KR101569361B1 - A Composite of modified Asphalt with water permeable property and noise reducing property - Google Patents
A Composite of modified Asphalt with water permeable property and noise reducing property Download PDFInfo
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- KR101569361B1 KR101569361B1 KR1020140159960A KR20140159960A KR101569361B1 KR 101569361 B1 KR101569361 B1 KR 101569361B1 KR 1020140159960 A KR1020140159960 A KR 1020140159960A KR 20140159960 A KR20140159960 A KR 20140159960A KR 101569361 B1 KR101569361 B1 KR 101569361B1
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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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/20—Mica; Vermiculite
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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
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/06—Macromolecular compounds fibrous
Abstract
Description
본 발명은 우천시 노면의 물이 빨리 배수될 수 있도록 공극율이 약 20∼27％ 정도인 포장용 배수성 아스팔트 제조 시 내열성 섬유질 무기물과/또는 내열성 무기질 분체와 탄산염 화합물 및 무기질 인산염 화합물를 사용하여 아스팔트 콘크리트의 물리적 특성을 향상시킴으로서, 배수성과 소음저감 특성을 구현할 수 있는 소음 저감형 배수성 아스팔트 개질제에 관한 것이다.The present invention relates to the physical properties of asphalt concrete using a heat-resistant fibrous inorganic material and / or a heat-resistant inorganic powder, a carbonate compound and an inorganic phosphate compound in the production of pavement drainable asphalt having a porosity of about 20 to 27% The present invention relates to a noise reducing paved asphalt modifier capable of realizing drainage and noise reduction characteristics.
일반적으로 아스팔트는 온도 변화에 따라 그 물성이 크게 달라지므로 이러한 아스팔트를 골재 등과 혼합하여 아스콘 상태로 제조한 후 일반도로 및 공항활주로에 포장하였을 경우, 계절에 따른 온도변화 및 아스팔트에 가해지는 반복하중에 의해 심한 변형이나 균열을 발생시키는 문제점이 종종 발생한다. 즉, 아스팔트는 저온에서는 취성을 나타내어 균열을 발생시키며, 고온에서는 점도가 낮아져 유동에 의한 소성변형(Rutting)을 일으키게 된다. 더구나 국민 생활수준이 전반적으로 향상됨으로써 차량대수가 점차 확대되고 이에 따른 교통량의 증가 및 차체의 중량화 등의 원인으로 상기 포장문제점이 더욱 촉진됨으로써 기존 아스팔트포장의 수명이 급격히 단축되고 있다.In general, the properties of asphalt vary greatly depending on the temperature. Therefore, when the asphalt is mixed with aggregate or the like and made into an ascon state and then packed in an ordinary road or airport runway, the seasonal temperature change and repeated load applied to the asphalt Thereby causing severe deformation or cracking. In other words, asphalt shows brittleness at low temperature and generates cracks. At high temperature, asphalt is low in viscosity and causes rutting due to flow. In addition, as the life standard of the people is improved, the number of vehicles is gradually increased, resulting in an increase in traffic volume and heavy weight of the vehicle body. As a result, the packing problem is further promoted, and the lifetime of existing asphalt pavement is rapidly shortened.
수명단축에 따른 경제적 손실을 해결하기 위하여 최근 들어 아스팔트의 특성을 우수하게 개질하기 위한 여러 가지 공학적인 연구가 활발히 진행되고 있는 실정이다. 일반적으로 개질제는 열가소성 고무로서 스티렌-부타디엔-스티렌 블록 공중합체나 스티렌-부타디엔 랜덤 공중합체를 도입하여 제조되는 것이 대부분이다.In order to solve the economic loss due to the shortening of the life span, various engineering studies have been actively carried out in recent years in order to improve the characteristics of the asphalt. Generally, the modifier is mostly prepared by introducing a styrene-butadiene-styrene block copolymer or a styrene-butadiene random copolymer as a thermoplastic rubber.
아스팔트를 개질(Modifying)하는 방법은 여러 가지가 있을 수 있으나, 이중 폴리머를 이용한 아스팔트의 개질 방법이 이론적 또는 경제적인 측면에서 가장 바람직한 방법으로 알려져 있으며, 특허문헌 등을 통하여 그 개질 방법 등이 많이 공개되어 있다.Modification of asphalt may be performed in various ways, but the method of modifying asphalt using the polymer is known as the most preferable method from the theoretical or economical point of view. .
예를 들면, 한국 등록특허 제0566957호에서는 스티렌-부타디엔-스티렌 선형블록 공중합체 40∼70중량％, 에폭시 수지 5∼15중량％, 저온 내한성 개선제 5∼20중량％, 점착 부여제 5∼22중량％, 자외선 흡수제 0.1∼1.0중량％ 및 열노화 방지제 0.1∼2.0중량％를 포함하는 고내구성 아스팔트 개질제를 개시하고 있고, 한국 등록특허 제218877호에서는 아스팔틴을 함유하는 아스팔트에 개질제를 첨가하여 폴리머 개질아스팔트 결합재를 제조하는 방법에 있어서, 개질제로서 저밀도폴리에틸렌과 카본블랙을 첨가하는 폴리머 개질 아스팔트 결합제의 제조방법을 개시하고 있다. 아울러, 한국 공개특허공보 제95-3393호, 동 제94-702908호, 동 제94-7121호, 일본국 특개소 52-105925호, 동 특개소51-63819호, 동 특개소 56-93757호, 동 특개소 56-98262호, 동 특개소 50-84622호, 동 특개소 49-98418호, 영국특허공보 제2270318호, 미국특허공보 제3,853,799호, 동 제3,992,341호, 동 제4,240,946, 동 제5,039,342호, 동 제5,037,474호, 등 다수의 특허문헌이 존재한다.For example, in Korean Patent No. 0566957, 40 to 70% by weight of a styrene-butadiene-styrene linear block copolymer, 5 to 15% by weight of an epoxy resin, 5 to 20% by weight of a low temperature cold resistance improving agent, , 0.1 to 1.0 wt% of an ultraviolet absorber, and 0.1 to 2.0 wt% of a heat aging inhibitor, and in Korean Patent No. 218877, a modifier is added to an asphalt-containing asphalt to prepare a polymer modified A process for producing an asphalt binder, which comprises adding low density polyethylene and carbon black as modifiers to a polymer modified asphalt binder. In addition, Korean Laid-open Patent Publications No. 95-3393, No. 94-702908, No. 94-7121, No. 52-105925, No. 51-63819, No. 56-93757 , JP-B-56-98262, JP-A-50-84622, JP-A-49-98418, GB-A-2270318, U.S. Patent Nos. 3,853,799, 3,992,341, 4,240,946, 5,039,342, 5,037,474, and the like.
상기 특허들에서 주로 사용되는 아스팔트 개질용 폴리머로서는 스틸렌부타디엔스틸렌(Styrene-butadienestyrene), 스틸렌부타디엔고무(Styrene-butadiene rubber), 에틸렌비닐아세테이트(Ethylene-viylacetate), 폴리에틸렌계 화합물 등이 있으며, 이들 폴리머를 아스팔트와 적정 비율로 혼합하게 되면 저온에서 균열 저항성 증진과 고온에서의 소성변형을 줄이는 효과를 나타내고 있는 것으로 기재하고 있으나, 개질제로서 첨가되는 화합물의 종류에 따른 개질 효과에 대하여는 명확히 기재하고 있지 못하다.Examples of the asphalt modifying polymer mainly used in the above patents include styrene-butadiene styrene, styrene-butadiene rubber, ethylene-viylacetate, and polyethylene-based compounds. It is described that mixing the asphalt with an appropriate ratio has the effect of improving the crack resistance at low temperature and reducing the plastic deformation at high temperature. However, the effect of modifying the compound according to the type of compound added as the modifier is not clearly described.
한편, 폴리에틸렌(PE)과 폴리프로필렌(PP)은 생활 주변에 흔히 사용되는 비교적 저렴한 폴리머로서 이를 아스팔트 개질제로서 재활용할 수 있다면 재료 구입원가 측면에서 매우 바람직하다. 그러나 폴리에틸렌(PE)과 폴리프로필렌(PP)은 상용성이 없어서 혼합하더라도 다른 두 상(phase)으로 재료분리가 일어나므로 두 상의 경계면에서 쉽게 균열이 발생하는 경향이 있다. 또한, 폴리에틸렌(PE)과 폴리프로필렌(PP)은 비극성 포화탄화수소 고분자로서 골재와의 친화력 부족으로 인한 접착력 부재로 아스팔트 개질제로서 부적합할 뿐만 아니라, 열가소성수지로서 0℃ 이하의 저온에서는 탄성이 적고 취성이 월등히 커서 충격에 쉽게 깨지는 문제점이 발생한다. 즉, 아스팔트 개질제로서 부적합한 재료라 할 수 있다.On the other hand, polyethylene (PE) and polypropylene (PP) are relatively inexpensive polymers commonly used in daily life and are highly desirable from the viewpoint of material purchase cost if they can be recycled as an asphalt modifier. However, since polyethylene (PE) and polypropylene (PP) are not compatible with each other, even if they are mixed, cracks tend to occur easily at the interface between the two phases since the material is separated into two phases. In addition, polyethylene (PE) and polypropylene (PP) are non-polar saturated hydrocarbon polymers that are not suitable as asphalt modifiers due to lack of affinity with aggregates, and also have low elasticity at low temperatures below 0 DEG C as thermoplastic resins, So that it is easily broken by impact. That is, it may be considered as a material unsuitable as an asphalt modifier.
따라서 본 발명은 폴리에틸렌 및 폴리프로필렌에 내열성이 우수한 무기질 섬유상 재료를 혼합시켜 상대적으로 높은 온도에서 강한 전단혼합을 행하면 탄성을 가진 골재와의 부착력을 향상시키는 균일물질이 제조될 수 있음을 발견하였고, 여기에 화합물 간의 균일분산을 목적으로 탄산염 화합물과 무기질 인산염 화합물을 첨가시킨다면 아스팔트 개질제 조성물로서 전혀 손색이 없으며, 무엇보다도 기존의 개질제에 의해 나타나는 상 분리 현상, 골재와의 친화력 부족 및 약한 탄성의 문제점을 모두 해결할 수 있음을 주목하게 되어, 본 발명은 이에 기초하여 완성되었다.Accordingly, the present invention has been made to find that a homogeneous material capable of improving the adhesion with an aggregate having elasticity can be produced by mixing an inorganic fibrous material having excellent heat resistance to polyethylene and polypropylene and performing strong shear mixing at a relatively high temperature, The addition of a carbonate compound and an inorganic phosphate compound for the purpose of uniform dispersion of the compounds in the composition of the present invention is not harmful as an asphalt modifier composition. In particular, the present invention is free from all of the problems of phase separation, lack of affinity with aggregates and weak elasticity It is noted that the present invention has been completed on the basis thereof.
따라서 본 발명의 목적은 폴리에틸렌 및 폴리프로필렌을 포함함에도 불구하고 상 분리 현상이 일어나지 않으며, 골재와의 친화력이 높고, 우수한 탄성을 나타내며 소음 저감과 더불어 배수성능이 향상되는 폴리에틸렌 및 폴리프로필렌을 포함하는 아스팔트 개질제를 제공하는 데 있다.Therefore, an object of the present invention is to provide an asphalt-containing asphalt comprising polyethylene and polypropylene which does not undergo phase separation even though it contains polyethylene and polypropylene, exhibits high affinity with aggregates, exhibits excellent elasticity, And to provide a modifier.
상기 목적을 달성하기 위하여, 본 발명은, 폴리에틸렌 및 폴리프로필렌을 포함하는 아스팔트 개질제는 폴리에틸렌 10∼60중량％; 폴리프로필렌 10∼60중량％; 내열성이 우수한 섬유상 구조로 이루어진 애타풀자이트(attapulgite)가 40∼80중량부와 내열성이 우수한 운모(mica)가 20∼60 중량부로 구성된 내열성이 우수한 무기질 섬유상 재료 20∼60 중량％; 탄산염 화합물 3∼7중량％와 무기질 인산염이 3∼7중량％로 구성된다.In order to achieve the above object, the present invention provides an asphalt modifier comprising polyethylene and polypropylene, comprising 10 to 60% by weight of polyethylene; 10 to 60% by weight of polypropylene; 20 to 60% by weight of an inorganic fibrous material having excellent heat resistance and comprising 40 to 80 parts by weight of attapulgite having a fiber structure excellent in heat resistance and 20 to 60 parts by weight of mica having excellent heat resistance; 3 to 7% by weight of a carbonate compound and 3 to 7% by weight of an inorganic phosphate.
본 발명의 특징은 폴리에틸렌 및 폴리프로필렌을 포함함에도 불구하고 상 분리 현상이 일어나지 않으며, 골재와의 친화력이 높고, 우수한 탄성을 나타내며 소음 저감과 더불어 배수성능이 향상되는 폴리에틸렌 및 폴리프로필렌을 포함하는 아스팔트 개질제를 제공하는 것으로서,A feature of the present invention is to provide an asphalt modifier comprising polyethylene and polypropylene which does not cause phase separation even though it contains polyethylene and polypropylene, exhibits high affinity with aggregates, exhibits excellent elasticity, And,
내열성이 우수한 무기질 섬유상 재료는 섬유상 구조로 이루어진 애타풀자이트(attapulgite)가 40∼80중량부와 내열성이 우수한 운모(mica)가 20∼60 중량부로 구성되는 것을 특징으로 하며,The inorganic fiber material excellent in heat resistance is characterized by comprising 40 to 80 parts by weight of attapulgite having a fibrous structure and 20 to 60 parts by weight of mica having excellent heat resistance.
애타풀자이트는 길이가 100μm 이상인 것을 사용하는 것을 특징으로 하며, 운모는 분말도가 2,000∼4000g/cm2 범위의 것을 사용하는 것을 특징으로 한다.The atypical phase is characterized by using a material having a length of at least 100 mu m, and the mica is characterized by using a powder having a particle size in the range of 2,000 to 4,000 g / cm < 2 >.
탄산염화합물은 탄산나트륨, 탄산칼륨, 탄산암모늄, 탄산칼슘 등에서 하나 또는 둘이상의 혼합물을 사용하는 것을 특징으로 한다.The carbonate compound is characterized by using one or a mixture of two or more of sodium carbonate, potassium carbonate, ammonium carbonate, calcium carbonate and the like.
무기질 인산염 화합물은 암모니움 폴리 포스페이트, 소디움 폴리 포스페이트, 칼슘 폴리 포스페이트 등에서 하나 또는 둘이상의 혼합물을 사용하는 것을 특징으로 한다.The inorganic phosphate compound is characterized by using one or a mixture of two or more of ammonium polyphosphate, sodium polyphosphate, calcium polyphosphate and the like.
본 발명에 의한 소음저감형 배수성 아스팔트 개질제 조성물에 의하면, 우천시 노면의 물이 빨리 배수될 수 있도록 공극율이 약 20∼27％ 정도인 포장용 배수성 아스팔트 제조 시, 아스팔트 콘크리트의 물리적 특성을 향상시킴으로서, 배수성과 소음저감 특성을 구현할 수 있으며, 공지의 아스팔트 콘크리트 보다 내한성이 우수하며, 기존의 개질제에 의해 나타나는 상 분리 현상, 골재와의 친화력 부족 및 약한 탄성의 문제점을 모두 해결할 수 있는 경제적인 아스팔트 콘크리트를 제조할 수 있는 효과가 있다.According to the noise reducing pavement asphalt modifier composition according to the present invention, the physical properties of the asphalt concrete are improved when manufacturing the pavement drainable asphalt having a porosity of about 20 to 27% so that the water on the road surface can be drained quickly in the rain. It is possible to manufacture economical asphalt concrete which can realize noise reduction characteristics, has better cold resistance than known asphalt concrete, solves the problems of phase separation, lack of affinity with aggregate and weak elasticity caused by existing modifiers There is an effect that can be.
이하 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명은, 폴리에틸렌 및 폴리프로필렌을 포함하는 아스팔트 개질제는 폴리에틸렌 10∼60중량％; 폴리프로필렌 10∼60중량％; 내열성이 우수한 섬유상 구조로 이루어진 애타풀자이트(attapulgite)가 40∼80중량부와 내열성이 우수한 운모(mica)가 20∼60 중량부로 구성된 내열성이 우수한 무기질 섬유상 재료 20∼60 중량％; 탄산염 화합물 3∼7중량％와 무기질 인산염이 3∼7 중량％로 구성되며,According to the present invention, the asphalt modifier comprising polyethylene and polypropylene comprises 10 to 60% by weight of polyethylene; 10 to 60% by weight of polypropylene; 20 to 60% by weight of an inorganic fibrous material having excellent heat resistance and comprising 40 to 80 parts by weight of attapulgite having a fiber structure excellent in heat resistance and 20 to 60 parts by weight of mica having excellent heat resistance; 3 to 7% by weight of a carbonate compound and 3 to 7% by weight of an inorganic phosphate,
통상 현장배합방식에 의한 개질아스콘 제조방법과 동일하게, 골재 83중량부, 모래 12 중량부, 채움제 5중량부로 혼합된 골재 100 중량부에 대하여 아스팔트 3∼8중량부, 상기 본 발명의 아스팔트 개질제 1∼5중량부를 아스콘 플랜트의 퍼-그밀에 투입하고 170∼200℃에서 40초 내지 180초 동안 혼합하여 개질 아스콘을 제공할 수 있다. 상기에서 언급한 골재 및 아스팔트는 당 업계에서 통상적으로 사용되는 것을 사용하며, 특별한 제한은 없다.3 to 8 parts by weight of the asphalt is added to 100 parts by weight of the aggregate mixed with 83 parts by weight of the aggregate, 12 parts by weight of the sand and 5 parts by weight of the filler, 1 to 5 parts by weight are put into a per-mill of an ascon plant and mixed at 170 to 200 캜 for 40 to 180 seconds to provide a modified ascon. The aggregates and asphalt mentioned above are those conventionally used in the art, and there is no particular limitation.
Claims (5)
폴리에틸렌 및 폴리프로필렌을 포함하는 아스팔트 개질제는 폴리에틸렌 10∼60중량％; 폴리프로필렌 10∼60중량％; 내열성이 우수한 섬유상 구조로 이루어진 애타풀자이트(attapulgite)가 40∼80중량부와 내열성이 우수한 운모(mica)가 20∼60중량부로 구성된 내열성이 우수한 무기질 섬유상 재료 20∼60 중량％; 탄산염 화합물 3∼7중량％와 무기질 인산염이 3∼7 중량％로 구성되되,
상기 애타풀자이트는 길이가 100μm 이상인 것을 사용하는 것을 특징으로 하며, 상기 운모는 분말도가 2,000∼4000g/cm2 범위의 것을 사용하며,
상기 탄산염 화합물은 탄산나트륨, 탄산칼륨, 탄산암모늄, 탄산칼슘을 하나 또는 둘이상의 혼합물로 사용하고,
상기 무기질 인산염은 암모니움 폴리 포스페이트, 소디움 폴리 포스페이트, 칼슘 폴리 포스페이트를 하나 또는 둘이상의 혼합물로 사용하며,
상기 폴리에틸렌 및 폴리프로필렌에 상기 무기질 섬유상 재료를 혼합시켜 고온에서 전단혼합을 행한 후, 상기 탄산염 화합물 및 무기질 인산염을 첨가시켜 화합물이 균일하게 분산되도록 하는 것을 특징으로 하는 소음저감형 배수성 아스팔트 개질제 조성물According to the present invention,
The asphalt modifier comprising polyethylene and polypropylene comprises 10 to 60% by weight of polyethylene; 10 to 60% by weight of polypropylene; 20 to 60% by weight of an inorganic fibrous material having excellent heat resistance and comprising 40 to 80 parts by weight of attapulgite having a fiber structure excellent in heat resistance and 20 to 60 parts by weight of mica having excellent heat resistance; 3 to 7% by weight of a carbonate compound and 3 to 7% by weight of an inorganic phosphate,
The atypical phase has a length of at least 100 mu m, and the mica has a particle size in the range of 2,000 to 4,000 g / cm < 2 &
The carbonate compound may be one or two or more of a mixture of sodium carbonate, potassium carbonate, ammonium carbonate, and calcium carbonate,
The inorganic phosphate uses ammonium polyphosphate, sodium polyphosphate and calcium polyphosphate in one or a mixture of two or more,
Wherein said inorganic fibrous material is mixed with said polyethylene and polypropylene and subjected to shear mixing at a high temperature and then said carbonate compound and inorganic phosphate are added to uniformly disperse the compound,
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102246443B1 (en) | 2020-11-16 | 2021-04-30 | 광덕아스콘 주식회사 | Layering system for absorbing noise by stacking selected aggregate |
| KR102531509B1 (en) | 2022-05-23 | 2023-05-11 | 광덕아스콘 주식회사 | System for stacking aggregate equipped with low noise having layer of drainage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003201701A (en) * | 1996-07-15 | 2003-07-18 | Railway Technical Res Inst | Method for constructing railway ballast using asphalt structural material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003201701A (en) * | 1996-07-15 | 2003-07-18 | Railway Technical Res Inst | Method for constructing railway ballast using asphalt structural material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102246443B1 (en) | 2020-11-16 | 2021-04-30 | 광덕아스콘 주식회사 | Layering system for absorbing noise by stacking selected aggregate |
| KR102531509B1 (en) | 2022-05-23 | 2023-05-11 | 광덕아스콘 주식회사 | System for stacking aggregate equipped with low noise having layer of drainage |
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