one preferred embodiment of the present invention, the anti-adhesion emulsified asphalt comprises 70 to 150 parts by weight of asphalt, 1 to 5 parts by weight of a surfactant and 10 to 50 parts by weight of an additive, based on 100 parts by weight of water have.

In a preferred embodiment of the present invention, the additive is selected from the group consisting of polyphosphoric acid, natural rubber, styrene butadiene rubber, styrene butadiene styrene, polyethylene, ethylene vinyl acetate, polypropylene, polyvinyl chloride, polyethylene terephthalate, A resin, a phenol resin, a petroleum resin, a polyamide resin, rake asphalt, sodium chloride, and calcium chloride.

The antifouling emulsified asphalt according to the present invention does not use an antifouling agent or the like and can be easily prevented from adhering to a tire of a construction machine or an ascon transporting vehicle to improve workability and reduce loss due to adhesion And the durability and workability of the asphalt concrete pavement can be improved.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In general, the nomenclature used herein is well known and commonly used in the art.

Throughout this specification, when an element is referred to as including an element, it is understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

The present invention relates to an asphalt composition for preventing adhesion of asphalt containing an asphalt, a surfactant, a water and an additive, wherein the penetration of the evaporation residue by KS M 2254 is 5 to 30 and the softening point by KS M 2201 is (60 ° C) of 150 Pa · s or more by KS M 2247, an angularity of 1 to 15 by KS M 2203, and a storage stability by KS M 2203 of 1 wt% or less The present invention relates to an asphalt emulsion for preventing adhesion.

More specifically, the present invention can prevent adhesion to a construction machine, a working tool, a tire of an ascon conveyance vehicle, etc. by controlling the softening point, absolute viscosity, penetration degree, angularity and storage stability of the evaporated remnants of emulsified asphalt, It is possible to improve the durability and the workability of the asphalt concrete pavement.

The emulsion asphalt for preventing adhesion according to the present invention is prepared by mixing water with asphalt, a surfactant, an additive and the like, preferably 70 to 150 parts by weight of the asphalt, 1 to 5 parts by weight of the surfactant, 10 to 50 parts by weight of the additive may be mixed. If the content is out of the above range, the emulsion asphalt function, such as lowering the adhesive strength with the ascon layer or increasing the adhesion, can not be exhibited, which is economically disadvantageous.

The water can use ordinary clean water, and it is not preferable to use water having a high ion content to improve uniform mixing of the respective constituents and the function of the emulsified asphalt of the present invention.

The asphalt refers to a black or brownish semi-solid colloidal material remaining after the hard portion of the components constituting petroleum is evaporated by a natural or artificial method. Asphalt can be used for pavement asphalt PG grades 46-22, 52-22, 58-22, 64-22, 70-22, 76-22, 82-22 according to KS F 2389 publicity grade (PG grade) Do.

The surfactant is an emulsifier that allows the asphalt and the like to be dispersed in water and mix well. Any surfactant may be used in general.

Examples of the surfactant include a cationic surfactant, an anionic surfactant, and a nonionic surfactant. Examples of the cationic surfactant include amines, quaternary ammonium salts, pyridinium, and the like. It has corrosion protection function. Also, anionic surfactants include sulfate, sulfonate, and organic phosphoric acid-based surfactants, and generally have good foaming properties. Non-ionic surfactants include ethylene oxide-based Ethylene oxide-based, diethanolamine-based Diethanolamine-based, sorbitol-based Sorbitol-based, and glycerin-based Glycerine-based. Bubble stability is harmless to human body.

In the present invention, all of the cationic, anionic and nonionic surfactants described above can be used, and it is particularly preferable to use a cationic surfactant having excellent adhesion with aggregates.

In order to satisfy the aforementioned range of softening point, absolute viscosity, penetration degree, angularity and storage stability, the antifouling emulsified asphalt according to the present invention may contain additives such as a modifying agent and a storage stabilizer in addition to the antifouling agent Can be adjusted.

Examples of the additive include polyphosphoric acid, natural rubber, styrene butadiene rubber, styrene butadiene styrene, polyethylene, ethylene vinyl acetate, polypropylene, polyvinyl chloride, polyethylene terephthalate, epoxy resin, urethane resin, acrylic resin, phenol resin, At least one additive selected from the group consisting of polyamide resin, rake asphalt, sodium chloride and calcium chloride can be used.

In the asphalt for anti-adhesion according to the present invention, the penetration degree of the evaporation residue (KS M 2254) is 5 to 30. If the penetration degree of the ash remnants of emulsified asphalt is less than the above range, the anti-adhesion performance of the emulsified asphalt may increase, but the interlayer adhesion performance may be poor. If the penetration degree exceeds the above range, Can be lowered.

In addition, the asphalt for preventing adhesion according to the present invention may have a softening point (KS M 2201) of the evaporation residue of 64 ° C or higher. If the softening point of the evaporation residue of the emulsified asphalt for adhesion prevention is less than the above range, the anti-sticking function may be lowered.

Further, the evaporation residue of the asphalt for anti-adhesion according to the present invention has an absolute viscosity (60 ° C) of 150 Pa · s or more based on KS M 2247. If the absolute viscosity of the emulsified asphalt is less than the above range, the amount of the adhesion of the asphalt for emulsion adhesion to the tire is increased, thereby damaging the coating layer and weakening the interlaminar adhesive strength.

In addition, the anti-sticking asphalt for anti-sticking according to the present invention controls the Engler degree and the storage stability of the anti-sticking asphalt to further improve the anti-adhesion performance of the asphalt emulsion, and also the storage stability, durability, Can be improved.

The angularity of the above-mentioned anti-adhesion asphalt for emulsification is 1 to 15 based on KS M 2203. If it is less than the above range, the sticking performance may be deteriorated, and if it is exceeded, the viscosity may become high, .

In addition, the storage stability of the above-mentioned antifouling emulsified asphalt is not more than 1% by weight based on KS M 2203.

It is preferable that the tire adhesion rate (JEAAT-6) represented by the formula 1 is 10% by weight or less in the above-mentioned emulsion asphalt for anti-adhesion according to the present invention. At this time, when the tire attaching rate exceeds 10% by weight, the fall-off area is widened, and the interlayer adhesion problem is caused in the package layer, so that the roads may be prematurely broken.

[Formula 1]

The emulsion asphalt for anti-adhesion according to the present invention can be prepared by mixing by known methods. The water, asphalt and surfactant are uniformly mixed first, and additives are added and mixed to improve the functionality of emulsified asphalt .

Further, it may be prepared by further adding a modifier, a pH adjuster, a storage stabilizer, etc. to maintain and improve the functionality of the present invention. The pH adjusting agent may be an acid such as hydrochloric acid, acetic acid, nitric acid, sulfuric acid, formic acid, acrylic acid, etc. The storage stabilizer may be alcohol, CaCl ₂ , NaCl or NH ₄ Cl, and the modifier may be a phenol resin or the like.

When the asphalt concrete pavement having the multi-layer structure formed of the asphalt concrete mixed with the aggregate and the asphalt is manufactured, the emulsion asphalt can be sprayed between the layers, and the emulsified asphalt Can be used as an emulsified asphalt composition mixed with an aggregate.

The aggregate may be prepared by mixing 100 to 300 parts by weight of 100 parts by weight of the emulsified asphalt. The aggregate may be packed at a thickness of 5 to 30 mm to increase the interlaminar adhesion of the multi-layered package, The work efficiency can be improved.

The emulsified asphalt composition may be formed between the layers of the multilayered package such as the emulsified asphalt to improve the interlaminar adhesion and improve the effect of preventing tire adhesion.

The present invention will be described in more detail by way of the following examples. However, the following examples are only illustrative of the present invention, and the claims of the present invention are not limited thereto.

< Example  1>

1.0 part by weight of a quaternary ammonium surfactant (KAO, Japan) and 2.0 parts by weight of calcium chloride were added to 100 parts by weight of water heated to 80 DEG C and stirred at 60 rpm / minute for 60 minutes to prepare emulsified water, The asphalt prepared by stirring 8.0 parts by weight of a phenol resin (solar synthesis, domestic) at 90 rpm / min for 90 minutes with 70 parts by weight of heated asphalt (PG 64-22, S-Oil) and the emulsified water prepared at 3,000 rpm / Min to produce an anti-adhesion emulsified asphalt according to the present invention.

< Example  2 to 6 and Comparative Example  1 to 18>

The emulsion asphalt for preventing adhesion was prepared in the same manner as in Example 1, and the emulsion asphalt for preventing adhesion according to the present invention was prepared with the components and contents shown in Table 1 below.

division
water
(Parts by weight) PG 64-22
asphalt
(Parts by weight) Surfactants
(Parts by weight) additive Phenolic resin
(Parts by weight) Calcium chloride
(Parts by weight) Example 1 100 70 1.0 8 2.00 Example 2 100 70 1.5 14 3.50 Example 3 100 100 2.5 20 5.00 Example 4 100 100 3.0 25 6.25 Example 5 100 150 4.5 35 8.75 Example 6 100 150 5.0 40 10.00 Comparative Example 1 100 50 1.0 8 2.00 Comparative Example 2 100 55 2.5 20 5.00 Comparative Example 3 100 60 5.0 40 10.00 Comparative Example 4 100 160 1.0 8 2.00 Comparative Example 5 100 170 2.5 20 5.00 Comparative Example 6 100 180 5.0 40 10.00 Comparative Example 7 100 70 0.7 8 2.00 Comparative Example 8 100 100 0.8 20 5.00 Comparative Example 9 100 150 0.9 40 10.00 Comparative Example 10 100 70 6.0 8 2.00 Comparative Example 11 100 100 8.0 20 5.00 Comparative Example 12 100 150 10.0 40 10.00 Comparative Example 13 100 70 1.0 2 0.50 Comparative Example 14 100 100 2.5 5 1.25 Comparative Example 15 100 150 5.0 7 1.75 Comparative Example 16 100 70 1.0 45 11.25 Comparative Example 17 100 100 2.5 50 12.50 Comparative Example 18 100 150 5.0 55 13.75

Table 2 shows the angles and storage stability of the asphalt emulsion for preventing adhesion and the penetration, softening point and absolute viscosity of the evaporation residues prepared in Examples 1 to 6 and Comparative Examples 1 to 18, respectively. At this time, the angelity and storage stability were measured with KS M 2203, penetration of evaporation residue with KS M 2254, softening point with KS M 2201, absolute viscosity with KS M 2247, and tire adhesion rate with JEAAT-6.

division Angel
Storage stability
(weight%)
Evaporation residue Intrusion
(1/10 mm) Softening point
(° C) Absolute viscosity
(60 DEG C) tire
Adhesion rate
(weight%) Example 1 2 0.20 29.1 65 151 9.7 Example 2 5 0.25 24.3 69 154 8.9 Example 3 8 0.28 19.7 74 169 5.4 Example 4 10 0.31 14.6 77 177 4.3 Example 5 13 0.47 11.5 81 211 1.4 Example 6 15 0.61 5.9 84 224 0.8 Comparative Example 1 One 1.87 2.8 92 327 0.3 Comparative Example 2 One 2.12 3.9 89 287 0.4 Comparative Example 3 1.5 2.26 1.4 97 396 0.1 Comparative Example 4 16 2.84 11.7 82 227 1.5 Comparative Example 5 19 3.12 7.2 84 247 0.9 Comparative Example 6 22 3.19 3.7 88 267 0.8 Comparative Example 7 2 6.78 28.2 64 152 9.3 Comparative Example 8 9 8.12 20.7 75 172 4.1 Comparative Example 9 15 10.25 6.3 83 203 2.1 Comparative Example 10 18 0.11 27.8 63 151 9.2 Comparative Example 11 21 0.05 20.4 74 171 4.2 Comparative Example 12 25 0.03 6.1 81 201 2.2 Comparative Example 13 2 0.30 36.1 43 73 28 Comparative Example 14 4 0.38 41.3 45 77 31 Comparative Example 15 7 0.41 34.5 48 81 37 Comparative Example 16 28 9.84 0.9 114 712 0.1 Comparative Example 17 31 12.47 1.4 107 674 0.1 Comparative Example 18 37 13.78 1.1 106 652 0.1

As shown in Table 2, in the case of Examples 1 to 6, the angel degree and the storage stability were respectively 15 or less and 1 wt% or less, and the tire adhesion rate was 10 wt% or less, while in Comparative Examples 1 to 18 And the tire adhesion rate was less than 10% by weight, and the emulsified asphalt of Examples 1 to 6 according to the present invention exhibited an oil-repellent effect on the emulsified asphalt of Comparative Examples 1 to 18 It was confirmed that not only the adhesion preventive force was excellent but also the storage stability and the workability were excellent.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (4)

The present invention relates to an asphaltic asphalt for preventing adhesion, which comprises 70 to 150 parts by weight of asphalt, 1 to 5 parts by weight of a surfactant, and 10 to 50 parts by weight of an additive, based on 100 parts by weight of water,
The above mentioned adhesion preventive asphalt is characterized in that the penetration degree of the evaporation residue by KS M 2254 is 5 to 30, the softening point by KS M 2201 is 64 ° C or more and the absolute viscosity (60 ° C) by KS M 2247 is 150 Pa · s By weight, an angularity of 1 to 15 by KS M 2203, and a storage stability by KS M 2203 of 1% by weight or less.
The method according to claim 1,
Wherein the anti-adhesion emulsified asphalt has a tire adhesion rate of 10 wt% or less.
delete The method according to claim 1,
The additive may be selected from the group consisting of polyphosphoric acid, natural rubber, styrene butadiene rubber, styrene butadiene styrene, polyethylene, ethylene vinyl acetate, polypropylene, polyvinyl chloride, polyethylene terephthalate, epoxy resin, urethane resin, acrylic resin, Amide resin, rake asphalt, sodium chloride, and calcium chloride.