KR20240113447A - Asphaltconcrete with improved durability - Google Patents
Asphaltconcrete with improved durability Download PDFInfo
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- KR20240113447A KR20240113447A KR1020240092003A KR20240092003A KR20240113447A KR 20240113447 A KR20240113447 A KR 20240113447A KR 1020240092003 A KR1020240092003 A KR 1020240092003A KR 20240092003 A KR20240092003 A KR 20240092003A KR 20240113447 A KR20240113447 A KR 20240113447A
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- asphalt
- asphalt concrete
- aggregate
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- 239000011384 asphalt concrete Substances 0.000 title claims abstract description 114
- 239000010426 asphalt Substances 0.000 claims abstract description 70
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 239000010734 process oil Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 17
- 238000005338 heat storage Methods 0.000 claims abstract description 16
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- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 claims abstract description 14
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims abstract description 12
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 8
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims abstract description 8
- 239000004816 latex Substances 0.000 claims abstract description 6
- 229920000126 latex Polymers 0.000 claims abstract description 6
- BJRMDQLATQGMCQ-UHFFFAOYSA-N C=C.C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 Chemical compound C=C.C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 BJRMDQLATQGMCQ-UHFFFAOYSA-N 0.000 claims abstract description 4
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- 235000010469 Glycine max Nutrition 0.000 description 1
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- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/2676—Polystyrenes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/022—Carbon
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
- C04B18/167—Recycled materials, i.e. waste materials reused in the production of the same materials
-
- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/36—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L57/00—Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C08L57/02—Copolymers of mineral oil hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0071—Phase-change materials, e.g. latent heat storage materials used in concrete compositions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/54—Pigments; Dyes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
- C08L2555/84—Polymers comprising styrene, e.g., polystyrene, styrene-diene copolymers or styrene-butadiene-styrene copolymers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Civil Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
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- Compositions Of Macromolecular Compounds (AREA)
Abstract
본 발명은 골재, 개질 아스팔트, 개질 탄성칩를 혼합하여 형성되는 내구성이 향상되는 아스팔트콘크리트에 있어서, 상기 개질 아스팔트는 아스팔트 100중량부에 스티렌뷰타디엔스티렌(SBS), 스티렌뷰타디엔고무(SBR), SBR라텍스, 스티렌이소프렌스티렌(SIS), 스티렌에틸렌뷰타디엔스티렌(SEBS) 중 어느 하나 또는 2이상의 폴리머 칩 3~20중량부, 프로세스 오일 0.1~10중량부가 혼합되어 형성되고, 상기 개질 탄성칩은 상기 개질 아스팔트와 동일한 폴리머 칩, 점착부여수지, 프로세스 오일로 형성되며, 상기 개질 탄성칩에 축열재가 더 포함되고, 상기 골재 100중량부에 개질 아스팔트 3~10중량부, 개질 탄성칩 1~8중량부가 혼합되는 내구성이 향상되는 아스팔트콘크리트에 관한 것이다.The present invention relates to asphalt concrete with improved durability formed by mixing aggregate, modified asphalt, and modified elastic chips, wherein the modified asphalt includes styrene butadiene styrene (SBS), styrene butadiene rubber (SBR), and SBR in 100 parts by weight of asphalt. It is formed by mixing 3 to 20 parts by weight of polymer chips of one or two or more of latex, styrene isoprene styrene (SIS), and styrene ethylene butadiene styrene (SEBS), and 0.1 to 10 parts by weight of process oil, and the modified elastic chip is It is formed of the same polymer chips as asphalt, tackifying resin, and process oil, and the modified elastic chip further includes a heat storage material, and 3 to 10 parts by weight of modified asphalt and 1 to 8 parts by weight of modified elastic chip are mixed with 100 parts by weight of the aggregate. It is about asphalt concrete with improved durability.
Description
본 발명은 내구성이 향상되는 아스팔트콘크리트에 관한 것으로 저소음 아스팔트콘크리트 내부의 결합력을 강화하여 내구성이 향상되는 아스팔트콘크리트에 관한 것이다.The present invention relates to asphalt concrete with improved durability, and to low-noise asphalt concrete with improved durability by strengthening the internal bonding force of the asphalt concrete.
일반적으로 아스팔트콘크리트 포장도로는 아스팔트와 골재를 혼합가열하여 얻은 것을 아스팔트콘크리트로 포장되는 도로로 차량의 통행을 위해 고속도로 등에 사용되고 있다.In general, asphalt concrete pavement is a road paved with asphalt concrete obtained by mixing and heating asphalt and aggregate and is used on highways, etc. for the passage of vehicles.
아스팔트콘크리트는 가열된 아스팔트와 골재의 혼합하여 아스팔트콘크리트로 제조되는 것으로 상기 아스팔트는 석유를 정제할 때 잔류물로 얻어지는 고체나 반고체의 검은색이나 흑갈색 탄화수소 화합물로 고온에서는 액체상태가 되고, 저온에서는 강도가 높은 고체화되어 도포포장에 주로 사용되고 있다.Asphalt concrete is manufactured by mixing heated asphalt and aggregate. Asphalt is a solid or semi-solid black or dark brown hydrocarbon compound obtained as a residue when refining petroleum. It is in a liquid state at high temperatures and loses strength at low temperatures. It is highly solidified and is mainly used for coating and packaging.
아스팔트로콘크리트로 형성되는 도로는 많은 차량이 통행하는 길로 큰 소음이 발생되어 현재까지는 차량통행 소음을 소음 차단벽을 사용하여 소음을 막아왔다. 이것으로 충분히 소음을 감소시키지 못하게 되면 소음 방지창을 건물에 설치하여 소음을 차단하는 방법을 사용하였다.Roads made of asphalt concrete generate a lot of noise due to the passage of many vehicles, so until now, noise barriers have been used to block traffic noise. If this did not sufficiently reduce the noise, a method of blocking the noise was used by installing noise-prevention windows in the building.
그러나 소음 차단벽이나 소음 방지창의 설치에는 고가의 재료비와 설치비용등으로 인하여 경제적인 문제가 부가되며, 소음 차단벽이나 소음 방지창을 설치하였어도 소음의 차단에 미흡한 경우에는 차량의 속도를 제한하거나 교통의 흐름을 통제하여 소음을 줄일 수 밖에 없었다. However, the installation of noise barriers or noise-preventing windows poses economic problems due to the expensive material and installation costs. Even if noise-blocking walls or noise-preventing windows are installed, if they are insufficient to block noise, the speed of vehicles must be restricted or traffic traffic may be restricted. There was no choice but to reduce noise by controlling the flow.
따라서, 소음 발생이 적게 발생되는 저소음 아스팔트콘크리트가 개발되었다.Therefore, low-noise asphalt concrete that generates less noise was developed.
종래의 저소음 아스팔트콘크리트는 아스팔트콘크리트 내부의 공극률을 높여 이어와 노면의 마찰음 및 파열음을 공극이 흡수하여 소음을 저감시키는 것으로 배수성 아스팔트콘크리트와 유사한 구성을 가지고 있다.Conventional low-noise asphalt concrete has a similar structure to drained asphalt concrete by increasing the porosity inside the asphalt concrete to reduce noise by absorbing friction and bursting sounds from the road surface.
상기와 같이 아스팔트콘크리트 내부의 공극률을 높인 저소음 아스팔트는 대한민국 등록특허 제0268067호, 제1292065호와 같이 굵은골재, 잔골재, 채움재의 비율을 조절하여 공극률을 크게 하여 저소음 기능을 가지게 된다.As described above, low-noise asphalt that increases the porosity inside asphalt concrete has a low-noise function by increasing the porosity by adjusting the ratio of coarse aggregate, fine aggregate, and filler, as shown in Korean Patent Nos. 0268067 and 1292065.
그러나, 상기와 같이 공극률이 높은 저소음 아스팔트콘크리트는 내부의 아스팔트가 물, 공기 등과 빈번히 접촉하여 노화가 촉진되고 아스팔트 함량이 낮아 골재의 탈리와 균열 등이 빈번히 발생하고 있다.However, in low-noise asphalt concrete with a high porosity as described above, aging is accelerated because the asphalt inside is frequently in contact with water and air, and the asphalt content is low, causing frequent detachment and cracking of aggregates.
최근에는 아스팔트콘크리트 내부에 공극률을 높이는 대신 탄성 수지를 함유시켜 탄성 수지로 인해 아스팔트콘크리트의 유동성을 높이고 탄성 수지가 소음을 흡수하도록 하는 저소음 아스팔트콘크리트가 개발되었다.Recently, low-noise asphalt concrete has been developed that contains elastic resin instead of increasing the porosity inside asphalt concrete, thereby increasing the fluidity of asphalt concrete and allowing the elastic resin to absorb noise.
대한민국 등록특허 제1029912호, 제1624288호는 아스팔트콘크리트 내부에 스티렌뷰타디엔스티렌(SBS),라텍스, 스티렌이스프렌스티렌(SIS), 폐타이어 고무 등으로 형성되는 고탄성 수지를 첨가하여 저소음 아스팔트콘크리트가 개시되어 있다.Republic of Korea Patent Nos. 1029912 and 1624288 disclose low-noise asphalt concrete by adding highly elastic resins made of styrene butadiene styrene (SBS), latex, styrene-styrene (SIS), and waste tire rubber to the inside of asphalt concrete. It is done.
그러나, 스티렌뷰타디엔스티렌(SBS),라텍스, 스티렌이스프렌스티렌(SIS), 폐타이어 고무 등의 고탄성 수지가 함유된 저소음 아스팔트콘크리트는 고탄성 수지와 아스팔트 사이간의 결합, 고탄성 수지와 골재간의 결합이 약하게 부착되어 내구성의 문제로 저소음 아스팔트콘크리트의 균열의 문제가 발생되고 있다.However, low-noise asphalt concrete containing high-elasticity resins such as styrene-butadiene-styrene (SBS), latex, styrene-styrene (SIS), and waste tire rubber has weak bonds between the high-elasticity resin and asphalt and between the high-elasticity resin and aggregate. There is a problem of cracking of low-noise asphalt concrete due to durability issues.
또한, 동절기의 아스팔트 콘크리트로 포장된 도로의 경우에는 아스팔트 콘크리트가 수분을 흡수하여 도로 표면이 쉽게 결빙되고, 보온효과로 인하여 쉽게 얼음이 녹지 않거나, 녹은 물이 기온강하로 인하여 재결빙되는 일명 "블랙 아이스"를 형성하여 차량, 보행자의 미끄럼을 유발하여 교통사고 또는 상해사고가 자주 발생하게 된다.In addition, in the case of roads paved with asphalt concrete in the winter, the road surface easily freezes as the asphalt concrete absorbs moisture, and the ice does not easily melt due to the thermal insulation effect, or the melted water refreezes due to a drop in temperature, a so-called "black" phenomenon. It forms “ice” and causes vehicles and pedestrians to slip, resulting in frequent traffic accidents and injuries.
상기와 같은 문제를 해결하기 위하여 대한민국 등록특허 제1471837호에서는 제설제 흡수력을 높여 결빙 현상을 방지하는 기술이 개시되어 있으나, 제설제 없이는 결빙 현장을 방지할 수 없어 제설제를 살포해야하는 문제가 있었다.In order to solve the above problem, Republic of Korea Patent No. 1471837 discloses a technology to prevent freezing by increasing the absorption capacity of the snow remover. However, there was a problem that the frozen site could not be prevented without the snow remover, so the snow remover had to be sprayed.
본 발명은 상기의 종래 기술의 문제점을 해결하기 위한 것으로 탄성 수지로 형성되는 개질 탄성칩을 활용하여 아스팔트콘크리트에 저소음 기능을 부여하면서, 개질 탄성칩와 아스팔트간의 결합력 및 개질 탄성칩와 골재간의 결합력을 크게 향상하여 내구성이 향상되는 아스팔트콘크리트를 제공하는 것을 목적으로 한다.The present invention is intended to solve the problems of the above-described prior art. By utilizing a modified elastic chip formed of an elastic resin, the present invention provides a low-noise function to asphalt concrete, while significantly improving the bonding force between the modified elastic chip and asphalt and the bonding force between the modified elastic chip and the aggregate. The purpose is to provide asphalt concrete with improved durability.
또한, 아스팔트콘크리트의 개질 탄성칩에 축열재가 함유되어 열을 축척하여 일정이하의 온도에서 아스팔트콘크리트가 발열되어 결빙 현상을 방지할 수 있는 내구성이 향상되는 아스팔트콘크리트를 제공하는 것을 목적으로 한다.In addition, the purpose is to provide asphalt concrete with improved durability that can prevent freezing by generating heat at a temperature below a certain level by containing a heat storage material in the modified elastic chips of asphalt concrete to accumulate heat.
또한, 프리믹싱형 저소음 아스팔트콘크리트로 제조방식으로 제조 및 시공성이 우수한 아스팔트콘크리트를 제공하는 것을 목적으로 한다.In addition, the purpose is to provide asphalt concrete with excellent manufacturing and constructability by manufacturing with premixed low-noise asphalt concrete.
본 발명은 골재, 개질 아스팔트, 개질 탄성칩를 혼합하여 형성되는 내구성이 향상되는 아스팔트콘크리트에 있어서, 상기 개질 아스팔트는 아스팔트 100중량부에 스티렌뷰타디엔스티렌(SBS), 스티렌뷰타디엔고무(SBR), SBR라텍스, 스티렌이소프렌스티렌(SIS), 스티렌에틸렌뷰타디엔스티렌(SEBS) 중 어느 하나 또는 2이상의 폴리머 칩 3~20중량부, 프로세스 오일 0.1~10중량부가 혼합되어 형성되고, 상기 개질 탄성칩은 상기 개질 아스팔트와 동일한 폴리머 칩, 점착부여수지, 프로세스 오일로 형성되며, 상기 개질 탄성칩에 축열재가 더 포함되고, 상기 골재 100중량부에 개질 아스팔트 3~10중량부, 개질 탄성칩 1~8중량부가 혼합되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.The present invention relates to asphalt concrete with improved durability formed by mixing aggregate, modified asphalt, and modified elastic chips, wherein the modified asphalt includes styrene butadiene styrene (SBS), styrene butadiene rubber (SBR), and SBR in 100 parts by weight of asphalt. It is formed by mixing 3 to 20 parts by weight of polymer chips of one or two or more of latex, styrene isoprene styrene (SIS), and styrene ethylene butadiene styrene (SEBS), and 0.1 to 10 parts by weight of process oil, and the modified elastic chip is It is formed of the same polymer chips as asphalt, tackifying resin, and process oil, and the modified elastic chip further includes a heat storage material, and 3 to 10 parts by weight of modified asphalt and 1 to 8 parts by weight of modified elastic chip are mixed with 100 parts by weight of the aggregate. Provides asphalt concrete with improved durability, which is characterized by being.
또한, 상기 개질 탄성칩은 폴리머 칩 100중량부에 점착부여수지 5~30중량부, 프로세스 오일 1~10중량부, 축열재 1~30중량부가 혼합되어 형성되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the modified elastic chip is an asphalt with improved durability, which is formed by mixing 5 to 30 parts by weight of tackifying resin, 1 to 10 parts by weight of process oil, and 1 to 30 parts by weight of heat storage material with 100 parts by weight of polymer chips. Provide concrete.
또한, 상기 아스팔트는 아스팔트 PG등급 58-22, 64-22, 70-22, 76-22, 76-34, 82-28, 82-34 중 어느 하나 또는 2 이상 혼합물인 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the asphalt has improved durability, characterized in that it is any one of asphalt PG grades 58-22, 64-22, 70-22, 76-22, 76-34, 82-28, 82-34, or a mixture of two or more. We provide asphalt concrete.
또한, 상기 축열재는 블랙카본, 탄소나노튜브, 흑연 중에서 선택되는 하나 또는 2이상의 혼합물인 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the heat storage material provides asphalt concrete with improved durability, wherein the heat storage material is one or a mixture of two or more selected from black carbon, carbon nanotubes, and graphite.
또한, 상기 아스팔트콘크리트에 무기질 안료를 포함시켜 시인성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리를 제공한다.In addition, asphalt concrete with improved durability is provided, which has visibility by including an inorganic pigment in the asphalt concrete.
또한, 상기 골재는 재생골재와 일반골재를 중량비 10:90~80:20로 혼합한 혼합골재를 사용하여 형성되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the aggregate provides asphalt concrete with improved durability, which is formed using mixed aggregate mixed with recycled aggregate and general aggregate at a weight ratio of 10:90 to 80:20.
또한, 상기 골재는 굵은골재 45~85 중량%, 잔골재 10~45 중량%, 채움재 5~10 중량%로 사용하여 내유동성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the aggregate is used in an amount of 45 to 85% by weight of coarse aggregate, 10 to 45% by weight of fine aggregate, and 5 to 10% by weight of filler to provide asphalt concrete with improved durability, characterized by having fluid resistance.
또한, 상기 골재는 굵은골재 60~73 중량%, 잔골재 25~35 중량%, 채움재 2~5 중량%로 사용하여 저소음 및 내유동성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the aggregate is used at 60 to 73% by weight of coarse aggregate, 25 to 35% by weight of fine aggregate, and 2 to 5% by weight of filler to provide asphalt concrete with improved durability, characterized by low noise and fluid resistance.
또한, 상기 골재는 굵은골재 70~90 중량%, 잔골재 7~27 중량%, 채움재 3~8 중량%로 사용하여 배수성 및 투수성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the aggregate is used at 70 to 90% by weight of coarse aggregate, 7 to 27% by weight of fine aggregate, and 3 to 8% by weight of filler to provide asphalt concrete with improved durability, characterized by drainage and water permeability.
또한, 상기 아스팔트콘크리트는 하부에 10~20㎜, 상부에 5~8㎜ 골재를 사용하여 복층포장으로 형성되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트를 제공한다.In addition, the asphalt concrete provides improved durability, characterized in that it is formed as a double-layer pavement using aggregates of 10 to 20 mm in the lower part and 5 to 8 mm in the upper part.
또한, 상기의 아스팔트콘크리트를 시공하고, 그 시공면에 유면접착제를 도포한 후, 입도 1~15㎜의 칼라스톤과 접착제가 혼합된 칼라투수스톤이 적층되어 색상을 가지는 것을 특징으로 하는 아스팔트콘크리트 포장체를 제공한다.In addition, after constructing the above-described asphalt concrete and applying an oil-level adhesive to the construction surface, asphalt concrete paving is characterized in that color permeable stones mixed with color stones with a particle size of 1 to 15 mm and adhesive are laminated to have color. Provides a sieve.
상기와 같이 본 발명에 따른 아스팔트콘크리트는 개질 아스팔트에 함유되는 폴리머 칩과 개질 탄성칩에 함유되는 폴리머 칩이 동일 성분으로 개질 탄성칩와 아스팔트간의 결합력 및 개질 탄성칩 와 골재간의 결합력을 크게 향상하여 저소음 아스팔트콘크리트의 내구성을 향상시킨 효과가 있다.As described above, in the asphalt concrete according to the present invention, the polymer chips contained in the modified asphalt and the polymer chips contained in the modified elastic chips are the same component, and the bonding strength between the modified elastic chips and asphalt and the bonding strength between the modified elastic chips and the aggregate are greatly improved, thereby producing low-noise asphalt. It has the effect of improving the durability of concrete.
또한, 아스팔트콘크리트 내부에 개질 탄성칩이 함유되어 저소음 기능이 향상되는 효과가 있다.In addition, modified elastic chips are contained inside asphalt concrete, which has the effect of improving low noise performance.
또한, 아스팔트콘크리트에 함유되는 개질 탄성칩에 축열재가 함유되어 겨울 철에 결빙 방지하여 도로의 미끄럼을 최소화할 수 있는 효과가 있다.In addition, the modified elastic chips contained in asphalt concrete contain heat storage material, which has the effect of preventing freezing in winter and minimizing road slipping.
또한, 골재와 혼합되기 전에 아스팔트에 폴리머 칩를 함유시켜 개질화 하는 프리믹싱형 저소음 아스팔트콘크리트로 제조방식으로 제조 및 시공성이 우수한 효과가 있다.In addition, it is a premixed low-noise asphalt concrete that is reformed by adding polymer chips to asphalt before mixing with aggregate, resulting in excellent manufacturing and constructability.
이하 본 발명의 바람직한 일실시예를 상세히 설명하기로 한다. 본 발명을 설명함에 있어, 관련된 공지기능 혹은 구성에 대한 구체적인 설명은 본 발명의 요지를 모호하지 않게 하기 위하여 생략한다.Hereinafter, a preferred embodiment of the present invention will be described in detail. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order to not obscure the gist of the present invention.
본 명세서에서 사용되는 정도의 용어 '약', '실질적으로' 등은 언급된 의미에 고유한 제조 및 물질 허용오차가 제시될 때 그 수치에서 또는 그 수치에 근접한 의미로 사용되고, 본 발명의 이해를 돕기 위해 정확하거나 절대적인 수치가 언급된 개시 내용을 비양심적인 침해자가 불법적으로 부당하게 이용하는 것을 방지하기 위해 사용된다.As used herein, the terms 'about', 'substantially', etc. are used to mean at or close to the numerical value when manufacturing and material tolerances inherent in the stated meaning are presented, and are used to enhance the understanding of the present invention. Precise or absolute figures are used to assist in preventing unscrupulous infringers from illegally exploiting the stated disclosure.
본 발명은 골재, 개질 아스팔트, 개질 탄성칩를 혼합하여 골재 사이에 개질 탄성칩이 함유되도록 형성되는 아스팔트콘크리트로 도로에서 발생되는 소음을 저감시키는 아스팔트콘크리트에 관한 것이다.The present invention relates to asphalt concrete that reduces noise generated on roads by mixing aggregate, modified asphalt, and modified elastic chips to form modified elastic chips between the aggregates.
본 발명의 아스팔트콘크리트는 상기 골재 100중량부에 개질 아스팔트 3~10중량부, 개질 탄성칩 1~8중량부가 혼합되어 형성된다.The asphalt concrete of the present invention is formed by mixing 3 to 10 parts by weight of modified asphalt and 1 to 8 parts by weight of modified elastic chips with 100 parts by weight of the aggregate.
상기 골재는 비용절감 및 환경을 고려하여 폐아스팔트콘크리트 재생골재를 사용하는 것이 바람직할 것이다.It would be preferable to use reclaimed asphalt concrete aggregate as the aggregate in consideration of cost savings and the environment.
상기 재생골재는 골재 중 10중량%이상 함유되는 것이 바람직하며 더욱 바람직하게는 50중량%이상 사용되는 것이다.The recycled aggregate is preferably contained at least 10% by weight of the aggregate, and more preferably at least 50% by weight.
본 발명의 개질 아스팔트는 프리믹스형으로 아스팔트, 스티렌뷰타디엔스티렌(SBS), 스티렌뷰타디엔고무(SBR), SBR라텍스, 스티렌이소프렌스티렌(SIS), 스티렌에틸렌뷰타디엔스티렌(SEBS) 중 어느 하나 또는 2이상의 폴리머 칩, 프로세스 오일로 형성된다.The modified asphalt of the present invention is a premix type and consists of one or two of asphalt, styrene butadiene styrene (SBS), styrene butadiene rubber (SBR), SBR latex, styrene isoprene styrene (SIS), and styrene ethylene butadiene styrene (SEBS). More polymer chips are formed into process oil.
상기 개질 아스팔트는 아스팔트 100중량부에 폴리머 칩 3~20중량부, 프로세스 오일 0.1~10중량부가 혼합되어 형성되는 것으로 아스팔트를 약 130~170℃로 가열하고 폴리머 칩를 첨가하여 폴리머 칩이 완전히 용해되도록 교반한 후, 프로세스 오일을 첨가하여 교반하여 제조할 수 있을 것이다.The modified asphalt is formed by mixing 3 to 20 parts by weight of polymer chips and 0.1 to 10 parts by weight of process oil with 100 parts by weight of asphalt. The asphalt is heated to about 130 to 170 ℃, polymer chips are added, and the polymer chips are stirred to completely dissolve. After that, it can be manufactured by adding process oil and stirring.
상기 프로세스 오일을 첨가한 후에 저장안정제를 더 첨가할 수 있으며, 콜로이드 밀을 통해 아스팔트에 첨가된 폴리머 칩과 프로세스 오일이 균일하게 혼합되도록 형성하는 것이 바람직할 것이다.After adding the process oil, a storage stabilizer may be further added, and it would be desirable to uniformly mix the polymer chips added to the asphalt and the process oil through a colloid mill.
상기 아스팔트는 아스팔트 PG등급 58-22, 64-22, 70-22, 76-22, 76-34, 82-28, 82-34 중 어느 하나 또는 2 이상의 혼합 아스팔트를 사용할 수 있을 것이다.The asphalt may be any one of asphalt PG grades 58-22, 64-22, 70-22, 76-22, 76-34, 82-28, 82-34, or a mixture of two or more asphalts.
상기 프로세스 오일은 아로마틱계 오일, 나프텐계 오일, 식물계 오일, 동물계 오일 중 어느 하나 또는 2 이상의 혼합 오일을 사용할 수 있을 것이다.The process oil may be any one of aromatic oil, naphthenic oil, vegetable oil, and animal oil, or a mixture of two or more oils.
상기 개질 탄성칩에는 축열재가 포함되어 아스팔트콘크리트에 결빙 방지 기능을 부여하게 된다.The modified elastic chip includes a heat storage material to provide an anti-icing function to asphalt concrete.
상기 개질 탄성칩은 상기 개질 아스팔트와 동일한 폴리머 칩 100중량부에 점착부여수지 5~30중량부, 프로세스 오일 1~10중량부, 축열재 1~30중량부가 혼합되어 형성되는 것으로 폴리머 칩, 점착부여수지, 프로세스 오일를 120~190℃에서 용융 및 혼합시켜 제조할 수 있는 것으로 압출기(extruder)를 통해 제조하는 것이 바람직할 것이다.The modified elastic chip is formed by mixing 100 parts by weight of the same polymer chip as the modified asphalt with 5 to 30 parts by weight of tackifying resin, 1 to 10 parts by weight of process oil, and 1 to 30 parts by weight of heat storage material. It can be manufactured by melting and mixing resin and process oil at 120~190℃, so it would be preferable to manufacture it through an extruder.
싱기 개질 탄성칩은 아스팔트콘크리트 내부에 함유되어 도로의 충격을 완화하고 소음을 흡수하는 작용을 하는 것으로 입도가 너무 작으면 충격완화 및 흡음기능이 저하될 수 있으며, 입도가 너무 크면 아스팔트콘크리트의 내구성이 저하될 수 있으므로 입도 1~10㎜의 칩으로 제조하는 것이 바람직하며, 더욱 바람직하게는 입도 2~7㎜로 제조되는 것이다.Singi-modified elastic chips are contained inside asphalt concrete and act to relieve road shock and absorb noise. If the particle size is too small, shock relief and sound absorption functions may be reduced, and if the particle size is too large, the durability of asphalt concrete may be reduced. Since it may deteriorate, it is preferable to manufacture chips with a particle size of 1 to 10 mm, and more preferably, chips with a particle size of 2 to 7 mm.
상기 점착부여수지는 로진 또는 석유수지를 사용할 수 있을 것이다.The tackifying resin may be rosin or petroleum resin.
상기 프로세스 오일은 아로마틱계 오일, 나프텐계 오일, 식물계 오일, 동물계 오일 중 어느 하나 또는 2 이상의 혼합 오일을 사용할 수 있으나, 상기 개질 아스팔트에 사용된 것과 동일한 프로세스 오일을 사용하는 것이 바람직할 것이다.The process oil may be any one of aromatic oil, naphthenic oil, vegetable oil, and animal oil, or a mixture of two or more oils, but it is preferable to use the same process oil as that used in the modified asphalt.
상기 개질 탄성칩에 함유되는 축열재는 열을 흡수한 후, 일정이하의 온도에서는 열을 방출하는 특성이 가지는 물질로 본 발명에서는 아스팔트콘크리트의 물성을 저해하지 않는 무기물을 사용하는 것이 바람직한 것으로 블랙카본, 탄소나노튜브, 흑연중에서 선택되는 하나 또는 2이상의 혼합물을 사용하는 것이 바람직할 것이다.The heat storage material contained in the modified elastic chip is a material that absorbs heat and then releases heat at a temperature below a certain level. In the present invention, it is preferable to use an inorganic material that does not impair the physical properties of asphalt concrete, such as black carbon, It would be preferable to use one or a mixture of two or more selected from carbon nanotubes and graphite.
상기 축열재는 개질 탄성칩에 함유되어 아스팔트콘크리트 제조시 바닥에 깔리지 않고 균일하게 분산하게 된다.The heat storage material is contained in the modified elastic chip and is uniformly dispersed without spreading on the floor when manufacturing asphalt concrete.
상기와 같이 제조되는 개질 아스팔트 및 개질 탄성칩은 골재와 혼합되어 본 발명의 아스팔트콘크리트로 형성된다.The modified asphalt and modified elastic chips prepared as described above are mixed with aggregate to form the asphalt concrete of the present invention.
본 발명의 아스팔트콘크리트는 골재를 약 150~200℃로 가열한 후, 개질 아스팔트를 첨가하여 고르게 혼합하고, 약 130~180℃에서 개질 탄성칩을 첨가하여 혼합하는 것이 바람직할 것이다.For the asphalt concrete of the present invention, it is preferable to heat the aggregate to about 150-200°C, add modified asphalt, mix evenly, and mix by adding modified elastic chips at about 130-180°C.
상기 개질 탄성칩을 첨가할 때의 온도가 130℃ 미만이면 점도가 높아 개질 탄성칩의 균일한 혼합이 저하될 수 있으며, 180℃를 초과하면 개질 탄성칩이 용융되어 저소음 기능이 저하될 수 있다.If the temperature when adding the modified elastic chip is less than 130°C, uniform mixing of the modified elastic chip may be reduced due to high viscosity, and if it exceeds 180°C, the modified elastic chip may melt and the low noise function may be reduced.
즉, 상기 개질 탄성칩은 아스팔트콘크리트 내부에서 칩형태를 유지하면서 아스팔트콘크리트의 탄성을 향상시키고 저소음 기능을 부여하게 된다.In other words, the modified elastic chip maintains the chip shape inside the asphalt concrete, improves the elasticity of the asphalt concrete, and provides a low noise function.
본 발명의 아스팔트콘크리트는 상기 골재 100중량부에 개질 아스팔트 3~10중량부, 개질 탄성칩 1~8중량부가 혼합되는 것이 바람직할 것이다.In the asphalt concrete of the present invention, it is preferable to mix 3 to 10 parts by weight of modified asphalt and 1 to 8 parts by weight of modified elastic chips with 100 parts by weight of the aggregate.
상기와 같이 형성되는 본 발명의 아스팔트콘크리트는 내부에 함유된 개질 탄성칩으로 인해 아스팔트콘크리트의 충격 흡수 및 소음 흡수로 저소음 기능을 갖게 된다.The asphalt concrete of the present invention formed as described above has a low noise function by absorbing the shock and noise of asphalt concrete due to the modified elastic chips contained therein.
또한, 개질 아스팔트의 개질제로 사용되는 폴리머 칩과 개질 탄성칩의 주요 성분인 폴리머 칩이 동일 성분으로 쉽게 융화되어 부착성이 향상되어 개질 탄성칩이 아스팔트콘크리트에서 이탈되는 것을 방지하여 아스팔트콘크리트의 내구성을 향상시킨다.In addition, the polymer chip, which is used as a modifier for modified asphalt, and the polymer chip, which is the main component of modified elastic chip, are easily fused with the same component, improving adhesion, preventing the modified elastic chip from being separated from asphalt concrete, thereby increasing the durability of asphalt concrete. improve
상기 개질 아스팔트와 개질 탄성칩의 부착성을 향상시키기 위해 개질 아스팔트와 개질 탄성칩에 함유되는 프로세스 오일을 동일한 오일으로 사용하는 것이 바람직할 것이다.In order to improve the adhesion between the modified asphalt and the modified elastic chip, it is preferable to use the same process oil contained in the modified asphalt and the modified elastic chip.
또한, 본 발명의 아스팔트콘크리트의 내구성을 향상시키기 위해 접착증진제를 더 함유시킬 수 있다.Additionally, an adhesion promoter may be further added to improve the durability of the asphalt concrete of the present invention.
상기 접착증진제는 친수기(親水基)와 친유기를 동시에 가지는 화합물로 다양한 반응기를 통해 골재간의 결합, 아스팔트간의 결합, 개질 탄성칩간의 결합 및 골재와 개질 아스팔트의 결합, 골재와 개질 탄성칩의 결합을 유도하여 아스팔트콘크리트의 내구성을 향상시키게 된다.The adhesion promoter is a compound that has both hydrophilic and lipophilic groups and induces bonding between aggregates, bonding asphalt, bonding between modified elastic chips, bonding between aggregates and modified asphalt, and bonding between aggregates and modified elastic chips through various reactors. This improves the durability of asphalt concrete.
상기 접착증진제는 지방산염, 알코올 황산에스테르염, 알킬 또는 알킬아릴술폰산염, 황산화유, 아민염, 4차 암모늄, 알킬피리늄염 중 하나 또는 2 이상의 혼합물을 사용할 수 있을 것이다.The adhesion promoter may be one or a mixture of two or more of fatty acid salts, alcohol sulfuric acid ester salts, alkyl or alkylaryl sulfonate salts, sulfated oil, amine salts, quaternary ammonium salts, and alkyl pyrinium salts.
상기 접착증진제는 아스팔트콘크리트 제조시에 첨가되는 것이 바람직하며, 첨가되는 아스팔트 함량의 0.001~1.0중량%함유되는 것이 바람직할 것이다.The adhesion promoter is preferably added when manufacturing asphalt concrete, and is preferably contained in 0.001 to 1.0% by weight of the added asphalt content.
상기 접착증진제는 첨가시에 개질 아스팔트의 점도를 증가시킬 수 있으므로 개질 탄성칩과 동시에 첨가하거나, 또는 개질 탄성칩 첨가 후에 첨가하는 것이 바람직할 것이다.Since the adhesion promoter can increase the viscosity of the modified asphalt when added, it is preferable to add it at the same time as the modified elastic chip or after adding the modified elastic chip.
상기와 같이 본 발명의 아스팔트콘크리트는 골재와 혼합되기 전에 개질 아스팔트로 제조 후, 현장에서 골재, 개질 아스팔트, 개질 탄성칩을 혼합하여 시공할 수 있는 프리믹싱형 저소음 아스팔트콘크리트로 제조방식으로 시공성이 우수하다.As described above, the asphalt concrete of the present invention is a premixed low-noise asphalt concrete that can be manufactured with modified asphalt before mixing with aggregate and then constructed on site by mixing aggregate, modified asphalt, and modified elastic chips, and has excellent constructability. do.
또한, 본 발명의 아스팔트콘크리트는 제조시에 색상을 가지는 무기질 안료를 같이 첨가하여 시인성을 가지는 칼라 아스팔트콘크리트로 형성할 수 있을 것이다.In addition, the asphalt concrete of the present invention can be formed into colored asphalt concrete with visibility by adding colored inorganic pigments during manufacturing.
상기 무기질 안료는 아스팔트콘크리트 중량의 0.5~10중량% 첨가될 수 있을 것이다.The inorganic pigment may be added in an amount of 0.5 to 10% by weight of the weight of asphalt concrete.
상기의 본 발명에 따른 아스팔트콘크리트에 사용되는 골재의 입도를 조절하여 내유동성, 저소음성의 향상 또는 배수성 및 투수성 아스팔트콘크리트를 제조할 수 있다.By adjusting the particle size of the aggregate used in the asphalt concrete according to the present invention, it is possible to improve fluidity resistance and low noise, or to manufacture asphalt concrete with drainage and water permeability.
상기 내유동성을 가지는 아스팔트콘크리트로 제조할 경우에는 상기 골재를 굵은골재 45~85 중량%, 잔골재 10~45 중량%, 채움재 5~10 중량%로 구성하여 제조할 수 있다.When manufactured with asphalt concrete having the above fluid resistance, the aggregate may be composed of 45 to 85% by weight of coarse aggregate, 10 to 45% by weight of fine aggregate, and 5 to 10% by weight of filler.
또한, 골재의 함량을 조절하여 상기 내유동성 및 저소음성을 향상시킬 수 있는 것으로 골재를 굵은골재 60~73 중량%, 잔골재 25~35 중량%, 채움재 2~5 중량%로 사용할 수 있으며, 더욱 자세하게는 5~13mm 입도의 굵은 골재, 0.6~2.5mm 입도의 잔골재를 사용하여 골재와 골재간의 맞물림 효과를 높게하여 표면공극율 유지하여 저소음 기능 향상시키면서, 내부는 내유동성 포장과 동등한 수밀성 및 내구성을 가지는 아스팔트콘크리트를 제조할 수 있다.In addition, the fluidity resistance and low noise properties can be improved by adjusting the content of the aggregate, and the aggregate can be used in the form of 60 to 73% by weight of coarse aggregate, 25 to 35% by weight of fine aggregate, and 2 to 5% by weight of filler. It uses coarse aggregate with a particle size of 5 to 13 mm and fine aggregate with a particle size of 0.6 to 2.5 mm to increase the interlocking effect between aggregates and maintain surface porosity to improve low noise function, while the interior is asphalt with water tightness and durability equivalent to that of fluid-resistant pavement. Concrete can be manufactured.
또한, 배수성 및 투수성을 가지는 아스팔트콘크리트로 제조할 경우에는 골재를 굵은골재 70~90 중량%, 잔골재 7~27 중량%, 채움재 3~8 중량%로 구성하여 제조할 수 있다.In addition, when manufacturing asphalt concrete with drainage and water permeability, the aggregate can be made of 70 to 90% by weight of coarse aggregate, 7 to 27% by weight of fine aggregate, and 3 to 8% by weight of filler.
또한, 본 발명의 아스팔트콘크리트는 하부에는 10~20㎜, 상부에 5~8㎜의 골재를 사용하여 복층포장으로 형성할 수 있을 것이다.In addition, the asphalt concrete of the present invention can be formed as a double-layer pavement using aggregates of 10 to 20 mm in the lower part and 5 to 8 mm in the upper part.
또한, 상기의 아스팔트콘크리트의 물성을 더욱 향상시키기 위해 폴리프로필렌섬유, 폴리에스테르섬유, 아크릴섬유, 셀룰로우스섬유, 카본섬유, 유리섬유, 아라미드섬유 등의 합성섬유를 첨가할 수 있다. 상기 합성섬유의 첨가량은 아스팔트콘크리트 100 중량부에 상기 합성섬유 중 하나 또는 2이상을 혼합한 강도보강용 섬유 0.01~0.2 중량부를 첨가하는 것이 바람직하다. Additionally, in order to further improve the physical properties of the above-mentioned asphalt concrete, synthetic fibers such as polypropylene fiber, polyester fiber, acrylic fiber, cellulose fiber, carbon fiber, glass fiber, and aramid fiber can be added. The amount of the synthetic fiber added is preferably 0.01 to 0.2 parts by weight of strength reinforcing fiber mixed with one or two or more of the synthetic fibers per 100 parts by weight of asphalt concrete.
또한, 상기의 아스팔트콘크리트의 물성을 더욱 향상시키기 위한 또다른 방법으로 C45~C100(탄소수가 45~100개)인 FT왁스(Fischer-Tropsch공법으로 제조된 왁스)를 첨가할 수 있다.In addition, as another method to further improve the physical properties of the above-mentioned asphalt concrete, FT wax (wax manufactured by the Fischer-Tropsch method) with C 45 to C 100 (carbon number 45 to 100) can be added.
또한, 최근에는 주차장이나 통행로의 표시등으로 다양한 색상의 아스팔트콘크리트가 요구되고 있어 본 발명의 아스팔트콘크리트로 색상을 가지는 아스팔트콘크리트 포장체를 제조할 수 있다.In addition, as asphalt concrete of various colors is recently required for parking lot or passage markings, colored asphalt concrete pavements can be manufactured using the asphalt concrete of the present invention.
상기의 아스팔트콘크리트를 시공하고, 그 시공면에 유면접착제를 도포한 후, 입도 1~15㎜의 칼라스톤과 접착제가 혼합된 칼라스톤이 적층하여 제조할 수 있다.After constructing the above-described asphalt concrete and applying an oil-level adhesive to the construction surface, it can be manufactured by laminating color stones mixed with color stones with a particle size of 1 to 15 mm and an adhesive.
상기 유면접착제는 기름이 부착되어 있는 표면에 접착제를 도포할 경우 기름이 접착제 중에 흡수, 확산되어 높은 접착 강도를 나타내는 접착제로서 에폭시 수지계, 제2세대 아크릴(SGA)계, 시아노아크릴레이트계, 혐기성 아크릴레이트계, 폴리우레탄계, 비닐에스테르(불포화 폴리에스테르)계 등의 유면 접착제를 사용할 수 있다.The oil-level adhesive is an adhesive that exhibits high adhesive strength because the oil is absorbed and diffused into the adhesive when applied to a surface to which oil is attached. It is an epoxy resin-based, second-generation acrylic (SGA)-based, cyanoacrylate-based, and anaerobic adhesive. Oil-based adhesives such as acrylate-based, polyurethane-based, and vinyl ester (unsaturated polyester)-based adhesives can be used.
상기 칼라스톤은 입도크기 1~15㎜의 칼라스톤과 접착제를 중량비 75:25~95로 혼합되어 제조되는 것으로 상기 칼라스톤은 콩자갈, 종석, 규사나 천연 광산에서 생산되는 화강암, 대리암 계통의 백색, 흑색, 적색, 녹색, 황색, 옥색 등 독특한 색상의 자연석으로 건축용 판석, 석재조형물 등을 만들고 남은 폐석을 파쇄, 선별한 골재를 사용할 수 있다.The color stone is manufactured by mixing color stone with a particle size of 1 to 15 mm and adhesive at a weight ratio of 75:25 to 95. The color stone is a white color of soybean gravel, keystone, silica sand, or granite or marble produced in natural mines. Natural stones of unique colors such as black, red, green, yellow, and jade can be used to make architectural flagstones and stone sculptures, and the remaining waste rock can be crushed and selected as aggregate.
또한, 제작비의 절약 및 자연석으로 구현되지 못하는 색상을 위해 칼라 도장된 인조석을 사용할 수도 있다.Additionally, colored artificial stone can be used to save production costs and to provide colors that cannot be achieved with natural stone.
상기 칼라스톤은 도로의 상측으로 1~3㎝ 두께로 포장되는 것이 바람직할 것이다.It would be desirable for the color stone to be paved to a thickness of 1 to 3 cm on the upper side of the road.
이하 본 발명의 아스팔트콘크리트의 제조에 대한 실시예를 나타내지만, 이에 한정되는 것은 아니다.Below, examples of manufacturing asphalt concrete of the present invention are shown, but are not limited thereto.
실시예 1Example 1
개질 아스팔트 제조: 공용성등급 64-22의 아스팔트 100중량부에 폴리머 칩으로 스티렌이소프렌스티렌(SIS)을 10중량부, 프로세스 오일로 나프텐계 오일을 7중량부를 첨가하고 약 140~150℃에서 혼합하여 개질 아스팔트를 제조하였다.Manufacture of modified asphalt: Modify by adding 10 parts by weight of styrene isoprene styrene (SIS) as polymer chips and 7 parts by weight of naphthenic oil as process oil to 100 parts by weight of asphalt of compatibility grade 64-22 and mixing at about 140~150℃. Asphalt was manufactured.
개질 탄성칩 제조: 폴리머 칩으로 스티렌이소프렌스티렌(SIS) 100중량부에 점착부여수지인 석유수지를 13중량부, 프로세스 오일로 나프텐계 오일을 5중량부, 축열재로 블랙카본을 10중량부를 첨가하고 약 160~170℃에서 혼합하여 입도 약 2~4㎜ 개질 탄성칩을 제조하였다.Manufacture of modified elastic chips: Add 13 parts by weight of petroleum resin as an adhesive resin to 100 parts by weight of styrene isoprene styrene (SIS) as a polymer chip, 5 parts by weight of naphthenic oil as a process oil, and 10 parts by weight of black carbon as a heat storage material. and mixed at about 160 to 170°C to produce modified elastic chips with a particle size of about 2 to 4 mm.
아스팔트콘크리트 제조: 골재 100중량부에 상기에서 제조된 개질 아스팔트 7중량부, 개질 탄성칩 2중량부를 혼합하여 아스팔트콘크리트를 제조하였다.Asphalt concrete production: Asphalt concrete was manufactured by mixing 100 parts by weight of aggregate with 7 parts by weight of the modified asphalt prepared above and 2 parts by weight of the modified elastic chip.
상기 골재는 골재입도율을 KS F 2357규격의 굵은골재 60 중량%, KS F 2357규격의 잔골재 37 중량%, KS F 3501규격의 채움재 3.0 중량%로 조성한 골재를 사용하였다.The aggregate was used with an aggregate particle size ratio of 60% by weight of coarse aggregate of the KS F 2357 standard, 37% by weight of fine aggregate of the KS F 2357 standard, and 3.0% by weight of filler of the KS F 3501 standard.
상기 골재를 약 170℃로 가열한 후, 개질 아스팔트를 첨가하여 고르게 혼합하고, 약 150℃에서 개질 탄성칩을 첨가하고 혼합하여 본 발명에 따른 아스팔트콘크리트를 제조하였다.After heating the aggregate to about 170°C, modified asphalt was added and mixed evenly, and modified elastic chips were added and mixed at about 150°C to prepare asphalt concrete according to the present invention.
실시예 2Example 2
상기 실시예 1과 동일하게 제조하였으나, 상기 개질 탄성칩을 첨가할 때, 접착증진제로 1-decanamine을 첨가된 아스팔트 중량의 0.05중량%함유시켜 본 발명에 따른 아스팔트콘크리트를 제조하였다.Asphalt concrete according to the present invention was manufactured in the same manner as in Example 1, but when adding the modified elastic chip, 1-decanamine as an adhesion promoter was added in an amount of 0.05% by weight of the weight of the added asphalt.
비교예 1Comparative Example 1
상기 실시예 1과 동일하게 제조하였으나, 개질 탄성칩에 축열재를 함유시키지 않았으며, 상기 개질 탄성칩에는 폴리머 칩으로 부틸고무(BR)를 첨가하여 아스팔트콘크리트를 제조하였다.It was manufactured in the same manner as in Example 1, but the modified elastic chip did not contain a heat storage material, and butyl rubber (BR) was added as a polymer chip to the modified elastic chip to produce asphalt concrete.
비교예 2Comparative Example 2
상기 실시예 1과 동일하게 제조하였으나, 개질 탄성칩을 첨가하지 않고 아스팔트콘크리트를 제조하였다.Asphalt concrete was manufactured in the same manner as in Example 1, but without adding modified elastic chips.
◈ 비교 실험◈ Comparison experiment
상기와 같이 제조된 실시예 1,2 및 비교예 1,2의 아스팔트콘크리트를 공시체로 제작한 후, 마샬안정도, 간접인장강도, 회복탄성계수, 동적안정도. 근거리 소음을 측정하였다.After the asphalt concrete of Examples 1 and 2 and Comparative Examples 1 and 2 prepared as above were manufactured as specimens, Marshall stability, indirect tensile strength, recovery modulus, and dynamic stability were measured. Near-field noise was measured.
상기 아스팔트콘크리트 공시체를 제조 7일 후의 마샬안정도, 간접인장강도, 회복탄성계수, 동적안정도, 근거리 소음을 측정하여 표 1에 나타내었다.The Marshall stability, indirect tensile strength, recovery modulus, dynamic stability, and short-range noise of the asphalt concrete specimen were measured 7 days after manufacturing and are shown in Table 1.
◎ 실험 방법◎ Experiment method
1) 마샬안정도시험은 아스팔트 혼합물의 흐름에 대한 소성 저항성을 측정하기 위함이며 마샬시험기를 사용한 역청혼합물의 소성흐름에 대한 저항력 시험방법(KS F 2337)에 따라 측정하였다.1) The Marshall stability test is to measure the plastic resistance to the flow of the asphalt mixture and was measured according to the test method for resistance to the plastic flow of the bitumen mixture using a Marshall tester (KS F 2337).
2) 간접인장강도시험은 아스팔트콘크리트의 할렬인장에 대한 간접강도를 파악할 수 있는 측정방법으로 역청혼합물의 간접 인장강도시험(KS F 2382)에 따라 측정하였다.2) The indirect tensile strength test is a measurement method that can determine the indirect strength of splitting tension of asphalt concrete and was measured according to the indirect tensile strength test of bitumen mixture (KS F 2382).
3) 회복탄성계수시험은 차량의 반복적인 하중에 대한 아스팔트 혼합물의 온도별 회복변형 거동특성을 모사하기 위한 측정방법으로 회복탄성계수시험(KS F 2376)에 따라 5℃, 25℃, 40℃ 온도에서 각각 저온, 상온, 고온 특성을 측정하였다.3) The recovery modulus test is a measurement method to simulate the recovery deformation behavior characteristics of asphalt mixtures at different temperatures in response to repetitive vehicle loads. It is performed at temperatures of 5℃, 25℃, and 40℃ according to the recovery modulus test (KS F 2376). Low-temperature, room-temperature, and high-temperature characteristics were measured, respectively.
4) 휠트랙킹시험에 따른 동적안정도는 아스팔트 혼합물의 소성변형 동적저항성을 평가할 수 있는 시험으로서 이 때 측정되는 동적안정도(회/mm)는 아스팔트 콘크리트 혼합물의 휠트랙킹시험(KS F 2374)방법에 따라 측정하였다.4) Dynamic stability according to the wheel tracking test is a test that can evaluate the dynamic resistance to plastic deformation of asphalt mixture. The dynamic stability (times/mm) measured at this time is according to the wheel tracking test of asphalt concrete mixture (KS F 2374). Measured.
5) 근거리 소음(CPX)는 차량 타이어의 중앙을 기준으로 20cm 떨어진 거리에서 지면과의 높이를 10cm로 하고 앞뒤에 마이크로폰을 설치하고, 20 ℃ 대기온도에서 90 km/h의 속도로 차량이 주행하고 소음 측정으로 ISO Standard 11819-2의 표준에 따라 측정하였다.5) Near-field noise (CPX) is measured at a distance of 20 cm from the center of the vehicle tires, with a height of 10 cm from the ground, microphones installed at the front and rear, and the vehicle driving at a speed of 90 km/h in an air temperature of 20°C. Noise was measured according to ISO Standard 11819-2.
상기 표 1에 나타난 바와 같이 본 발명에 따른 아스팔트콘크리트인 실시예 1,2는 비교예 1,2와 비교하여 마샬안정도, 간접인장강도, 회복탄성계수, 동적안정도, 근거리 소음가 모두 우수한 것으로 내구성이 우수하면서 저소음 기능이 우수한 것을 알 수 있다.즉, 탄성칩이 함유되지 않은 비교예 2와 비교하여 실시예 1,2는 10dB이상의 소음이 저감된 것으로 저소음 기능이 매우 우수한 것을 알 수 있다.As shown in Table 1, Examples 1 and 2, which are asphalt concrete according to the present invention, are superior in Marshall stability, indirect tensile strength, recovery modulus, dynamic stability, and short-range noise compared to Comparative Examples 1 and 2, and are excellent in durability. It can be seen that the low noise function is excellent. In other words, compared to Comparative Example 2, which does not contain an elastic chip, the noise of Examples 1 and 2 was reduced by more than 10 dB, showing that the low noise function is very excellent.
또한, 탄성칩이 사용된 비교예 1와 비교하여 실시예 1,2가 마샬안정도, 간접인장강도, 회복탄성계수, 동적안정도이 우수한 것으로 개질 아스팔트, 개질 탄성칩에 동일한 폴리머 칩을 사용할 경우 내구성이 향상되는 것을 알 수 있으며, 저소음 기능도 향상되는 것을 알 수 있다.In addition, compared to Comparative Example 1 in which elastic chips were used, Examples 1 and 2 were superior in Marshall stability, indirect tensile strength, recovery modulus, and dynamic stability, and durability improved when the same polymer chip was used for modified asphalt and modified elastic chips. It can be seen that the low noise function is also improved.
또한, 실시예 1과 실시예 2를 비교하면 실시예 2가 실시예 1 보다 마샬안정도, 간접인장강도, 회복탄성계수, 동적안정도가 우수한 것으로 접착증진제를 사용할 경우 내구성이 향상되는 것을 알 수 있다.In addition, comparing Example 1 and Example 2, it can be seen that Example 2 is superior to Example 1 in Marshall stability, indirect tensile strength, recovery modulus, and dynamic stability, and that durability is improved when an adhesion promoter is used.
상기 아스팔트콘크리트 공시체를 제조 7일 후의 저온에서의 미끄럼 저항 시험 및 국제마찰지수를 측정하여 표 2에 나타내었다.The slip resistance test and international friction index of the asphalt concrete specimen at low temperature 7 days after manufacturing were measured and are shown in Table 2.
◎ 실험 방법◎ Experiment method
1) 미끄럼 저항 시험은 저온에서 결빙 형성으로 인한 미끄럼 저항을 측정하기 위함으로 EN 13036-4에 제시된 시험방법을 통해 측정하였다.1) The sliding resistance test was conducted using the test method presented in EN 13036-4 to measure the sliding resistance caused by ice formation at low temperatures.
2) 국제마찰지수(IFI)는 저온에서 결빙 형성으로 인한 마찰력 변화를 측정하기 위함으로 ASTM E1960-07에 제시된 시험방법을 통해 측정하였다.2) The International Friction Index (IFI) was measured using the test method presented in ASTM E1960-07 to measure the change in friction due to ice formation at low temperatures.
표 2에서와 같이 본 발명에 따른 저소음 아스팔트콘크리트인 실시예 1,2는 비교예 1,2와 비교하여 미끄럼 저항성을 가지고, 마찰력이 큰 것으로 본 발명에 따른 결빙 방지 및 내구성이 향상되는 저소음 아스팔트콘크리트가 저온에서 결빙 형성을 방지하는 것을 알 수 있다.As shown in Table 2, Examples 1 and 2, which are low-noise asphalt concrete according to the present invention, have slip resistance and greater friction compared to Comparative Examples 1 and 2, so they are low-noise asphalt concrete with improved anti-icing and durability according to the present invention. It can be seen that prevents ice formation at low temperatures.
Claims (11)
상기 개질 아스팔트는 아스팔트 100중량부에 스티렌뷰타디엔스티렌(SBS), 스티렌뷰타디엔고무(SBR), SBR라텍스, 스티렌이소프렌스티렌(SIS), 스티렌에틸렌뷰타디엔스티렌(SEBS) 중 어느 하나 또는 2이상의 폴리머 칩 3~20중량부, 프로세스 오일 0.1~10중량부가 혼합되어 형성되고,
상기 개질 탄성칩은 상기 개질 아스팔트와 동일한 폴리머 칩, 점착부여수지, 프로세스 오일로 형성되며,
상기 개질 탄성칩에 축열재가 더 포함되고,
상기 골재 100중량부에 개질 아스팔트 3~10중량부, 개질 탄성칩 1~8중량부가 혼합되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.In asphalt concrete with improved durability formed by mixing aggregate, modified asphalt, and modified elastic chips,
The modified asphalt is one or two or more polymers among styrene butadiene styrene (SBS), styrene butadiene rubber (SBR), SBR latex, styrene isoprene styrene (SIS), and styrene ethylene butadiene styrene (SEBS) per 100 parts by weight of asphalt. It is formed by mixing 3 to 20 parts by weight of chips and 0.1 to 10 parts by weight of process oil,
The modified elastic chip is formed of the same polymer chip, tackifying resin, and process oil as the modified asphalt,
The modified elastic chip further includes a heat storage material,
Asphalt concrete with improved durability, characterized in that 3 to 10 parts by weight of modified asphalt and 1 to 8 parts by weight of modified elastic chips are mixed with 100 parts by weight of the aggregate.
상기 개질 탄성칩은 폴리머 칩 100중량부에 점착부여수지 5~30중량부, 프로세스 오일 1~10중량부, 축열재 1~30중량부가 혼합되어 형성되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
The modified elastic chip is an asphalt concrete with improved durability, which is formed by mixing 5 to 30 parts by weight of tackifying resin, 1 to 10 parts by weight of process oil, and 1 to 30 parts by weight of heat storage material with 100 parts by weight of polymer chips.
상기 아스팔트는 아스팔트 PG등급 58-22, 64-22, 70-22, 76-22, 76-34, 82-28, 82-34 중 어느 하나 또는 2 이상 혼합물인 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
The asphalt is an asphalt with improved durability, characterized in that it is any one of asphalt PG grades 58-22, 64-22, 70-22, 76-22, 76-34, 82-28, 82-34, or a mixture of two or more. concrete.
상기 축열재는 블랙카본, 탄소나노튜브, 흑연 중에서 선택되는 하나 또는 2이상의 혼합물인 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
Asphalt concrete with improved durability, wherein the heat storage material is one or a mixture of two or more selected from black carbon, carbon nanotubes, and graphite.
상기 아스팔트콘크리트에 무기질 안료를 포함시켜 시인성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
Asphalt concrete with improved durability, characterized in that it has visibility by including an inorganic pigment in the asphalt concrete.
상기 골재는 재생골재와 일반골재를 중량비 10:90~80:20로 혼합한 혼합골재를 사용하여 형성되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
The aggregate is an asphalt concrete with improved durability, which is formed using mixed aggregate mixed with recycled aggregate and general aggregate at a weight ratio of 10:90 to 80:20.
상기 골재는 굵은골재 45~85 중량%, 잔골재 10~45 중량%, 채움재 5~10 중량%로 사용하여 내유동성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
Asphalt concrete with improved durability, characterized in that the aggregate has fluidity resistance by using 45 to 85% by weight of coarse aggregate, 10 to 45% by weight of fine aggregate, and 5 to 10% by weight of filler.
상기 골재는 굵은골재 60~73 중량%, 잔골재 25~35 중량%, 채움재 2~5 중량%로 사용하여 저소음 및 내유동성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
The aggregate is used at 60 to 73% by weight of coarse aggregate, 25 to 35% by weight of fine aggregate, and 2 to 5% by weight of filler, and is an asphalt concrete with improved durability, characterized by low noise and fluid resistance.
상기 골재는 굵은골재 70~90 중량%, 잔골재 7~27 중량%, 채움재 3~8 중량%로 사용하여 배수성 및 투수성을 가지는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
Asphalt concrete with improved durability, characterized in that it has drainage and water permeability by using 70-90% by weight of coarse aggregate, 7-27% by weight of fine aggregate, and 3-8% by weight of filler.
상기 아스팔트콘크리트는 하부에 10~20㎜, 상부에 5~8㎜ 골재를 사용하여 복층포장으로 형성되는 것을 특징으로 하는 내구성이 향상되는 아스팔트콘크리트.According to paragraph 1,
The asphalt concrete is an asphalt concrete with improved durability, characterized in that it is formed as a double-layer pavement using aggregates of 10 to 20 mm in the lower part and 5 to 8 mm in the upper part.
After constructing the asphalt concrete according to any one of claims 1 to 10 and applying an oil-level adhesive to the construction surface, colored pitched stones mixed with colored stones and adhesives with a particle size of 1 to 15 mm are laminated to have a color. Asphalt concrete pavement, characterized in that.
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