KR20110026038A - Temperature-controlled modified recycling mixes for reuse of 100% rap in road pavements and manufacturing methods thereof - Google Patents
Temperature-controlled modified recycling mixes for reuse of 100% rap in road pavements and manufacturing methods thereof Download PDFInfo
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- KR20110026038A KR20110026038A KR20090083749A KR20090083749A KR20110026038A KR 20110026038 A KR20110026038 A KR 20110026038A KR 20090083749 A KR20090083749 A KR 20090083749A KR 20090083749 A KR20090083749 A KR 20090083749A KR 20110026038 A KR20110026038 A KR 20110026038A
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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
- E01C7/182—Aggregate or filler materials, except those according to E01C7/26
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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
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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
- C04B24/08—Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
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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
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- 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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- 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
일반적으로 아스콘은 아스팔트바인더와 굵은 골재, 잔골재 및 채움재 (석회석 분말)를 가열 혼합한 것으로 각종 도로나 주차장의 포장건설에 널리 사용되고 있다. 이러한 아스팔트포장은 공용 중에 포장표면의 아스팔트바인더가 공기 중의 산소와 서서히 반응하여 차츰 본래의 유연성을 상실하고 점점 딱딱해진다. 이러한 현상을 아스팔트포장의 산화노화(oxidative aging)라 부르며, 산화노화가 오랫동안 진행되면 포장표면에 심각한 균열이 발생하고 마침내 포장수명이 종료된다.In general, ascon is a mixture of asphalt binder, coarse aggregate, fine aggregate, and filling material (limestone powder), and is widely used for pavement construction of various roads and parking lots. Such asphalt pavement gradually loses its inherent flexibility as the asphalt binder on the pavement reacts slowly with oxygen in the air during public use. This phenomenon is called oxidative aging of asphalt pavement. If oxidative aging progresses for a long time, serious cracking occurs on the pavement surface and the pavement life is finally terminated.
각종 도로의 아스팔트포장에 공용성 문제(소성변형 혹은 피로균열, 등)가 발생하여 포장을 유지보수 할 때, 도로의 아스팔트포장을 확장할 때, 하수관, 전선 혹은 케이블 매설을 위해 도로포장을 굴착할 때, 혹은 노후 된 도로포장 전체를 재포장할 때 상당량의 폐아스콘이 발생한다. When maintenance of the pavement occurs due to common problems (plastic deformation or fatigue crack, etc.) in the asphalt pavement of various roads, when the asphalt pavement of the road is expanded, when the pavement is excavated for laying sewer pipes, wires or cables As a result, a significant amount of waste ascon is generated when the pavement is repaved.
상기 아스팔트포장은 공기 중에 이미 장시간 노출되어 있었으므로 수거된 폐아스콘 중에는 이미 부분적으로 산화노화 된 아스팔트바인더가 필연적으로 포함되어 있다. 폐아스콘 중의 산화노화 된 아스팔트에 대한 적절한 조치 없이 단순히 신규재료와 혼합하여 재포장하면, 포장한 후 얼마 안 되어 심각한 균열이 발생한다. 따라서 지금까지는 대부분의 폐아스콘을 도로포장건설에 재사용하지 않고 성토나 매립에 주로 사용되어 왔으나, 최근 들어 폐아스콘이 귀중한 자연자원임을 인식하게 되고, 매립으로 인한 자연환경의 오염문제, 계속 발생하는 폐아스콘 양의 증가, 폐기물처리비로 인한 도로건설비용의 증가, 저렴한 폐아스콘 사용으로 인한 재료원가 절감, 등으로 폐아스콘을 도로포장 건설에 재사용하려는 정부정책이 각 나라마다 강력히 추진되고 있다. 이에 따라 민간 사업체도 폐아스콘 재생사업에 활발히 참여하고 있으며, 다소 차이가 있긴 하나 현재까지는 전 세계적으로 거의 동일한 폐아스콘 재활용기술이 적용되고 있다.Since the asphalt pavement has already been exposed to the air for a long time, the collected waste ascone inevitably includes a partially oxidized asphalt binder. If it is simply mixed with new materials and repacked without proper action against oxidized aging asphalt in waste ascon, severe cracking occurs shortly after packing. Therefore, until now, most of the waste ascon has not been reused for road pavement construction, but has been mainly used for filling or reclamation. However, recently, it has been recognized that waste ascon is a valuable natural resource. Government policies to reuse waste ascon for road pavement are being strongly pursued in each country due to the increase in the amount of ascon, the increase of road construction costs due to waste disposal costs, and the reduction of material cost due to the use of cheap waste ascon. As a result, private companies are actively participating in the waste ascon recycling business. Although there are some differences, so far, almost the same waste ascon recycling technology is applied worldwide.
기존의 폐아스콘 재활용기술은 재생포장의 품질저하로 인해 교통량이 적은 한적한 도로에 주로 사용되어 왔으며, 주요도로에 적용할 경우에는 그 사용량이 25% 이하로 제한되어 왔다. 주요도로에 25% 이상 사용하게 되면 폐아스콘 첨가비율이 많은 것으로 정의된다. 제한된 사용량은 여분의 폐아스콘 축적과 이에 대한 폐기물처리비용, 환경오염과 자원낭비 등에 대한 문제해결을 요구하고 있다. 따라서 더욱 많은 폐아스콘 사용을 위한 재활용 기술개발이 절실히 요청된다.The existing waste ascon recycling technology has been mainly used on secluded roads with low traffic volume due to the deterioration of the quality of recycled packaging, and its use has been limited to less than 25% when applied to major roads. If more than 25% is used in the main road, the ratio of waste ascone addition is defined as high. The limited amount of use requires solving the problem of the accumulation of extra asbestos, the waste disposal cost, environmental pollution and waste of resources. Therefore, there is an urgent need for the development of recycling technology for more waste ascon use.
기존의 폐아스콘 재활용기술은 신규재료(신규골재 및 신규아스팔트바인더) 및 오일계 재생첨가제 그리고 폐아스콘을 함께 혼합하여 통상적인 품질을 가진 신규 아스팔트포장의 물성복원에 목표를 두고 있다. 이 때문에 기존의 재생 아스콘 물성은 항상 신규 아스콘물성에 못 미치는 경우가 대부분이다. 주된 이유는 배합설계가 항상 재생 이전의 폐아스콘 상태에 맞추어 진행되지만 실제 재생은 정작 그 이후의 과정에서 행해짐으로 배합설계와는 전혀 맞지 않다. 재생과정에서 가열로 인한 추가적인 폐아스콘의 산화노화에 대한 조치는 전혀 고려되지 않기 때문에 신규아스콘으로의 물성복원이 불가능하며 품질은 나빠질 수밖에 없다. 이러한 이유로 기존의 폐아스콘 재생포장은 피로균열, 소성변형 및 박리현상으로 인한 포트홀 발생 등의 문제로부터 자유롭지 못하다. 따라서 주요도로의 포장 재료로 사용하기에는 부적합하다고 판단하여 아직도 기존의 재활용기술을 기피하는 경향이 강하다.The existing waste ascon recycling technology aims to restore the properties of new asphalt pavement of normal quality by mixing together new materials (new aggregate and new asphalt binder), oil-based regeneration additive, and waste ascon. For this reason, existing recycled ascon properties are often less than new ascon properties. The main reason is that the mixing design always proceeds to the state of the closed ascon before the regeneration, but the actual regeneration takes place in the subsequent process, which does not match the mixing design at all. In the regeneration process, no additional measures for oxidative aging of waste ascon due to heating are taken into account, so the restoration of properties to new ascon is impossible and the quality deteriorates. For this reason, the conventional recycled packaging of waste ascon is not free from problems such as the occurrence of potholes due to fatigue cracking, plastic deformation and delamination. Therefore, it is considered to be unsuitable for use as a paving material on the main road, and there is still a tendency to avoid the existing recycling technology.
일반 신규아스콘 제조공정에서는 신규골재가 드럼건조기(Drum Dryer)에서 160 이상으로 가열되어 혼합기에 투입되고, 신규아스팔트는 이미 170로 가열된 상태에서 액상으로 분사되어 함께 혼합된다. 이에 비하여 폐아스콘은 드럼혼합기에서 상온의 폐 골재와 피복된 아스팔트를 함께 가열하여 빠른 시간 내에 온도를 높여야 함으로, 드럼혼합기의 버너 가열온도는 신규아스콘의 160-200가 아니라 200-350로 더욱 높이는 것이 통상적이다. 이처럼 고온을 유지하려면 연료비용도 상승하고, 탄산가스 발생량도 많아지고, 높은 온도에서의 산화노화(온도가 높을수록 산화노화가 빨리 진행됨)도 급격히 진행되어 재료의 취성도 함께 증가하는 문제를 안고 있다.In the general new ascon manufacturing process, the new aggregate is heated to 160 or more in a drum dryer (Drum Dryer) is introduced into the mixer, and the new asphalt is sprayed into the liquid phase while already heated to 170 and mixed together. On the other hand, the waste ascon should heat the waste aggregate at room temperature and the coated asphalt together in the drum mixer together to raise the temperature within a short time.The burner heating temperature of the drum mixer is higher to 200-350 instead of 160-200 of the new ascon. It is common. To maintain high temperatures, fuel costs increase, carbon dioxide gas generation increases, and oxidation aging at higher temperatures (oxidation aging proceeds more rapidly at higher temperatures) causes the brittleness of materials to increase. .
결론적으로 말하면, 기존의 폐아스콘 재활용기술은 폐아스콘 사용량이 상대적으로 적고, 재생아스콘의 품질(소성변형 및 피로균열 저항성, 포트홀 발생방지)이 우수하지 못하며, 드럼혼합기 내부의 생산온도가 고온이라 산화노화가 크며 유해가스를 다량 발생시킨다는 문제점을 가지고 있어서, 기술력 부족으로 인해 폐아스콘 재활 용에 대한 수요를 충족시키지 못하고 있다.In conclusion, the existing waste ascon recycling technology uses less waste ascon, the quality of recycled ascon is not excellent (plastic deformation and fatigue crack resistance, prevention of pothole generation), and the production temperature inside the drum mixer is oxidized due to high temperature. Aging is large and has a problem of generating a large amount of harmful gas, and due to lack of technology, it is not able to meet the demand for recycled ascon.
재생 아스콘에 대한 선행기술조사는 다음과 같다. 한국 특허 제0317436호에서는 폐아스콘을 재활용할 때 신재에 대한 폐아스콘의 혼입률을 30%~50%로 제한하고 있으며, 재생아스콘의 물성향상을 위해 재생첨가제와 함께 SBR 라텍스(Latex), EVA, SBS, SIS 등과 같은 고분자 개질제, 혹은 최대크기 2의 폐타이어분말, 등을 고온에서 함께 혼합할 것을 제안하고 있다. 상기 방법은 폐아스콘 함량을 신재의 30-50%로 제한하고 있을 뿐만 아니라, 구 아스팔트바인더와 신규 아스팔트바인더의 존재 하에 고분자 개질제의 개질효과도 회석되어 우수한 물성을 기대하기가 어렵다. 또한, 신규 골재와 신규 아스팔트바인더 및 개질첨가제를 재생 아스콘생산 공장이나 생산현장에 운반하기 위해 추가적인 장비와 공정, 운반비용이 요구됨으로 재생공정이 복잡해지고 경제적 이점이 현격히 줄어든다. 또한 높은 생산온도에 대한 문제를 전혀 고려하지 못하고 있다.The prior art research on recycled ascon is as follows. Korean Patent No. 0317436 limits the mixing ratio of waste ascon to 30% to 50% when recycling waste ascon.In addition, SBR latex (Latex), EVA, SBS is added with recycled additives to improve the physical properties of recycled ascon. , Polymer modifiers such as SIS, waste tire powders of maximum size 2, and the like are mixed together at high temperature. The method not only limits the waste ascon content to 30-50% of the new material, it is difficult to expect excellent physical properties because the modification effect of the polymer modifier is also dilute in the presence of the old asphalt binder and the new asphalt binder. In addition, additional equipment, processes, and transport costs are required to transport new aggregates, new asphalt binders and reforming additives to recycled ascon production plants or production sites, which leads to complex regeneration processes and significantly reduced economic benefits. It also does not consider the problem of high production temperatures at all.
한국 특허 등록번호 제0284998호에서는 폐아스콘 사용량을 제한한 가운데 물성향상을 도모하기 위하여 플라이애시 및 유기계 섬유를 이용한 도로포장용 고성능 개질 재생아스팔트 혼합물의 제조방법을 개시하고 있다. 그러나 이러한 시도들도 궁극적으로는 앞서 지적한 바와 같이 폐아스콘 사용량이 적거나, 역학적인 물성이 열악하거나 여러 다른 재료를 혼입하기 위한 추가적인 장비와 공정을 필요로 하는 공통적인 문제점을 안고 있다. 또한 고온의 생산온도에 대한 해결방안도 전혀 없다.Korean Patent Registration No. 0284998 discloses a method for producing a high performance modified recycled asphalt mixture for road pavement using fly ash and organic fibers in order to improve physical properties while limiting the amount of waste ascon. However, these attempts also have common problems, as pointed out earlier, which require less equipment for waste ascon, poor mechanical properties or additional equipment and processes to incorporate different materials. There is also no solution for high production temperatures.
한국 특허 등록번호 제 0781608에는 폐아스콘의 사용량을 100%로 제안하고 있으며, 재생아스콘의 우수한 물성을 확보하기 위해 재생 개질제를 첨가하는 방안을 개시하 고 있어 훨씬 진일보한 기술이라 사료되나, 박리 저항성에 대한 고려와 고온의 생산온도에 대한 해결방안도 전혀 강구하지 못하여, 포트홀 발생방지, 추가적인 산화노화 문제, 온실가스발생과 재생아스콘 생산비용 증가, 등의 문제를 피하기가 어렵다.Korean Patent Registration No. 0781608 proposes the usage of waste ascon at 100%, and discloses a method of adding a regeneration modifier to secure the excellent physical properties of recycled ascon. No consideration is given and no solutions for high temperature production temperatures are available. It is difficult to avoid problems such as prevention of portholes, additional aging problems, increased greenhouse gas emissions and increased production of recycled ascon.
이에 본 발명에서는, 산화노화 된 폐아스콘을 신규아스콘의 품질로 복원하기 위해 폐아스콘에 신규재료(신규골재와 신규아스팔트바인더, 채움재 등)와 재생첨가제를 추가하는 기존의 폐아스콘 재활용기술과는 근본적으로 달리, 신규재료를 전혀 사용하지 않고 폐아스콘 전량을 재생 개질제와 온도조정 첨가제와 혼합하여 온도조정 개질 재생 아스콘을 제조한다. 이렇게 함으로서 폐아스콘 중의 구 아스팔트바인더의 품질을 직접 개선시켜 신규아스콘보다 품질이 더욱 뛰어난 개질 재생아스콘으로 변화시키며, 동시에 온도조정 첨가제의 추가에 의해 재생아스콘의 생산온도와 시공온도를 낮추어 고온에서의 산화노화를 경감하고, 에너지 절약을 이루며, 온실가스 발생량을 줄이고자 한다. 상기 신기술 개발목표를 달성한다면 신재를 전혀 사용하지 않고 폐아스콘만을 전량 사용하는 기술이 가능해진다. 다시 말해서, 기존의 폐아스콘 재활용 기술의 문제점인 폐아스콘 사용량의 제한, 재생아스콘 품질의 열악함, 그리고 고온의 생산과 시공온도에 대한 문제점들을 동시에 해결할 수 있음으로, 상기 신기술개발이 본 발명이 이루고자 하는 기술적 과제이다.Accordingly, in the present invention, in order to restore the oxidized aging waste ascon to the quality of the new ascon, the existing waste ascon recycling technology for adding new materials (new aggregates, new asphalt binders, fillers, etc.) and regeneration additives to the waste ascon is essential. Alternatively, the temperature-modified reformed ascon is produced by mixing the entire amount of waste ascon with the regeneration modifier and the temperature control additive without using any new materials. In this way, the quality of the old asphalt binder in the waste ascon is directly improved, and the modified asbestos is better than the new ascon, and at the same time, the production temperature and the construction temperature of the recycled ascon are reduced by the addition of temperature control additives, thereby oxidizing at high temperatures. We want to reduce aging, save energy and reduce greenhouse gas emissions. If the new technology development goal is achieved, it is possible to use the entirety of waste ascon without using any new materials. In other words, it is possible to solve the problems of the limitation of the waste ascon consumption, the poor quality of recycled ascon, and the problems of the high temperature production and the construction temperature, which are the problems of the existing waste ascon recycling technology, and the development of the new technology is to achieve the present invention. It is a technical problem.
과제해결 수단으로서 본 발명을 구체적으로 살펴보면 다음과 같다. 본 발명은 폐아스콘 100%를 도로포장에 재사용하기 위한 온도조정 개질 재생아스콘의 조성물과 그 제조방법에 관한 것으로, 구체적으로는 최대입자가 53mm 이하의 모든 입자 분포도를 가진 폐아스콘 골재 100 중량부를 (이동식 혹은 배치식 혹은 연속식) 혼합기의 신규 골재투입구에 투입하고, 재생 개질제 0.1-20 중량부와 온도조정 첨가제 0.1-20 중량부를 신규아스팔트 투입위치에서 상기 폐아스콘에 첨가한 후, 5-180 사이의 혼합온도에서 0.5-3분 동안 균일하게 혼합시켜 아스팔트포장의 마모층, 표층, 중간층 및 기층재료로 사용하는 것을 특징으로 하고 있다. 여기서 재생 개질제는 유연제, 탄성체, 점증제, 박리방지제, 무기분말 및 단섬유 중에서 하나 이상으로 구성되어 개질 재생아스콘의 물성을 향상시키고, 중온 첨가제는 수화제, 왁스 및 발포제 중 하나 이상으로 구성되어 개질 재생아스콘의 생산과 시공온도를 낮추는 특성을 지닌다.Looking at the present invention in detail as a means for solving the problem is as follows. The present invention relates to a composition of a temperature-controlled modified recycled ascon for reuse of 100% waste ascone on a road pavement, and to a method for manufacturing the same. Mobile, batch or continuous) mixer is added to the new aggregate inlet, and 0.1-20 parts by weight of the regeneration modifier and 0.1-20 parts by weight of the temperature control additive are added to the waste ascon at the new asphalt input position, and then between 5-180. Mixing uniformly for 0.5-3 minutes at the mixing temperature of the asphalt pavement, characterized in that it is used as a wear layer, surface layer, intermediate layer and base material. Here, the regeneration modifier is composed of at least one of a softener, an elastomer, a thickener, an anti-peeling agent, an inorganic powder, and short fibers to improve the physical properties of the modified reclaimed ascone, and the mesophilic additive is composed of one or more of a hydrating agent, a wax, and a blowing agent to regenerate the regeneration. It has the characteristics to lower the production and construction temperature of ascon.
상기에서 폐아스콘이란 아스팔트도로포장에서 수거한 모든 종류의 폐아스콘을 포함하며, 폐아스콘 덩어리는 분쇄하여 사용하며, 가열 혹은 상온 절삭한 폐아스콘은 분쇄하지 않고 사용할 수 있다. 폐아스콘은 골재분포도를 가지며 최대입자 크기가 55mm 이하의 모든 순환골재를 사용할 수 있다. 바람직하게는 기층은 최대크기가 53mm 이하, 중간층은 최대크기가 38mm 이하, 표층은 최대크기가 26mm 이하, 마모층은 최대크기가 13.2mm 이하인 것을 사용할 수 있다. 폐아스콘 골재분포도는 밀입도 골재분포도, 수퍼팔트 골재분포도, 배수성 골재 분포도, 갭입도 골재분포도, SMA 골재분포도 등 일정한 분포도를 가지는 것이 바람직하나, 필수사항은 아니고 임의의 분포도이더라도 하더라도 사용할 수 있다. 폐아스콘 100%라는 의미는 신재를 사용하지 않고 폐아스콘만 사용한다는 의미이다.The waste ascon includes all kinds of waste ascons collected from the asphalt road pavement, and waste ascon lumps are used by grinding, and waste ascons that have been heated or cut at room temperature can be used without grinding. Waste ascon has aggregate distribution and can use any recycled aggregate with a maximum particle size of 55mm or less. Preferably, the base layer may have a maximum size of 53 mm or less, the middle layer may have a maximum size of 38 mm or less, the surface layer may have a maximum size of 26 mm or less, and the wear layer may have a maximum size of 13.2 mm or less. The waste ascon aggregate distribution chart preferably has a certain distribution such as coarse aggregate distribution, superpallet aggregate distribution, drainage aggregate distribution, gap granularity aggregate distribution, SMA aggregate distribution, but it is not essential and can be used even if it is any distribution. 100% waste ascon means that only waste ascon is used without new materials.
재생 개질제의 중량부가 0.1-20인 것은 0.1 이하에서는 개질효과가 없으며, 20 이 상에서는 점도가 너무 커서 재생아스콘의 생산과 시공이 어려워진다. 재생 개질제의 조성물은 유연제 0.5-100 중량%, 탄성체 0.5-100 중량%, 점증제 0.5-100 중량%, 박리방지제 0.1-20 중량%, 무기분말과 단섬유 0.5-100 중량% 중에서 일부 혹은 전체 군으로 구성되며, 한 가지 이상의 군으로 구성될 때의 재생 개질제의 구성 비율은 임의이지만, 폐아스콘 100중량부에 대해 전체 재생 개질제의 중량부가 0.1-20 중량부 범위에 속해야 한다.If the weight of the regeneration modifier is 0.1-20, the regeneration modifier does not have a modification effect at 0.1 or less, and the viscosity is too high at 20 or more, making production and construction of regeneration ascon difficult. The composition of the regenerating modifier is part or all of 0.5-100 wt% of the softener, 0.5-100 wt% of the elastomer, 0.5-100 wt% of the thickener, 0.1-20 wt% of the anti-peeling agent, and 0.5-100 wt% of the inorganic powder and short fibers. And the proportion of the regeneration modifier when composed of one or more groups is arbitrary, but the weight part of the total regeneration modifier should be in the range of 0.1-20 parts by weight based on 100 parts by weight of waste ascone.
유연제 군이란 산화노화 되어 딱딱해진 폐아스콘에 유연성을 부여하는 역할을 하며, 비교적 저분자량의 유기화합물로서 상온에서 액상이지만, 고상이라 하더라도 비교적 융점이 낮은 특성을 지닌다. 재생 개질제 중 0.5-100 중량%를 차지하며, 0.5 중량% 이하에서는 유연제의 영향이 거의 없다. 유연제의 예를 들면, 유기산(아딕픽산, 퓨마릭산, 수산, (무수)말레인산, 스테아린산, 올레인산, 팔미틱산, 테레프탈산 또는 라우릭산, 등), 유기산 염, 하이드로카본계 오일, 아로마틱 오일, 지방족 오일, 중유, 각종 재생첨가제, BTX(Benzen Toluene Xylene) 유, 도로포장용 아스팔트바인더, 가소제(DBP(Dibutylphthalate), DOP(Dioctylphthalate), PPA(Polypropyleneadipate), 등), MMA(Methymethacrylate) 액, 불포화 폴리에스테르(Unsaturated Polyester) 액, PU(Polyurethane) 액, 동물성 기름(소기름, 돼지기름, 개기름, 각종 생선기름, 등), 식물성 기름(콩기름, 옥수수기름, 참기름, 들깨기름, 면실유, 피마지기름, 등), 동식물 혼합유, 캐스터 오일, 미네랄 오일, 인산, 전분, 유황, 자동차 및 산업용 폐유와 이들의 혼합물 등을 포함한다.Softener group serves to give flexibility to the oxidized aging hardened ascon, and is a relatively low molecular weight organic compound liquid at room temperature, but has a low melting point even in the solid phase. It accounts for 0.5-100% by weight of the regeneration modifier, and less than 0.5% by weight has little effect of the softener. Examples of softening agents include organic acids (adipic acid, fumaric acid, oxalic acid, (maleic) maleic acid, stearic acid, oleic acid, palmitic acid, terephthalic acid or lauric acid, etc.), organic acid salts, hydrocarbon oils, aromatic oils, aliphatic oils, Heavy oil, various recycled additives, Benzen Toluene Xylene (BTX) oil, asphalt binder for road paving, plasticizer (Dibutylphthalate), DOP (Dioctylphthalate), PPA (Polypropyleneadipate), MMA (Methymethacrylate) liquid, unsaturated polyester (Unsaturated) Polyester) liquid, PU (Polyurethane) liquid, animal oil (beef oil, pork oil, dog oil, various fish oils, etc.), vegetable oils (soybean oil, corn oil, sesame oil, perilla oil, cottonseed oil, sesame oil, etc.) Mixed oils, castor oils, mineral oils, phosphoric acid, starch, sulfur, automotive and industrial waste oils and mixtures thereof and the like.
탄성체 군이란 딱딱해진 폐아스콘에 탄성성질을 부여하여, 제조된 개질 재생 아스콘에 각종 균열 (저온균열, 피로균열, 충격균열, 등) 저항성을 부여하는 역할을 한다. 재생 개질제 중 0.5-100 중량%를 차지하며, 0.5 중량% 이하에서는 성능향상이 거의 없다. 즉, 폐아스콘 100 중량부를 기준으로 재생 개질제가 0.1-20 중량부를 차지함으로, 최소 중량부가 0.5%인 것은 폐아스콘 100 중량부 기준으로 재생 개질제는 최대 0.1 중량부의 탄성체를 포함함을 의미하며 이 값은 개질 재생아스콘의 탄성증가에 거의 영향을 미치지 못한다. The elastic group serves to impart elasticity to the hardened waste ascon and to impart resistance to various cracks (low temperature crack, fatigue crack, impact crack, etc.) to the modified reclaimed ascon. It accounts for 0.5-100% by weight of the regeneration modifier, and there is little improvement in performance below 0.5% by weight. That is, since the regeneration modifier occupies 0.1-20 parts by weight based on 100 parts by weight of waste ascon, a minimum weight of 0.5% means that the regeneration modifier comprises an elastic body up to 0.1 parts by weight based on 100 parts by weight of waste ascon. Has little effect on the increase of elasticity of modified recycled ascon.
탄성체 군에 속하는 재료의 예를 들면,Examples of materials belonging to the elastic group,
SBS(Styrene-Butadiene-Styrene), SBR(Styrene-Butadiene Rubber), SEBS(Styrene-Ethylene-Butadiene-Styrene), SIS(Styrene-Isoprene-Styrene),Styrene-Butadiene-Styrene (SBS), Styrene-Butadiene Rubber (SBR), Styrene-Ethylene-Butadiene-Styrene (SEBS), Styrene-Isoprene-Styrene (SIS),
ABR 고무(Acrylobutadiene Rubber) 분말, 폴리클로로프렌 고무(Polychloroprene Rubber) 분말, 부틸 고무(Butyl Rubber) 분말, 생고무(Natural Rubber) 분말, 폐타이어 분말(Crumb Rubber), NBR고무(Nitril Butadiene Rubber) 분말, 이소프렌 고무(Isoprene Rubber)분말, EPDM 고무(Ethylene-Propylene-Diene-Monomer Rubber) 분말, 부타디엔고무(Butadiene Rubber) 분말, 폐 고무분말을 포함하는 탄성체 및 이들의 혼합물 등을 포함한다.Acrylobutadiene Rubber Powder, Polychloroprene Rubber Powder, Butyl Rubber Powder, Natural Rubber Powder, Waste Rubber Powder, NBR Rubber (Nitril Butadiene Rubber) Powder, Isoprene Rubber (Isoprene Rubber) powder, EPDM rubber (Ethylene-Propylene-Diene-Monomer Rubber) powder, butadiene rubber (Butadiene Rubber) powder, elastomer including waste rubber powder and mixtures thereof and the like.
점증제 군이란 온도조정 개질 재생아스콘에 점성성질을 증가시켜, 아스팔트포장의 문제점인 소성변형 저항성을 향상하고자 할 때 첨가한다. 재생 개질제 중 0.5-100 중량%를 차지하며, 0.5 중량% 이하에서는 점성증진 효과가 거의 없다. 점증제 군에 속하는 재료의 예를 들면, 하이덴시티 폴리에틸렌(HDPE), 로우덴시티 폴리에틸렌(LDPE), 리니어 로우덴시티 폴리에틸렌(LLDPE), 폴리프로필렌(PP), 코폴리 프로필렌(CPP), 저분자량 폴리아마이드, 엘바로이(Elvaloy), PVA(Polyvinylacetate), 에틸렌비닐아세테이트(EVA), 폴리뷰텐(PB), 하이임팩트폴리스티렌(HIPS)를 포함하는 모든 열가소성 고분자 및 이들의 혼합물을 포함한다.The thickener group is added to increase the viscosity of the temperature-controlled reforming recycled ascon to improve plastic deformation resistance, which is a problem of asphalt pavement. It accounts for 0.5-100% by weight of the regeneration modifier, and less than 0.5% by weight has little viscous effect. Examples of materials belonging to the thickener group include high density polyethylene (HDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), polypropylene (PP), copolypropylene (CPP), low molecular weight. All thermoplastic polymers including polyamide, Elvaloy, Polyvinylacetate (PVA), ethylenevinylacetate (EVA), polybutene (PB), high impact polystyrene (HIPS) and mixtures thereof.
박리방지제 군이란 온도조정 개질 재생아스콘 포장에서 골재와 아스팔트바인더의 경계면에서의 접착력을 증가시켜 비온 후 수분침투로 인한 재생포장의 포토홀(Pot Hole) 발생을 방지하고자 할 때 첨가한다. 대부분의 개질제는 이중결합이나 카보닐 그룹 (Carbonyl group) 혹은 카복실 산 (Carboxylic acid)을 다소 포함하고 있으며, 이들은 수분과의 친화력이 좋아서 비온 후에는 재료경계면의 박리현상으로 인해서 심각한 포토홀을 경험하고 있다. 박리장지제 군이란 재생 개질제 중 0.1-10 중량%를 차지하며, 0.1 중량% 이하에서는 포트홀 방지효과가 거의 없으며 10 중량% 이상에서는 가격이 비싸 비경제적이다. 포트홀방지를 위한 박리억제제의 예를 들면, 액체 혹은 녹기 쉬한 고체상태의 아민 군으로서, 아닐린(anyline), 1-나프틸 아민(1-naphtylamine), N-사이클로헥실아민 (cyclohexylamine), 디페닐아민(dipheny amine), N-메칠아닐린, 디사이클로헥실아민 (dicyclohexylamine), P-페닐렌디아민(P-phenylene-diamine), 1,3,5-트리아미노벤젠 (1,3,5-triamino-benzene), 에틸렌디아민(ethylene-diamine), 디에틸렌트리아민 (diethylene-triamine), 헥사메틸디아민(hexamethyl-diamine), P-페닐디아민 (P-phenyl-diamine), 피리딘(pyridine), 피롤(pyrrole), 이들 아민 군에 속하는 모든 화합물 및 이들의 혼합물을 포함한다.The anti-peel agent group is added to increase the adhesive force at the interface between the aggregate and the asphalt binder in the temperature-controlled modified ascon pavement to prevent the generation of photo holes in the reclaimed packaging due to water penetration after rain. Most modifiers contain a double bond, a carbonyl group, or some carboxyl acid, which have good affinity with water, and after rain, experience severe photoholes due to delamination of the material interface. have. The release protective agent group occupies 0.1-10% by weight of the regeneration modifier, less than 0.1% by weight of the pothole preventive effect and more than 10% by weight is expensive and uneconomical. Examples of release inhibitors for pothole prevention are liquid or soluble solid amine groups, such as aniline, 1-naphtylamine, N-cyclohexylamine and diphenylamine. (dipheny amine), N-methylaniline, dicyclohexylamine, P-phenylene-diamine, 1,3,5-triaminobenzene (1,3,5-triamino-benzene ), Ethylene-diamine, diethylene-triamine, hexamethyl-diamine, P-phenyl-diamine, pyridine, pyrrole And all compounds belonging to these amine groups and mixtures thereof.
무기분말과 단섬유 군이란 온도조정 개질 재생아스콘의 내구성과 지지력을 증강시킬 필요가 있을 때 첨가한다. 재생 개질제 중 0.5-100 중량%를 차지하며, 0.5 중량% 이하에서는 물성증진 효과가 거의 없다. 무기분말과 단섬유 군에 속하는 재료의 예를 들면, Inorganic powder and short fiber groups are added when it is necessary to enhance the durability and bearing capacity of the temperature-modified modified ascon. It accounts for 0.5-100% by weight of the regeneration modifier, and less than 0.5% by weight has little effect on physical properties. Examples of materials belonging to the inorganic powder and short fiber groups,
무기분말 군으로 경탄, 석회석 분말, 석분, 토너, 실리카, 벤토나이트, 제올라이트, 클레이, 마이카, 카본블랙, 제강 슬래그분말, 고로 슬래그 분말, 각종 시멘트, 플라이 애쉬, 석고, 소석회 및 이들의 혼합물을 포함하며, Inorganic powder groups include hard coal, limestone powder, lime powder, toner, silica, bentonite, zeolite, clay, mica, carbon black, steel slag powder, blast furnace slag powder, various cements, fly ash, gypsum, slaked lime and mixtures thereof ,
단섬유 군으로 나일론 단섬유, 폴리에스테르 단섬유(Polyester Short Fiber), PE 단섬유, PP 단섬유, 카본파이버 단섬유, 셀루로오즈(cellulose) 단섬유, 유리 단섬유, 석면 및 이들의 혼합물을 포함한다.The short fiber group includes nylon short fibers, polyester short fibers, PE short fibers, PP short fibers, carbon fiber short fibers, cellulose short fibers, glass short fibers, asbestos, and mixtures thereof. Include.
온도조정 첨가제란 폐아스콘과 재생 개질제를 혼합할 때 함께 투입하여 혼합온도를 설정하기 위한 첨가제를 말한다. 혼합온도를 낮출수록 가열연료비는 절감되고 환경오염가스 발생도 경감시킬 수 있으나, 재료의 물성과 용도를 고려해야 함으로 원하는 대로 온도를 낮출수는 없다. 온도에 따른 혼합방식을 알아보면 상온혼합(5-40), 반 중온혼합(40-100), 중온혼합(100-150) 그리고 가열혼합(150-180)을 들 수 있다. 온도조정 첨가제를 적절하게 선정함으로서 상기 혼합방법 중 어느 하나를 채택할 수 있다. 온도조정 첨가제의 중량부가 0.1-20인 것은 0.1 이하에서는 온도조정효과가 거의 없으며, 20 이상에서는 점성이 약해지거나 취성이 강해져 소성변형이나 피로균열을 쉽게 발생시킬 수 있음으로 이를 고려한 수치이다. The temperature control additive refers to an additive for setting the mixing temperature by adding together the waste ascon and the regeneration modifier. Lowering the mixing temperature will reduce heating fuel costs and reduce the generation of environmental pollutant gases. However, it is not possible to lower the temperature as desired by considering the material properties and uses. Looking at the mixing method according to the temperature can be a room temperature mixing (5-40), a semi-mid temperature mixing (40-100), a medium temperature mixing (100-150) and heat mixing (150-180). By appropriately selecting the temperature adjusting additive, any of the above mixing methods can be adopted. If the weight part of the temperature adjusting additive is 0.1-20, the temperature adjusting effect is hardly effective at 0.1 or less, and the viscosity is weak or brittle at 20 or more, so plastic deformation and fatigue cracking can be easily generated.
혼합온도란 가열에 의해 폐아스콘이 도달하는 온도이며, 혼합온도가 5-180 인 것은 5 이상에서는 상온혼합을, 180 이하에서는 가열혼합을 고려한 것이다. 5 이하가 되면 상온혼합이라 하더라도 낮은 온도로 인하여 포장건설에 문제가 발생할 수 있으며, 180이상에서는 가열 혼합하는 동안 혼합재료 중의 일부가 열분해함으로 바람직하지 않다. 상기 재료온도범위가 5-180로 넓은 것은 온도조정 첨가제를 달리 사용함으로서 생산방법을 상온혼합(cold mix), 반 중온 혼합(half warm mix), 중온 혼합(warm mix), 가열 혼합(hot mix)으로 변경할 수 있게끔 하기 위함이다. 그리고 혼합시간이 0.5-3분인 것은 0.5분 이하에서는 균일한 혼합을 확보하기 어려우며, 3분 이상에서는 생산이 지연되어 현실성이 적다.The mixing temperature is a temperature at which the waste ascon reaches by heating, and the mixing temperature of 5-180 is considered to be room temperature mixing at 5 or more and heat mixing at 180 or less. If the temperature is less than 5, even if the room temperature mixing may cause problems in the construction of the pavement due to the low temperature, at 180 or more it is not preferable because some of the mixed material is pyrolyzed during the heat mixing. The material temperature range is 5-180 wide, the production method is cold mix, half warm mix, warm mix, hot mix This is to make it changeable. The mixing time of 0.5-3 minutes is difficult to ensure uniform mixing at 0.5 minutes or less, and the production is delayed at 3 minutes or more, so there is little practicality.
혼합온도 조정을 위한 온도조정 첨가제의 조성물은 수화제 0.5-100 중량%, 왁스 0.5-100 중량% 및 발포제 0.5-100 중량% 중에서 일부 혹은 전체 군으로 구성되며, 한 가지 이상의 군으로 구성될 때의 온도조정 첨가제의 구성 비율은 임의이지만, 폐아스콘 100중량부에 대해 전체 온도조정 첨가제의 중량부가 0.1-20 중량부 범위에 속해야 한다.The composition of the thermoregulating additive for adjusting the mixing temperature is composed of some or all of the group consisting of 0.5-100% by weight of the hydrating agent, 0.5-100% by weight of the wax and 0.5-100% by weight of the blowing agent, and the temperature when composed of one or more groups. Although the proportion of the adjusting additive is arbitrary, the weight part of the total temperature adjusting additive should be in the range of 0.1-20 parts by weight based on 100 parts by weight of the waste ascone.
수화제는 상온에서 재생 개질제 중의 무기분말 군과 함께 폐아스콘의 바인더 역할을 할 수 있어서 상온 폐아스콘 100% 재활용에 이용할 수 있다. 또한 100에서 수분이 증발함으로 수화제는 폐아스콘 중의 구 아스팔트를 발포시켜 점도를 떨어뜨리는 발포제 기능도 수행할 수 있어서 반 중온 및 중온혼합을 가능하게 한다. 따라서 수화제는 폐아스콘 100 중량부와 재생 개질제 0.1-20 중량부를 상온혼합, 반 중온혼합 혹은 중온혼합을 하고자 할 때 온도조정 첨가제 0.1-20 중량부의 일부 혹은 단독 구성요소로서 첨가된다. 온도조정 첨가제 중에서 0.5-100 중량%를 차지할 수 있으며, 0.5% 이하에서는 수화제가 온도조정 첨가제로서의 역할을 거의 발휘하지 못한다. The hydrating agent can act as a binder of the waste ascon together with the inorganic powder group in the regeneration modifier at room temperature, and thus can be used for recycling 100% of the waste ascon at room temperature. In addition, as the water evaporates at 100, the hydrating agent may also function as a foaming agent to lower the viscosity by foaming old asphalt in waste ascon, thereby allowing for semi-mid-temperature and mid-temperature mixing. Therefore, the hydrating agent is added as a part or a single component of 100 parts by weight of the waste ascon and 0.1-20 parts by weight of the regeneration modifier when mixing at room temperature, semi-mid-temperature mixing or mid-temperature mixing. It may occupy 0.5-100% by weight of the temperature control additive, and below 0.5%, the hydrating agent hardly plays a role as the temperature control additive.
여기서 수화제 군이란,Here, the hydration group is
물, 수분포함 무기분말 (제올라이트, 벤토나이트, 실리카겔, 클레이, 마이카, 염화칼슘, 등), 수산화 마그네슘, 수산화 칼슘, 수산화 알미늄, 농축 유화제(EVA 유화 아크릴 유화제, 양이온, 음이온, 비이온 유화아스팔트, 등), (음이온, 양이온 및 비이온) 계면활성제, (SBR, NBR, 아이소프렌, 천연고무) 라텍스, CMC(Carboxy-methyl-cellulose) 수용액, PAA(Poly-acryl-amide) 수용액, PEO(Poly-ethylene-oxide) 수용액, PVA(Poly-vinyl-alcohol) 수용액, 폴리비닐아세테이트(Poly-vinyl-acetate) 수용액, 글리콜(Glycol) 수용액 및 이들의 혼합물을 포함하는 것을 특징으로 한다.Water, water-containing inorganic powder (zeolite, bentonite, silica gel, clay, mica, calcium chloride, etc.), magnesium hydroxide, calcium hydroxide, aluminum hydroxide, concentrated emulsifier (EVA emulsified acrylic emulsifier, cation, anion, nonionic emulsified asphalt, etc.) , (Anionic, cationic and nonionic) surfactants, (SBR, NBR, isoprene, natural rubber) latex, CMC (Carboxy-methyl-cellulose) aqueous solution, PAA (Poly-acryl-amide) aqueous solution, PEO (Poly-ethylene) -oxide), polyvinyl-alcohol (PVA) aqueous solution, poly-vinyl acetate (poly-vinyl-acetate) aqueous solution, glycol (Glycol) aqueous solution and mixtures thereof.
왁스는 대부분 융점을 가지고 있으며, 융점이하에서는 고체처럼 딱딱한 물성을 보이다가 융점이상의 온도에서는 점도가 갑자기 낮아지는 특성을 보인다. 이러한 왁스를 재활용공정에서 다른 재료와 혼합하면 왁스의 융점이상에서 타 재료의 점도를 갑자기 떨어뜨려 재생아스콘생산과 시공온도를 낮추는 기능을 한다. 왁스는 폐아스콘 100 중량부와 재생 개질제 0.1-20 중량부를 반 중온혼합, 혹은 중온혼합을 하고자 할 때 온도조정 첨가제 0.1-20 중량부의 일부 혹은 단독 구성요소로 첨가된다. 온도조정 첨가제 중에서 0.5-100 중량%를 차지할 수 있으며, 0.5% 이하에서는 왁스가 온도조정 첨가제로서의 기능을 거의 하지 못한다.Most waxes have a melting point, and under the melting point, the wax shows a hard physical property, but at a temperature above the melting point, the viscosity suddenly decreases. When the wax is mixed with other materials in the recycling process, the wax suddenly drops the viscosity of other materials above the melting point of the wax to reduce the production of recycled ascon and the construction temperature. The wax is added as a part or a single component of 100 parts by weight of waste ascon and 0.1-20 parts by weight of regeneration modifier in the case of half-temperature mixing or 0.1-20 parts by weight of the temperature adjusting additive. It can account for 0.5-100% by weight of the temperature control additive, and below 0.5% the wax hardly functions as a temperature control additive.
여기서 왁스 군이란,Wax group here
파라핀 왁스, 마이크로 크리스탈린 왁스, 몬탄 왁스, 새솔 왁스, 카나우바 왁스, PE-왁스, EVA-왁스, PP-왁스, 경화 피마자유, 하이드록시 스테아린산(Hydroxy Stearic Acid), 지방족 석유수지, 방향족 석유수지, 지방족과 방향족이 공존하는 석유수지, 1,2-하이드록시 스테아린산, 라우린산 아미드, 비스 아마이드 왁스(에틸렌 비스 스테라미드; Ethylene-Bis-Stearamide), 스테아린산 아미드, 오레인산 아미드, 에르카산 아미드, N-오레일 스테아린산 아미드, N-스테아릴 스테아린산 아미드, N-스테아릴 에르카산 아미드, 디-헵탄 데실 케톤(스테아론: CH3(CH2)16-CO-(CH2)16CH3), 소나무 타르, 송진, 송진염 및 이들의 혼합물을 포함하는 것을 특징으로 한다.Paraffin Wax, Micro Crystalline Wax, Montan Wax, Sasol Wax, Carnauba Wax, PE-Wax, EVA-Wax, PP-Wax, Cured Castor Oil, Hydroxy Stearic Acid, Aliphatic Petroleum Resin, Aromatic Petroleum Resin Aliphatic and aromatic petroleum resins, 1,2-hydroxy stearic acid, lauric acid amide, bisamide wax (ethylene bis steramid; Ethylene-Bis-Stearamide), stearic acid amide, oleic acid amide, and erucic acid amide , N-oleyl stearic acid amide, N-stearyl stearic acid amide, N-stearyl ercarboxylic acid amide, di-heptane decyl ketone (stearon: CH 3 (CH 2 ) 16 -CO- (CH 2 ) 16 CH 3 ) , Pine tar, rosin, rosin salts and mixtures thereof.
아스팔트포장에 사용하기 위한 발포제의 발포온도는 적어도 50-140 범위에 있어야 한다. 발포온도가 50-100인 발포제는 반 중온혼합에, 100-140인 발포제는 중온혼합에 사용할 수 있다. 물론 수화제도 100에서 수분이 증발함으로 수분을 매개로 한 발포제라 할 수 있다. 발포제는 폐아스콘 중의 구 아스팔트 혹은 재생 개질제를 발포시켜 다수의 미세기공을 만드는 역할을 한다. 이러한 미세기공은 혼합물의 점도를 떨어뜨려 생산과 시공온도를 낮추는 기능을 한다. 상기 발포제는 폐아스콘 100 중량부와 재생 개질제 0.1-20 중량부를 반 중온혼합, 혹은 중온혼합을 하고자 할 때 온도조정 첨가제 0.1-20 중량부의 일부 혹은 단독 구성요소로서 첨가된다. 발포제는 온도조정 첨가제 중에서 0.5-100 중량%를 차지할 수 있으며, 0.5% 이하에서는 발포제가 온도조정 첨가제로서의 기능을 발휘하지 못한다.The foaming temperature of the blowing agent for use in asphalt paving should be in the range of at least 50-140. A blowing agent with a foaming temperature of 50-100 can be used for semi-cold mixing, and a blowing agent for 100-140 can be used for mixing in medium temperature. Of course, the hydrating agent can also be called a water-borne foaming agent by evaporating the moisture at 100. The blowing agent serves to form a plurality of micropores by foaming old asphalt or regeneration modifier in waste ascon. These micropores function to lower the viscosity of the mixture to lower production and construction temperatures. The blowing agent is added as a part or a single component of 100 parts by weight of the waste ascon and 0.1-20 parts by weight of the regeneration modifier in the case of half-temperature mixing or 0.1-20 parts by weight of the temperature adjusting additive. The blowing agent may account for 0.5-100% by weight of the temperature regulating additive, and at 0.5% or less, the blowing agent does not function as a temperature regulating additive.
여기서 발포제 군이란,Here, the group of blowing agents,
아조디카본아마이드(Azo-dicarbon-amide), 변성 아조디카본아마이드 (Modified azo-dicarbon-amide), Azo-bis-isobutyro-nitrile[(AZDN)(CH3)2(CN)C-N=N-C(CN)(CH3)2], N'-Dimethy-N, N' -dinitroso-terephthalamide (NTA), [(C6H4)-[Con(CH3)-NO]2], 소디움 바이카보네이트(Sodium bicarbonate), 암모니움 바이카보네이트 (Ammonium bicarbonate) 및 이들의 혼합물을 포함하는 것을 특징으로 한다.Azo-dicarbon-amide, Modified azo-dicarbon-amide, Azo-bis-isobutyro-nitrile [(AZDN) (CH3) 2 (CN) CN = NC (CN) (CH3) 2], N'-Dimethy-N, N'-dinitroso-terephthalamide (NTA), [(C6H4)-[Con (CH3) -NO] 2], sodium bicarbonate, ammonium bi It is characterized in that it comprises a carbonate (Ammonium bicarbonate) and mixtures thereof.
온도조정 개질 재생아스콘의 제조방법으로는 플랜트 재생방식(Central Recycling Plant) 혹은 현장 재생방식(In-Place Recycling)이 있으며, 플랜트 재생방식은 연속식 드럼믹스방식과 배치타입 혼합방식이 있으며, 현장 재생방식은 가열밀링에 의한 가열혼합 방법, 상온밀링에 의한 상온혼합방법과 상온밀링에 의한 가열혼합방법이 있으며, 이 중 하나를 택하여 온도조정 개질 재생아스콘을 제조할 수 있다.There are two methods for manufacturing temperature-controlled reclaimed ascon: plant recycling or in-place recycling. Plant recycling includes continuous drum mixing and batch mixing. Methods include a heat mixing method by heat milling, a room temperature mixing method by room temperature milling, and a heat mixing method by room temperature milling, and one of them may be used to produce a temperature-controlled reformed ascon.
플랜트 재생방식으로서의 연속식 드럼믹스방법은 기존의 신규와 폐 재료를 함께 혼합하는 드럼믹서장비를 개조하여, 신규골재 투입구에 신규골재 대신에 크기별로 상온 빈(cold bins)에서 계량하여 이송된 폐아스콘 골재를 투입한다. 재생 개질제와 온도조정 첨가제는 기존의 연속식 드럼믹스장비의 아스팔트바인더의 분사위치에 아스팔트바인더 대신에 압출스크류 방식이나 다른 적절한 투입장비로 투입하도록 할 수 있으며, 기존의 폐아스콘 투입구는 사용하지 않는 특징을 가진다.The continuous drum mixing method as a plant regeneration method is a modified drum mixer that mixes old and new waste materials together, and waste ascon weighed and transferred from cold bins by size instead of new aggregates at new aggregate inlets. Inject aggregate. Regeneration modifiers and temperature control additives can be added to the injection position of the asphalt binder of conventional continuous drum mixing equipment by extrusion screw method or other suitable feeding equipment instead of the asphalt binder. Has
플랜트 재생방식으로서의 배치식 혼합방식은 신규골재를 위한 전체 드럼믹스 라인이 제거되고 배치당 용량이 2톤 이상인 폐아스콘골재 드럼믹스라인만을 사용하도록 개조된다. 폐아스콘골재는 상온 빈(cold bins)에서 각 사이즈별로 계량하여 벨트로 이송되어 폐아스콘 드럼믹스로 투입되며, 드럼믹스를 거친 가열된 재료는 채를 거치지 않고 하나의 핫빈(a hot bin)에 적재된다. 핫빈에 저장된 재료는 각 배치마다 적정 함량이 계량되어 퍼그밀 혼합기에 투입되고, 이와 동시에 적정량의 재생 개질제와 온도조정 첨가제도 적절한 투입장치를 통해 퍼그밀에 투입하여 0.5-3분 동안 균일하게 혼합하도록 수정된다.Batch mixing as a plant regeneration system is adapted to eliminate the entire drum mix line for new aggregates and to use only waste ascon aggregate drum mix lines with a capacity of 2 tons or more per batch. Waste ascon aggregate is weighed by each size in cold bins and transferred to the belt and put into the waste ascon drum mix.The heated material, which has undergone the drum mix, is loaded into a hot bin without going through the shaft. do. The material stored in the hot bean is metered into the pug mill mixer for each batch, and at the same time, the appropriate amount of the regeneration modifier and the temperature control additive are added to the pug mill through a suitable feeding device and mixed uniformly for 0.5-3 minutes. It is corrected.
현장 재생 방식으로서의 가열밀링에 의한 가열혼합 방법(Hot-In-Place Hot Recycling)은 재생첨가제와 신규아스콘을 첨가하는 대신에 신규아스콘 첨가위치에 재생 개질제와 온도조정 첨가제를 투입하도록 장치를 변경할 수 있다.Hot-In-Place Hot Recycling as a Field Regeneration Method Instead of adding a regeneration additive and a new ascon, the apparatus may be changed to add a regeneration modifier and a temperature control additive to a new ascon addition position. .
현장 재생 방식으로서의 상온밀링에 의한 상온혼합방식(Cold-In-Place Cold Recycling)은 상온밀링 장비에 의해 수거된 폐아스콘을 전량 상온혼합기의 투입구에 투입하고, 재생 개질제 중의 무기분말재료 군의 하나 이상을 첨가할 별개의 투입구를 만들어 혼합기에 투입하고, 온도조정 첨가제의 수화제 군 하나 이상을 함께 상온혼합기에 투입하여 균일하게 혼합할 수 있다.Cold-in-Place Cold Recycling as an on-site regeneration method puts all of the waste ascon collected by the ambient temperature milling equipment into the inlet of the room temperature mixer, and at least one of the inorganic powder materials in the regeneration modifier. To make a separate inlet to add the added to the mixer, one or more groups of hydration of the temperature control additive can be added to the room temperature mixer together and mixed uniformly.
현장 재생 방식으로서의 상온밀링에 의한 가열혼합방식(Cold-In-Place Hot Recycling)은 상온밀링에 의한 상온혼합(Cold-In-Place Cold Recycling) 장비를 개조하여 폐아스콘, 재생 개질제 및 온도조정 첨가제를 가열 혼합할 수 있도록 수정되어야 한다.Cold-In-Place Hot Recycling as an on-site regeneration method is adapted to cold-in-place cold recycling equipment by using ordinary milling to remove waste ascon, regeneration modifiers and temperature control additives. It should be modified to allow heat mixing.
전술한 바와 같이, 본 발명은 폐아스콘 전량을 재활용함으로서, 폐아스콘 사용량에 제한을 두는 기존의 폐아스콘을 재활용 기술과는 현저한 차이가 있다. 본 발명에 의해 폐아스콘의 처리비용문제, 자연자원의 절약, 환경오염문제, 원자재구입 비용의 경감 등의 효과를 얻을 수 있다. 또한 재활용포장의 우수한 품질(소성변형과 피로균열 저항성 증대, 포트홀발생 방지, 등)로 인해 포장수명연장으로 인한 경제적 효과와 주요도로에 재사용함으로서 얻는 유지보수포장의 절약도 기대된다. 또한 재생아스콘 생산온도와 시공온도의 감소로 오염가스발생의 경감, 가열에너지의 절약 및 산화노화로 인한 품질저하의 감소 등의 효과도 얻을 수 있다. 뿐만 아니라 온도조정 첨가제를 조성물에 포함시킴으로서 상온혼합, 반 중온혼합 및 중온혼합 아스콘을 생산할 수 있게 된다. 이렇게 생산된 온도조정 개질 재생아스콘은 모든 종류의 아스팔트포장, 즉, 차량주행 도로, 주차장, 공항포장 및 화물 하적장의 마모층, 표층, 기층 및 보조기층 재료로 사용될 수 있다. 아울러, 폐아스콘의 재활용 촉진을 통하여 자원의 유효이용, 외화절감 및 폐아스콘 불법매립에 의한 환경피해 예방, 생산온도 저감에 따른 기여할 수 있을 것으로 기대된다.As described above, the present invention recycles the entire amount of waste ascon, there is a significant difference from the existing waste ascon recycling technology to limit the amount of waste ascon used. According to the present invention, it is possible to obtain the effects of disposal cost of waste ascon, saving of natural resources, environmental pollution, reduction of raw material purchase cost, and the like. In addition, due to the excellent quality of recycled packaging (plastic deformation, increased fatigue crack resistance, prevention of potholes, etc.), it is also expected to save on the economical effect of prolonging the life of the pavement and the maintenance packaging obtained by reusing it on the main road. In addition, the reduction of recycled ascon production temperature and construction temperature can reduce the generation of polluting gas, saving heating energy and reducing the quality deterioration due to oxidation aging. In addition, by including the temperature control additive in the composition, it is possible to produce room temperature mixing, semi-mid temperature mixing, and medium temperature mixing ascon. The thermoregulated recycled asphalt concrete produced in this way can be used as a wear layer, surface layer, base layer and auxiliary base material of all kinds of asphalt pavement, ie driving road, parking lot, airport pavement and cargo unloading. In addition, by promoting the recycling of waste ascon, it is expected to contribute to the effective use of resources, to reduce foreign currency and to prevent environmental damage caused by illegal landfilling of waste ascon, and to reduce production temperatures.
이하, 실시 예를 통하여 본 발명을 좀 더 구체적으로 살펴보지만, 하기 예에 본 발명의 범주가 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.
실시 예 1Example 1
SBS 5중량부, PE 4중량부, 스테아린산 1중량부, 피롤 0.1 중량부 및 왁스 4중량부를 혼합기에 투입하고 135에서 약 30분간 혼합시킨 후 균일한 미세입자 형태의 중 온 재생 개질제를 제조하였다. 최대입자 크기가 19가 되도록 분쇄한 임의의 입도분포도를 가진 폐아스콘 100중량부와 상기에서 제조한 중온 재생 개질제 입자 1.2중량부를 135의 오븐에 넣고 30분 간 가열시켰다. 가열한 혼합물을 135의 혼합기에 넣고 3분간 혼합하여 본 발명에 따른 중온 개질 재생아스콘 혼합물을 제조하였다.5 parts by weight of SBS, 4 parts by weight of PE, 1 part by weight of stearic acid, 0.1 part by weight of pyrrole and 4 parts by weight of wax were added to the mixer and mixed at 135 for about 30 minutes to prepare a moderate temperature regeneration modifier in the form of uniform fine particles. 100 parts by weight of waste ascone having an arbitrary particle size distribution ground to a maximum particle size of 19 and 1.2 parts by weight of the medium temperature regeneration modifier particles prepared above were put into an oven at 135 and heated for 30 minutes. The heated mixture was placed in a mixer of 135 and mixed for 3 minutes to prepare a mesophilic modified recycled ascon mixture according to the present invention.
이렇게 제조된 중온 개질 재생아스콘 혼합물의 품질특성을 파악하기 위하여 다음 시험을 실시하였다. 내경이 101.6이고 높이가 100 인 마샬 몰드에 상기에서 제조한 재생 아스콘 혼합물을 1100g넣고 양면 50회 다짐을 실시하여, 직경이 101.6이고 높이가 63.5인 마샬 공시체를 제작하고, 반복해서 18개를 만들었다. 이 공시체를 하루 동안 실온에서 경화시킨 후, 마샬 안정도시험을 실시하여 안정도와 흐름 값을 구하였다.The following tests were carried out to grasp the quality characteristics of the mesophilic modified recycled ascon mixture. In a Marshall mold having an internal diameter of 101.6 and a height of 100, 1100 g of the recycled ascon mixture prepared above was compacted and compacted 50 times on both sides to prepare a Marshall specimen having a diameter of 101.6 and a height of 63.5, and repeatedly, 18 pieces were made. The specimens were cured at room temperature for one day and then subjected to Marshall stability test to obtain stability and flow values.
또한 포장구조체의 거동특성을 파악하기 위하여 간접인장강도시험(indirect tensile strength : ITS)을 실시하였으며, 공시체는 양면 50회 다짐한 직경 101.6, 높이 63.5±1mm인 마샬공시체를 사용하였다. 공시체 상단과 하단에 위치한 재하대를 이용하여 50/min의 속도로 하중을 재하 하였으며, 이때 공시체는 시험 전에 3시간동안 25의 항온기에 보관하였다가 꺼내어 즉시 시험에 사용하였다.In addition, indirect tensile strength test (ITS) was performed to investigate the behavior of pavement structure. The specimens were Marshall specimens with diameter of 101.6 and height of 63.5 ± 1mm. The loading was carried out at a rate of 50 / min using a loading stand located at the top and bottom of the specimen, and the specimen was stored in a thermostat of 25 hours for 3 hours before the test and immediately taken out.
소성변형저항성을 알아보기 위하여 135에서 상기에서 제조된 온도조정 개질 재생 아스콘 혼합물을 바퀴주행시험 몰드에 12Kg 달아서 넣고 직경이 46인 가압롤러를 이용하여 17~23/sec의 다짐속도로 다짐하여 30cm×30cm×5cm의 공시체를 얻었다. 이 공시체를 실온에서 18시간 양생한 후 가열 및 온도조절장치가 부착된 고온 항온실내에 부착하고 시험온도인 60에서 6시간 양생하였다. 양생된 공시체위에 반복차 륜 하중을 가하여 주행회수에 따른 변형을 측정하였으며, 주행시험이 시작한 후부터 40-60분 사이의 변형 값에서 동적안정도를 측정하였다. 이때 시험온도는 60, 차륜 접지압은 5.6kgf/, 차륜 통과회수는 42회/분, 차륜주행거리는 23/회, 반복주행시간은 60분으로 하였으며, 시험차륜의 폭은 5, 직경은 20인 것을 사용하였다.To determine the plastic deformation resistance, the temperature-adjusted modified recycled ascon mixture prepared in 135 above was weighed 12 kg into a wheel driving test mold, and compacted at a compaction speed of 17 to 23 / sec using a pressure roller having a diameter of 46 to 30 cm ×. A specimen of 30 cm x 5 cm was obtained. The specimens were cured at room temperature for 18 hours, and then placed in a high temperature chamber equipped with a heating and thermostat, and cured at 60 ° C. for 6 hours. Repeated wheel load was applied to the cured specimens to measure the deformation according to the number of driving, and the dynamic stability was measured at the deformation value between 40 and 60 minutes after the driving test. At this time, the test temperature was 60, the wheel ground pressure was 5.6kgf /, the number of wheel passages was 42 times / minute, the wheel driving distance was 23 / time, the repeat driving time was 60 minutes, and the width of the test wheel was 5 and the diameter was 20. Used.
한랭조건 하에서 재생 아스콘 혼합물의 체인에 의한 마모저항성을 측정하기 위하여 라벨링 시험을 실시하였으며, 시편제작과정은 상기 동적안정도 시험의 경우와 동일하다. 시험용 시편이 설치된 테이블을 5rpm의 속도로 회전시키는 가운데, 1회 시험 시 총 12본의 체인을 부착한 지름 250, 폭 100인 바퀴가 200rpm으로 회전하면서 강하하여 공시체에 닿게 하고 그 표면을 체인으로 박리 마모시킨 후 그 마모량을 측정하였다.The labeling test was performed to measure the wear resistance by the chain of recycled ascon mixture under cold conditions, and the specimen fabrication process is the same as that of the dynamic stability test. While rotating the table equipped with test specimens at a speed of 5rpm, a wheel with a diameter of 250 and a width of 100 with a total of 12 chains was rotated at 200rpm in a single test, descending to reach the specimen and peeling the surface with a chain. After wear, the amount of wear was measured.
그 결과를 신재 아스콘과 비교하여 하기 표 1에 나타내었다.The results are shown in Table 1 below in comparison with new Ascon.
표 1TABLE 1
(바퀴주행시험)Dynamic stability
(Wheel driving test)
먼저 중온 개질 재생아스콘의 혼합물시편을 제조하는 온도가 중온인 135임을 상기할 필요가 있으며, 상기 온도는 일반 신규 아스콘혼합물의 제조온도인 165보다 약 30가 적다. 이처럼 낮아진 온도는 아스콘생산온도를 30 정도 낮추어도 생산이 가능 하다는 의미이며, 이로 인해 가열연료비의 절감이 예상된다. 상기 표 1로부터 알 수 있는 바와 같이, 본 발명에 따른 재생 개질제를 이용한 중온 개질 재생아스콘 혼합물의 품질은 신재 아스콘에 비하여 안정도는 43%, 흐름 값은 32% 증가하는 것으로 나타나 마샬안정도 특성이 크게 개선된 것으로 확인된다.First, it is necessary to recall that the temperature for preparing the mixture specimen of the medium-temperature modified recycled ascon is 135, which is a medium temperature, and the temperature is about 30 less than that of the general new ascon mixture. This lowered temperature means that production is possible even if the ascon production temperature is lowered by about 30, which is expected to reduce heating fuel costs. As can be seen from Table 1, the quality of the medium-temperature modified regenerated ascon mixture using the regeneration modifier according to the present invention is 43% higher than the new ascon, the stability is increased by 32%, the flow value is significantly improved Marshall stability characteristics Is confirmed.
또한 간접인장강도는 38%, 동적안정도는 200% 증진되고, 마모량은 30% 감소하는 것으로 나타나 역학적 특성 및 내구성이 크게 증진된 것으로 나타난다.In addition, the indirect tensile strength increased by 38%, the dynamic stability increased by 200%, and the wear amount decreased by 30%, indicating that the mechanical properties and durability were greatly improved.
상기 시험결과를 통하여 본 발명의 재생 개질제를 이용한 중온 개질 재생아스콘 혼합물의 유동저항성, 마모저항성, 동적 안정도, 균열저항성 등의 역학적 성능 및 내구성이 매우 우수한 것으로 확인된다.Through the test results, it was confirmed that the mechanical properties and durability of the flow resistance, abrasion resistance, dynamic stability, crack resistance, etc. of the mesophilic modified reclaimed ascon mixture using the regeneration modifier of the present invention are very excellent.
실시 예 2Example 2
상온의 혼합기에 최대입자가 19mm이며 임의의 분포도를 가진 폐아스콘 100중량부, 재생 개질제로서 점토 3중량부, 시멘트 1중량부 및 P-페닐디아민 0.2 중량부, 온도조정 첨가제로서 고형분이 69%인 라텍스 용액 8중량부를 함께 투입하고 균일하게 혼합시켜 본 발명에 따른 상온 개질 재생아스콘 혼합물을 제조하였다. 이 혼합물을 실시 예 1에서 기술한 시험방법에 따라 상온에서 각각 시편을 만들고 하루 동안 상온에서 경화시킨 후 물성을 측정하였으며 그 결과는 표 2에 나타나 있다.100 parts by weight of waste ascon with an arbitrary distribution, 19 parts by weight in a mixer at room temperature, 3 parts by weight of clay as a regeneration modifier, 1 part by weight of cement and 0.2 part by weight of P-phenyldiamine, and 69% solids as a temperature control additive. 8 parts by weight of the latex solution was added together and uniformly mixed to prepare a room temperature modified regenerated ascon mixture according to the present invention. According to the test method described in Example 1, each specimen was made at room temperature, cured at room temperature for one day, and then physical properties were measured. The results are shown in Table 2.
표 2TABLE 2
(바퀴주행시험)Dynamic stability
(Wheel driving test)
실시 예 2의 상온혼합인 경우에는 중온혼합인 실시 예 1의 경우와 비교하여, 물성이 다소 감소했음을 볼 수 있으나, 여전히 신규아스콘 혼합물의 물성과는 거의 동일하게 나타난다. 이러한 상온혼합물의 경우 물성은 신규아스콘의 경우와 동일하나 생산을 위한 가열비용이 전혀 없고 오염가스발생이 없어 상온 개질 재생아스콘의 이점이 많다.In the case of room temperature mixing of Example 2, it can be seen that the physical properties slightly reduced compared to the case of Example 1 which is a medium temperature mixing, but still appears almost the same as the physical properties of the new ascon mixture. In the case of the room temperature mixture, the physical properties are the same as in the case of the new ascon, but there is no heating cost for production and no pollution gas is generated, and thus, there are many advantages of the room temperature modified regenerated ascon.
실시 예 3Example 3
먼저 최대입자가 19mm이며 임의의 분포도를 가진 폐아스콘 100중량부를 용융시킨 후 90의 혼합기에 넣고, 재생 개질제로서 점토 4중량부, 시멘트 1 중량부 및 피리딘 0.1 중량부와 온도조정 첨가제로서 중탄산 암모니움 (Ammonium bicarbonate) 4중량부를 폐아스콘에 첨가한 후 약 3분간 혼합하였다. 혼합하는 동안 발포가 되어 아스팔트의 부피가 약간 증가하는 것이 목격되었다. 상기와 같이 하여 본 발명에 따른 반 중온 개질 재생아스콘 혼합물이 제조되었다. 이 혼합물을 실시 예 1에서 기술한 시험방법에 따라 반 중온(90)에서 각각 시편을 만들고 경화시킨 후 물성을 측정하였으며 그 결과는 표 3에 나타나 있다.First, 100 parts by weight of waste ascon having a maximum particle size of 19 mm and an arbitrary distribution is melted, and then put into a mixer of 90, 4 parts by weight of clay, 1 part by weight of cement and 0.1 part by weight of pyridine, and ammonium bicarbonate as a temperature control additive. 4 parts by weight of (Ammonium bicarbonate) was added to the waste ascone and mixed for about 3 minutes. A slight increase in the volume of the asphalt was observed due to foaming during mixing. As described above, a semi-mid temperature modified regenerated ascon mixture was prepared. According to the test method described in Example 1, the specimens were made and cured at half-mid-temperature (90), respectively, and their physical properties were measured. The results are shown in Table 3.
표 3TABLE 3
(바퀴주행시험)Dynamic stability
(Wheel driving test)
실시 예 3의 반 중온혼합물인 경우에는 중온혼합물인 실시 예 1의 경우와 비교하여, 물성이 약간 감소하였으나, 상온혼합물이나 신규아스콘 혼합물 물성보다는 우수하게 나타난다. 이러한 반 중온혼합물의 경우 물성은 신규아스콘의 경우와 동일하나 생산을 위한 가열비용이 줄어들고 오염가스발생이 거의 없어 바람직한 공법으로 사료된다.In the case of the semi-cold mixture of Example 3, the physical properties of the semi-cold mixture were slightly lower than those of the example 1 of the mesophilic mixture. The physical properties of these semi-cold mixtures are the same as those of the new ascon, but the heating cost for production is reduced and there is almost no pollution gas.
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2009
- 2009-09-07 KR KR20090083749A patent/KR20110026038A/en active IP Right Grant
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