KR102442677B1 - Sealer composition for coating surface and injecting into joint and crack part of asphalt concrete road and constructing method using the same - Google Patents

Abstract

The present invention relates to a filler composition for surface treatment and injection into joint and crack parts of an asphalt concrete road and a construction method using the same. The filler composition of the present invention is obtained by mixing a base material containing 5 to 50 weight% of a functional filler, 30 to 80 weight% of a functional additive, 1 to 10 weight% of a crosslinking agent, 0.1 to 5 weight% of bio heavy oil, and 0.1 to 5 weight% of a solvent, with a curing agent in a weight ratio of 1:0.1 to 1. Therefore, the present invention can effectively respond to external stress applied to the asphalt concrete road.

Description

Filler composition for surface treatment of asphalt concrete road, joint and crack injection, and construction method using the same

The present invention provides a strong adhesive performance with an existing asphalt concrete road, and the material itself has excellent performance such as durability, water resistance, heat resistance, flow resistance and weather resistance, and external stress such as load, vibration, impact, etc. applied to the asphalt concrete road In particular, it has excellent followability to deformation due to shrinkage/expansion of asphalt concrete road according to temperature change, and prevents the infiltration of rainwater, remaining water, and foreign substances through integrated behavior with asphalt concrete road, thereby preventing cracks from occurring. It relates to a filler composition for surface treatment of asphalt concrete roads that can effectively prevent and consequently contribute to the life extension of asphalt concrete roads, joints and cracks, and a construction method using the same.

Asphalt concrete roads, including general roads, bridges, airports, and highways, and asphalt concrete roads including curbs, protective walls, etc. may be subject to microcracks due to shrinkage/expansion according to temperature changes. In particular, since the asphalt concrete road and the pavement such as the bridge top plate or the road lower layer have a difference in the coefficient of expansion, cracks may become more severe as the temperature changes. Moreover, if rainwater penetrates the cracks, partial subsidence of the subgrade can occur, and when pressure is applied by vehicle traffic, the cracks progress to the existing pavement layer by subsidence generated in the subgrade. This can be large. In particular, asphalt concrete roads are damaged by cracks or partial detachment due to constant load, vibration, shock, wear, corrosion, etc., and if the damage exceeds a certain range, large-scale repairs are required, and accordingly, repair costs are also high. will increase exponentially.

Therefore, in order to prevent the asphalt concrete road from being damaged by absorbing the displacement difference due to the elongation or contraction according to the temperature change, and to block rainwater or remaining water to prevent moisture penetration into the asphalt concrete road, conventionally, the asphalt concrete road After forming a joint having a predetermined width and depth, the joint was constructed by injecting a filler composition. More specifically, in the bridge, the joint was constructed at the bonding part of the structure and the pavement such as the expansion joint and rain gutter, and in the road, the joint was constructed at the joint part of the shoulder part and the drainage structure pavement and the construction joint part of the new and old asphalt pavement. . In addition, by injecting the filler composition into cracks that have already occurred in the asphalt concrete road, cracking, detachment and damage caused by temperature change, load, vibration, impact, abrasion, corrosion, etc. are prevented, and moisture penetration into the asphalt concrete road is prevented. wanted to

However, the conventional silicone-based filler composition has a problem in that the adhesive performance with the existing asphalt concrete road is poor, so it is easy to crack again, and rainwater or foreign substances penetrate into these cracks and cause damage. In addition, the silicone-based filler composition has many problems, such as a long curing time, delaying the time for expressing initial performance. In addition, the epoxy-based filler composition is not environmentally friendly because the amount of the solvent containing the volatile organic compound is increased in order to increase the permeability, the adhesive performance is lowered, the curing time is delayed, and the joint or repaired cracks due to the low elasticity There were many problems, such as the occurrence of new cracks in the vicinity of the part.

Therefore, in the prior art, by using a filler composition, it was attempted to improve the adhesion performance with the existing asphalt concrete road, shorten the curing time, enable traffic opening immediately after construction, and provide easy constructability. However, the performance of the material itself, such as durability, water resistance, and weather resistance, as well as followability to the deformation caused by expansion and contraction of the asphalt concrete road and adhesion to the asphalt concrete road are still insufficient.

Republic of Korea Patent No. 10-1114238 Republic of Korea Patent Registration No. 10-1357760 Republic of Korea Patent Registration No. 10-1635323

The present invention has been devised to solve the above-described problems, and an embodiment of the present invention can provide a strong adhesive performance with an existing asphalt concrete road, and in particular, it is suitable for the contraction/expansion of an asphalt concrete road according to a change in temperature. It has excellent deformation followability and can shorten the curing time, and has excellent performance such as durability, water resistance, heat resistance, flow resistance and weather resistance of the material itself, which effectively prevents cracking, and consequently contributes to extending the life of asphalt concrete roads. An object of the present invention is to provide a filler composition for surface treatment of asphalt concrete roads, joints and cracks, and a construction method using the same.

Various problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

An embodiment of the present invention provides a main agent comprising 5 to 50% by weight of a functional filler, 30 to 80% by weight of a functional additive, 1 to 10% by weight of a crosslinking agent, 0.1 to 5% by weight of bio-heavy oil, and 0.1 to 5% by weight of a solvent; A curing agent containing isocyanate is mixed in a weight ratio of 1:0.1 to 1;

The functional filler is 100 parts by weight of calcium carbonate, 30 to 50 parts by weight of aluminum nitride, 10 to 30 parts by weight of aluminum hydroxide, 1 to 10 parts by weight of halloysite and 1 to 10 parts by weight of magnesium diboride;

The functional additive is 100 parts by weight of polyol, 10 to 40 parts by weight of styrene-ethylene-butylene-styrene copolymer, 10 to 30 parts by weight of styrene-isoprene-butadiene copolymer, 5 to 30 parts by weight of butyl rubber, ethylene-propylene- It provides a filler composition for surface treatment, joint and crack injection of an asphalt concrete road comprising 5 to 30 parts by weight of diene rubber and 0.5 to 5 parts by weight of polyphenylene sulfide including a repeating unit represented by Formula 1 .

[Formula 1]

In the above formula,

a and b are each independently an integer from 1 to 500;

The bio-heavy oil is liquefied by heating at least one type of waste oil selected from the group consisting of animal waste hog, animal waste tallow, sewage oil residue, and mixtures thereof at a temperature of 40 to 50 ° C., followed by filtration to remove solids to do; The filtered liquefied waste oil is contacted with magnesium and anhydrous sodium sulfate (Na ₂ SO ₄ ) to remove moisture, followed by filtration and pretreatment; preparing a raw material mixture by mixing the pre-treated liquefied waste oil and 70 to 95% by weight of an aqueous alcohol solution solvent in a 1:0.1 to 0.5 weight ratio; and reacting the raw material mixture at a temperature of 200 to 600° C. and a pressure of 100 to 250 bar, which is a supercritical state of the aqueous alcohol solvent, to prepare bio-heavy oil.

The aluminum hydroxide is aluminum hydroxide whose surface is hydrophobically modified;

The aluminum hydroxide, the surface of which is hydrophobically-modified, includes aluminum hydroxide having an average particle diameter of 10 to 50 μm, added to an alkane solution containing 0.5 to 10 vol% of liquid alkane and the remaining amount of solvent, followed by a speed of 500 to 1000 RPM. stirring to allow the liquid alkane to be adsorbed to the aluminum hydroxide particles; and after removing the solvent, drying.

The halloysite is a halloysite nanotube whose surface is sulfonated;

The sulfonated halloysite nanotubes on the surface have an average length of 0.1 to 1 μm and an average diameter of an inner tunnel (lumen) of 10 to 150 nm, mixed with a halloysite nanotube and a cyclic sulfonic acid ester, and treated with Then, refluxing and stirring; and filtering, washing and drying; may be prepared by a manufacturing method comprising a.

In addition, another embodiment of the present invention is a method of constructing a joint or crack of an asphalt concrete road using the filler composition for surface treatment, joint and crack injection of the asphalt concrete road,

A foreign material removal step of removing foreign substances including moisture or dust in joints or cracks of the asphalt concrete road to be constructed; an injection step of injecting a filler composition for surface treatment of the asphalt concrete road, joints and cracks into the joints or cracks; And it provides a construction method comprising a curing step.

In addition, another embodiment of the present invention is a method of constructing an asphalt concrete road adjacent to a road facility using a filler composition for surface treatment, joint and crack injection of the asphalt concrete road,

removing and cleaning impurities or deteriorated parts of road facilities to be constructed; applying a surface protection/reinforcing agent to the cleaned surface of the road facility to prevent penetration of foreign substances, rainwater, permeated water, etc.; First applying a filler composition for surface treatment of the asphalt concrete road, joints and cracks on the surface to which the surface protection/reinforcing agent is applied; Forming a new pavement for asphalt concrete road by pouring asphalt concrete; Secondary application of a filler composition for surface treatment of the asphalt concrete road, joint and crack injection to the connection part of the pavement on which the asphalt concrete is poured and the road facility; And it provides a construction method comprising a curing step.

According to the filler composition for surface treatment, joint and crack injection of the asphalt concrete road according to an embodiment of the present invention, and the construction method using the same, it provides a strong adhesive performance with an existing asphalt concrete road, and has tensile strength and elongation. Excellent, there is an effect that can effectively respond to external stress such as load, vibration, and shock applied to the asphalt concrete road. In addition, the effect of effectively preventing cracks by preventing the penetration of rainwater, resident water, and foreign substances through the integrated behavior with the asphalt concrete road as it has excellent followability to deformation due to the contraction/expansion of the asphalt concrete road according to the temperature change there is In addition, it is possible to provide easy constructability and shorten the curing time, thereby shortening the construction time and the traffic opening time after construction, thereby having the effect of realizing the effect of reducing the construction cost. In addition, it has excellent durability against alkalis and acids such as deicing agents, seawater and acid rain, water resistance, heat resistance, flow resistance and weather resistance according to ultraviolet (UV), which can contribute to extending the life of road facilities adjacent to asphalt concrete roads. In addition, since it does not contain volatile organic compounds, it is eco-friendly and has the effect of contributing to environmental protection.

1 is a schematic cross-sectional view showing a construction site of a construction method using a filler composition for surface treatment, joint and crack injection of an asphalt concrete road according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, this is provided as an example, and the present invention is not limited thereto, and the present invention is only defined by the scope of the claims to be described later.

An embodiment of the present invention provides a main agent comprising 5 to 50% by weight of a functional filler, 30 to 80% by weight of a functional additive, 1 to 10% by weight of a crosslinking agent, 0.1 to 5% by weight of bio-heavy oil, and 0.1 to 5% by weight of a solvent; A curing agent containing isocyanate is mixed in a weight ratio of 1:0.1 to 1;

The functional filler is 100 parts by weight of calcium carbonate, 30 to 50 parts by weight of aluminum nitride, 10 to 30 parts by weight of aluminum hydroxide, 1 to 10 parts by weight of halloysite and 1 to 10 parts by weight of magnesium diboride;

The functional additive is 100 parts by weight of polyol, 10 to 40 parts by weight of styrene-ethylene-butylene-styrene copolymer, 10 to 30 parts by weight of styrene-isoprene-butadiene copolymer, 5 to 30 parts by weight of butyl rubber, ethylene-propylene- It provides a filler composition for surface treatment, joint and crack injection of an asphalt concrete road comprising 5 to 30 parts by weight of diene rubber and 0.5 to 5 parts by weight of polyphenylene sulfide including a repeating unit represented by Formula 1 .

[Formula 1]

In the above formula,

a and b are each independently an integer from 1 to 500;

According to the filler composition for surface treatment, joint and crack injection of the asphalt concrete road according to an embodiment of the present invention, and a construction method using the same, it provides a strong adhesive performance with an existing asphalt concrete road, and provides tensile strength and elongation. This is excellent, and there is an effect that can effectively respond to external stress such as load, vibration, and shock applied to the asphalt concrete road. In addition, the effect of effectively preventing cracks by preventing the penetration of rainwater, resident water, and foreign substances through the integrated behavior with the asphalt concrete road as it has excellent followability to deformation due to the contraction/expansion of the asphalt concrete road according to the temperature change there is In addition, it is possible to provide easy constructability and shorten the curing time, thereby shortening the construction time and the traffic opening time after construction, thereby having the effect of realizing the effect of reducing the construction cost. In addition, it has excellent durability against alkalis and acids such as deicing agents, seawater and acid rain, water resistance, heat resistance, flow resistance and weather resistance according to ultraviolet (UV), which can contribute to extending the life of road facilities adjacent to asphalt concrete roads. In addition, since it does not contain volatile organic compounds, it is eco-friendly and has the effect of contributing to environmental protection.

More specifically, the filler composition for surface treatment, joint and crack injection of the asphalt concrete road according to an embodiment of the present invention contains 5 to 50% by weight of a functional filler, 30 to 80% by weight of a functional additive, and 1 to 10% by weight of a crosslinking agent. %, 0.1 to 5% by weight of bio-heavy oil, and 0.1 to 5% by weight of a solvent, and a curing agent containing isocyanate is mixed in a weight ratio of 1:0.1 to 1.

First, the functional filler contained in the subject matter controls physical properties such as fluidity and viscosity, and functions to provide excellent strength, abrasion resistance, crack resistance and durability.

It is preferable that the functional filler contained in the subject matter is contained in the subject matter in an amount of 5 to 50% by weight. When the content of the functional filler is too small, there is a problem that the above-described improvement effect may be insufficient, and when the content of the functional filler is too large, there is a problem that injection performance may be lowered or elongation may be lowered.

In addition, the functional filler includes 100 parts by weight of calcium carbonate, 30 to 50 parts by weight of aluminum nitride, 10 to 30 parts by weight of aluminum hydroxide, 1 to 10 parts by weight of halloysite, and 1 to 10 parts by weight of magnesium diboride. can

First, the calcium carbonate functions to provide excellent strength and durability. In particular, it is possible to increase the absorption rate to increase the adhesion, and to implement the excellent alkali resistance.

Hereinafter, the content of other components constituting the functional filler is based on 100 parts by weight of the calcium carbonate.

The aluminum nitride functions to provide excellent strength, abrasion resistance, crack resistance and durability. In addition, it functions to realize excellent thermal stability, acid resistance, chloride ion permeation resistance, and weather resistance.

The aluminum nitride may preferably have an average particle diameter of 1 to 30 μm.

The aluminum nitride is preferably contained in an amount of 30 to 50 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the aluminum nitride is too small, there is a problem that the above improvement effect may be insufficient, and when the content of the aluminum nitride is too large, it is difficult to expect any further improvement effect, and price competitiveness may be lowered There is this.

The aluminum hydroxide functions to provide excellent strength, abrasion resistance, crack resistance and durability. In addition, it functions to implement excellent thermal stability, acid resistance, chloride ion permeation resistance, weather resistance, and impermeability.

The aluminum hydroxide may preferably have an average particle diameter of 10 to 50 μm.

In addition, by modifying the surface of the aluminum hydroxide to be hydrophobic, the above-described effect can be further improved, and the compatibility of the composition can be further improved, so that excellent waterproofness and impermeability can be greatly improved, and workability is greatly improved. has the effect of being

More specifically, the aluminum hydroxide whose surface is hydrophobically modified is aluminum hydroxide having an average particle diameter of 10 to 50 μm, added to an alkane solution containing 0.5 to 10% by volume of liquid alkane and the remainder of the solvent, and then 500 to Stirring at a speed of 1000 RPM so that the liquid alkane is adsorbed to the aluminum hydroxide particles; and after removing the solvent, drying may be preferably used.

At this time, the liquid alkane is nonane (C ₉ H ₂₀ ), decane (C ₁₀ H ₂₂ ), undecane (C ₁₁ H ₂₄ ), dodecane (C ₁₂ H ₂₆ ), tridecane (C ₁₃ H ₂₈ ), At least one selected from the group consisting of tetradecane (C ₁₄ H ₃₀ ), pentadecane (C ₁₅ H ₃₂ ), hexadecane (C ₁₆ H ₃₄ ), and mixtures thereof may be preferably used. More preferably, by using a mixture of nonane (C ₉ H ₂₀ ) and tetradecane (C ₁₄ H ₃₀ ) in a volume ratio of 1: 0.5 to 1, the above-described effect can be further improved. In addition, the solvent may preferably be at least one selected from the group consisting of n-hexane (n-Hexane), n-octane (n-Octane), and mixtures thereof.

The aluminum hydroxide is preferably contained in an amount of 10 to 30 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the aluminum hydroxide is too small, there is a problem that the above-mentioned improvement effect may be insufficient, and when the content of the aluminum hydroxide is too large, it is difficult to expect any further improvement effect, and the price competitiveness may be lowered. There is this.

The halloysite functions to provide excellent strength, abrasion resistance, crack resistance and durability. In addition, it functions to implement excellent thermal stability, acid resistance, chloride ion permeation resistance, weather resistance, and impermeability.

As the halloysite is a halloysite nanotube with a sulfonated surface, it is possible to further improve the above-described effect, provide strong adhesion to the existing asphalt concrete pavement, and shorten the curing time, It has the effect of shortening the construction time and the traffic opening time after construction.

More specifically, the sulfonated halloysite nanotubes on the surface have an average length of 0.1 to 1 μm and an average diameter of an inner tunnel (lumen) of 10 to 150 nm by mixing halloysite nanotubes and cyclic sulfonic acid esters. , followed by sonication, reflux and stirring; And filtration, washing and drying steps; those prepared by a manufacturing method comprising a can be preferably used.

The halloysite is preferably contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the halloysite is too small, the improvement effect may be insufficient. When the content of the halloysite is too large, it is difficult to expect any further improvement effect and price competitiveness may be lowered. There is this.

The magnesium diboride functions to implement excellent thermal stability, weather resistance, impermeability, and injection performance.

The magnesium diboride is preferably contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the calcium carbonate. When the content of the magnesium diboride is too small, there is a problem that the above improvement effect may be insufficient, and when the content of the magnesium diboride is too large, it is difficult to expect any further improvement effect, and price competitiveness may be lowered. there is a problem with

In addition, the functional filler may further contain 0.1 to 5 parts by weight of a pigment based on 100 parts by weight of the calcium carbonate in order to impart a desired color and implement the function of blocking UV rays.

The functional additive contained in the subject matter provides excellent adhesive performance, tensile strength, elasticity and elongation, and functions to improve deformation resistance and crack resistance. In addition, it provides excellent dispersibility and storage stability, and provides excellent weather resistance, heat resistance, aging resistance, ozone resistance and acid resistance, etc., thereby contributing to the extension of the lifespan of asphalt concrete roads.

The functional additive contained in the above-mentioned subject is preferably contained in the above-mentioned subject in an amount of 30 to 80% by weight. When the content of the functional additive is too small, there is a problem that the improvement effect may be insufficient, and when the content of the functional additive is too large, it is difficult to expect any further improvement effect, and price competitiveness may be lowered There is this.

In addition, the functional additive is 100 parts by weight of polyol, 10 to 40 parts by weight of styrene-ethylene-butylene-styrene copolymer, 10 to 30 parts by weight of styrene-isoprene-butadiene copolymer, 5 to 30 parts by weight of butyl rubber, ethylene- A propylene-diene rubber containing 5 to 30 parts by weight and 0.5 to 5 parts by weight of polyphenylene sulfide including the repeating unit represented by Formula 1 may be preferably used.

[Formula 1]

In the above formula,

a and b are each independently an integer from 1 to 500;

First, the polyol functions to provide excellent adhesion and waterproof properties.

The polyol may be at least one selected from the group consisting of polyether polyol, polycarbonate polyol, polyester polyol, and mixtures thereof. The more preferable polyol is a polyether polyol and a polyester polyol mixed in a ratio of 1: 1 to 3 by weight, so that not only the above-described improvement effect but also the tensile strength, chemical resistance and abrasion resistance can be further improved. there is

More specifically, as the polyether polyol, polytetramethylene glycol may be preferably used; The polyester polyol has a number average molecular weight of 900 to 2,000, a copolymer polyol of 1,6-hexanediol and adipic acid, a copolymer polyol of 1,4-butanediol and adipic acid, and a copolymer polyol of 1,4-butanediol and adipic acid , at least one selected from the group consisting of a copolymer polyol of neopentyl glycol and adipic acid can be preferably used.

Hereinafter, the content of other components constituting the functional additive is based on 100 parts by weight of the polyol.

The styrene-ethylene-butylene-styrene copolymer provides excellent adhesive performance, tensile strength, elasticity and elongation, and functions to improve deformation resistance and crack resistance.

The styrene-ethylene-butylene-styrene copolymer is preferably contained in an amount of 10 to 40 parts by weight based on 100 parts by weight of the polyol. When the content of the styrene-ethylene-butylene-styrene copolymer is too small, there is a problem that the above-described improvement effect may be insufficient. When the content of the styrene-ethylene-butylene-styrene copolymer is too large, it is The improvement effect is difficult to expect, and there is a problem that price competitiveness may be lowered.

The styrene-isoprene-butadiene copolymer provides excellent adhesive performance, tensile strength, elasticity and elongation, and functions to improve deformation resistance and crack resistance.

The styrene-isoprene-butadiene copolymer is preferably contained in an amount of 10 to 30 parts by weight based on 100 parts by weight of the polyol. When the content of the styrene-isoprene-butadiene copolymer is too small, the above improvement effect may be insufficient. When the content of the styrene-isoprene-butadiene copolymer is too high, no further improvement effect is expected It is difficult, and there is a problem in that price competitiveness may be lowered.

The butyl rubber provides excellent adhesive performance, tensile strength, elasticity and elongation, and functions to improve deformation resistance and crack resistance. In addition, by providing excellent weather resistance, heat resistance, aging resistance, ozone resistance and acid resistance, etc., it can contribute to extending the life of asphalt concrete roads.

The butyl rubber is isobutylene-isoprene rubber (IIR), brominated isobutylene-isoprene rubber (BIIR), chlorinated-isobutylene-isoprene rubber (chlorinated isobutylene-isoprene) rubber, CIIR) and at least one selected from the group consisting of mixtures thereof may be used.

More specifically, the butyl rubber is isobutylene-isoprene rubber (IIR); By using a mixture of brominated-isobutylene-isoprene rubber (BIIR) or chlorinated-isobutylene-isoprene rubber (CIIR) in a weight ratio of 1: 0.1 to 0.5, the above effects can be further improved, In particular, there is an effect of further improving excellent weather resistance, heat resistance and aging resistance.

The butyl rubber is preferably contained in an amount of 5 to 30 parts by weight based on 100 parts by weight of the polyol. When the content of the butyl rubber is too small, there is a problem that the improvement effect may be insufficient. There is this.

The ethylene-propylene-diene rubber provides excellent adhesive performance, tensile strength, elasticity and elongation, and functions to improve deformation resistance performance and crack response performance. In addition, it provides excellent dispersibility and storage stability, and provides excellent weather resistance, heat resistance, aging resistance, ozone resistance and acid resistance, etc., thereby contributing to the extension of the lifespan of asphalt concrete roads.

The ethylene-propylene-diene rubber is preferably contained in an amount of 5 to 30 parts by weight based on 100 parts by weight of the polyol. When the content of the ethylene-propylene-diene rubber is too small, there is a problem that the above improvement effect may be insufficient, and when the content of the ethylene-propylene-diene rubber is too large, it is difficult to expect any further improvement effect, There is a problem in that price competitiveness may be lowered.

Polyphenylene sulfide containing the repeating unit represented by the formula (1) provides a stronger adhesive performance with the existing asphalt concrete pavement, excellent thermal stability, and deformability due to contraction/expansion of the pavement according to temperature change function to improve In addition, it shortens the curing time, shortens the construction time and the traffic opening time after construction, and also functions to implement excellent alkali and acid durability, heat resistance, flow resistance and weather resistance.

In the polyphenylene sulfide including the repeating unit represented by Formula 1, a and b in Formula 1 are used in a molar ratio of 1: 5 to 15, thereby further improving the above-described improvement effect.

The polyphenylene sulfide including the repeating unit represented by Formula 1 is preferably contained in an amount of 0.5 to 5 parts by weight based on 100 parts by weight of the polyol. When the content of the polyphenylene sulfide including the repeating unit represented by the formula (1) is too small, the above-described improvement effect may be insufficient, and the polyphenylene sulfide including the repeating unit represented by the formula (1) is If the content of is too much, it is difficult to expect any further improvement effect, and there is a problem that price competitiveness may be lowered.

The crosslinking agent contained in the subject material functions to improve mechanical properties including durability by increasing the degree of crosslinking.

The crosslinking agent may be an aromatic or alicyclic amine compound used as a chain extender, and among them, at least one selected from the group consisting of diethyltoluene diamine, 4,4-methylenebisaniline, and mixtures thereof. It can be used preferably.

The crosslinking agent contained in the main agent is preferably contained in the main agent in an amount of 1 to 10% by weight. When the content of the crosslinking agent is too small, the improvement effect may be insufficient, and when the content of the crosslinking agent is too large, there is a problem that excessive hardness improvement and elongation may be reduced.

The bio-heavy oil contained in the subject material further improves the compatibility, fluidity, ductility and workability of the composition, and functions to realize excellent injection performance. In particular, it functions to greatly improve the crack response performance at low temperature.

The bio-heavy oil is obtained by heating one or more waste oils and fats selected from the group consisting of animal waste hogs, animal waste tallow, sewage oil residues and mixtures thereof at a temperature of 40 to 50 ° C. removing; The filtered liquefied waste oil is contacted with magnesium and anhydrous sodium sulfate (Na ₂ SO ₄ ) to remove moisture, followed by filtration and pretreatment; preparing a raw material mixture by mixing the pre-treated liquefied waste oil and 70 to 95% by weight of an aqueous alcohol solution solvent in a 1:0.1 to 0.5 weight ratio; and reacting the raw material mixture at a temperature of 200 to 600° C. and a pressure of 100 to 250 bar, which is a supercritical state of the aqueous alcohol solvent, to prepare bio-heavy oil; The low-temperature flexibility is greatly improved, and the above-described effect can be further improved.

At this time, the alcohol of the aqueous alcohol solution solvent is not particularly limited as long as it is an alcohol commonly used in the art, but for example, methanol, ethanol, propanol, isopropyl alcohol, butanol, isobutanol, 2-butanol, tert-butanol, n-pentanol, isopentyl alcohol, 2-methyl-1-butanol, neopentyl alcohol, diethyl kevinol, methyl propyl kevinol, methyl isopropyl kevinol, dimethyl ethyl kevinol, 1-hexanol, 2-hexane Ol, 3-hexanol, 2-methyl-1-pentanol, 3-methyl-1-pentanol, 4-methyl-1-pentanol, 2-methyl-2-pentanol, 3-methyl-2-pentane ol, 4-methyl-2-pentanol, 2-methyl-3-pentanol, 3-methyl-3-pentanol, 2,2-dimethyl-1-butanol, 2,3-dimethyl-1-butanol, 2 ,3-dimethyl-2-butanol, 3,3-dimethyl-1-butanol, 2-ethyl-1-butanol, 1-heptanol, 2-heptanol, 3-heptanol, 4-heptanol and mixtures thereof One or more selected from the group consisting of may be used. More preferably, a mixture of ethanol and methyl propyl kebinol in a volume ratio of 1: 0.3 to 0.7 may be used.

The bio-heavy oil contained in the subject matter is preferably contained in the subject matter in an amount of 0.1 to 5% by weight. When the content of the bio-heavy oil is too small, the improvement effect may be insufficient, and when the content of the bio-heavy oil is too large, there is a problem that mechanical strength and durability may be reduced.

The solvent contained in the main agent functions to easily mix the main material with the curing agent and to liquefy the physical properties of the main subject to facilitate handling of the main material.

The solvent may be one or more selected from the group consisting of DMC (Dimethyl Cabonate), mineral oil, BTX-based, ketone-based, acetare-based, and mixtures thereof.

The solvent contained in the main agent is preferably contained in the main agent in an amount of 0.1 to 5% by weight. When the content of the solvent is too small, there is a problem that the above improvement effect may be insufficient, and when the content of the solvent is too large, it takes too long for the solvent to volatilize, so workability may be reduced. have.

On the other hand, the isocyanate contained in the curing agent has active hydrogen and reacts with the polyol of the subject to form an intermolecular three-dimensional network structure, thereby realizing excellent strength and durability.

These isocyanates include 1,6-hexamethylene diisocyanate (HDI), toluene diisocyanate (TDI), isophorone diisocyanate (IPDI), 4,4-diphenylmethane diisocyanate (MDI), and mixtures thereof. One or more types selected from may be used more preferably.

On the other hand, the filler composition for surface treatment, joint and crack injection of the asphalt concrete road can be used by directly injecting it into the joint and crack part of the asphalt concrete road.

On the other hand, another embodiment of the present invention is a method of constructing joints or cracks of an asphalt concrete road using the filler composition for surface treatment, joint and crack injection of the asphalt concrete road,

A foreign material removal step of removing foreign substances including moisture or dust in joints or cracks of the asphalt concrete road to be constructed; an injection step of injecting a filler composition for surface treatment of the asphalt concrete road, joints and cracks into the joints or cracks; And it provides a construction method comprising a curing step.

In this case, when the crack width of the joint or crack part is small, the method may further include a groove forming step of forming a repair groove of a predetermined size in the joint part or crack part.

In addition, another embodiment of the present invention is a method of constructing an asphalt concrete road adjacent to a road facility using a filler composition for surface treatment, joint and crack injection of the asphalt concrete road,

removing and cleaning impurities or deteriorated parts of road facilities to be constructed; applying a surface protection/reinforcing agent to the cleaned surface of the road facility to prevent penetration of foreign substances, rainwater, permeated water, etc.; First applying a filler composition for surface treatment of the asphalt concrete road, joints and cracks on the surface to which the surface protection/reinforcing agent is applied; Forming a new pavement for asphalt concrete road by pouring asphalt concrete; Secondary application of a filler composition for surface treatment of the asphalt concrete road, joint and crack injection to the connection part of the pavement on which the asphalt concrete is poured and the road facility; And it provides a construction method comprising a curing step.

1 is a schematic cross-sectional view showing the construction site of the surface treatment of the asphalt concrete road according to an embodiment of the present invention, the construction method using the filler composition for joint and crack injection.

In this case, the road facility to be constructed may be a gutter, a curb, a protective wall, and the like.

According to the filler composition for surface treatment, joint and crack injection of the asphalt concrete road according to an embodiment of the present invention, and the construction method using the same, it provides a strong adhesive performance with an existing asphalt concrete road, and has tensile strength and elongation. Excellent, there is an effect that can effectively respond to external stress such as load, vibration, and shock applied to the asphalt concrete road. In addition, the effect of effectively preventing cracks by preventing the penetration of rainwater, resident water, and foreign substances through the integrated behavior with the asphalt concrete road as it has excellent followability to deformation due to the contraction/expansion of the asphalt concrete road according to the temperature change there is In addition, it is possible to provide easy constructability and shorten the curing time, thereby shortening the construction time and the traffic opening time after construction, thereby having the effect of realizing the effect of reducing the construction cost. In addition, it has excellent durability against alkalis and acids such as deicing agents, seawater and acid rain, water resistance, heat resistance, flow resistance and weather resistance according to ultraviolet (UV), which can contribute to extending the life of road facilities adjacent to asphalt concrete roads. In addition, since it does not contain volatile organic compounds, it is eco-friendly and has the effect of contributing to environmental protection.

As mentioned above, although preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various modifications can be made by those skilled in the art within the scope of the technical spirit of the present invention. This is possible.

<Production Example 1>

Preparation of aluminum hydroxide surface modified with hydrophobicity

Aluminum hydroxide having an average particle diameter of about 29 μm was added to an alkane solution containing 5% by volume of decane (C ₁₀ H ₂₂ ) and the remaining amount of the solvent (n-octane (n-Octane)), and then at a speed of 900 RPM. It was stirred so that the alkane was adsorbed to the aluminum hydroxide particles. Thereafter, by drying in an oven at 120° C. for 30 minutes to remove the solvent, and then air drying for 1 day, aluminum hydroxide having a hydrophobically modified surface was prepared.

<Production Example 2>

Preparation of aluminum hydroxide surface modified with hydrophobicity

Aluminum hydroxide having an average particle diameter of about 29 μm, nonane (C ₉ H ₂₀ ) 4 vol%, tetradecane (C ₁₄ H ₃₀ ) 2 vol%, and the remaining amount of a solvent (n-octane (n-Octane)) containing After being added to the alkane solution, the mixture was stirred at a speed of 900 RPM so that the alkane was adsorbed to the aluminum hydroxide particles. Thereafter, by drying in an oven at 120° C. for 30 minutes to remove the solvent, and then air drying for 1 day, aluminum hydroxide having a hydrophobically modified surface was prepared.

<Production Example 3>

Preparation of surface-sulfonated halloysite nanotubes

To anhydrous toluene, 200 mg/L of halloysite nanotubes having an average length of about 0.55 μm and an average inner tunnel diameter of about 105 nm and 1,3-propane sultone at a concentration of 2.5 mol/L were added. , followed by sonication for 1 hour, followed by stirring under reflux (120 °C, 72 hours). Subsequently, the halloysite nanotubes having a sulfonated surface were prepared by washing with distilled water after filtration and drying.

<Production Example 4>

Manufacturing of bio heavy oil

Waste oil and fat obtained by mixing 62% by weight of animal waste pig, 17% by weight of animal waste, and 21% by weight of sewage oil residue was heated at a temperature of 48° C., liquefied, and filtered to remove solids. The filtered liquefied waste oil was contacted with magnesium and anhydrous sodium sulfate (Na ₂ SO ₄ ) to remove moisture, and then filtered to pre-treat the liquefied waste oil.

After preparing a raw material mixture by mixing the pre-treated liquefied waste oil and 77% by weight of the ethanol aqueous solution solvent in a 1:0.5 weight ratio; By reacting the raw material mixture at a temperature of 360° C. and a pressure of 180 bar, which is a supercritical state of the aqueous alcohol solvent, bio-heavy oil was prepared.

<Preparation Example 5>

Manufacturing of bio heavy oil

Bio-heavy oil was prepared in the same manner as in Preparation Example 1; Instead of the ethanol aqueous solution solvent, an aqueous alcohol solution solvent in which ethanol and methyl propyl kebinol were mixed in a volume ratio of 1: 0.5 was used.

<Examples and Comparative Examples>

A filler composition and a composition for comparison were prepared for surface treatment of asphalt concrete roads and injection of joints and cracks by mixing the components and content conditions as shown in Table 1 below.

Category (wt%) Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Isocyanate ⁽¹⁾ curing agent
(weight ratio) 0.8 0.8 0.8 0.8 0.8 topic
(weight ratio) One One One One One functional filler 27 27 27 29 29 (parts by weight) calcium carbonate 100 100 100 100 100 aluminum nitride
(Average particle diameter: 17 μm) 33 33 33 0 33 aluminum hydroxide 18
[normal
aluminum hydroxide powder] 18
[Production Example 1] 18
[Production Example 2] 0 18
[normal
aluminum hydroxide powder] Holloy Site 5
[normal
halloysite powder] 5
[Production Example 3] 5
[Production Example 3] 0 5
[normal
halloysite powder] Magnesium Diboride Powder 4 4 4 0 0 pigment 1.5 1.5 1.5 1.5 1.5 functional additive 61 61 61 62.5 62.5 (parts by weight) polyols ⁽²⁾ 100 100 100 100 100 Styrene-ethylene-butylene-styrene copolymer 28 28 28 0 28 Styrene-isoprene-butadiene copolymer 22 22 22 0 22 Butyl Rubber ⁽³⁾ 18 19 19 0 19 Ethylene-Propylene-Diene Rubber 9 9 9 0 0 polyphenylene sulfide 3
[Formula
1-1] 3
[Formula
1-1] 3
[Formula
1-2] 0 3
[Formula
1-3] Crosslinking agent (diethyltoluene diamine) 7 7 7 7 7 bio heavy oil 3.5
[Production Example 4] 3.5
[Production Example 5] 3.5
[Production Example 5] 0 0 Solvent (DMC) 1.5 1.5 1.5 1.5 1.5

상기 식에서, a는 107이고, b는 107이다.

[화학식 1-2]

상기 식에서, a는 53이고, b는 480의 정수이다.

[화학식 1-3]

⁽¹⁾ Isocyanate curing agent: A mixture of 1,6-hexamethylene diisocyanate (HDI) and 4,4-diphenylmethane diisocyanate (MDI) in a 1:1 weight ratio is used.

⁽²⁾ Polyol: Polyether polyol (polytetramethylene glycol) and polyester polyol (1,6-hexanediol/adipic acid polyester polyol (number average molecular weight 1,670)) are mixed in a 1:1 weight ratio. used.

⁽³⁾ Butyl rubber: A mixture of isobutylene-isoprene rubber (IIR) and brominated-isobutylene-isoprene rubber (BIIR) in a weight ratio of 1: 0.5 is used.

[Formula 1-1]

In the above formula, a is 107 and b is 107.

[Formula 1-2]

In the above formula, a is 53 and b is an integer of 480.

[Formula 1-3]

The following test examples show experimental results comparing the characteristics of the Examples and Comparative Examples according to the present invention in order to more easily grasp the characteristics of the Examples according to the present invention disclosed above.

<Test Example>

A test coating film was formed by using the filler composition for surface treatment of asphalt concrete roads according to Examples 1 to 3, the joint and crack injection filler compositions, and the comparative compositions according to Comparative Examples 1 and 2.

The coating film was dried at 20° C. for 7 days, and then the physical properties were measured according to the test method of KS F 4923: 2005, and according to KS M 6080, the consistency, non-adhesive drying properties, appearance of the coating film, 45° and 0° diffuse reflectance, Bleeding resistance, abrasion resistance, accelerated weather resistance, water resistance and alkali resistance tests were performed, neutralization depth (KS F 4936), chloride ion penetration resistance test (KS F 4936), acid resistance (measured weight change by immersion in 5% sulfuric acid solution) , accelerated weathering test (KS F 2274, KS A 0063) and cracking resistance (KS F 4937) were evaluated. The results are shown in Table 2 below.

At this time, one quality standard for KS M 6080 is as follows. The consistency is 80~130 KU, and the state in the container should be free from hard lumps and foreign substances in the contents, and it should be easily uniform when stirred. Non-stick dryness means that the paint should not stick to the tire of the non-stick tester after 20 minutes. The appearance of the coating film should be free from wrinkles, stains, swelling, cracks, and peeling. The 45° and 0° diffuse reflectance (%) should be at least 80%. Luminance ratio is the luminance before and after ultraviolet (UV) aging, and white should be 0.8β or more before aging and 0.05ㅿβ or less after aging. Bleeding property should not have severe bleeding when painted on asphalt. The abrasion resistance should be less than 500 mg. For water resistance, there should be no cracks, swelling, wrinkles, discoloration, etc. when immersed in water for 24 hours. For alkali resistance, there should be no cracking or discoloration even after being immersed in a saturated solution of calcium hydroxide for 18 hours.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Tensile strength (N/㎟) 31 33 37 18 25 Elongation at tensile failure (%) 184 188 200 54 124 Compressive strength (N/㎟) 38 39 42 24 29 Curing Shrinkage (%) 0.7 0.5 0.5 3.9 1.5 Adhesive strength (N/㎟) 2.9 3.2 3.3 2.0 2.3 Thixotropic Index (T.I.; Flowability) 1.8 1.7 1.9 1.1 1.5 led (KU) 96 97 97 79 90 state in courage nothing strange nothing strange nothing strange hard lumps nothing strange Non-stick dryness don't ask don't ask don't ask don't ask don't ask film appearance no change no change no change no change no change 45° and 0° diffuse reflectance (%) 89 90 91 71 88 luminance rate Before UV aging (β) 0.89 0.90 0.93 0.69 0.82 After UV aging (Δβ) 0.03 0.02 0.02 0.21 0.08 bleeding property doesn't exist doesn't exist doesn't exist doesn't exist doesn't exist wear resistance 9 7 6 84 28 water resistance no change no change no change no change no change alkali resistance no change no change no change discoloration no change Neutralization depth (mm) 0.5 0.3 0.1 3.8 1.2 Chloride ion penetration resistance (Coulombs) 51 49 32 88 70 Acid resistance, weight change (%) 0.20 0.17 0.07 0.87 0.24 Color difference (E*) after accelerated weathering test (WS, 500 hours) Black color 0.4 0.3 0.3 2.1 1.2 ocher 0.2 0.2 0.1 1.7 0.9 crack resistance Good Good Good error Good

As can be seen in Table 2, the filler composition for surface treatment, joint and crack injection of the asphalt concrete road according to Examples 1 to 3 was compared with the composition for comparison according to Comparative Examples 1 and 2 Thus, it was confirmed that excellent physical properties were exhibited.

As described above, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that all of the embodiments described above are illustrative and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention, rather than the above detailed description, all changes or modifications derived from the meaning and scope of the claims to be described later and their equivalents.

Claims (6)

5 to 50% by weight of a functional filler, 30 to 80% by weight of a functional additive, 1 to 10% by weight of a crosslinking agent, 0.1 to 5% by weight of bio-heavy oil, and 0.1 to 5% by weight of a solvent, and a curing agent containing isocyanate 1 : Mixed in a weight ratio of 0.1 to 1;
The functional filler is 100 parts by weight of calcium carbonate, 30 to 50 parts by weight of aluminum nitride, 10 to 30 parts by weight of aluminum hydroxide, 1 to 10 parts by weight of halloysite and 1 to 10 parts by weight of magnesium diboride;
The functional additive is 100 parts by weight of polyol, 10 to 40 parts by weight of styrene-ethylene-butylene-styrene copolymer, 10 to 30 parts by weight of styrene-isoprene-butadiene copolymer, 5 to 30 parts by weight of butyl rubber, ethylene-propylene- 5 to 30 parts by weight of diene rubber and 0.5 to 5 parts by weight of polyphenylene sulfide including a repeating unit represented by Formula 1 A filler composition for surface treatment, joint and crack injection of an asphalt concrete road.
[Formula 1]

In the above formula,
a and b are each independently an integer from 1 to 500;
According to claim 1,
The bio-heavy oil is liquefied by heating at least one type of waste oil selected from the group consisting of animal waste hog, animal waste tallow, sewage oil residue, and mixtures thereof at a temperature of 40 to 50 ° C., followed by filtration to remove solids to do; The filtered liquefied waste oil is contacted with magnesium and anhydrous sodium sulfate (Na ₂ SO ₄ ) to remove moisture, followed by filtration and pretreatment; preparing a raw material mixture by mixing the pre-treated liquefied waste oil and 70 to 95% by weight of an aqueous alcohol solution solvent in a 1:0.1 to 0.5 weight ratio; and reacting the raw material mixture at a temperature of 200 to 600° C. and a pressure of 100 to 250 bar, which is a supercritical state of the aqueous alcohol solvent, to prepare bio-heavy oil; characterized in that it is prepared by a manufacturing method comprising: A filler composition for surface treatment of asphalt concrete roads and injection of joints and cracks.
According to claim 1,
The aluminum hydroxide is aluminum hydroxide whose surface is hydrophobically modified;
The aluminum hydroxide, the surface of which is hydrophobically-modified, includes aluminum hydroxide having an average particle diameter of 10 to 50 μm, added to an alkane solution containing 0.5 to 10 vol% of liquid alkane and the remaining amount of solvent, followed by a speed of 500 to 1000 RPM. stirring to allow the liquid alkane to be adsorbed to the aluminum hydroxide particles; And after removing the solvent, the step of drying; surface treatment of asphalt concrete road, characterized in that produced by a manufacturing method comprising a filler composition for injection of joints and cracks.
According to claim 1,
The halloysite is a halloysite nanotube whose surface is sulfonated;
The sulfonated halloysite nanotubes on the surface have an average length of 0.1 to 1 μm and an average diameter of an inner tunnel (lumen) of 10 to 150 nm, mixed with a halloysite nanotube and a cyclic sulfonic acid ester, and treated with Then, refluxing and stirring; And filtering, washing, and drying steps; surface treatment of asphalt concrete road, characterized in that produced by a manufacturing method comprising a filler composition for injection, joints and cracks.
A method for constructing joints or cracks of an asphalt concrete road using the filler composition for surface treatment, joint and crack injection of the asphalt concrete road according to any one of claims 1 to 4,
A foreign material removal step of removing foreign substances including moisture or dust in joints or cracks of the asphalt concrete road to be constructed; an injection step of injecting a filler composition for surface treatment of the asphalt concrete road, joints and cracks into the joints or cracks; and a curing step.
As a construction method of an asphalt concrete road adjacent to a road facility using the filler composition for surface treatment, joint and crack injection of the asphalt concrete road according to any one of claims 1 to 4,
removing and cleaning impurities or deteriorated parts of road facilities to be constructed; applying a surface protection/reinforcing agent to the cleaned surface of the road facility to prevent penetration of foreign substances, rainwater, or infiltration water; First applying a filler composition for surface treatment of the asphalt concrete road, joints and cracks on the surface to which the surface protection/reinforcing agent is applied; Forming a new pavement for asphalt concrete road by pouring asphalt concrete; Secondary application of a filler composition for surface treatment of the asphalt concrete road, joint and crack injection to the connection part of the pavement on which the asphalt concrete is poured and the road facility; and a curing step.

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