KR101167020B1 - Epoxy resin compositions f0r waterproof bonding of pavement materials, and construction process of pavement materials thereby - Google Patents

Abstract

PURPOSE: An epoxy resin composition for waterproof bonding of pavement material is provided to reduce tensile deformation, while having high complex modulus, and waterproofness of a packing matearil, because of increased adhesion strength and elongation of an adhesive surface, and to improve lifetime of a road, because of integrated new and old pavements. CONSTITUTION: An epoxy resin composition comprises a based material and a hardener with the weight ratio of 1:0.5-2. The base material comprises 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)]bisoxirane homopolymer in chemical formula 1, and 5-15 weight% of [(2-ethylhexyl)oxy] methyl oxirane in chemical formula 2. The hardner comprises 60-80 weight% of aminododecane in chemical formula 3, 20-40 weight% of hydroxy-terminated 1,3-butadiene homopolymer in chemical formula 4.

Description

Epoxy Resin COMPOSITIONS F0R WATERPROOF BONDING OF PAVEMENT MATERIALS, AND CONSTRUCTION PROCESS OF PAVEMENT MATERIALS THEREBY}

The present invention relates to an epoxy resin composition having improved flow resistance, crack resistance, and water resistance, and a method for constructing a paving material using the same, and when repairing or newly paving concrete structures or pavement surfaces such as roads and bridges, as a process before constructing new paving materials. A mixture of 2,2 '-[(1-methylethylidene) bis (4,1-phenyleneoxyoxymethylene)] bisoxirane homopolymer and [[(2-ethylhexyl) oxy] methyl] oxirane By applying the adhesive of the heating epoxy resin composition which consists of a mixture of aminododecane and hydroxy-terminated 1,3-butadiene homopolymer as a curing agent to the packaging area, the cracks on the road surface due to high complex modulus and ductility It prevents deformation and extends the life of roads and structures, as well as waterproofing function, thereby eliminating complicated urban traffic obstacles caused by frequent repairs. And it relates to a packaging construction method using environment-friendly water resistant epoxy resin composition, and packaging it for bonding which acts to prevent the development.

At present, the condition of pavement is deteriorated year by year due to the increase of traffic volume, the size of vehicles, and the change of climate. The plastic deformation of the pavement is remarkably occurred on such heavy traffic roads. Especially, as the magnitude of rainfall intensity increases due to climate change, structural damage due to lifting, water retention, and chloride infiltration between bridges and pavement increases. The repair cycle is getting shorter every year. As a result, road users may experience inconvenience and time loss due to construction delays, and residents around the road may suffer from deterioration of the living environment due to noise and vibration caused by maintenance work. Since many problems are occurring, paving material for more durable road structures is required in such a situation.

In the existing road repair method, the concrete material is concrete and the asphalt concrete is repaired by ascon. The concrete and asphalt concrete repair method has used mortar repair method using room temperature type epoxy resin. In addition to the heterogeneous difference in physical properties between the existing materials, due to the problem that the repair material used is stronger than the existing material, the side effect of causing cracks or expanding the damage site after the road repair.

Despite such side effects, road pavement using epoxy asphalt composition with epoxy resin added to asphalt has increased the life of the pavement, and while attempts to keep it as good as possible with the increase of life have been continued, Various epoxy asphalt compositions have strong strengths as they are used at room temperature, but there is still room for improvement in crack resistance and workability, and there are also problems that physical properties depend on conditions such as aggregate particle size to be mixed. Structures such as this have caused a lot of problems due to the longitudinal cracking and plastic deformation caused by the tendency to increase.

In order to solve the problems as described above, the applicant of the present invention has developed an epoxy resin composition for asphalt, which has a very high flow resistance and waterproof performance as a use of a heated asphalt pavement mixture using asphalt and a plastic epoxy resin. It is registered as No. 10-0629902 and has been usefully implemented at road construction sites.

On the other hand, in the related art, in the prior art, the construction of the pavement after applying asphalt to the construction site after cleaning or repairing the pavement for concrete roads, asphalt roads, bridges, etc. Even if the asphalt adhesive is applied to the existing pavement or bridge deck to solve the disadvantage that is not good adhesion, and the new packaging or bridge top plate and the adhesive strength and adhesion between the packaging material, as well as to increase the crack resistance of the packaging material, preventing plastic deformation and In order to improve the waterproof function, the present invention has been completed by focusing on the fact that an epoxy resin composition having increased adhesive strength and ductility is used as an adhesive to obtain a packaging material having improved waterproofness.

An object of the present invention is to bond a pavement material by applying a heat-resistant epoxy resin composition to the construction site during construction or repair of pavement such as concrete or asphalt roads, bridge decks, airport runways, port decks and structures, tunnel walls, and the like. The present invention provides a packaging material waterproof bonding epoxy resin composition and a method of constructing the packaging material, in which physical properties such as Marshall stability and dynamic stability of the packaging material are significantly improved due to increased adhesive strength, ductility, and complex elastic modulus of the cotton.

Another object of the present invention is the packaging material due to detachment or longitudinal cracking, which is a problem in the past due to poor adhesion between the newly constructed packaging material and new bridge top plate due to the properties of the epoxy resin itself having excellent bending rigidity. It is possible to prevent damage, as well as to prevent the lifting due to poor waterproofing function, the generation of residual water, damage to the structure due to chloride penetration, etc. In providing a method.

Epoxy resin composition for waterproofing adhesive packaging material according to the present invention for solving the above problems, 2,2 '-[(1-methylethylidene) bis (4,1-phenyleneoxyoxy represented by the following formula (1) Methylene)] bisoxirane homopolymer {2,2 '-[(1-Methylethylidene) bis (4,1-phenyleneoxymethylene)] bisoxirane homopolymer} 85 to 95% by weight of [[(2-ethyl Hexyl) oxy] methyl] oxirane {[[((2-Ethylhexyl) oxy] methyl] oxyrane}) 5-15% by weight of a mixed subject; 60 to 80% by weight of aminododecane represented by Formula 3 and 20 to 40% by weight of hydroxy-terminated 1,3-butadiene homopolymer represented by Formula 4 It consists of a curing agent is configured, the main agent and the curing agent is characterized in that it is configured by mixing in a weight ratio of 1: 0.5 to 2.

≪ Formula 1 >

(Wherein n = 1 to 5)

<Formula 2>

<Formula 3>

H ₂ N (CH ₂ ) nCH ₃

(Wherein n = 1 to 5)

&Lt; Formula 4 >

(Wherein n = 1 to 5)

And the construction method of the packaging material using the epoxy resin composition for waterproof adhesive of the packaging material of the present invention, in the construction or repairing the packaging material in concrete or asphalt roads, bridge decks, airport runways, port decks and structures, tunnel walls, the packaging material A first step of cleaning the upper surface of the short blast, blower, high pressure airless or attraction; A second step of applying the packaging material waterproof adhesive epoxy resin composition on the upper surface of the cleaning material is completed; Characterized in that the third step of laying concrete or asphalt pavement.

The epoxy resin composition for waterproof bonding of the packaging material of the present invention increases the adhesive strength and ductility of the bonding surface of the packaging material, so that the high elastic modulus and waterproof function of the packaging material are reduced, as well as the tensile deformation is reduced, thus enabling integration between the old and new packaging materials. It has a prolonged effect.

In addition, the packaging material coated and coated with the waterproofing epoxy resin composition for packaging material of the present invention prevents cracking and deformation of the road surface due to an increase in the tensile strength of the joint surface and prevents cracking and breakage of the packaging material due to expansion and expansion, and impact load It is possible to maintain long-term durability as well as to prevent damage to packaging materials due to detachment or longitudinal cracking, and to prevent damage to the structure due to lifting, retention water, and chloride penetration due to poor waterproofing. This prevents complex urban traffic obstacles caused by the repair of roads and structures.

Hereinafter, the operation of the configuration of the present invention will be described in detail, which is intended to illustrate the extent to which one of ordinary skill in the art can easily carry out the invention, and thus the technical of the present invention. It does not mean that the idea and the scope are limited.

The subject matter used in the epoxy resin composition for waterproof adhesion of the packaging material of the present invention is 2,2 ′-[(1-methylethylidene) bis (4,1-phenyleneoxyoxymethylene)] bisoxirane solely represented by the formula (1). A mixture of a polymer and [[(2-ethylhexyl) oxy] methyl] oxirane represented by Chemical Formula 2, wherein the compound represented by Chemical Formula 1 is subjected to the epoxidation reaction of bisphenol-A and Epichlorohydrine. It refers to a diglycidyl ether bisphenol-A type epoxy resin having a molecular weight of 300 to 1,500 and a molecular structure of two or more epoxide groups.

&Lt; Formula 1 >

(Wherein n = 1 to 5)

<Formula 2>

In general, epoxy resins have excellent resistance to plastic deformation, adhesiveness and waterproof performance, durability, and excellent hardenability. However, epoxy resins have properties of premature curing at room temperature. In the present invention, by adding [[(2-ethylhexyl) oxy] methyl] oxirane of the formula (2) to the epoxy resin main body to control the viscosity control and reactivity of the main body, imparting impact resistance and plasticity, such a mixture As the epoxy resin composition is heated, the curing is delayed at room temperature and cured by heat of about 160 ° C., which is a temperature at which the packaging material is placed, thereby exhibiting excellent adhesiveness, workability, and waterproofing after construction.

The subject of the present invention is composed of a mixture of the epoxy resin and [[(2-ethylhexyl) oxy] methyl] oxirane, and based on the total weight of the subject, [[(2-ethylhexyl) oxy] methyl] oxirane is 5 It is preferable to add ˜15% by weight, whereby the epoxy resin has excellent ductility and tensile strength, thereby providing excellent adhesion and durability.

In addition, polyamines and polyamides are generally used as the epoxy resin curing agent. However, the curing agent used in the epoxy resin composition of the present invention is an aminododecane 60 ~ 80 wt%, 20-40 wt% of a hydroxy terminated 1,3-butadiene homopolymer represented by the formula (4) is mixed to use an organic solvent such as xylene or butyl alcohol. It is environmentally friendly because it is not used, the amino dodecane improves the viscosity control and permeability of the epoxy resin composition and at the same time delays the curing time, the hydroxy-terminated 1,3-butadiene homopolymer is cured by reacting with the main material It exhibits adhesion and waterproofness.

<Formula 3>

H ₂ N (CH ₂ ) nCH ₃

(Wherein n = 1 to 5)

&Lt; Formula 4 >

(Wherein n = 1 to 5)

The aminododecane and the hydroxy-terminated 1,3-butadiene homopolymer are mixed at a weight ratio of about 1.5 to 4: 1, and if mixed below the ratio, the viscosity of the epoxy resin composition becomes too high and The permeability to the joint surface is lowered, the workability and construction quality is poor, and when mixed in excess of the above ratio it was confirmed that the adhesive force is lowered.

For the same reason as above, the ratio of the main agent and the curing agent is about 1: 1, and the mixing ratio is most preferable in terms of workability and adhesive strength, and the weight ratio of 1: 0.5 to 2 depending on the conditions of the temperature and humidity to be installed. Mix at a temperature of about 40 ° C and apply by spraying or roller brush.

The packaging material construction method using the epoxy resin composition for waterproof adhesive packaging material according to the present invention, in the construction or repair of the packaging material in concrete or asphalt roads, bridge decks, airport runways, port decks and structures, tunnel walls, A first step of cleaning the upper surface with shot blast, blower, high pressure airless or attraction; A second step of applying the packaging material waterproof adhesive epoxy resin composition on the upper surface of the cleaning material is completed; It is made of a third step of laying concrete or asphalt pavement, and the construction method as described above can be used regardless of the case of installing or repairing the pavement.

In the first step, for repair, cutting surface damaged parts of existing concrete and asphalt roads and bridge pavement with a cutting machine or processing residue after cutting by cutting and breaker, and shot blast, blower and high pressure airless. It is necessary to clean the packing area in advance with the back.

The epoxy resin composition for waterproofing the packaging material used in the second step is to prevent the peeling, destruction and deformation of the surface layer by enhancing the adhesion and waterproofness of the packaging material packaged on the existing road surface or bridge top plate, It is preferable to apply evenly. The epoxy resin composition is applied by manpower or sprayed with equipment depending on the conditions of the field packaging material, the coating amount is about 0.2 ~ 0.8 L / ㎡ is suitable for forming a uniform adhesive layer on the coated surface, and also the upper and lower packaging materials It was found to be the most desirable in terms of interfacial adhesion with, and permeability, workability, and economy.

When explaining an example of the compacted concrete surface surface construction method of the concrete pavement in the third step, the asphalt mixture is produced at 160 ± 20 ℃ high temperature, the pavement mixture is transported to a dump truck and installed as a finisher, 1 Differential voltage is 2 ~ 3 round trips of 10-12ton Macadamel roller at 130 ± 20 ℃, 2nd reciprocating 2 ~ 3 times with 8-10ton tire roller at 90 ± 20 ℃, 3rd voltage is 70 ± 20 ℃ The surface layer is packed by reciprocating 2 ~ 3 times with 7 ~ 8ton tandem roller, and then the packing is completed through surface cleaning process and curing process.

In addition, an example of the method for constructing a concrete compact surface layer of the present invention will be described in the above-described ascon plant or field plant to produce the packaging mixture at a high temperature of 160 ± 20 ℃, transported to a heated ascon mixer truck or field transport vehicle After installation on the construction site, the packaging is completed through surface finishing process and curing process by hand equipment or small roller screed.

As described above, the present invention has been completed through a number of field experiments, the following describes the present invention through a preferred embodiment that can be easily understood and practiced by those skilled in the art.

&Lt; Example 1 >

90 parts by weight of 2,2 '-[(1-methylethylidene) bis (4,1-phenyleneoxyoxymethylene)] bisoxirane homopolymer and [[(2-ethylhexyl) oxy] methyl] oxirane After mixing 10 parts by weight of the main ingredient, and then, 70 parts by weight of aminododecane and 30 parts by weight of hydroxy-terminated 1,3-butadiene homopolymer were mixed to form a curing agent. Epoxy resin composition (trade name: EPO-Coat) was prepared by mixing with a stirrer at a temperature of ℃.

<Example 2>

Epoxy resin packaging material mixture for concrete mixed with 92.7% by weight of high-quality aggregates having a particle diameter of 19 mm or less, 5.3% by weight of EVA resin-based colorless binder containing 20% by weight of heated epoxy resin composition, and 2% by weight of inorganic pigment was The specimens were prepared under the same conditions as in Table 1].

Aggregate and Pigment Heating Temperature

180 ℃ ± 10
Colorless Binder Heating Temperature

160 ℃ ± 10
Epoxy Resin Heating Temperature

60 ℃
Mixing time

3 minutes
Mixing temperature

170 ℃ ± 10
Marshall compaction

50 times on both sides
Marshall compaction temperature

160 ℃ ± 10

&Lt; Comparative Example 1 &

In order to compare with the epoxy resin composition (trade name: EPO-Coat) prepared in Example 1, a general asphalt for road pavement was prepared and an organic solvent was added little by little to prepare an asphalt adhesive having the same viscosity as the epoxy resin composition.

<Experimental Example 1>

The results of comparing the physical properties of the epoxy resin composition (trade name: EPO-Coat) prepared by Example 1 with general asphalt are as shown in [Table 2] below, and also with the asphalt adhesive prepared by Comparative Example 1. Comparative test results of the bond strength is shown in Table 3 below.

Properties

standard
Example 1
asphalt
Remarks

Viscosity at 25 ° C (cps)


subject
1000-5000

2590

6220

ASTM D 2393
Hardener

500-1100
650

Specific gravity at 25 ℃
subject

1.10-1.30
1.15

1.25

ASTM D 1475
Hardener

0.80-1.00
0.88
Tensile Strength (MPa)

> 1.0
6.8
4.1

ASTM D 638
% Elongation

> 100
250
138

Item




Adhesive amount
Adhesion Strength at 20 ℃ (MPa)


Example 1

Comparative Example 1



Adhesion strength with steel plate (kg / ㎡)

0.3

> 2.76
0.98
0.4

> 2.89
1.00
0.8

> 3.15
0.15

Adhesion strength with asphalt pavement surface (kg / ㎡)

0.3

> 2.58
0.92
0.4

> 2.73
0.98

Comparative Example 2

Quality Standards for the Specification of Waterproofing Materials for Bridges in Korea Highway Corporation

&Lt; Comparative Example 3 &

Quality Standards for Waterproofing Materials Specification for Bridge Construction by Korea Express Railway Corporation

<Experimental Example 2>

The measured values constructed using the epoxy resin composition prepared in Example 1 were compared with the standard values according to the quality standards of the crosslink waterproofing material specifications according to Comparative Example 2 and Comparative Example 3 are shown in Table 4 below. same.

Test Items

Comparative Example 2
Comparative Example 3
Example 1
Test Methods
Workability

Work should not interfere

Work should not interfere
no problem
Nonvolatile (%)

Display value within ± 3%
99
Drying time

Within 3 hours
5 minutes







Seal
Performance



The tensile strength
(N / mm2)
No treatment

1.5 or more
3.5 or more
8.8
Alkali treatment

80% or more of no treatment
7.3
Heat treatment

80% or more of no treatment
7.2



Elongation
(%)
No treatment

More than 100
80 or more
367
Alkali treatment

80% or more of no treatment
386
Heat treatment

80% or more of no treatment
411



shear
adhesion
Performance

Shear bond strength
(N / mm2)

-20 ℃

0.80 or more
0.80 or more
5.52

KSF 4932
20 ℃

0.15 or more
0.15 or more
1.03

Shear Adhesive Strain
(%)

-20 ℃

0.5 or more
1.8
20 ℃

1.0 or higher
2.5

Tensile adhesive strength
(N / mm2)

-20 ℃

1.2 or more
2.4
20 ℃

0.6 or more
0.7 or more
1.8
Water resistance

Not pitched
no problem
Chloride ion penetration resistance (coulombs)

100 or less
22
Indentation

No holes

no problem
Heat resistance dimension stability (%)

150 ° C, 30 minutes
Within ± 2.0
-1.2
Fatigue resistance
No balance, tearing or breaking
No balance, tearing or breaking

no problem

Crack resistance
-20 ℃
No balance, tearing or breaking

no problem
Tensile adhesion after immersion 7 days

20 ℃
More than 70% before immersion
89% (1.6 N / ㎡)
※ Heat treatment should be 110 ℃ in tensile performance test.

As shown in the [Table 2] and [Table 3], Example 1 tested with the heated epoxy resin composition (trade name: EPO-Coat) of the present invention, as well as waterproof performance due to excellent adhesion compared to conventional asphalt adhesives It prevents cracking and deformation of pavement and maintains long-term durability, thereby eliminating complicated urban traffic obstacles caused by frequent road maintenance.

In addition, as shown in the above [Table 4], Example 1 tested with the heating epoxy resin composition (trade name: EPO-Coat) of the present invention compared to the standard value of the bridge waterproofing materials required by Korea Expressway Corporation, Korea Express Railway Corporation It can be seen that all the test items show excellent results exceeding.

Therefore, the epoxy resin composition for waterproof adhesive packaging material of the present invention can be substituted, modified, and changed in various ways without departing from the technical spirit of the present invention, pavement of concrete or asphalt roads, bridge deck, airport runway, harbor It can be used in various applications and forms as a waterproof adhesive for integrally bonding the packaging material installed on its upper surface during construction or repair of decks, structures, tunnel walls, and the like.

Claims (4)

2,2 '-[(1-methylethylidene) bis (4,1-phenyleneoxyoxymethylene)] bisoxirane homopolymer represented by the following formula (1) {2,2'-[(1-Methylethylidene) bis (4,1-phenyleneoxymethylene)] bisoxirane homopolymer} 85 to 95% by weight, and [[(2-ethylhexyl) oxy] methyl] oxirane represented by the following formula (2): [[[(2-Ethylhexyl) oxy] methyl] oxyrane } Subjects composed of 5-15% by weight of a mixture;
60 to 80% by weight of aminododecane represented by Formula 3 and 20 to 40% by weight of hydroxy-terminated 1,3-butadiene homopolymer represented by Formula 4 Consisting of a hardener,
Epoxy resin composition for waterproof adhesive packaging material, characterized in that the main material and the curing agent is mixed in a weight ratio of 1: 0.5 to 2.
&Lt; Formula 1 >

(Wherein n = 1 to 5)
(2)

(3)
H ₂ N (CH ₂ ) nCH ₃
(Wherein n = 1 to 5)
&Lt; Formula 4 >

(Wherein n = 1 to 5) In the construction or repair of concrete or asphalt roads, bridge decks, airport runways, port decks and structures, and tunnel walls,
A first step of cleaning the upper surface of the packaging material with a short blast, a blower, a high pressure airless, or a manpower;
A second step of applying a packaging material waterproof adhesive epoxy resin composition (trade name: EPO-Coat) having a coating amount of 0.2 to 0.8 l / m 2 according to claim 1 on the upper surface of the cleaned packaging material;
A third step of laying concrete or asphalt pavement;
Packaging material construction method characterized in that consisting of. The method of claim 2,
Epoxy resin composition (trade name: EPO-Coat) for the packaging material waterproof adhesive in the second step is a packaging material construction method, characterized in that the application by spraying with a manpower or equipment according to the site conditions. delete