Composition for thin layer overlay of cement concrete pavement and Construction Method using the same

Abstract

The present invention relates to a paving material for forming a thin-layer pavement by mixing a main component and a hardener and pouring it over the surface of a concrete road pavement (10) in an overlay manner, wherein the main component comprises 60-85 wt% of 2,2-Bis(4'-glycidyloxyphenyl)propane (YD-128); 5-10 wt% of YD-112 (PEG modified); 1-5 wt% of vinylmethoxysilane; 5-12 wt% of 1,6-Hexanediol Diglycidyl Ether; and 3-8 wt% of n-Butyl Acrylate; and the hardener comprises Benzyl alcohol; 1-Piperazineethanamine polymer with 2,2'-[(1-methylethylidene)bis(4,1phenyleneoxymethylene)bis[oxirane]]; and 1,3-Bis(Aminomethyl) benzene; By presenting a thin-layer overlay packaging material characterized by containing 2,4,6-Tris[(dimethylamino)methyl]phenol, UV resistance is increased, thereby enabling the production of a packaging material with excellent durability, such as adhesion, crack resistance, and water resistance.

Description

Technology Field

[0001] The present invention relates to the field of construction technology, and more specifically, to a thin-layer overlay paving material and a thin-layer overlay paving method using the same. Background Technology

[0002] Concrete bridge decks and pavement structures are susceptible to cracking, spalling, and rebar corrosion due to repetitive traffic loads, changes in temperature and humidity, de-icing salts, and moisture penetration; these factors are major causes of shortened service life.

[0003] Conventional maintenance methods have included full repaving, crack injection repair, and thick overlay paving; however, these methods had drawbacks such as long construction periods, unavoidable traffic closures, and difficulty in ensuring durability relative to cost.

[0004] Accordingly, thin-layer polymer or epoxy-based overlay methods have recently been proposed.

[0005] However, since the surface of road pavements is constantly exposed to direct sunlight, thin-layer pavements are prone to cracking due to UV-induced aging, which in turn leads to a problem of easily losing aggregate fixation strength.

[0006] In other words, thin-layer packaging materials based on conventional technology had a problem in that they lacked excellent durability, such as adhesion, crack resistance, and water resistance, because they had weak UV resistance. Prior art literature

[0007] (Patent Document 0001) KR 10-2869740 B1(Patent Document 0002) KR 10-2688342 B1(Patent Document 0003) KR 10-2678845 B1(Patent Document 0004) KR 10-2667546 B1 The problem to be solved

[0008] The present invention was developed to solve the above-mentioned problems, and aims to provide a thin-layer overlay paving material and a thin-layer overlay paving method using the same, which can obtain a paving body with excellent durability such as adhesion, crack resistance, and waterproofing by increasing UV resistance. means of solving the problem

[0009] To solve the above problem, the present invention relates to a paving material for forming a thin-layer pavement by mixing a main component and a hardener and pouring it over the surface of a concrete road pavement (10) in an overlay manner, wherein the main component comprises 60-85 wt% of 2,2-bis(4'-glycidyloxyphenyl)propane (YD-128); 5-10 wt% of phenylglycidyl ether (YD-112) (PEG modified); 1-5 wt% of vinyl(tri)methoxysilane; 5-12 wt% of 1,6-hexanediol diglycidyl ether; and 3-8 wt% of n-butyl acrylate; and the hardener comprises benzyl alcohol; A thin-layer overlay packaging material is presented, characterized by comprising 1-piperazineethanamine, a polymer with 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)bis[oxirane]]; 1,3-benzenedimethanemin (1,3-Bis(Aminomethyl) benzene); and 2,4,6-tris[(N,N-dimethylamino)methyl]phenol (2,4,6-Tris[(dimethylamino) methyl]phenol).

[0010] The above subject preferably further comprises 0.5 to 3 weight% of 2-(2-hydroxy-5-methylphenyl)benzotriazole (BP-1).

[0011] The above subject preferably further comprises 0.5 to 3 weight percent of bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate.

[0012] The curing agent comprises: 20-30 wt% of the benzyl alcohol; 20-30 wt% of the 1-piperazineethanamine polymer with 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)bis[oxirane]]; 10-20 wt% of the 1,3-benzenedimethane (1,3-Bis(Aminomethyl) benzene); and 5-15 wt% of the 2,4,6-tris[(N,N-dimethylamino)methyl]phenol. It is preferable to include 0.1 to 10 weight% of formaldehyde polymer with 1,3-benzenedimethanamine and phenol; and 0.1 to 5 weight% of phenol.

[0013] The present invention provides a thin-layer overlay paving method using the above-described paving material, comprising: a first paving material laying step of laying the paving material first to form a first paving layer (100) on the surface of a concrete road pavement (10); and a first aggregate laying step of laying aggregate first to form a first aggregate layer (110) on the surface of the first paving layer (100).

[0014] It is preferable to further include a secondary paving material laying step of forming a secondary paving layer (200) by laying the paving material a second time on the surface of the primary aggregate layer (110); and a secondary aggregate laying step of forming a secondary aggregate layer (210) by laying the aggregate a second time on the surface of the secondary paving layer (200).

[0015] It is preferable that the maximum particle size of the above aggregate be 5 mm.

[0016] It is preferable that the thickness of the above primary paving layer (100) be 40 to 60% of the particle size of the aggregate. Effects of the invention

[0017] The present invention provides a thin-layer overlay paving material and a thin-layer overlay paving method using the same, which increases UV resistance to obtain a paving body with excellent durability such as adhesion, crack resistance, and water resistance. Brief explanation of the drawing

[0018] FIG. 1 and below illustrate embodiments of the present invention, Figures 1 and 2 are diagrams of the structure of a pavement body by a thin-layer overlay paving method. Figures 3 to 11 are photographs of the test construction of the thin-layer overlay paving method. Specific details for implementing the invention

[0019] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0020] As illustrated in FIG. 1 and below, the present invention relates to a paving material for forming a thin layer pavement by mixing a main component and a hardener and pouring it over the surface of a concrete road pavement (10).

[0021] The main component is 60–85 wt% of 2,2-bis(4'-glycidyloxyphenyl)propane (YD-128); 5–10 wt% of phenylglycidyl ether (YD-112) (PEG modified); 1–5 wt% of vinyl(tri)methoxysilane; 5–12 wt% of 1,6-hexanediol diglycidyl ether; 3–8 wt% of n-butyl acrylate; and 0.5–3 wt% of 2-(2-hydroxy-5-methylphenyl)benzotriazole (BP-1). It is composed of 0.5 to 3 weight% of bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate. 2,2-bis(4'-glycidyloxyphenyl)propane is a bisphenol A type liquid epoxy resin (DGEBA) series, and its commercial name is YD-128. Since it has two epoxy reactive groups, it has excellent crosslinking reactivity.

[0022] delete

[0023] Phenylglycidyl ether (YD-112) (PEG modified) is a bisphenol A type liquid epoxy resin (DGEBA) series, and refers to an epoxy resin with enhanced flexibility and wet adhesion by introducing PEG (Polyethylene Glycol) chains.

[0024] Vinyl(tri)methoxysilane is a silane coupling agent (silane-based adhesion promoter); the vinyl group reacts or copolymerizes with the polymer / epoxy matrix, and the methoxy siloxy group forms silanol (Si-OH) through hydrolysis, resulting in excellent bonding strength to inorganic surfaces. 1,6-Hexanediol Diglycidyl Ether is an aliphatic diglycidyl ether-type reactive diluent that reduces viscosity, imparts flexibility, and maintains reactivity. n-Butyl Acrylate is an acrylic monomer (soft monomer) responsible for flexibility and crack-following properties. 2-(2-Hydroxy-5-methylphenyl)benzotriazole (BP-1) is a benzotriazole-based ultraviolet absorber (UV As an absorber, it primarily absorbs ultraviolet rays in the UV-B to UV-A (280 to 360 nm) range.

[0025] delete

[0026] delete

[0027] delete

[0028] This is a light-stabilizing additive that converts ultraviolet rays into heat to inhibit polymer chain degradation. Bis(1,2,2,6,6-phentamentyl-4-piperidey)sebacate is a HALS (Hindered Amine Light Stabilizer) class light-stabilizer that removes or regenerates radicals generated by ultraviolet rays.

[0029] delete

[0030] It does not absorb UV, but maintains long-term weather resistance by repeatedly eliminating radicals generated by photodegradation.

[0031] The curing agent comprises 20-30 wt% of benzyl alcohol; 20-30 wt% of 1-piperazineethanamine polymer with 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)bis[oxirane]]; 10-20 wt% of 1,3-benzenedimethanemin (1,3-Bis(Aminomethyl) benzene); and 5-15 wt% of 2,4,6-tris[(N,N-dimethylamino)methyl]phenol. It is composed of 0.1 to 10 wt% of formaldehyde polymer with 1,3-benzenedimethanamine and phenol; and 0.1 to 5 wt% of phenol.

[0032] As mentioned above, the surface of road pavements is constantly exposed to direct sunlight, and thin-layer pavements are prone to cracking due to aging caused by UV rays, which consequently leads to a problem of easily losing aggregate fixation strength.

[0033] The packaging material according to the present invention has the advantage of preventing the occurrence of cracks and maintaining aggregate fixation strength for a long period, even though it is a thin-layer packaging constantly exposed to direct sunlight, because UV resistance is increased as a UV absorber and a light stabilizer are mixed into the main component.

[0035] Hereinafter, the test details and results for verifying the physical properties (UV resistance, etc.) of the packaging material according to the present invention will be described.

[0036] As a subject, the tensile strength and elongation of an epoxy resin composed of 2,2-bis(4'-glycidyloxyphenyl)propane (YD-128); phenylglycidyl ether (YD-112) (PEG modified); vinyl(tri)methoxysilane; 1,6-hexanediol diglycidyl ether; and n-butyl acrylate were tested. (KS M ISO 527)

[0037] 1-1 1-2 1-3 1-4 1-5 2,2-Bis(4'-glycidyloxyphenyl)propane 73.3 73.3 73.3 73.3 73.3 YD-112 (PEG variant) 7.2 7.2 7.2 7.2 7.2 Vinylmethoxysilane 3.6 3.6 3.6 3.6 3.6 1,6-Hexanediol Diglycidyl Ether 15.9 13.4 10.9 8.4 5.9 n-Butyl Acrylate 0 2.5 5 7.5 10

[0038] Table 1 is a formulation table for testing tensile strength and elongation (Examples 1-1 to 1-5 of the present invention, units are weight%), in which 73.3 weight% of 2,2-bis(4'-glycidyloxyphenyl)propane (YD-128); 7.2 weight% of phenylglycidyl ether (YD-112) (PEG modified); and 3.6 weight% of vinyl(tri)methoxysilane are fixed, while the amount of n-butyl acrylate is varied by 0 to 10 weight%, and the amount of 1,6-hexanediol diglycidyl ether is varied by 15.9 to 5.9 weight%.

[0039] 1-1 1-2 1-3 1-4 1-5 Tensile strength (MPa) 32.4 24.3 15.7 10.8 7.5 Elongation at break (%) 9.4 27.7 43.6 54.1 83.2

[0040] Table 2 shows the test results of tensile strength and elongation (at break) for Examples 1-1 to 1-5 of the present invention.

[0041] Tensile strength and elongation were found to be inversely proportional, and since the optimal tensile strength is known to be 7.6 to 34.5 MPa and the optimal elongation is known to be 30 to 80%, the formulation of Examples 1-3 (n-Butyl Acrylate 5 wt%) was selected as the optimal formulation.

[0042] As a subject, 2,2-Bis(4'-glycidyloxyphenyl)propane (YD-128); phenylglycidyl ether (YD-112) (PEG modified); vinyl(tri)methoxysilane; 1,6-hexanediol diglycidyl ether; n-butyl acrylate; 2-(2-hydroxy-5-methylphenyl)benzotriazole (BP-1); A test was conducted on the gloss (degree) and gloss retention (%) performance of an epoxy resin composed of bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate.

[0043] Comparative Example 2-1 Comparative Example 2-2 Comparative Example 2-3 Example 2-1 Example 2-2 Example 2-3 2,2-Bis(4'-glycidyloxyphenyl)propane 69.8 69.8 69.8 69.8 69.8 69.8 YD-112 (PEG variant) 6.8 6.8 6.8 6.8 6.8 6.8 Vinylmethoxysilane 3.4 3.4 3.4 3.4 3.4 3.4 1,6-Hexanediol Diglycidyl Ether 15.0 12.0 12.0 12.0 12.0 12.0 n-Butyl Acrylate 5.0 5.0 5.0 5.0 5.0 5.0 2-(2-Hydroxy-5-methylphenyl)benzotriazole (BP-1) 3.0 1.5 Bis(1,2,2,6,6-phentamentyl-4-piperidey)sebacate 3.0 1.5 Benzotriazole Derivatives (Tinosorb M) 3.0 Ethylene Vinyl Acetate co-polymers 3.0

[0044] Table 3 is a formulation table for testing (Examples 2-1 to 2-3 of the present invention, Comparative Examples 2-1 to 2-3).

[0045] Example 2-1 of the present invention incorporates 2-(2-hydroxy-5-methylphenyl)benzotriazole (BP-1)) (ultraviolet absorber), Example 2-2 incorporates bis(1,2,2,6,6-pentamethyl-4-piperidyl)sebacate (light stabilizer), and Example 2-3 incorporates both the ultraviolet absorber and the light stabilizer.

[0046] Comparative Example 2-1 does not contain any material for increasing UV resistance, and Comparative Examples 2-2 and 2-3 contain materials conventionally used for increasing UV resistance (Benzotriazole Derivatives, Ethylene Vinyl Acetate co-polymers).

[0047]

[0048] Table 4 shows the test results regarding the gloss (degree) and gloss retention (%) performance for Examples 2-1 to 2-3 and Comparative Examples 2-1 to 2-3 of the present invention.

[0049] The test specimens were exposed to UV light for 936 hours to check the gloss and gloss retention, and at the same time, tensile strength and elongation were also measured.

[0050] Examples 2-1 to 2-3 and Comparative Examples 2-2 and 2-3 of the present invention were found to have sufficient UV resistance by satisfying the condition of maintaining gloss of 70% or more after more than 700 hours of UV exposure.

[0051] However, as described above, the optimal tensile strength is known to be 7.6 to 34.5 MPa and the optimal elongation is 30 to 80%, and while Examples 2-1 to 2-3 of the present invention sufficiently satisfy this, Comparative Examples 2-2 and 2-3 were found not to satisfy it.

[0052] Accordingly, it was confirmed that the embodiments of the present invention not only possess sufficient UV resistance but also excellent tensile strength and elongation.

[0054] FIGS. 3 to 11 are photographs of a test process taken to verify the effect of the thin-layer overlay paving method according to the present invention.

[0055] The thin-layer overlay paving method using the above packaging material is carried out by the following process.

[0056] The surface of the concrete road pavement (10) is pretreated by shot blasting, etc. (Fig. 3) and cleaned (Fig. 4).

[0057] The main component and the hardener are weighed (Fig. 5) and mixed to manufacture the packaging material (Fig. 6).

[0058] On the surface of the concrete road pavement (10), a paving material is laid first to form a first paving layer (100). (Fig. 7)

[0059] On the surface of the primary paving layer (100), aggregate is laid first to form a primary aggregate layer (110) (Fig. 8), and excess aggregate is cleaned (Fig. 9).

[0060] It is preferable that the maximum particle size of the aggregate is 5 mm, and the thickness of the primary paving layer (100) is 40 to 60% of the particle size of the aggregate.

[0061] The work may be completed with only the construction of the above first paving layer (100) and first aggregate layer (110), or if necessary, the same process may be repeated.

[0062] In this case, a paving material is laid secondarily on the surface of the primary aggregate layer (110) to form a secondary paving layer (200). (Fig. 7)

[0063] On the surface of the secondary paving layer (200), aggregate is laid secondarily to form a secondary aggregate layer (210). (Fig. 8)

[0064] Figures 10 and 11 are photographs of a pavement in a state where the thin-layer overlay paving method has been completed.

[0066] The foregoing merely describes some preferred embodiments that can be implemented by the present invention. As is well known, the scope of the present invention should not be interpreted as being limited to the above embodiments, and all technical concepts that share the fundamental principles with the technical concept of the present invention described above shall be considered to be included within the scope of the present invention. Explanation of the symbols

[0067] 10 : Concrete road pavement 100 : Primary pavement layer 110: Primary aggregate layer 200: Secondary pavement layer 210: Secondary aggregate layer

Claims

Claim 1 A paving material for forming a thin-layer pavement by mixing a main component and a hardener and pouring it in an overlay manner on the surface of a concrete road pavement (10), wherein the main component comprises 60-85 wt% of 2,2-Bis(4'-glycidyloxyphenyl)propane (YD-128); 5-10 wt% of phenylglycidyl ether (YD-112) (PEG modified); 1-5 wt% of vinyl (tri)methoxysilane; 5-12 wt% of 1,6-hexanediol diglycidyl ether; and 3-8 wt% of n-butyl acrylate; and the hardener comprises benzyl alcohol; 1-piperazine ethanolamine, A thin-layer overlay packaging material characterized by comprising: a polymer with 2,2-(1-methylethylidene)bis(4,1-phenyleneoxymethylene)bis(oxirane) (1-Piperazineethanamine polymer with 2,2'-[(1-methylethylidene)bis(4,1phenyleneoxymethylene)bis[oxirane]]); 1,3-benzenedimethanemin (1,3-Bis(Aminomethyl) benzene); and 2,4,6-tris[(N,N-dimethylamino)methyl]phenol (2,4,6-Tris[(dimethylamino) methyl]phenol). Claim 2 A thin-layer overlay packaging material according to claim 1, characterized in that the subject further comprises 0.5 to 3 weight% of 2-(2-hydroxy-5-methylphenyl)benzotriazole (BP-1). Claim 3 A thin-layer overlay packaging material according to claim 1, characterized in that the subject further comprises 0.5 to 3 weight% of bis(1,2,2,6,6-phentamentyl-4-piperidey)sebacate. Claim 4 In claim 1, the curing agent comprises: 20-30 wt% of the benzyl alcohol; 20-30 wt% of the 1-piperazineethanamine polymer with 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxymethylene)bis[oxirane]]; 10-20 wt% of the 1,3-benzenedimethanemin (1,3-Bis(Aminomethyl) benzene); 5-15 wt% of the 2,4,6-tris[(N,N-dimethylamino)methyl]phenol; and a polymer of 1,3-benzenedimethanemin and phenol (formaldehyde A thin-layer overlay packaging material characterized by comprising 0.1~10 wt% of polymer (with 1,3-benzenedimethanamine and phenol); and 0.1~5 wt% of phenol. Claim 5 A thin-layer overlay paving method using a paving material according to any one of claims 1 to 4, characterized by comprising: a first paving material laying step of laying the paving material first on the surface of a concrete road pavement (10) to form a first paving layer (100); and a first aggregate laying step of laying aggregate first on the surface of the first paving layer (100) to form a first aggregate layer (110). Claim 6 A thin-layer overlay paving method according to claim 5, further comprising: a secondary paving material laying step of forming a secondary paving layer (200) by laying the paving material secondarily on the surface of the primary aggregate layer (110); and a secondary aggregate laying step of forming a secondary aggregate layer (210) by laying the aggregate secondarily on the surface of the secondary paving layer (200). Claim 7 A thin-layer overlay paving method according to claim 5, characterized in that the maximum particle size of the aggregate is 5 mm. Claim 8 A thin-layer overlay paving method according to claim 7, characterized in that the thickness of the primary paving layer (100) is 40 to 60% of the particle size of the aggregate.

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