KR100935465B1 - Modified-asphalt and modified-asphalt concrete - Google Patents
Modified-asphalt and modified-asphalt concrete Download PDFInfo
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- C04B16/04—Macromolecular compounds
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- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
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- C08L2555/34—Recycled or waste materials, e.g. reclaimed bitumen, asphalt, roads or pathways, recycled roof coverings or shingles, recycled aggregate, recycled tires, crumb rubber, glass or cullet, fly or fuel ash, or slag
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Abstract
Description
본 발명은 개질 아스팔트 및 개질 아스팔트콘크리트에 관한 것으로서, 더욱 상세하게는 탈경화 고무분말과 폴리인산을 이용하여 아스팔트콘크리트의 물성을 향상시키는 개질 아스팔트와 상기 개질 아스팔트를 이용한 개질 아스팔트콘크리트에 관한 것이다. The present invention relates to modified asphalt and modified asphalt concrete, and more particularly, to modified asphalt for improving physical properties of asphalt concrete using decured rubber powder and polyphosphoric acid and modified asphalt concrete using the modified asphalt.
일반적으로 아스팔트는 유기화합물과 미량의 무기화합물 등이 포함된 수천종 이상의 고분자 탄화수소(C-H)가 매우 복잡하게 구성된 흑색 또는 흑갈색 고체 또는 반고체의 열가소성 물질로서 가열하게 되면 서서히 액상으로 변화되는 특성을 갖는다. In general, asphalt is a black or dark brown solid or semi-solid thermoplastic composed of thousands of high molecular hydrocarbons (C-H) containing organic compounds and trace inorganic compounds, and has a characteristic of gradually changing to a liquid phase when heated.
상기 아스팔트는 천연 아스팔트, 석유계 아스팔트 및 포장용 타르와 같은 종류로 나뉘어지며 스트레이트 아스팔트, 유화 아스팔트가 널리 알려져 있다. 또한 상기 아스팔트는 점착성이 뛰어나고 광물질 재료와의 부착성이 우수하기 때문에 결합재료나 접착재료로 이용되며, 물에 용해되지 않고 불투수성이므로 방수재료로도 이용되며, 사용목적에 따라 점도를 변화시킬 수 있어 그 활용범위가 다양하고 도로 포장용, 방수용, 일반 공업용, 농업용 등의 다양한 용도로 사용되고 있다. The asphalt is divided into such types as natural asphalt, petroleum-based asphalt and paving tar, and straight asphalt and emulsified asphalt are widely known. In addition, the asphalt is used as a bonding material or an adhesive material because it is excellent in adhesion and adhesion to the mineral material, and is also used as a waterproofing material because it is not dissolved in water and is impermeable to water, and the viscosity can be changed according to the purpose of use. The scope of application is diverse and it is used for various purposes such as road pavement, waterproofing, general industry, agriculture.
도로 포장용으로 사용되는 아스팔트는 석유계 아스팔트로 접착성, 신장성(伸張性), 흡투수(吸透水)가 우수한 스트레이트 아스팔트가 일반적으로 사용된다.Asphalt used for road pavement is petroleum-based asphalt, and straight asphalt having excellent adhesiveness, extensibility, and water absorption is generally used.
그러나, 스트레이트 아스팔트는 연화점이 낮고, 온도감온성이 크고, 내후성이 약하고, 응집력이 약한 단점을 가지고 있으므로 이를 보완하고, 사용하는 곳의 특성에 맞도록 다양한 개질재를 첨가하여 사용되고 있다.However, straight asphalt has a low softening point, high temperature sensitivity, poor weather resistance, and weak cohesion, and thus has been used by adding various modifiers to suit the characteristics of the place where it is used.
일반적으로 아스팔트 개질재의 종류로는 고무계열, 열가소성수지계열, 열경화성수지계열, 탄화수소계열, 필러계열, 섬유계열, 산화방지제, 환원제 등이 있으며 고무계열에는 천연고무, Styrene Butadiene Rubber(SBR), 폐타이어(Crumb Rubber) 등을 사용하며, 열가소성수지계열에는 Styrene Butadiene Styrene(SBS), Ethylene vinylacetate(EVA), Polyethylene(PE), Polypropylene(PP), Polyvinyl Chloride(PVC), Polyethylene Terephthalate(PET) 등이 사용되며, 열경화성수지계열에는 에폭시수지, 우레탄수지, 아크릴수지, 페놀수지, 석유수지 등이 이용되며 탄화수소계열에는 천연아스팔트, 길소나이트 등이 있다.In general, asphalt modifiers include rubber, thermoplastic, thermosetting, hydrocarbon, filler, fiber, antioxidant, reducing agent, and the like, natural rubber, styrene butadiene rubber (SBR), and waste tires. (Crumb Rubber) is used, and Styrene Butadiene Styrene (SBS), Ethylene vinylacetate (EVA), Polyethylene (PE), Polypropylene (PP), Polyvinyl Chloride (PVC), Polyethylene Terephthalate (PET), etc. In the thermosetting resin series, epoxy resins, urethane resins, acrylic resins, phenol resins, petroleum resins, and the like, include natural asphalt and gilsonite.
하지만, 지금까지 개발된 아스팔트 개질재는 사계절의 큰 기온차이에 의하여 시공 후 시간이 지나면 아스팔트가 저온균열과 피로균열에 대한 저항성이 감소되어 나타나는 포장의 균열 및 소성변형에 대한 문제점을 가지고 있으며, 공기와 햇빛에 노출됨으로써 발생되는 아스팔트 산화, 부착력 약화에 의한 골재탈리 등의 문제점이 나타나며 또한, 현장투입식 개질재(Plant-mix type)는 균일한 품질의 확보가 용이하지 않고, 사전혼합식(Pre-mix type) 개질 아스팔트는 구성물을 균일한 혼합이 쉽지 않고 개질재와 아스팔트 등의 각각의 구성물이 물리적인 결합에 의존하기에 저장성이 떨어져 보존에 어려움이 있다.However, the asphalt modifiers developed so far have problems with pavement cracking and plastic deformation, which appear to decrease the resistance to low temperature cracking and fatigue cracking after time due to large temperature differences in four seasons. Problems such as asphalt oxidation caused by exposure to sunlight, aggregate desorption due to weakening of adhesive strength, etc., and in addition, the field-type modifier (Plant-mix type) is not easy to secure uniform quality, and is pre-mixed. mix type) Modified asphalt has difficulty in preservation because it is not easy to uniformly mix the components, and each component such as the modified material and the asphalt is dependent on the physical bonding and has poor storage properties.
본 발명은 상기와 같은 문제점을 개선하기 위하여 발명된 것으로서, 개질 아스팔트의 각각의 구성물이 서로 물리적, 화학적으로 결합되어 저장안정성을 높이면서 개질 아스팔트의 물성이 더욱 향상시키는 고점도의 개질 아스팔트를 제공하는 것을 목적으로 한다.The present invention has been invented to improve the above problems, it is to provide a high-viscosity modified asphalt that each component of the modified asphalt is physically and chemically bonded to each other to increase the storage stability while further improving the physical properties of the modified asphalt. The purpose.
또한, 상기 개질 아스팔트를 사용하여 물성이 향상되는 개질 아스팔트콘크리트를 제공하는 것을 목적으로 한다.In addition, an object of the present invention is to provide a modified asphalt concrete having improved physical properties by using the modified asphalt.
또한, 폐타이어를 이용하여 친환경적이고 자원을 재활용하는 개질 아스팔트를 제공하는 것을 목적으로 한다.In addition, an object of the present invention is to provide an environmentally friendly and resource-recycling asphalt using waste tires.
본 발명은 아스팔트 60~95 중량%, 탈경화 고무분말 4.8~35 중량%, 폴리인산 0.2~5 중량%를 혼합하여 제조되는 것을 특징으로 하는 개질 아스팔트를 제공한다.The present invention provides a modified asphalt, characterized in that the mixture is prepared by mixing 60 to 95% by weight asphalt, 4.8 to 35% by weight de-cured rubber powder, 0.2 to 5% by weight polyphosphoric acid.
또한, 상기 탈경화 고무분말은 폐타이어 분말을 탈경화 하여 사용하는 것을 특징으로 하는 개질 아스팔트를 제공한다.In addition, the de-cured rubber powder provides a modified asphalt, characterized in that for use by de-curing the waste tire powder.
또한, 상기 개질 아스팔트에 유기폴리머를 탈경화 고무분말 대비 10~30중량%를 더 첨가하는 것을 특징으로 하는 개질 아스팔트를 제공한다.In addition, it provides a modified asphalt, characterized in that the addition of 10 to 30% by weight of the organic polymer to the modified asphalt compared to the decured rubber powder.
또한, 상기 유기폴리머는 천연고무, 스티렌부타디엔고무, 스티렌부타디엔스티렌, 분쇄폐타이어, 폴리에틸렌, 에틸렌비닐아세테이트, 폴리프로필렌, 폴리염화 비닐, 폴리에틸렌테레프탈레이트, 에폭시수지, 우레탄수지, 아크릴수지, 페놀수지, 석유수지, 폴리아마이드수지 중에서 하나 또는 2이상을 혼합하여 사용하는 것을 특징으로 하는 개질 아스팔트를 제공한다.In addition, the organic polymer is natural rubber, styrene butadiene rubber, styrene butadiene styrene, crushed waste tire, polyethylene, ethylene vinyl acetate, polypropylene, polyvinyl chloride, polyethylene terephthalate, epoxy resin, urethane resin, acrylic resin, phenol resin, It provides a modified asphalt characterized in that the mixture of one or two or more of petroleum resin, polyamide resin.
또한, 굵은골재 45~85 중량%, 잔골재 10~45 중량%, 채움재 5~10 중량%를 혼합한 100 중량부에 상기의 항의 개질 아스팔트 4~8 중량부를 혼합하여 제조되는 것을 특징으로 하는 내유동성 개질 아스팔트콘크리트를 제공한다.In addition, the flow resistance characterized in that it is prepared by mixing 4 to 8 parts by weight of the above modified asphalt to 100 parts by weight of 45 to 85% by weight of coarse aggregate, 10 to 45% by weight of fine aggregate, 5 to 10% by weight of filler material. Provide modified asphalt concrete.
또한, 상기 내유동성 개질 아스팔트콘크리트 100 중량부에 폴리프로필렌섬유, 폴리에스테르섬유, 아크릴섬유, 셀룰로우스 섬유, 카본섬유, 유리섬유, 아라미드섬유 중 선택되는 하나 또는 2이상을 혼합한 강도보강용 섬유 0.01~0.2 중량부를 첨가하는 것을 특징으로 하는 내유동성 개질 아스팔트콘크리트를 제공한다.In addition, strength reinforcing fiber mixed with one or two selected from polypropylene fiber, polyester fiber, acrylic fiber, cellulose fiber, carbon fiber, glass fiber, aramid fiber in 100 parts by weight of the flow-resistant modified asphalt concrete It provides a flow-resistant modified asphalt concrete, characterized in that the addition of 0.01 to 0.2 parts by weight.
또한, 상기 내유동성 개질 아스팔트콘크리트 100 중량부에 C45~C100인 FT왁스 0.1~0.5 중량부를 첨가하는 것을 특징으로 하는 개질 아스팔트콘크리트를 제공한다.In addition, it provides a modified asphalt concrete, characterized in that the addition of 0.1 to 0.5 parts by weight of FT wax C 45 ~ C 100 to 100 parts by weight of the flow-resistant modified asphalt concrete.
또한, 상기 내유동성 개질 아스팔트콘크리트 100 중량부에 시인성 확보를 위하여 무기질 안료 1~3 중량부를 첨가하는 것을 특징으로 하는 내유동성 개질 아스팔트콘크리트를 제공한다.In addition, the flow-resistant modified asphalt concrete provides a flow-resistant modified asphalt concrete, characterized in that to add 1 to 3 parts by weight of the inorganic pigment to ensure visibility.
또한, 굵은골재 70~90 중량%, 잔골재 7~27 중량%, 채움재 3~8 중량%를 혼합한 100 중량부에 상기의 항의 개질 아스팔트 4~8 중량부를 혼합하여 제조되는 것을 특징으로 하는 저소음 배수성 개질 아스팔트콘크리트를 제공한다.In addition, low noise drainage, characterized in that it is produced by mixing 4 to 8 parts by weight of the above modified asphalt to 100 parts by weight of 70 to 90% by weight of coarse aggregate, 7 to 27% by weight of fine aggregate, 3 to 8% by weight of filler material. Provide modified asphalt concrete.
또한, 상기 저소음 배수성 개질 아스팔트콘크리트 100 중량부에 폴리프로필렌섬유, 폴리에스테르섬유, 아크릴섬유, 셀룰로우스 섬유, 카본섬유, 유리섬유, 아라미드섬유 중 선택되는 하나 또는 2이상을 혼합한 강도보강용 섬유 0.01~0.2 중량부를 첨가하는 것을 특징으로 하는 저소음 배수성 개질 아스팔트콘크리트를 제공한다.In addition, the low-noise drainage modified asphalt concrete 100 parts by weight of polypropylene fiber, polyester fiber, acrylic fiber, cellulose fiber, carbon fiber, glass fiber, aramid fiber mixed with one or two or more selected from the strength reinforcing fiber It provides a low noise drainage modified asphalt concrete, characterized in that the addition of 0.01 to 0.2 parts by weight.
또한, 상기 저소음 배수성 개질 아스팔트콘크리트 100 중량부에 C45~C100인 FT왁스 0.1~0.5 중량부를 첨가하는 것을 특징으로 하는 저소음 배수성 개질 아스팔트콘크리트를 제공한다.In addition, the low noise drainage modified asphalt concrete provides a low noise drainage modified asphalt concrete, characterized in that the addition of 0.1 to 0.5 parts by weight of FT wax C 45 ~ C 100 to 100 parts by weight.
또한, 상기 저소음 배수성 개질 아스팔트콘크리트 100 중량부에 시인성 확보를 위하여 무기질 안료 1~3 중량부를 첨가하는 것을 특징으로 하는 저소음 배수성 개질 아스팔트콘크리트를 제공한다.In addition, the low noise drainage modified asphalt concrete provides low noise drainage modified asphalt concrete, characterized in that 1 to 3 parts by weight of inorganic pigments are added to ensure visibility.
또한 본 발명은 5mm 이하의 골재 80~97중량%, 채움재 3~20중량%를 혼합한 100중량부에 상기의 개질 아스팔트 4~8 중량부를 혼합하여 제조되는 것을 특징으로 하는 개질 아스팔트콘크리트를 제공한다.In another aspect, the present invention provides a modified asphalt concrete, characterized in that the mixture is prepared by mixing 4 to 8 parts by weight of the above modified asphalt to 100 parts by weight of 80 to 97% by weight aggregate, 3 to 20% by weight of the filler. .
또한, 상기 개질 아스팔트콘크리트 100 중량부에 폴리프로필렌섬유, 폴리에스테르섬유, 아크릴섬유, 셀룰로우스 섬유, 카본섬유, 유리섬유, 아라미드섬유 중 선택되는 하나 또는 2이상을 혼합한 강도보강용 섬유 0.01~0.2 중량부를 첨가하는 것을 특징으로 하는 개질 아스팔트콘크리트를 제공한다.In addition, the strength-reinforcing fiber 0.01 ~ 100 of the modified asphalt concrete mixed with one or two selected from polypropylene fiber, polyester fiber, acrylic fiber, cellulose fiber, carbon fiber, glass fiber, aramid fiber 0.01 ~ It provides a modified asphalt concrete, characterized in that adding 0.2 parts by weight.
또한, 상기 개질 아스팔트콘크리트 100 중량부에 C45~C100인 FT왁스 0.1~0.5 중량부를 첨가하는 것을 특징으로 하는 개질 아스팔트콘크리트를 제공한다.. In addition, it provides a modified asphalt concrete, characterized in that the addition of 0.1 to 0.5 parts by weight of FT wax C 45 ~ C 100 to 100 parts by weight of the modified asphalt concrete.
또한, 상기 개질 아스팔트콘크리트 100 중량부에 시인성 확보를 위하여 무기질 안료 1~3 중량부를 첨가하는 것을 특징으로 하는 개질 아스팔트콘크리트를 제공한다.In addition, to 100 parts by weight of the modified asphalt concrete to provide modified asphalt concrete, characterized in that to add 1 to 3 parts by weight of inorganic pigments to ensure visibility.
또한 본 발명은 굵은골재 70~90 중량%, 잔골재 7~27 중량%, 채움재 3~8 중량%를 혼합한 100 중량부에 상기의 개질 아스팔트 4~8 중량부를 혼합하여 제조되는 개질 아스팔트콘크리트를 기층으로 하고 그 상부에 5mm 이하의 골재 80~97중량%, 채움재 3~20중량%를 혼합한 100중량부에 상기의 개질 아스팔트 4~8 중량부를 혼합하여 제조되는 개질 아스팔트콘크리트를 표층으로 구성되는 것을 특징으로 하는 개질 아스팔트콘크리트를 제공한다.In addition, the present invention is based on modified asphalt concrete prepared by mixing 4-8 parts by weight of the modified asphalt to 100 parts by weight 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. The modified asphalt concrete prepared by mixing 4-8 parts by weight of the above modified asphalt to 100 parts by weight of 80 to 97% by weight of aggregates of 5 mm or less and 3 to 20% by weight of the filler is composed of a surface layer. It provides a modified asphalt concrete characterized in that.
이하 본 발명에 첨부된 도면을 참조하여 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, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter 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', and the like, are used at, or in close proximity to, numerical values when manufacturing and material tolerances inherent in the stated meanings are set forth, and an understanding of the present invention may occur. Accurate or absolute figures are used to help prevent unscrupulous infringers from unlawful use of the disclosure.
본 발명은 아스팔트콘크리트의 성능을 향상시키기 위해 아스팔트 60~95 중량%에 탈경화 고무분말 4.8~34.8 중량%, 폴리인산 0.2~5 중량%를 혼합하여 제조되는 개질 아스팔트와 상기 개질 아스팔트를 아스팔트콘크리트 제조공정 중에 첨가하여 제조되는 내구성과 접착성능이 개선된 개질 아스팔트콘크리트에 관한 것이다.In order to improve the performance of asphalt concrete, modified asphalt and the modified asphalt are prepared by mixing 60 to 95 wt% of asphalt concrete with 4.8 to 34.8 wt% of decured rubber powder and 0.2 to 5 wt% of polyphosphoric acid. The present invention relates to a modified asphalt concrete having improved durability and adhesion performance, which are added during the process.
상기 탈경화 고무분말는 고무를 분말상태로 분쇄하고 50~130℃로 가열하여 탈경화 고무분말을 제조하여 사용할 수 있으나 고무를 일정크기로 1차 분쇄한 후 가열하면서 고무분말에 압력을 주어 전단력에 의한 기계적 압력과 열에너지는 투입된 재료의 내부에너지(internal energy)로 축적되어 폭발 분쇄하는 방법을 통해 탈경화 고무분말을 제조하여 사용하는 것이 바람직하다.The de-cured rubber powder may be used to prepare a de-cured rubber powder by crushing the rubber in a powder state and heating it at 50 to 130 ° C., but by applying the pressure to the rubber powder while first crushing the rubber to a predetermined size, The mechanical pressure and thermal energy are preferably accumulated and used to prepare the decured rubber powder through the explosion and pulverization by the internal energy of the injected material.
도 1은 상기의 가열, 가압을 통하여 제조되는 탈경화 고무분말을 확대한 사진이고, 도 2는 도 1의 확대사진으로 상기와 같이 가열과 동시에 가압하여 제조되는 탈경화 고무분발은 도 1, 도 2에 도시된 바와 같이 입도의 표면이 화학적으로 활성화되며, 입자 표면의 상태가 미세 다공성 공극구조를 형성하므로 표면적이 극대화되어 화학적 반응성 및 미세공극에 의한 물리적 흡착(physisorption) 및 화학적 흡착(chemisorption)이 향상되어 아스팔트와 폴리인산과 쉽고 강력하게 결합되어 일반적인 고무분말 보다 아스팔트의 물성을 향상시키게 된다. 1 is an enlarged photograph of the decured rubber powder produced by the heating and pressurization, and FIG. 2 is an enlarged photograph of FIG. 1. As shown in Fig. 2, the surface of the particle size is chemically activated, and the state of the particle surface forms a microporous pore structure, thereby maximizing the surface area, thereby improving chemical reactivity and physical adsorption and chemical adsorption by the micropores. It is improved and easily and strongly combined with asphalt and polyphosphoric acid to improve the physical properties of asphalt than ordinary rubber powder.
상기 탈경화 고무분말은 천연고무, 스티엔부타디엔고무(Styrene Butadiene Rubber:SBR), 폐타이어를 사용할 수 있으나 자원의 재활용과 에너지 절감을 위하여 폐타이어를 사용하는 것이 바람직할 것이다.The decured rubber powder may be natural rubber, styrene butadiene rubber (SBR), waste tires, but it may be preferable to use waste tires for resource recycling and energy saving.
상기 폐타이어 분말은 탈경화 및 분쇄과정에서 0.03~3mm 크기의 것이 적당하 며 0.03mm보다 적을 경우 생산비용이 증가하여 효율적이지 못하며 3mm보다 클 경우 입자로 존재하여 바인더 물성을 해칠 수 있기 때문이며 타이어 제조 시 첨가되는 카본블랙, 산화방지제 등이 아스팔트의 물성을 증가시키는 역할을 하기에 본 발명 개질 아스팔트의 성능을 증가시킨다.The waste tire powder is suitable for the size of 0.03 ~ 3mm in the de-curing and crushing process, less than 0.03mm is not efficient to increase the production cost, if the waste tire powder is larger than 3mm may exist as particles to damage the binder properties and tire production Carbon black, antioxidants, and the like added during the role of increasing the physical properties of the asphalt increases the performance of the modified asphalt of the present invention.
일반적인 폐타이어 분말을 아스팔트에 첨가하여 사용할 경우 폐타이어 분말이 아스팔트에 물성을 개질하기 위해서는 장기간의 숙성과정이 필요하나 탈경화된 폐타이어 분말은 탈경화과정에서 폐타이어의 물리적 흡착(physisorption) 및 화학적 흡착(chemisorption)이 향상되어 숙정과정이 필요없어 개질 아스팔트의 제조시간을 단축시킬 수 있다.In general, when used waste tire powder is added to asphalt, waste tire powder needs long-term aging process to modify the physical properties of asphalt, but decured waste tire powder is used for physical adsorption and chemical Adsorption (chemisorption) is improved, eliminating the need for a scouring process, thereby reducing the production time of the modified asphalt.
상기 탈경화 고무분말의 사용량은 아스팔트 60~95 중량%에 1~35 중량%, 바람직하게는 3~29 중량%가 적당하며 3 중량% 미만일 경우 효과가 미미하여 29 중량% 이상일 경우는 오히려 고온, 저온 물성이 저감된다. 아스팔트에 탈경화 고무분말을 첨가하고 140~200℃에서 30~80분 혼합하면 아스팔트의 방향족성분이 탈경화 고무분말로 침투되어(swelling) 물리적인 결합을 이루고 침투된 방향족성분과 폴리인산이 결합(coupling)되어 탈경화 고무분말와 아스팔트간에 결합을 더욱 높여준다.The amount of the decured rubber powder is preferably 1 to 35% by weight, preferably 3 to 29% by weight, and less than 3% by weight to 60 to 95% by weight of asphalt. Physical properties are reduced. When decured rubber powder is added to asphalt and mixed for 30 to 80 minutes at 140 to 200 ° C, the aromatic component of asphalt is swelled into the decured rubber powder to form a physical bond, and the penetrated aromatic component and polyphosphoric acid are combined ( coupling) further enhances the bond between the de-cured rubber powder and asphalt.
본 발명에 사용되는 상기 아스팔트는 아스팔텐(asphaltene), 말텐(maltene), 수지(resin)로 구성되며 말텐상에 아스팔텐과 수지성분이 서로 뭉쳐있는 상태로 존재한다. 말텐은 비삼투성 재료인 방향족 구조의 성분과 삼투성 재료로 구분되며 방향족 재료는 총 아스팔트계 함량의 40~65%를 차지하고 짙은 갈색의 액체로 존재하고 삼투성 재료은 알킬 나프나와 알킬-방향족 구조의 성분으로 이루어져 있으며 점 성과 흐름에 관여하고 아스팔텐은 질소, 황, 산소를 약간 포함하고 있는 방향족 재료이며 점도, 연화점에 관여하고 수지성분은 접착성 및 연성에 영향을 미친다.Asphalt used in the present invention is composed of asphaltenes (asphaltene), maltene (maltene), resin (resin) and the asphaltenes and resin components on the maltenes are present in a state of agglomeration with each other. Malten is divided into non-osmotic materials of aromatic structure and osmotic materials. Aromatic materials account for 40-65% of the total asphalt content and exist as a dark brown liquid. Osmotic materials are alkyl naphna and alkyl-aromatic structures. It is composed of components and is involved in viscosity and flow. Asphaltene is an aromatic material containing a little nitrogen, sulfur and oxygen. It is involved in viscosity and softening point, and resin component affects adhesion and ductility.
본 발명에 사용되는 상기 폴리인산(Polyphosphoric Acid, PPA)은 오르토인산을 농축하거나 오산화인을 수화(水和)하여 생기는 축합산(縮合酸)으로 [Hn +2PnO3n +1] 또는 [H(HPO3)nOH]로 나타낸다. The polyphosphoric acid (PPA) used in the present invention is a condensed acid produced by concentrating orthophosphoric acid or hydrating phosphorus pentoxide [H n +2 P n O 3n +1 ] or It is represented by [H (HPO 3 ) n OH].
상업적으로 입수가능한 폴리인산은 P2O5 또는 H3PO4 당량이 산의 중량과 관련하여 퍼센트로 표현되어 특정된다. 따라서 소위 수퍼인산 분류가 있으며, 이의 H3PO4 당량은 100 보다 크다. 본 발명에서는 105~120%의 축합산을 사용할 수 있다. Commercially available polyphosphoric acid is specified by the P 2 O 5 or H 3 PO 4 equivalent expressed in percent relative to the weight of the acid. Thus there is a so-called superphosphate classification, its H 3 PO 4 equivalent is greater than 100. In the present invention, a condensation acid of 105 to 120% can be used.
상기 폴리인산을 아스팔트와 탈경화 고무분말에 첨가하면 폴리인산의 H+ 이온이 아스팔트와 탈경화 고무분말 내의 방향족 사슬과 연결되어 있는 질소(N), 산소(O), 황(S)등의 물질과 반응한 후, PPA- 이온과 방향족사슬이 커플링되어 아스팔텐과 탈경화 고무분말의 분산을 유도하고 이는 아스팔트의 연화점, 점도를 증가시키는 역할을 하게 된다. 도 3에 폴리인산과 아스팔트의 반응 메카니즘을 나타내고 있으며, 도 4에 폴리인산에 의한 아스팔텐과 탈경화 고무분말의 분산에 대하여 나타낸다.When the polyphosphoric acid is added to the asphalt and the decured rubber powder, substances such as nitrogen (N), oxygen (O) and sulfur (S) in which the H + ions of the polyphosphoric acid are connected to the aromatic chain in the asphalt and the decured rubber powder After reaction with, PPA - ion and aromatic chain are coupled to induce dispersion of asphaltene and decured rubber powder, which increases the softening point and viscosity of asphalt. The reaction mechanism of polyphosphoric acid and asphalt is shown in FIG. 3, and the dispersion | distribution of asphaltene and a dehardening rubber powder by polyphosphoric acid is shown in FIG.
따라서 폴리인산은 아스팔트의 물성을 증진시키기 위해 첨가되는 상기 탈경화 고무분말과 아스팔트간에 커플링제로 작용하여 결합력의 증진, 균일한 분산 등을 이루어 본 발명의 개질 아스팔트는 고점도를 나타내고 저장안정성을 증가시킨 다.Therefore, polyphosphoric acid acts as a coupling agent between the de-cured rubber powder and asphalt added to improve the physical properties of the asphalt, thereby improving the bonding strength, uniform dispersion, and the like. The modified asphalt of the present invention exhibits high viscosity and increases storage stability. All.
상기 폴리인산(PPA)의 사용량은 아스팔트 60~95 중량%에 0.01 중량%이상, 바람직하게는 0.2~5 중량%가 적당하다. 0.2 중량% 미만일 경우에 사용 효과가 미미하고 5 중량% 이상일 경우는 과도한 점도상승을 나타내어 저온균열에 취약할 우려가 있다.The amount of the polyphosphoric acid (PPA) is preferably 0.01% by weight or more, preferably 0.2-5% by weight, based on 60 to 95% by weight of asphalt. If the amount is less than 0.2% by weight, the use effect is insignificant, and if the amount is more than 5% by weight, excessive viscosity increase may occur, which may be vulnerable to low temperature cracking.
상기와 같이 아스팔트, 탈경화 고무분말, 폴리인산이 혼합되어 제조되는 개질 아스팔트는 각각의 구성성분이 서로 유기적으로 작용하여 기존의 개질 아스팔트 보다 뛰어난 물성을 갖게 된다.As described above, the modified asphalt prepared by mixing asphalt, decured rubber powder, and polyphosphoric acid has excellent properties than the conventional modified asphalt because each component organically acts on each other.
상기와 같이 형성되는 본 발명에 따른 개질 아스팔트에 유기폴리머를 더 첨가하여 개질 아스팔트의 물성을 더욱 향상시킬 수 있다.By further adding an organic polymer to the modified asphalt according to the present invention formed as described above can further improve the physical properties of the modified asphalt.
상기 유기폴리머는 탄성중합체(elastomer)인 고무계열과 열가소성 및 열경화성 합성수지로 나누어지는 소성중합체(plastomer)로 열가소성수지계열, 열경화성수지계열 등이 사용할 수 있다. 고무계열에는 천연고무, 스티렌 부타디엔 고무(Styrene Butadiene Rubber:SBR) 등을 사용할 수 있고, 열가소성수지계열에는 폴리아미드(Polyamide:PA), 에틸렌비닐아세테이트(Ethylene vinylacetate :EVA), 폴리에틸렌(Polyethylene:PE), 폴리프로필렌( Polypropylene:PP), 폴리비닐클로라이드(Polyvinyl Chloride:PVC), 폴리에틸렌텔레프탈레이트(Polyethylene Terephthalate:PET) 등이 사용될 수 있으며, 열경화성수지계열에는 에폭시수지, 우레탄수지, 아크릴수지, 페놀수지, 석유수지 등이 사용할 수 있을 것이다. 상기 유 기폴리머는 한 종류를 사용할 수 있고 아스팔트가 사용되는 용도 또는 장소에 따라 2가지 이상의 유기폴리머를 혼합하여 사용할 수 있을 것이다.The organic polymer may be a thermoplastic polymer, a thermosetting resin, or the like, as a plastic polymer divided into a rubber-based elastomer and a thermoplastic and thermosetting synthetic resin. Natural rubber and styrene butadiene rubber (SBR) can be used for the rubber series, and polyamide (PA), ethylene vinylacetate (EVA), and polyethylene (PE) for the thermoplastic resin series , Polypropylene (PP), Polyvinyl Chloride (PVC), Polyethylene Terephthalate (PET), etc. may be used, and thermosetting resins include epoxy resins, urethane resins, acrylic resins, phenolic resins, Petroleum resins may be used. The organic polymer may be used in one kind and may be used by mixing two or more organic polymers according to the use or place where asphalt is used.
상기 유기폴리머 중 스티렌 부타디엔 고무는 스티렌과 부타디엔의 블록공중합체의 일종으로 폴리부타디엔(Polybutiene) 사슬 양쪽 끝에 폴리스티렌(Polystrene) 사슬이 연결된 구조를 지니고 있으며, 열가소성 탄성체(Themo plastic elastomer)라 부르는 특수한 재료로 3mm이하의 것이 적당하며 3mm보다 클 경우 용융 및 분산에 많은 시간이 소요되어 경제적이지 못하다.Among the organic polymers, styrene butadiene rubber is a block copolymer of styrene and butadiene, and has a structure in which a polystyrene chain is connected at both ends of a polybutadiene chain and is a special material called a thermoplastic elastomer. Less than 3mm is suitable, and larger than 3mm is not economical because it takes much time for melting and dispersing.
상기 스티렌 부타디엔 고무는 아스팔트와 물리적인 결합을 이루어 저온성능을 현저히 개선시키며 사용량은 탈경화 고무분말의 사용량에 15~30중량%가 바람직하며 15%미만일 경우 그 효과가 미미하며 30 중량% 이상일 경우는 본 개질 아스팔트 제조비용이 상승하여 경제적이지 못하다.The styrene butadiene rubber is physically bonded with asphalt to significantly improve the low temperature performance, the amount is preferably 15 ~ 30% by weight of the amount of de-cured rubber powder, less than 15% the effect is insignificant and more than 30% by weight The cost of producing this modified asphalt is not economical.
또한 상기 유기폴리머 중 폴리아미드(Polyamide)는 상온에서 100% 고체인 열가소성 수지(Thermoplastic resin)로서 이합체를 이룬 지방산으로부터 제조되며 내열도가 우수하고 기계적 강도, 내마모성, 내약품성, 자기 소화성(난연성), 가공성 등이 우수한 특성을 가지고 있으며 사용량은 탈경화 고무분말의 사용량에 10~20중량%가 바람직하며 10%미만일 경우 그 효과가 미미하며 20 중량% 이상일 경우는 수지성분이 과다하여 개질아스팔트콘크리트 혼합물을 포설, 다짐할 때 다짐롤러의 표면에 붙어 시공성이 떨어질 우려가 있다.In addition, the polyamide of the organic polymer (Polyamide) is a thermoplastic resin (Thermoplastic resin) that is 100% solid at room temperature and is made from a dimerized fatty acid and has excellent heat resistance, mechanical strength, wear resistance, chemical resistance, self-extinguishing (flame retardant), It has excellent properties such as processability, and the amount of used is preferably 10 ~ 20% by weight to the amount of decured rubber powder. If it is less than 10%, the effect is insignificant. When laying and compacting, there is a possibility of sticking to the surface of the compacting roller and deteriorating workability.
상기와 같은 유기폴리머는 개질제로서 아스팔트와 혼합된 후, 개질아스팔트를 구성하고 아스팔트콘크리트의 제조과정에 첨가되어 내유동성, 온도감온성, 점성 등 기계적 강도 및 내구성을 증가시켜 아스팔트 콘크리트의 소성변성 저항성, 피로균열 저항성, 마모 저항성, 저온균열 저항성을 향상시키며 고점도로 개질된 아스팔트는 골재를 감싸는 피막두께를 증가시켜 골재간의 접착력이 증가되고 특히, 잔골재를 배제한 저소음 배수성 아스팔트콘크리트 혼합물의 제조에 적합한 고점도 개질아스팔트를 제조할 수 있을 것이다.The organic polymer as described above is mixed with asphalt as a modifier, constituting the modified asphalt and added to the manufacturing process of the asphalt concrete to increase mechanical strength and durability such as fluid resistance, temperature sensitivity, and viscosity, thereby improving plastic deformation resistance and fatigue of asphalt concrete. Asphalt modified by high viscosity with improved crack resistance, abrasion resistance and low temperature cracking resistance increases the film thickness surrounding the aggregates to increase the adhesion between aggregates, and especially high viscosity modified asphalt suitable for the production of low noise drainage asphalt concrete mixture excluding fine aggregates. It will be possible to manufacture.
상기의 본 발명에 따른 개질 아스팔트를 이용하여 내유동성 아스팔트콘크리트 또는 저소음 배수성 아스팔트콘크리트를 제조할 수 있다.By using the modified asphalt according to the present invention it can be produced flow-resistant asphalt concrete or low noise drainage asphalt concrete.
상기 내유동성 개질 아스팔트콘크리트는 굵은골재 45~85 중량%, 잔골재 10~45 중량%, 채움재 5~10 중량%를 혼합한 100 중량부에 상기의 구성으로 제조되는 개질 아스팔트 4~8 중량부를 혼합하여 제조할 수 있다.The flow-resistant modified asphalt concrete is mixed 4 ~ 8 parts by weight of modified asphalt prepared in the above configuration to 100 parts by weight of 45 ~ 85% by weight coarse aggregate, 10 ~ 45% by weight fine aggregate, 5 ~ 10% by weight filler It can manufacture.
또한, 저소음 배수성 개질 아스팔트콘크리트는 굵은골재 70~90 중량%, 잔골재 7~27 중량%, 채움재 3~8 중량%를 혼합한 100 중량부에 상기의 구성으로 제조되는 개질 아스팔트 4~8 중량부를 혼합하여 제조하거나 5mm 이하의 골재 80~97중량%, 채움재 3~20중량%를 혼합한 100중량부에 상기의 구성으로 제조되는 개질 아스팔트 4~8 중량부를 혼합하여 저소음의 배수성 개질 아스팔트콘크리트를 제조할 수 있다.In addition, low noise drainage modified asphalt concrete is mixed 4 ~ 8 parts by weight of modified asphalt produced in the above configuration to 100 parts by weight of 70 ~ 90% by weight coarse aggregate, 7 ~ 27% by weight fine aggregate, 3 ~ 8% by weight filler. To prepare a low noise drainage modified asphalt concrete by mixing 4 to 8 parts by weight of the modified asphalt prepared by the above configuration to 100 parts by weight of 80 to 97% by weight of aggregates of less than 5mm, 3 to 20% by weight of the filler. Can be.
상기 내유동성 개질 아스팔트콘크리트와 저소음 배수성 개질 아스팔트콘크리트는 각각 단독으로 사용될 수 있으나 내유동성 개질 아스팔트콘크리트를 기층으로 하고 그 상부에 저소음 배수성 개질 아스팔트콘크리트를 표층으로 구성되는 아스팔 트콘크리트로 사용하는 것이 바람직할 것이다.The flow-resistant modified asphalt concrete and low-noise drainage-modified asphalt concrete may be used alone, respectively, but it is preferable to use the flow-resistant modified asphalt concrete as a base layer and use the low-noise drainage-modified asphalt concrete as asphalt concrete composed of surface layers. something to do.
또한, 상기의 개질 아스팔트콘크리트의 물성을 더욱 향상시키기 위해 폴리프로필렌섬유, 폴리에스테르섬유, 아크릴섬유, 셀룰로우스섬유, 카본섬유, 유리섬유, 아라미드섬유 등의 합성섬유를 첨가할 수 있다. 첨가량은 개질 아스팔트콘크리트 100 중량부에 상기 합성섬유 중 하나 또는 2이상을 혼합한 강도보강용 섬유 0.01~0.2 중량부를 첨가하는 것이 바람직하다. In addition, synthetic fibers such as polypropylene fiber, polyester fiber, acrylic fiber, cellulose fiber, carbon fiber, glass fiber and aramid fiber may be added to further improve the physical properties of the modified asphalt concrete. The amount 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 to 100 parts by weight of modified asphalt concrete.
또한, 상기의 개질 아스팔트콘크리트의 물성을 더욱 향상시키기 위해 C45~C100(탄소수가 45~100개)인 FT왁스(Fischer-Tropsch공법으로 제조된 왁스)를 첨가할 수 있다. FT왁스는 아스팔트내의 파라핀계왁스보다 탄소사슬이 길어 개질아스팔트의 취성, 점성거동을 향상시켜 개질아스팔트콘크리트 혼합물의 생산온도 및 다짐온도를 낮추고 비용을 절감시키며 개질아스팔트콘크리트 100 중량부에 0.01~2 중량부, 바람직하게는 0.1~0.5 중량부가 적당하다. 0.1 중량부 미만일 경우는 효과가 미미하며 0.5 중량부 이상일 경우 과다하여 고온에서의 온도감온성을 떨어뜨린다.In addition, in order to further improve the physical properties of the modified asphalt concrete, C 45 ~ C 100 (45 ~ 100 carbon atoms) FT wax (wax manufactured by Fischer-Tropsch method) can be added. FT wax has longer carbon chain than paraffin wax in asphalt, improving the brittleness and viscosity behavior of modified asphalt concrete, reducing production temperature and compaction temperature of modified asphalt concrete mixture, reducing cost Parts, preferably 0.1 to 0.5 parts by weight is suitable. If it is less than 0.1 part by weight, the effect is insignificant, and if it is 0.5 parts by weight or more, it is excessively reduced in temperature sensitivity at high temperature.
또한, 상기 개질 아스팔트콘크리트의 시인성을 향상시키기 위해 색상을 가지는 이산화티탄(Titanium dioxide), 산화철적(Iron oxide red) 또는 산화철황(Iron oxide yellow), 산화크롬(Chromium oxide), 산화아연 (Zinc oxide)등의 무기질 안료를 첨가할 수 있으며 무기질 안료의 첨가량은 개질 아스팔트 콘크리트 100 중량부에 무기질 안료 1~3 중량부를 첨가하는 것이 바람직하다.In addition, titanium dioxide, iron oxide red or iron oxide yellow, chromium oxide, and zinc oxide having color to improve the visibility of the modified asphalt concrete. Inorganic pigments, etc.), and the amount of the inorganic pigment added is preferably 1 to 3 parts by weight of the inorganic pigment to 100 parts by weight of the modified asphalt concrete.
본 발명에 의한 개질 아스팔트 및 개질 아스팔트콘크리트에 의하면, 본 발명의 개질 아스팔트는 고점도의 아스팔트 바인더를 제공하여 골재의 피막두께를 증가시키고 골재간의 결합을 견고히 하며 산화를 억제하며, 개질 아스팔트를 사용한 개질 아스팔트콘크리트는 소성변형, 저온 균열과 피로 균열에 대한 저항성이 증가되어 도로의 수명을 증대시키는 내유동성 개질아스팔트콘크리트와 친환경 저소음 배수성 개질아스팔트콘크리트로 경제성이 높은 도로환경을 제공한다. According to the modified asphalt and the modified asphalt concrete according to the present invention, the modified asphalt of the present invention provides a high-viscosity asphalt binder to increase the film thickness of aggregates, strengthen the bonding between aggregates and inhibit oxidation, and modified asphalt using modified asphalt Concrete provides high economical road environment with flow resistant modified asphalt concrete which increases the life of road by increasing resistance to plastic deformation, low temperature cracking and fatigue cracking, and eco-friendly low noise drainable modified asphalt concrete.
또한, 본 발명은 안료를 첨가하여 시인성과 도시환경을 개선시킬 수 있는 효과가 있다.In addition, the present invention has the effect of improving the visibility and urban environment by adding a pigment.
또한, 본 발명은 FT왁스를 첨가하여 개질 아스팔트콘크리트 혼합물의 혼합온도를 낮추어 탄소배출의 저감 및 생산비용의 절감효과가 있다. In addition, the present invention has the effect of reducing the carbon emissions and the production cost by lowering the mixing temperature of the modified asphalt concrete mixture by adding FT wax.
이하 본 발명의 개질 아스팔트 및 상기 개질 아스팔트를 이용한 개질 아스팔트콘크리트를 제조하는 실시예를 나타내지만, 이에 한정되는 것은 아니다.Hereinafter, examples of producing modified asphalt of the present invention and modified asphalt concrete using the modified asphalt are shown, but are not limited thereto.
실시예Example 1 : One : 내유동성Fluid resistance 개질 아스팔트 Modified asphalt
가. 개질 아스팔트 제조end. Modified asphalt manufacturing
1. 종래의 내유동성 개질 아스팔트 제조1. Manufacturing of conventional flow resistant modified asphalt
KS M 2201규격의 아스팔트 91.5중량%, 개질재(폐타이어 분말) 7중량%, SBS(Styrene Butadiene Styrene) 1.5중량%를 혼합하여 제조하였다.It was prepared by mixing 91.5% by weight of asphalt of KS M 2201 standard, 7% by weight of modifier (waste tire powder), and 1.5% by weight of SBS (Styrene Butadiene Styrene).
2. 본 발명에 따른 내유동성 개질 아스팔트 제조2. Preparation of Flow Resistance Modified Asphalt According to the Present Invention
KS M 2201규격의 아스팔트 91중량%, 탈경화 폐타이어 분말 7중량%, SBS(Styrene Butadiene Styrene) 1.5중량%, H3PO4 당량 105%인 폴리인산 0.5중량%를 혼합하여 제조하였다.91% by weight of asphalt of KS M 2201 standard, 7% by weight of de-cured waste tire powder, 1.5% by weight of SBS (Styrene Butadiene Styrene), and 0.5% by weight of polyphosphoric acid having a 105% H 3 PO 4 equivalent.
상기의 제조된 개질 아스팔트를 물성테스트를 측정하여 표 1에 나타내었다.Table 1 shows the physical properties of the prepared modified asphalt test.
A는 종래의 내유동성 개질 아스팔트, B는 본 발명에 따른 내유동성 개질 아스팔트이다.A is a conventional flow resistant modified asphalt, B is a flow resistant modified asphalt according to the present invention.
상기 표 2에 나타난 바와 같이 본 발명에 따른 개질 아스팔트를 사용한 내유동성 개질 아스팔트(B)는 종래의 개질재를 첨가한 내유동성 아스팔트(A)와 비교하여 모든 부분에서 물성이 뛰어난 것을 알 수 있다.As shown in Table 2, it can be seen that the flow-resistant modified asphalt (B) using the modified asphalt according to the present invention has excellent physical properties in all parts compared to the flow-resistant asphalt (A) to which the conventional modifier is added.
실시예Example 2 : 저소음 배수성 개질 아스팔트 2: low noise drainage modified asphalt
가. 개질 아스팔트 제조end. Modified asphalt manufacturing
1. 종래의 저소음 배수성 개질아스팔트 제조1. Manufacturing of conventional low noise drainage modified asphalt
KS M 2201규격의 아스팔트 88중량%, 개질재(폐타이어 분말) 10중량%, SBS(Styrene Butadiene Styrene) 2.0중량%를 혼합하여 제조하였다.KS M 2201 standard asphalt 88% by weight, modified material (waste tire powder) 10% by weight, was prepared by mixing 2.0% by weight of SBS (Styrene Butadiene Styrene).
2. 본 발명에 따른 저소음 배수성 개질 아스팔트 제조2. Manufacture of low noise drainage modified asphalt according to the present invention
KS M 2201규격의 아스팔트 87중량%, 탈경화 폐타이어 분말 10중량%, SBS(Styrene Butadiene Styrene) 2.0중량%, H3PO4 당량 105%인 폴리인산 1.0중량%를 혼합하여 제조하였다.KS M 2201 standard asphalt 87% by weight, decured waste tire powder 10% by weight, SBS (Styrene Butadiene Styrene) 2.0% by weight, H 3 PO 4 equivalent 105% by weight of polyphosphoric acid was prepared by mixing.
상기의 제조된 개질 아스팔트를 물성테스트를 측정하여 표 1에 나타내었다.Table 1 shows the physical properties of the prepared modified asphalt test.
A는 종래의 저소음 배수성 개질 아스팔트, B는 본 발명에 따른 저소음 배수성 개질 아스팔트이다.A is a conventional low noise drainage modified asphalt, B is a low noise drainage modified asphalt according to the present invention.
상기 표 2에 나타난 바와 같이 본 발명에 따른 개질 아스팔트를 사용한 저소음배수성 개질 아스팔트(B)는 종래의 개질재를 첨가한 배수성 아스팔트(A)와 비교하여 모든 부분에서 물성이 뛰어난 것을 알 수 있다.As shown in Table 2, it can be seen that the low noise drainage modified asphalt (B) using the modified asphalt according to the present invention has excellent physical properties in all parts as compared to the drainable asphalt (A) to which the conventional reforming material is added.
실시예Example 3 : 3: 내유동성Fluid resistance 개질 아스팔트콘크리트 Modified Asphalt Concrete
일반 밀입도아스팔트콘크리트, 종래의 개질재를 사용한 개질아스팔트콘크리트 및 본 발명에 따른 개질 아스팔트를 사용한 개질 아스팔트콘크리트(이하, '내유동성 개질아스팔트콘크리트'라 한다)를 각각 제조하여 물성을 비교 실시하였다.General compacted asphalt concrete, modified asphalt concrete using conventional modified materials, and modified asphalt concrete using modified asphalt according to the present invention (hereinafter, referred to as "flow-resistant modified asphalt concrete") were prepared and compared, respectively.
가. 아스팔트콘크리트 제조end. Asphalt Concrete Manufacturing
1. 일반 밀입도아스팔트콘크리트 제조1. General compacted asphalt concrete manufacturing
KS F 2357규격의 굵은골재 55 중량%, KS F 2357규격의 잔골재 36.4 중량%, KS F 3501규격의 채움재 2.8 중량%, KS M 2201규격의 아스팔트 5.8 중량%를 혼합하여 제조하였다.55% by weight of coarse aggregate of KS F 2357 standard, 36.4% by weight of fine aggregate of KS F 2357 standard, 2.8% by weight of filling material of KS F 3501 standard, and 5.8% by weight of asphalt of KS M 2201 standard were prepared.
2. 종래의 개질재를 사용한 개질아스팔트콘크리트 제조2. Modified asphalt concrete production using conventional modifier
KS F 2357규격의 굵은골재 55 중량%, KS F 2357규격의 잔골재 36.4 중량%, KS F 3501규격의 채움재 2.8 중량%, 상기에서 제조된 종래의 내유동성 개질 아스팔트 5.8중량%를 혼합하여 제조하였다.55% by weight of coarse aggregate of KS F 2357 standard, 36.4% by weight of fine aggregate of KS F 2357 standard, 2.8% by weight of filler of KS F 3501 standard, and 5.8% by weight of conventional flow-resistant modified asphalt prepared above were prepared.
3. 본 발명에 따른 개질 아스팔트를 사용한 내유동성 개질아스팔트 콘크리트 제조3. Manufacture of flow resistant modified asphalt concrete using modified asphalt according to the present invention
KS F 2357규격의 굵은골재 55 중량%, KS F 2357규격의 잔골재 36.4 중량%, KS F 3501규격의 채움재 2.8 중량%, 상기에서 제조된 본 발명에 따른 내유동성 개질 아스팔트 5.8 중량%를 혼합하여 내유동성 개질아스팔트콘크리트를 제조하였다.55% by weight of coarse aggregate of KS F 2357 standard, 36.4% by weight of fine aggregate of KS F 2357 standard, 2.8% by weight of filler material of KS F 3501 standard, by mixing 5.8% by weight of flow resistant modified asphalt according to the present invention Flow modified modified asphalt concrete was prepared.
나. 비교 실험I. Comparative experiment
상기와 같이 제조된 각각의 아스팔트콘크리트를 180℃로 가열하여 믹서로 교반하고 공시체를 제작한 후, 마샬안정도, 간접인장강도, 회복탄성계수, 동적안정도를 측정하였다.Each asphalt concrete prepared as described above was heated to 180 ° C., stirred with a mixer, and a specimen was prepared, and then Marshall stability, indirect tensile strength, recovery elastic modulus, and dynamic stability were measured.
1. 실험 방법1. 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) Marshall stability test is to measure the plastic resistance to the flow of asphalt mixture and was measured according to the test method for resistance to plastic flow of bitumen mixture using 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) Indirect tensile strength test is a measurement method to grasp the indirect strength of the splitting tensile of asphalt concrete. It was measured according to the indirect tensile strength test (KS F 2382) of bitumen mixture.
3) 회복탄성계수시험은 차량의 반복적인 하중에 대한 아스팔트 혼합물의 온도별 회복변형 거동특성을 모사하기 위한 측정방법으로 회복탄성계수시험(KS F 2376)에 따라 5℃, 25℃, 40℃의 온도에서 각각 저온, 상온, 고온 특성을 측정하였다.3) The recovery elastic modulus test is a measurement method to simulate the recovery strain behavior of asphalt mixtures with repeated loading of the vehicle. The low temperature, room temperature, and high temperature characteristics were measured at temperatures, 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) The dynamic stability according to the wheel tracking test is a test for evaluating the plastic deformation dynamic resistance of the asphalt mixture. The dynamic stability (times / mm) measured at this time is according to the wheel tracking test (KS F 2374) method of the asphalt concrete mixture. Measured.
2. 실험 결과2. Experimental Results
실험 결과는 표 1과 같다. A는 일반 아스팔트콘크리트, B는 종래의 개질재를 사용한 개질아스팔트콘크리트, C는 본 발명에 따른 개질 아스팔트를 사용한 내유동성 개질아스팔트콘크리트이다.The experimental results are shown in Table 1. A is general asphalt concrete, B is modified asphalt concrete using a conventional modifier, C is a flow resistant modified asphalt concrete using the modified asphalt according to the present invention.
상기 표 1에 나타난 바와 같이 본 발명에 따른 개질 아스팔트를 사용한 커플링된 내유동성 개질아스팔트콘크리트(C)는 개질재를 첨가하지 않은 일반 아스팔트콘크리트(A)와 비교하여 0.5배에서 많이는 3배 정도의 뛰어난 물성을 가지고 있음을 알 수 있다.As shown in Table 1, the coupled flow-resistant modified asphalt concrete (C) using the modified asphalt according to the present invention is 0.5 to 3 times as much as general asphalt concrete (A) without addition of the modifier. It can be seen that it has excellent physical properties.
또한, 종래의 개질재를 첨가한 개질아스팔트콘트리트(B)와 비교하여 20%에서 최고 60%의 물성이 향상되었고, 회복탄성계수는 상온(25℃) 기준으로 저온(5℃)과 고온(40℃)에서의 값의 편차가 줄어들어 극한 온도에 따른 반응이 안정해지므로 감온성이 향상되었음을 알 수 있다.In addition, compared with the conventional modified asphalt concrete (B) to which the conventional modifier is added, the physical properties of 20% to up to 60% are improved, and the recovery elastic modulus is low temperature (5 ° C) and high temperature (40 ° C) based on room temperature (25 ° C). It can be seen that the temperature sensitivity is improved because the variation in the value at ℃) is reduced and the reaction according to the extreme temperature is stabilized.
실시예Example 4 : 저소음 배수성 개질 아 4: low noise drainage reforming ah 스팔트콘크리트Spun Concrete
일반 투수성아스팔트콘크리트, 종래의 개질재를 사용한 배수성 아스팔트콘크리트 및 본 발명에 따른 개질 아스팔트를 사용한 저소음 배수성 개질 아스팔트콘크리트를 각각 제조하여 물성을 비교 실시하였다.General water-permeable asphalt concrete, drained asphalt concrete using conventional modified materials and low noise drained modified asphalt concrete using modified asphalt according to the present invention were prepared and compared with each other.
가. 각각의 아스팔트콘크리트 제조end. Manufacture of each asphalt concrete
1. 일반 투수성아스팔트 콘크리트 제조1. General permeable asphalt concrete manufacturing
KS F 2357규격의 굵은골재 80 중량%, KS F 2357규격의 잔골재 11 중량%, KS F 3501규격의 채움재 3.7 중량%, KS M 2201규격의 아스팔트 5.3 중량%를 혼합하여 제조하였다.80% by weight of coarse aggregate of KS F 2357 standard, 11% by weight of fine aggregate of KS F 2357 standard, 3.7% by weight of filler of KS F 3501 standard, 5.3% by weight of asphalt of KS M 2201 standard were prepared.
2. 종래의 개질재를 사용한 배수성 아스팔트콘크리트 제조2. Preparation of Drainable Asphalt Concrete Using Conventional Modifiers
KS F 2357규격의 굵은골재 80 중량%, KS F 2357규격의 잔골재 11 중량%, KS F 3501규격의 채움재 3.7 중량%, 상기에서 제조된 종래의 저소음 배수성 개질 아스팔트 5.3중량%를 혼합하여 제조하였다.80% by weight of coarse aggregate of KS F 2357 standard, 11% by weight of fine aggregate of KS F 2357 standard, 3.7% by weight of filler of KS F 3501 standard, and 5.3% by weight of conventional low noise drainage modified asphalt prepared above were prepared.
3. 본 발명에 따른 개질 아스팔트를 사용한 저소음 배수성 개질아스팔트콘크리트 제조3. Manufacture of low noise drainage modified asphalt concrete using modified asphalt according to the present invention
KS F 2357규격의 굵은골재 80 중량%, KS F 2357규격의 잔골재 11 중량%, KS F 3501규격의 채움재 3.7 중량%, 상기에서 제조된 본 발명에 따른 저소음 배수성 개질 아스팔트 5.3 중량%를 혼합하여 저소음배수성 개질아스팔트콘크리트를 제조하였다.Low noise by mixing 80% by weight of coarse aggregate of KS F 2357 standard, 11% by weight of fine aggregate of KS F 2357 standard, 3.7% by weight of filler material of KS F 3501 standard, and 5.3% by weight of low noise drainage modified asphalt according to the present invention. Drainable modified asphalt concrete was prepared.
나. 비교 실험I. Comparative experiment
상기와 같이 제조된 각각의 아스팔트콘크리트를 175℃로 가열하여 믹서로 교반하고 공시체를 제작한 후, 마샬안정도, 수침마샬잔류안정도, 칸타브로 손실율, 동적안정도, 투수능력, 공극율을 측정하였다.Each asphalt concrete prepared as described above was heated to 175 ℃ stirred with a mixer to prepare a specimen, Marshall stability, immersion Marshall residue stability, Cantabro loss rate, dynamic stability, water permeability, porosity was measured.
1. 실험 방법1. 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) Marshall stability test is to measure the plastic resistance to the flow of asphalt mixture and was measured according to the test method for resistance to plastic flow of bitumen mixture using Marshall tester (KS F 2337).
2) 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.2) The dynamic stability according to the wheel tracking test is a test for evaluating the plastic deformation dynamic resistance of the asphalt mixture. The dynamic stability (times / mm) measured at this time is determined according to the wheel tracking test (KS F 2374) of the asphalt concrete mixture. Measured.
3) 투수능력시험은 배수성아스팔트 혼합물 포장의 투수성능을 평가하기 위해 실시하며 실내에서 제작한 공시체를 사용하여 실내투수시험을 투수시험방법(KS F 2322)에 따라 측정하였다.3) Permeability test was conducted to evaluate the permeability of the drainage asphalt mixture package. Indoor permeability test was performed according to the permeability test method (KS F 2322) using the specimen prepared indoors.
4) 공극율시험은 투수성 및 배수성 아스팔트 혼합물의 공극율을 측정하기 위해 실시하며 일반적으로 마샬시험의 밀도와 이론밀도를 이용하여 AKTIF안정도 시험방법(KS F 2337)에 따라 공시체의 공극율을 산출한다.4) Porosity test is carried out to measure the porosity of permeable and drainable asphalt mixture. Generally, the porosity of specimens is calculated according to the AKTIF stability test method (KS F 2337) using the density and theoretical density of Marshall test.
5) 칸타브로 시험은 투수성, 배수성혼합물의 골재 비산저항성으로부터 표층용 재료로서의 타당성을 검증하기 위하여 실시하며 아스팔트 혼합물의 칸타브로 시험방법(KS F 2492)에 따라 측정한다.5) The cantabro test is carried out to verify the feasibility of aggregates from permeability and drainage mixtures as a surface material and is measured according to the cantabro test method for asphalt mixtures (KS F 2492).
2. 실험 결과2. Experimental Results
실험 결과는 표 2와 같다. A는 일반 투수성아스팔트 콘크리트, B는 종래의 개질재를 사용한 배수성아스팔트콘크리트, C는 본 발명에 따른 개질 아스팔트를 사용한 저소음배수성 개질 아스팔트콘크리트이다.The experimental results are shown in Table 2. A is a general permeable asphalt concrete, B is a drainable asphalt concrete using a conventional reforming material, C is a low noise drainage modified asphalt concrete using the modified asphalt according to the present invention.
상기 표 2에 나타난 바와 같이 본 발명에 따른 개질 아스팔트를 사용한 저소음배수성 개질아스팔트콘크리트(C)는 개질재를 첨가하지 않은 일반 투수아스팔트콘크리트(A)와 비교하여 2배에서 많이는 4배 정도의 뛰어난 물성을 가지고 있음을 알 수 있다.As shown in Table 2, the low-noise drainage modified asphalt concrete (C) using the modified asphalt according to the present invention is superior to two times as much as four times as compared to the general pitched asphalt concrete (A) without addition of the modifier. It can be seen that it has physical properties.
또한, 종래의 개질재를 첨가한 배수성아스팔트 콘트리트(B)와 비교하여 20%에서 최고 180%의 물성이 향상되었다.In addition, the physical properties of 20% to up to 180% were improved compared to the drainable asphalt concrete (B) to which the conventional modifier was added.
도 1는 본 발명의 탈경화 고무분말을 나타내는 사진.1 is a photograph showing the decured rubber powder of the present invention.
도 2는 도 1의 탈경화 고무분말의 확대사진.FIG. 2 is an enlarged photograph of the decured rubber powder of FIG. 1. FIG.
도 3은 본 발명에 따른 폴리인산과 아스팔트의 결합 메카니즘.3 is a coupling mechanism of polyphosphoric acid and asphalt according to the present invention.
도 4는 본 발명에 따른 폴리인산에 의한 탈경화 고무분말, 아스팔텐-레진의 분산모형도.Figure 4 is a dispersion model of decured rubber powder, asphaltene-resin with polyphosphoric acid according to the present invention.
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| CN102746679A (en) * | 2012-07-11 | 2012-10-24 | 武汉市迪睿道路科技有限公司 | Nondestructive pavement crack mending material, preparation method and mending process |
| CN103788668A (en) * | 2013-12-30 | 2014-05-14 | 长沙理工大学 | Composite modified asphalt and preparation method thereof |
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