KR20200111927A - Recyclable additive for asphalt concrete using waste oil and recycle asphalt concrete composition using the same - Google Patents
Recyclable additive for asphalt concrete using waste oil and recycle asphalt concrete composition using the same Download PDFInfo
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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
- C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
- C04B18/049—Wastes from oil or other wells, e.g. drilling mud
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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
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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
- C04B18/18—Waste materials; Refuse organic
- C04B18/20—Waste materials; Refuse organic from macromolecular compounds
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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
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0032—Controlling the process of mixing, e.g. adding ingredients in a quantity depending on a measured or desired value
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
Description
본 발명은 산업 장비에 사용된 폐윤활유 및 차량 폐엔진오일 등을 정제하고 폐유리 접착 수지를 용융시켜 혼합 개질화한 아스팔트 콘크리트용 재생첨가제 및 상기 재생첨가제를 포함하는 재생 아스팔트 콘크리트 조성물에 관한 것이다.The present invention relates to a regeneration additive for asphalt concrete obtained by refining waste lubricating oil and vehicle waste engine oil used in industrial equipment, melting and modifying waste glass adhesive resin, and a regenerated asphalt concrete composition comprising the regenerated additive.
도로포장용 아스팔트 콘크리트는 골재, 시멘트, 아스팔트 등이 혼합된 물질로서, 아스팔트가 노후되어 폐기되는 폐아스팔트 콘크리트(이하, '폐아스콘')는 건설 산업폐기물로 분류되며 매년 대량 발생하고 있다. 이와 같은 대량의 폐아스콘을 처리하기 위해서는 방대한 매립공간이 필요하여 자연을 훼손하게 되며, 매립물로부터 빗물에 의해 씻겨 나온 아스팔트나 잔류시멘트 등이 지층으로 흘러들어갈 경우 지하수와 하천을 차례로 오염시키게 되어 환경오염의 주요 원인으로 작용하고 있다.Asphalt concrete for road pavement is a mixture of aggregate, cement, asphalt, etc., and waste asphalt concrete (hereinafter referred to as'waste ascon'), which is discarded after the asphalt is aged, is classified as a construction industrial waste and is generated in large quantities every year. To treat such a large amount of waste ascon, a vast landfill space is required, which damages nature, and if asphalt or residual cement washed out by rainwater from the landfill flows into the strata, it contaminates the groundwater and river in turn. It is acting as a major cause of pollution.
근래에, 폐아스콘을 재활용하여 순환골재로 활용하는 기술들이 소개되고 있다. In recent years, technologies for recycling waste ascon and utilizing it as recycled aggregate have been introduced.
등록특허 제10-632203호(폐 아스팔트 콘크리트를 활용한 도로포장용 아스팔트콘크리트), 등록특허 제10-672751호(순환 골재를 이용한 포장재) 등은 폐아스콘을 첨가제와 함께 아스팔트에 배합하여 사용하거나 폐아스콘을 골재로 이용하는 기술들이다. 다만, 이러한 기술들은 폐아스콘 재활용 시 노화된 아스팔트의 물성 복원은 고려되어 있지 않다. Registration Patent No. 10-632203 (asphalt concrete for road pavement using waste asphalt concrete), and Registration Patent No. 10-672751 (paving material using recycled aggregate), etc. are used by mixing waste ascon with additives or These are techniques that use as aggregates. However, these technologies do not consider restoring the properties of aged asphalt when recycling waste ascon.
폐아스콘 순환골재 사용시, 순환골재에 묻어 있는 노화된 아스팔트는 재생 아스팔트 콘크리트(이하, '재생 아스콘')의 강도 저하, 취성 파괴 등의 원인이 되므로 이를 방지하기 위해 노화된 아스팔트의 물성을 복원시키기 위한 재생첨가제 기술도 다수 소개되어 있다.When using waste ascon recycled aggregate, aged asphalt buried in recycled aggregate may cause strength reduction and brittle destruction of recycled asphalt concrete (hereinafter referred to as'recycled ascon'). To prevent this, restore the physical properties of aged asphalt. Many regeneration additive technologies are also introduced.
등록특허 제10-0212910호(폐아스콘 재생용 첨가제 및 폐아스콘의 재 포장방법)은 중질유 접촉 분해공정에서 부생되는 슬러리 오일을 폐아스콘의 재생첨가제로 사용하는 것을 개시하고 있고, 등록특허 10-0898393호(재생 아스콘 및 그의 제조방법)에서는 폐아스콘의 가열 직후 오일과 폐비닐수지의 열분해물로 이루어지는 수지기반 오일첨가제를 노화된 아스팔트의 재생첨가제로 사용하는 것을 개시하고 있다.Registration Patent No. 10-0212910 (additive for recycling waste ascon and method for repacking waste ascon) discloses the use of slurry oil produced by the heavy oil catalytic cracking process as a recycling additive for waste ascon. No. (regenerated ascon and its manufacturing method) discloses the use of a resin-based oil additive composed of oil and thermal decomposition products of waste vinyl resin as a recycling additive for aged asphalt immediately after heating of waste ascon.
등록특허 제10-1863295호(노화 아스팔트 도로포장의 재활용을 위한 중온 재생첨가제 조성물, 및 폐아스콘과 중온 재생 첨가재 조성물을 포함하는 아스팔트 콘크리트 조성물), 등록특허 제10-1811978호(중온 재생첨가제, 그 제조방법 및 이를 함유한 순환 아스팔트 혼합물) 연화제, 박리방지제, 점착제(점도조절제) 등을 포함하는 중온 재생첨가제 조성물을 개시하고 있다.Registration Patent No. 10-1863295 (Medium temperature regeneration additive composition for recycling of aging asphalt road pavement, and asphalt concrete composition including waste ascon and medium temperature regeneration additive composition), Registration Patent No. 10-1811978 (Medium temperature regeneration additive, its Disclosed is a medium temperature regenerative additive composition including a manufacturing method and a circulating asphalt mixture containing the same) a softener, an anti-delamination agent, an adhesive (viscosity control agent), and the like.
등록특허 제10-0975361호(폐아스팔트 콘크리트 및 재생첨가제를 포함하는 아스팔트 콘크리트 조성물)는 고유황 중유를 주요성분으로 하는 에멀전계 재생첨가제를 개시하고, 등록특허 제10-1845383호(고도정제 광유계 아스팔트 재생첨가제 및 이를 이용한 재생아스팔트 콘크리트)는 고도정제 광유계 아스팔트 재생첨가제를 개시하고 있다.Registration Patent No. 10-0975361 (asphalt concrete composition containing waste asphalt concrete and recycled additives) discloses an emulsion-based recycled additive containing high sulfur heavy oil as a main component, and Patent No. 10-1845383 (highly refined mineral oil-based Asphalt regeneration additives and reclaimed asphalt concrete using the same) discloses a highly refined mineral oil-based asphalt regeneration additive.
본 발명은 산업폐기물인 폐윤활유, 폐엔진오일, 폐접착제 등을 주 원료로 하는 아스팔트 콘크리트용 재생첨가제 및 이러한 재생첨가제를 이용한 재생 아스팔트 콘크리트 조성물을 제공함에 그 목적이 있다.An object of the present invention is to provide a recycled additive for asphalt concrete using industrial waste such as waste lubricant, waste engine oil, and waste adhesive as a main raw material, and a recycled asphalt concrete composition using such a recycled additive.
본 발명은 「아스팔트 10~30wt%; 폐산업유 60~90wt%; 폐접착제 1~10wt%; 및 분산제 0.2~0.6wt%; 가 교반된 액상 조성물로서, 상기 폐산업유는 폐윤활유 또는 폐엔진오일 중 1종 이상을 수집하여 침전시킨 후 이물질 제거 및 필터링 처리 과정을 거친 것이고, 상기 폐접착제는 폴리비닐부티랄 레진(Poly vinyl butyral resin) 계열로서, 접합안전유리의 중간막 접착제로 사용된 후 폐기 과정에서 레진(resin) 외의 이물질을 제거한 후 분쇄한 것이고, 상기 분산제는 지방산 계열로서 스테아린산, 팔미트산, 올레산, 라우르산 중 어느 하나 이상인 것을 특징으로 하는 폐유를 활용한 아스팔트 콘크리트용 재생첨가제」를 제공한다.The present invention is "asphalt 10 ~ 30wt%; 60~90wt% of waste industrial oil; 1-10wt% of waste adhesive; And 0.2 to 0.6 wt% of a dispersant; Is a stirred liquid composition, wherein the waste industrial oil collects and precipitates at least one of waste lubricating oil or waste engine oil, and then undergoes a process of removing foreign substances and filtering, and the waste adhesive is polyvinyl butyral resin (Poly vinyl butyral resin), which is used as an interlayer adhesive for laminated safety glass, and then pulverized after removing foreign substances other than resin during the disposal process.The dispersant is a fatty acid series, among stearic acid, palmitic acid, oleic acid, and lauric acid. It provides a "regeneration additive for asphalt concrete using waste oil, characterized in that any one or more".
상기 교반은, 상기 폐윤활유와 폐엔진오일의 상온 교반 과정, 상기 폐접착제 첨가 후 160~180℃ 조건의 고온 교반 과정 및 상기 분산제 첨가 후 75~85℃ 조건의 저온 숙성 교반 과정을 순차적으로 실시하는 방법으로 진행하는 것이 바람직하다.The agitation is performed by sequentially performing a stirring process at room temperature of the waste lubricant and waste engine oil, a high temperature stirring process at 160 to 180°C after the addition of the waste adhesive, and a low temperature aging stirring process at 75 to 85°C after adding the dispersant. It is preferable to proceed with the method.
또한 본 발명은 「직경 5~13㎜ 신규 굵은골재 25~30중량부; 직경 5㎜ 이하 신규 잔골재 30~45중량부; 폐아스콘 순환골재 25~50중량부; 채움재 1~2중량부; 아스팔트 4.5~6.0중량부; 및 상기 재생첨가제가 혼합된 조성물로서, 상기 재생첨가제는 상기 아스팔트의 2~10wt% 첨가된 것을 특징으로 하는 재생 아스팔트 콘크리트 조성물」을 함께 제공한다.In addition, the present invention "diameter 5 to 13 mm new coarse aggregate 25 to 30 parts by weight; 30 to 45 parts by weight of a new fine aggregate with a diameter of 5 mm or less; 25-50 parts by weight of waste ascon recycled aggregate; 1 to 2 parts by weight of a filling material; 4.5 to 6.0 parts by weight of asphalt; And a composition in which the regeneration additive is mixed, wherein the regeneration additive is added in an amount of 2 to 10 wt% of the asphalt."
상기 혼합은, 상기 신규 굵은골재 및 신규 잔골재는 160~200℃로 가열하고 상기 폐아스콘 순환골재는 150~160℃로 가열하여 상기 채움재와 함께 혼합한 골재 혼합체와, 상기 아스팔트에 상기 재생첨가제를 혼합한 바인더 혼합체를 각각 계량하여 믹싱하는 방법으로 진행하는 것이 바람직하다.In the mixing, the new coarse aggregate and the new fine aggregate are heated to 160 to 200°C, and the waste ascon recycled aggregate is heated to 150 to 160°C, and the aggregate mixture mixed with the filling material and the regeneration additive are mixed with the asphalt. It is preferable to proceed with a method of weighing and mixing one binder mixture.
본 발명에 따르면 폐윤활유, 폐엔진오일 등의 폐자원을 주 원료로 한 재생첨가제를 통해 순환골재에 피복되어 있는 폐아스팔트의 물성을 일반 아스팔트와 유사하게 복원 가능하며, 상기 재생첨가제를 적용함에 따라 폐아스콘 순환골재를 이용한 아스팔트 콘크리트의 물성(안정도, 흐름값, 간접인장강도 등)이 기준에 적합하도록 발현된다.According to the present invention, it is possible to restore the properties of the waste asphalt coated on the recycled aggregate similar to that of ordinary asphalt through a recycling additive made from waste resources such as waste lubricant and waste engine oil as the main raw material, and by applying the recycling additive. The physical properties (stability, flow value, indirect tensile strength, etc.) of asphalt concrete using waste ascon recycled aggregate are expressed to meet the standard.
본 발명은 「아스팔트 10~30wt%; 폐산업유 60~90wt%; 폐접착제 1~10wt%; 및 분산제 0.2~0.6wt%; 가 교반된 액상 조성물로서, 상기 폐산업유는 폐윤활유 또는 폐엔진오일 중 1종 이상을 수집하여 침전시킨 후 이물질 제거 및 필터링 처리 과정을 거친 것이고, 상기 폐접착제는 폴리비닐부티랄(Poly vinyl butyral) 계열로서, 접합안전유리의 중간막 접착제로 사용된 후 폐기 과정에서 레진(resin) 외의 이물질을 제거한 후 분쇄한 것이고, 상기 분산제는 지방산 계열로서 스테아린산, 팔미트산, 올레산, 라우르산 중 어느 하나 이상인 것을 특징으로 하는 폐유를 활용한 아스팔트 콘크리트용 재생첨가제」를 제공한다.The present invention is "asphalt 10 ~ 30wt%; 60~90wt% of waste industrial oil; 1-10wt% of waste adhesive; And 0.2 to 0.6 wt% of a dispersant; Is a stirred liquid composition, wherein the waste industrial oil collects and precipitates at least one of waste lubricating oil or waste engine oil, and then undergoes a foreign substance removal and filtering process, and the waste adhesive is polyvinyl butyral ) Series, which is used as an interlayer adhesive of laminated safety glass and then pulverized after removing foreign substances other than resin in the disposal process, and the dispersant is a fatty acid series, one of stearic acid, palmitic acid, oleic acid, and lauric acid. It provides a recycling additive for asphalt concrete using waste oil characterized by the above.
본 발명이 제공하는 재생첨가제(이하, '본 발명 재생첨가제')에는 아스팔트가 10~30wt% 포함된다. 상기 아스팔트는 폐아스콘 순환골재를 이용한 아스팔트 콘크리트(이하 '재생 아스콘')의 점도 및 침입도 확보를 위해 적용된다.The regeneration additive provided by the present invention (hereinafter,'the regeneration additive of the present invention') contains 10 to 30 wt% of asphalt. The asphalt is applied to secure the viscosity and penetration of asphalt concrete (hereinafter referred to as'regenerated ascon') using waste ascon recycled aggregate.
상기 폐산업유는 폐아스콘 순환골재에 피복되어 있는 폐아스팔트의 물성 회복을 위한 재생첨가제의 주요 성분으로서, 폐윤활유 또는 폐엔진오일 중 1종 이상을 수집하여 침전시킨 후 이물질 제거 및 필터링 처리 과정을 거쳐 정제된 것을 적용한다. 본 발명 재생첨가제에는 상기 폐산업유가 60~90wt% 포함된다. 상기 폐윤활유를 10~60wt% 범위에서 사용하고, 상기 폐엔진오일을 10~60wt% 범위에서 사용함으로써 상기 폐산업유의 사용량을 전체적으로 60~90wt% 범위로 맞추는 것이 바람직하다. The waste industrial oil is a major component of a regenerative additive for recovering the properties of waste asphalt coated on the waste ascon recycled aggregate.After collecting and precipitating at least one of waste lubricant or waste engine oil, the process of removing foreign matter and filtering is performed. And apply the purified one. The recycled additive of the present invention contains 60 to 90wt% of the waste industrial oil. By using the waste lubricating oil in the range of 10 to 60 wt%, and using the waste engine oil in the range of 10 to 60 wt%, it is preferable to adjust the amount of the waste industrial oil in the total range of 60 to 90 wt%.
상기 폐접착제는 아스팔트 콘크리트의 연성 및 인장 성능을 높이기 위한 폴리비닐부티랄 레진(Poly vinyl butyral resin) 계열 첨가제로써, 본 발명 재생첨가제에는 상기 폐접착제가 1~10wt% 포함된다. 상기 폐접착제는 접합안전유리의 중간막 접착제로 사용된 후 폐기 과정에서 레진(resin) 외의 이물질을 제거한 후 분쇄한 것을 적용할 수 있다.The waste adhesive is a polyvinyl butyral resin-based additive for improving the ductility and tensile performance of asphalt concrete, and the recycled additive of the present invention contains 1 to 10 wt% of the waste adhesive. The waste adhesive may be used as an interlayer adhesive for laminated safety glass, and then pulverized after removing foreign substances other than resin in the disposal process may be applied.
상기 분산제는 상기 폐접착제의 원활한 교반을 위한 지방산 계열 첨가제로서, 본 발명 재생첨가제에는 상기 분산제가 0.2~0.6wt% 포함된다. 상기 아스팔트 및 폐산업유는 상온(15~25℃)에서 단순 물리 교반으로도 원활하게 혼합되나, 상기 폐접착제는 상온에서 반고체의 특성을 가지기 때문에 고온으로 용융시켜 혼합을 해야하고, 용융 후에도 겔 형상으로 침전될 가능성이 높기 때문에 상기 분산제 첨가 후 저온 숙성 교반이 필요하다. 상기 분산제로는 스테아린산, 팔미트산, 올레산, 라우르산 중 어느 하나 이상을 적용할 수 있다.The dispersant is a fatty acid-based additive for smooth stirring of the waste adhesive, and the regeneration additive of the present invention contains 0.2 to 0.6 wt% of the dispersant. The asphalt and waste industrial oil are smoothly mixed even with simple physical agitation at room temperature (15~25℃), but since the waste adhesive has a semi-solid characteristic at room temperature, it must be melted and mixed at a high temperature. Since the possibility of precipitation is high, low-temperature aging stirring is required after the dispersant is added. Any one or more of stearic acid, palmitic acid, oleic acid, and lauric acid may be used as the dispersant.
전술한 바와 같이 본 발명 재생첨가제는 아스팔트, 폐산업유, 폐접착제 및 분산제가 균질하게 교반된 액상 조성물이다. 다만, 본 발명 재생첨가제의 균질성은 교반 방식에 의해 확보될 수 있다.As described above, the regeneration additive of the present invention is a liquid composition in which asphalt, waste industrial oil, waste adhesive and dispersant are homogeneously stirred. However, the homogeneity of the regeneration additive of the present invention can be ensured by a stirring method.
본 발명 재생첨가제의 원료별 교반은 상기 아스팔트와 폐산업유의 상온(15~25℃) 교반 과정, 상기 폐접착제 첨가 후 160~180℃ 조건의 고온 교반 과정 및 상기 분산제 첨가 후 75~85℃ 조건의 저온 숙성 교반 과정의 순차적 진행으로 시행하는 것이 바람직하다. 상기 고온 교반 과정을 1시간 수행하는 경우, 상기 저온 숙성 교반 과정은 2시간 동안 충분히 진행하는 것이 바람직하다.Stirring for each raw material of the recycled additive of the present invention is carried out at room temperature (15~25℃) stirring process of the asphalt and waste industrial oil, a high temperature stirring process at 160~180℃ after adding the waste adhesive, and 75~85℃ after adding the dispersant. It is preferable to carry out sequentially in the low-temperature aging stirring process. When the high-temperature stirring process is performed for 1 hour, the low-temperature aging stirring process is preferably sufficiently performed for 2 hours.
또한 본 발명은 「직경 5~13㎜ 신규 굵은골재 25~30중량부; 직경 5㎜ 이하 신규 잔골재 30~45중량부; 폐아스콘 순환골재 25~50중량부; 채움재 1~2중량부; 아스팔트 4.5~6.0중량부; 및 상기 재생첨가제가 상기 아스팔트의 2~10wt% 첨가된 것을 특징으로 하는 재생 아스팔트 콘크리트 조성물」을 함께 제공한다.In addition, the present invention "diameter 5 to 13 mm new coarse aggregate 25 to 30 parts by weight; 30 to 45 parts by weight of a new fine aggregate with a diameter of 5 mm or less; 25-50 parts by weight of waste ascon recycled aggregate; 1 to 2 parts by weight of a filling material; 4.5 to 6.0 parts by weight of asphalt; And a recycled asphalt concrete composition, characterized in that the recycled additive is added in an amount of 2 to 10% by weight of the asphalt.
건설폐기물의 재활용촉진에 관한 법률 시행령(대통령령 제28583호) 제3조의2 제1호에 따라 "아스팔트콘크리트 제조용 순환골재를 25퍼센트 이상 사용한 제품"은 순환골재 재활용 제품 즉, 순환 아스팔트 콘크리트 제품으로 인정된다.In accordance with Article 3-2 No. 1 of the Enforcement Decree of the Construction Waste Recycling Promotion Act (Presidential Decree No. 28583), “Products that use 25% or more of recycled aggregate for manufacturing asphalt concrete” are recognized as recycled aggregate products, that is, recycled asphalt concrete products. do.
본 발명이 제공하는 재생 아스팔트 콘크리트(이하, '본 발명 재생 아스콘')에 사용되는 골재는 직경 5~13㎜ 신규 굵은골재 25~30중량부, 직경 5㎜ 이하 신규 잔골재 30~45중량부 및 폐아스콘 순환골재(굵은골재와 잔골재 혼재) 25~50중량부를 포함하므로 골재 내의 폐아스콘 순환골재 사용량은 25wt% 이상이 되어, 상기 건설폐기물의 재활용촉진에 관한 법률 시행령상의 순환골재 재활용 제품으로 인정될 수 있다.The aggregate used in the recycled asphalt concrete (hereinafter referred to as'the recycled asphalt concrete of the present invention') provided by the present invention is 25 to 30 parts by weight of a new coarse aggregate with a diameter of 5 to 13 mm, 30 to 45 parts by weight of a new fine aggregate with a diameter of 5 mm or less, and waste Since it contains 25 to 50 parts by weight of recycled ascon aggregate (coarse aggregate and fine aggregate), the amount of recycled ascon aggregate in the aggregate is 25wt% or more, and it can be recognized as a recycled aggregate recycling product under the Enforcement Decree of the Act on Promotion of Recycling of Construction Waste. have.
본 발명 재생 아스콘에는 상기 골재(신규 굵은골재, 신규 잔골재 및 폐아스콘 순환골재) 외에도 채움재 1~2중량부, 아스팔트 4.5~6.0중량부가 혼합되며, 본 발명 재생첨가제가 상기 아스팔트의 2~10wt% 첨가·혼합된다. In addition to the aggregates (new coarse aggregates, new fine aggregates and waste ascon recycled aggregates), 1 to 2 parts by weight of a filler and 4.5 to 6.0 parts by weight of asphalt are mixed in the recycled ascon of the present invention, and 2 to 10 wt% of the asphalt is added. ·Mixed.
전술한 바와 같이 본 발명 재생첨가제는 상기 폐아스콘 순환골재에 피복되어 있는 폐아스팔트의 저하된 물성을 복원하기 위한 것으로서, 본 발명 재생 아스콘의 각 원료 혼합과정에서 상기 폐아스콘 순환골재에 피복되어 있는 폐아스팔트의 물성이 복원된다. 이에 따라 본 발명 재생 아스콘의 구성 원료로 직접 혼합되는 아스팔트 외에도 본 발명 재생첨가제에 포함되어 있는 아스팔트 및 상기 폐아스콘 굵은골재에 피복되어 있다가 상기 재생첨가제에 의해 물성이 회복되는 폐아스팔트 모두 골재에 대한 바인더 역할을 수행한다. 상기 채움재는 돌가루, 소석회 등을 적용할 수 있으며, 재생 아스콘 매트릭스 내의 공극에 충전되어 원료(골재와 아스팔트) 간의 부착력 강화, 수분저항성 향상, 점도 감소 등에 기여한다.As described above, the recycled additive of the present invention is for restoring the deteriorated physical properties of the waste asphalt coated on the recycled ascon aggregate, and the waste coated on the recycled ascon aggregate in the process of mixing each raw material of the recycled ascon of the present invention The properties of asphalt are restored. Accordingly, in addition to the asphalt that is directly mixed as a constituent material of the recycled ascon of the present invention, the asphalt contained in the recycled additive of the present invention and the waste asphalt that is coated on the coarse waste ascon aggregate and recovered by the recycled additive are all It acts as a binder. The filling material may be stone powder, slaked lime, etc., and it is filled in the voids in the recycled ascon matrix to enhance adhesion between raw materials (aggregate and asphalt), improve moisture resistance, and reduce viscosity.
본 발명 재생 아스콘의 원료 혼합은, 상기 신규 굵은골재 및 신규 잔골재를 160~200℃로 가열하고 상기 폐아스콘 순환골재를 150~160℃로 가열하여 상기 채움재와 함께 혼합함으로써 골재 혼합체를 구성하고, 상기 아스팔트에 상기 재생첨가제를 혼합한 바인더 혼합체를 구성하여, 상기 골재 혼합체와 상기 바인더 혼합체를 각각 계량, 믹싱하는 과정으로 진행한다.In the mixing of raw materials of the recycled ascon of the present invention, the new coarse aggregate and the new fine aggregate are heated to 160 to 200°C, and the waste ascon recycled aggregate is heated to 150 to 160°C and mixed together with the filling material to form an aggregate mixture, and the A binder mixture in which the recycled additive is mixed with asphalt is formed, and the aggregate mixture and the binder mixture are measured and mixed, respectively.
이하에서는 본 발명 재생첨가제 및 재생 아스콘에 관한 구체적인 시험 결과를 설명한다.Hereinafter, specific test results of the regenerated additive and regenerated ascon of the present invention will be described.
폐아스콘에서 추출한 폐아스팔트와 일반 아스팔트의 기초 물성 시험 결과는 아래 [표 1]과 같다. 폐아스팔트는 일반 아스팔트에 비해 침입도가 저하되고(73→29), 점도가 높아지며(385cSt→672cSt), 연화점이 높아진 상태(42℃→78℃)를 알 수 있다.[Table 1] shows the basic physical property test results of waste asphalt and general asphalt extracted from waste ascon. Compared to general asphalt, waste asphalt has a lower penetration (73→29), higher viscosity (385cSt→672cSt), and an increased softening point (42℃→78℃).
아래 [표 2]는 상기 폐아스팔트에 본 발명 재생첨가제를 8wt% 혼합한 후의 물성 시험 결과를 나타낸 것이다. 침입도, 점도 및 연화점이 모두 일반 아스팔트에 가깝게 회복된 상태를 확인할 수 있다.[Table 2] below shows the results of a physical property test after 8wt% of the recycled additive of the present invention was mixed with the waste asphalt. Penetration, viscosity, and softening point can all be confirmed to be restored close to that of ordinary asphalt.
아래 [표 3]은 재생첨가제의 조합을 달리하면서 안정도, 간접인장강도, 인장강도비를 시험하기 위한 재생 아스팔트 콘크리트의 기본 배합 조건을 정리한 것이다. 아래 [표 3]의 재생 아스팔트 콘크리트는 골재가 신규 골재(굵은골재, 잔골재 및 채움재 포함) 70중량부 및 폐아스콘 순환골재 30중량부 혼합되어 있으며, 아스팔트는 폐아스콘 순환골재 첨가량에 따라 4.8~5.2중량부 혼합되어 있다. 재생첨가제는 상기 아스팔트 대비 2~10wt% 혼합하였다. [Table 3] below summarizes the basic mixing conditions of recycled asphalt concrete to test stability, indirect tensile strength, and tensile strength ratio with different combinations of recycled additives. In the recycled asphalt concrete of [Table 3] below, 70 parts by weight of new aggregate (including coarse aggregate, fine aggregate and filling material) and 30 parts by weight of waste ascon recycled aggregate are mixed, and asphalt is 4.8~5.2 depending on the amount of recycled asphalt concrete added. It is mixed in parts by weight. Regeneration additives were mixed in 2 to 10 wt% compared to the asphalt.
아래의 [표 4] 와 [표 5]는 [표 3]의 재생 아스팔트 콘크리트에 대하여 재생첨가제(Re)를 구성하는 폐산업유의 조합을 폐엔진오일(WE) 100wt%, 폐윤활유(WL) 100wt%, 폐엔진오일(WE) 50wt%와 폐윤활유(WL) 50wt%의 혼합으로 달리하면서, 안정도 및 간접인장강도 시험 결과를 나타낸 것이다.[Table 4] and [Table 5] below show the combination of waste industrial oil that constitutes the recycled additive (Re) for the recycled asphalt concrete of [Table 3]: 100wt% of waste engine oil (WE) and 100wt% of waste lubricant (WL). %, the results of stability and indirect tensile strength tests are shown while varying by mixing 50wt% of waste engine oil (WE) and 50wt% of waste lubricant (WL).
일반 아스콘 품질 기준 상 안정도 7,500N 이상, 흐름값 20~40이 요구되는데, 아래 [표 4]에 나타난 본 발명에 따른 재생 아스팔트 콘크리트의 모든 시험예에서 상기 안정도 및 흐름값 기준이 충족됨을 확인할 수 있다. It can be seen that the stability and flow value criteria are satisfied in all test examples of the recycled asphalt concrete according to the present invention shown in [Table 4] below. .
또한, 표층용 아스콘의 간접인장강도는 0.8N/㎟ 이상이 요구되는데, 아래 [표 5]에 나타난 본 발명에 따른 재생 아스팔트 콘크리트의 모든 시험예에서 상기 간접인장강도 기준이 충족됨을 확인할 수 있다.In addition, the indirect tensile strength of ascon for the surface layer is required to be 0.8N/mm2 or more, and it can be seen that the indirect tensile strength criterion is satisfied in all test examples of the recycled asphalt concrete according to the present invention shown in [Table 5] below.
아래 [표 6]은 [표 3]의 배합 조건에서 재생첨가제(Re)의 사용량을 아스팔트 대비 8~10wt% 범위에서 변경해 가면서, 재생첨가제(Re)를 구성하는 폐산업유의 조합을 폐엔진오일(WE) 100wt%, 폐윤활유(WL) 100wt%, 폐엔진오일(WE) 50wt%와 폐윤활유(WL) 50wt%의 혼합으로 다르게 해 가면서 기준시료와 동결융해시료 간의 인장강도비를 시험한 결과를 정리한 것이다.[Table 6] below shows the combination of waste industrial oil that constitutes the recycled additive (Re) while changing the amount of recycled additive (Re) in the range of 8 to 10 wt% compared to asphalt under the mixing conditions of [Table 3]. The results of testing the tensile strength ratio between the reference sample and the freeze-thaw sample were different by mixing WE) 100wt%, waste lubricant (WL) 100wt%, waste engine oil (WE) 50wt% and waste lubricant (WL) 50wt%. It is organized.
일반 아스콘 품질 기준 상 기준시료와 동결융해시료 간의 인장강도비는 0.8 이상이 요구되는데, 아래 [표 6]에 나타난 본 발명에 따른 재생 아스팔트 콘크리트의 모든 시험예에서 상기 인장강도비 기준이 충족됨을 확인할 수 있다.According to the general ascon quality standard, the tensile strength ratio between the reference sample and the freeze-thaw sample is required to be 0.8 or more, and it is confirmed that the tensile strength ratio criterion is satisfied in all test examples of recycled asphalt concrete according to the present invention shown in [Table 6] below. I can.
이상에서 본 발명에 대하여 구체적인 실시예와 함께 상세하게 살펴보았다. 그러나 본 발명은 위의 실시예에 의하여 한정되는 것은 아니며 본 발명의 요지를 벗어남이 없는 범위에서 수정 및 변형될 수 있다. 따라서 본 발명의 청구범위는 이와 같은 수정 및 변형을 포함한다.In the above, the present invention was examined in detail together with specific examples. However, the present invention is not limited by the above embodiments, and may be modified and modified within the scope without departing from the gist of the present invention. Accordingly, the claims of the present invention include such modifications and variations.
Claims (4)
상기 폐산업유는 폐윤활유 또는 폐엔진오일 중 1종 이상을 수집하여 침전시킨 후 이물질 제거 및 필터링 처리 과정을 거친 것이고,
상기 폐접착제는 폴리비닐부티랄 레진(Poly vinyl butyral resin) 계열로서, 접합안전유리의 중간막 접착제로 사용된 후 폐기 과정에서 레진(resin) 외의 이물질을 제거한 후 분쇄한 것이고,
상기 분산제는 지방산 계열로서 스테아린산, 팔미트산, 올레산, 라우르산 중 어느 하나 이상인 것을 특징으로 하는 폐유를 활용한 아스팔트 콘크리트용 재생첨가제.
Asphalt 10-30wt%; 60~90wt% of waste industrial oil; 1-10wt% of waste adhesive; And 0.2 to 0.6 wt% of a dispersant; As a stirred liquid composition,
The waste industrial oil is collected and precipitated at least one of waste lubricating oil or waste engine oil, and then subjected to a process of removing foreign substances and filtering,
The waste adhesive is a polyvinyl butyral resin series, used as an interlayer adhesive for laminated safety glass, and then pulverized after removing foreign substances other than resin in the disposal process,
The dispersant is a fatty acid-based regeneration additive for asphalt concrete using at least one of stearic acid, palmitic acid, oleic acid, and lauric acid.
상기 아스팔트와 폐산업유의 상온 교반 과정,
상기 폐접착제 첨가 후 160~180℃ 조건의 고온 교반 과정 및
상기 분산제 첨가 후 75~85℃ 조건의 저온 숙성 교반 과정을 순차적으로 실시한 것을 특징으로 하는 폐유를 활용한 아스팔트 콘크리트용 재생첨가제.
In claim 1, the stirring,
Room temperature stirring process of the asphalt and waste industrial oil,
After the waste adhesive is added, a high-temperature stirring process at 160 to 180°C and
A regeneration additive for asphalt concrete using waste oil, characterized in that after adding the dispersant, a low-temperature aging stirring process under conditions of 75 to 85°C is sequentially performed.
상기 재생첨가제는 상기 아스팔트의 2~10wt% 첨가된 것을 특징으로 하는 재생 아스팔트 콘크리트 조성물.
25 to 30 parts by weight of a new coarse aggregate of 5 to 13 mm in diameter; 30 to 45 parts by weight of a new fine aggregate with a diameter of 5 mm or less; 25-50 parts by weight of waste ascon recycled aggregate; 1 to 2 parts by weight of a filling material; 4.5 to 6.0 parts by weight of asphalt; And as a composition in which the regeneration additive of claim 1 or 2 is mixed,
The recycled asphalt concrete composition, characterized in that the recycled additive is added 2 ~ 10wt% of the asphalt.
상기 신규 굵은골재 및 신규 잔골재는 160~200℃로 가열하고 상기 폐아스콘 순환골재는 150~160℃로 가열하여 상기 채움재와 함께 혼합한 골재 혼합체와,
상기 아스팔트에 상기 재생첨가제를 혼합한 바인더 혼합체를 각각 계량하여 믹싱한 것을 특징으로 하는 재생 아스팔트 콘크리트 조성물.In claim 3, wherein the mixing,
The new coarse aggregate and the new fine aggregate are heated to 160 to 200°C, and the waste ascon recycled aggregate is heated to 150 to 160°C and mixed with the filling material,
Recycled asphalt concrete composition, characterized in that the mixture of the binder mixture mixed with the recycled additive to the asphalt by weighing each.
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