KR20130002654A - Non sticking asphalt emulsion and manufacturing method thereof - Google Patents
Non sticking asphalt emulsion and manufacturing method thereof Download PDFInfo
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Abstract
본 발명은 도로포장에서 아스콘을 적층 시공할 때 아스콘층 상호 간의 접착제로 사용하는 유화아스팔트에 관한 것으로서, 더욱 상세하게는 도로포장의 아스콘 포설 과정에서 투입되는 덤프트럭의 타이어에 쉽게 달라붙지 않아 손실되지 않도록 점착성을 줄인 유화아스팔트 조성물과 그 제조방법에 관한 것이다.
본 발명에 따른 비점착성 유화아스팔트 조성물은, 95~99.9중량%의 물, 0.05~3.0중량%의 산, 0.05~3.0중량%의 유화제로 조성된 유화액 15~60중량%; 스트레이트 아스팔트 30~80중량%; 연화점이 90~150℃인 석유수지 5~25중량%;로 구성되는 것을 특징으로 한다.The present invention relates to an emulsified asphalt used as an adhesive between ascon layers when laminating ascon in road paving. More specifically, the present invention is not easily attached to a tire of a dump truck that is put into the asphalt during asphalt paving process. The present invention relates to an emulsified asphalt composition having a reduced adhesiveness and a method of manufacturing the same.
The non-tacky emulsified asphalt composition according to the present invention comprises: 15 to 60% by weight of an emulsion composed of 95 to 99.9% by weight of water, 0.05 to 3.0% by weight of acid, and 0.05 to 3.0% by weight of an emulsifier; Straight asphalt 30 to 80% by weight; It is characterized by consisting of; 5 to 25% by weight of a petroleum resin having a softening point of 90 ~ 150 ℃.
Description
본 발명은 도로포장에서 아스콘을 적층 시공할 때 아스콘층 상호 간의 접착제로 사용하는 유화아스팔트에 관한 것으로서, 더욱 상세하게는 도로포장의 아스콘 포설 과정에서 투입되는 덤프트럭의 타이어에 쉽게 달라붙지 않아 손실되지 않도록 점착성을 줄인 유화아스팔트 조성물과 그 제조방법에 관한 것이다.
The present invention relates to an emulsified asphalt used as an adhesive between ascon layers when laminating ascon in road paving. More specifically, the present invention is not easily attached to a tire of a dump truck that is put into the asphalt during asphalt paving process. The present invention relates to an emulsified asphalt composition having a reduced adhesiveness and a method of manufacturing the same.
일반적으로 아스콘(아스팔트콘크리트) 도로포장은 아스콘을 여러 층으로 적층 시공하는데, 이때 여러 층의 아스콘은 하나의 덩어리로 일체화되도록 시공함으로써 차량하중에 대한 저항력을 강화시킨다. 여러 층의 아스콘이 각각 분리되어 있다면, 한 층에 집중적인 차량하중이 재하됨으로 인해 쉽게 손실되기 때문이다. 이에 따라 아스콘 도로포장에는 접착제로 유화아스팔트를 사용하면서 시공한다. 즉 아스콘 층 위에 유화아스팔트를 살포하고 그 위에 다시 아스콘을 포설하면서 적층 시공하는 것이다. In general, ascon (asphalt concrete) pavement is constructed by stacking ascon in several layers, in which multiple layers of ascon are integrated into a single mass to increase resistance to vehicle loads. If several layers of asphalt concrete are separated from each other, the concentrated vehicle load on one floor is easily lost. Accordingly, Ascon road pavement is used with emulsified asphalt as adhesive. In other words, it is spraying emulsified asphalt on the asphalt concrete layer and laying the asphalt concrete again on it.
현재 범용적으로 사용되는 유화아스팔트는 'KS M 2203 유화아스팔트'에 규정되어 있으며, 택코트용의 아스콘 접착제로서 유화아스팔트는 RSC-4가 있다. 그런데 RSC-4는 아스콘층에 살포된 후 상부 아스콘층을 포설하기 위하여 투입되는 덤프트럭의 타이어에 쉽게 달라붙어 손실되기 때문에, 접착제로서의 제역할을 하지 못하는 문제점이 있다.
Emulsified asphalt is generally used in KS M 2203 emulsified asphalt, which is used as a tack coat ascone adhesive, and RSC-4 is emulsified asphalt. However, since RSC-4 is easily sprayed onto the asphalt of the dump truck, which is sprayed onto the asphalt concrete layer, and is attached to the dump truck to install the upper asphalt concrete layer, the RSC-4 may not serve as an adhesive.
본 발명은 종래 아스콘 접착제로서 유화아스팔트의 문제를 개선하고자 개발된 것으로서, 덤프트럭의 주행 시 타이어에 의해 쉽게 손실되지 않는 비점착성의 유화아스팔트 조성물과 그 제조방법을 제공하고자 한다.
The present invention was developed to improve the problem of emulsified asphalt as a conventional ascon adhesive, and to provide a non-adhesive emulsified asphalt composition that is not easily lost by a tire when driving a dump truck and a method of manufacturing the same.
상기한 기술적 과제를 해결하기 위해 본 발명은, 95~99.9중량%의 물, 0.05~3.0중량%의 산, 0.05~3.0중량%의 유화제로 조성된 유화액 15~60중량%; 스트레이트 아스팔트 30~80중량%; 연화점이 90~150℃인 석유수지 5~25중량%;로 구성되는 것을 특징으로 하는 비점착성 유화아스팔트 조성물을 제공한다.The present invention to solve the above technical problem, 15 to 60% by weight of the emulsion composition of 95 to 99.9% by weight of water, 0.05 to 3.0% by weight of acid, 0.05 to 3.0% by weight of an emulsifier; Straight asphalt 30 to 80% by weight; It provides a non-adhesive emulsified asphalt composition comprising a softening point of 5 to 25% by weight of petroleum resin of 90 ~ 150 ℃.
또한 본 발명은 상기와 같은 유화아스팔트 조성물로 유화아스팔트를 제조하는 방법으로서, 제1혼합기에 물, 산, 유화제를 투입하고 20~70℃에서 10~120분간 교반하여 유화액을 만드는 제1단계; 제2혼합기에 스트레이트 아스팔트와 석유수지를 투입하고 130~180℃에서 10~120분간 교반하는 제2단계; 제3혼합기에 제1단계의 유화액과 제2단계의 교반액을 투입 혼합하는 제3단계;로 이루어지는 것을 특징으로 하는 비점착성 유화아스팔트의 제조방법을 제공한다.
In another aspect, the present invention provides a method for producing an emulsion asphalt using the above-mentioned emulsion asphalt composition, the first step of adding water, acid, emulsifier to the first mixer and stirring for 10 to 120 minutes at 20 ~ 70 ℃; A second step of adding straight asphalt and petroleum resin to a second mixer and stirring at 130 to 180 ° C. for 10 to 120 minutes; It provides a method for producing a non-adhesive emulsified asphalt comprising the third step; the third step of mixing the first step of the emulsion and the second step of the stirring solution in the third mixer.
본 발명에 따르면, 점착성이 낮은 유화아스팔트를 제공할 수 있다. 이에 따라 본 발명에 따른 유화아스팔트는 도로포장의 아스콘 포설 과정에서 투입되는 덤프트럭의 타이어 접착에 따른 손실을 줄일 수 있기 때문에, 아스콘 도로 포장시 택코트용으로 유리하게 사용할 수 있다. 다시 말해 덤프트럭의 주행에도 본 발명에 따른 유화아스팔트는 그대로 보존되기 때문에 그 위로 아스콘을 포설할 때 유화아스팔트가 아스콘 포장온도(140℃)에 용융하면서 상하 아스콘 층의 결합에 효과적으로 기여하게 된다. 특히 유지보수를 위해 절삭 후 아스콘 오버레이(overlay)를 하는 현장에서는 유화아스팔트에 의한 상하 아스콘 층의 결합력 확보가 중요한데, 이 경우에 본 발명에 따른 유화아스팔트는 효과적으로 작용한다.
According to the present invention, an emulsified asphalt having low adhesiveness can be provided. Accordingly, the emulsified asphalt according to the present invention can be advantageously used for the tack coat when paving asphalt roads, since the loss due to the tire adhesion of the dump trucks put into the asphalt road installation of asphalt roads can be reduced. In other words, since the emulsified asphalt according to the present invention is preserved even when the dump truck is running, the emulsified asphalt is melted at the asphalt concrete packaging temperature (140 ° C.) when it is laid thereon, thereby effectively contributing to the bonding of the upper and lower asphalt concrete layers. Particularly, it is important to secure the bonding force of the upper and lower ascon layers by the emulsion asphalt in the site where the asphalt concrete is cut after maintenance for maintenance. In this case, the emulsion asphalt according to the present invention works effectively.
도 1은 본 발명에 따른 유화아스팔트와 종래의 유화아스팔트의 점착력을 실험하기 위한 방법에 대한 개요도이다.
도 2a와 도 2b는 도 1에 따라 실험한 결과로서, 도 2a는 본 발명에 따른 유화아스팔트의 실험결과이고, 도 2b는 종래 유화아스팔트의 실험결과이다.
도 3a와 도 3b는 현장 실험결과로서, 도 3a는 본 발명에 따른 유화아스팔트의 실험결과이고, 도 3b는 종래 유화아스팔트의 실험결과이다.
도 4는 본 발명에 따른 유화아스팔트의 제조방법에 대한 개요도이다.1 is a schematic view of a method for testing the adhesive force of the emulsion asphalt and the conventional emulsion asphalt according to the present invention.
2a and 2b are the results of the experiment according to Figure 1, Figure 2a is the experimental result of the emulsion asphalt according to the present invention, Figure 2b is a test result of the conventional emulsion asphalt.
3A and 3B are field test results, FIG. 3A is a test result of the emulsion asphalt according to the present invention, and FIG. 3B is a test result of a conventional emulsion asphalt.
Figure 4 is a schematic diagram of a method for producing an emulsion asphalt according to the present invention.
본 발명은 유화아스팔트 조성물과 그 제조방법에 관한 것이며, 이하부터는 이 둘을 구분하여 설명한다.
The present invention relates to an emulsified asphalt composition and a method for producing the same, hereinafter, the two will be described separately.
1. 유화아스팔트 조성물1. Emulsified asphalt composition
본 발명은 도로포장에서 아스콘을 적층 시공할 때 아스콘층 상호 간의 접착제로 사용하기 위한 유화아스팔트로서, 석유수지를 적절히 사용하여 유화아스팔트의 연화점은 올리고 침입도는 낮추어 점착성을 떨어뜨리도록 한다는데 특징이 있다.The present invention is an emulsified asphalt for use as an adhesive between ascon layers when laminating ascon in road pavement, by using petroleum resin appropriately, the softening point of emulsified asphalt is lowered and the penetration is lowered to reduce adhesiveness. have.
구체적으로 본 발명에 따른 유화아스팔트는, 95~99.9중량%의 물, 0.05~3.0중량%의 산, 0.05~3.0중량%의 유화제로 조성된 유화액 15~60중량%; 스트레이트 아스팔트 30~80중량%; 연화점이 90~150℃인 석유수지 5~25중량%;로 구성되는 것을 특징으로 한다.Specifically, the emulsion asphalt according to the present invention, 15 to 60% by weight of the emulsion composition of 95 to 99.9% by weight of water, 0.05 to 3.0% by weight of acid, 0.05 to 3.0% by weight of an emulsifier; Straight asphalt 30 to 80% by weight; It is characterized by consisting of; 5 to 25% by weight of a petroleum resin having a softening point of 90 ~ 150 ℃.
유화액은 스트레이트 아스팔트를 유화시키면서 균일하게 분산시키기 위한 것으로, 본 발명에서는 95~99.9중량%의 물, 0.05~3.0중량%의 산, 0.05~3.0중량%의 유화제로 조성할 것을 제안한다. 여기서 유화제는 지방산염(Fatty acid salts), 황산염(Sulphates), 아민계열, 베타인(Betain) 등을 사용할 수 있으며, 다만 아민계열이 가장 유화가 잘 되고 안정성이 양호하다. 산은 구입과 취급이 편리한 30~50% 농도의 염산 또는 초산을 사용하면 적당하며, 유화아스팔트의 안정성을 위해 PH 1~4를 확보할 수 있는 양으로 사용한다. 유화액은 전체 유화아스팔트에서 15~60중량%가 적당한, 15중량% 미만이면 스트레이트 아스팔트와 석유수지의 양이 상대적으로 많아져 유화효과가 떨어지고, 60중량% 초과하면 스트레이트 아스팔트와 석유수지의 양이 상대적으로 적어져 아스콘 층과의 접착력 저하가 우려된다.The emulsion is intended to be uniformly dispersed while emulsifying the straight asphalt. In the present invention, the composition is proposed to be composed of 95 to 99.9 wt% water, 0.05 to 3.0 wt% acid, and 0.05 to 3.0 wt% emulsifier. Here, the emulsifier may be used fatty acid salts (Fatty acid salts), sulfates (Sulphates), amine series, betaine (Betain), etc., but the amine series is the most emulsified and good stability. Acid is suitable to use 30 ~ 50% concentration of hydrochloric acid or acetic acid, which is convenient to purchase and handle, and it is used in an amount that can secure PH 1 ~ 4 for stability of emulsified asphalt. If the emulsion is less than 15 to 60% by weight, the amount of straight asphalt and petroleum resin is relatively high when the amount is less than 15% by weight, and the amount of straight asphalt and petroleum resin is higher than 60% by weight. It becomes less and fears the fall of the adhesive force with an ascon layer.
스트레이트 아스팔트는 실질적으로 아스콘층과의 접착력 발휘를 위한 것으로, AP-3, AP-5 등을 선택적으로 사용하면 적당하다. 스트레이트 아스팔트는 전체 유화아스팔트에서 30~80중량%가 적당한데, 30중량% 미만이면 유화아스팔트의 접착력 확보에 어려움이 있고, 80중량% 초과하면 유화액이 상대적으로 적어져 유화효과가 떨어진다.Straight asphalt is for exhibiting the adhesive force with an ascon layer substantially, and it is suitable to use AP-3, AP-5, etc. selectively. Straight asphalt is 30 ~ 80% by weight is suitable in the total emulsion asphalt, less than 30% by weight is difficult to secure the adhesive strength of the emulsion asphalt, if it exceeds 80% by weight the emulsion is relatively less emulsifying effect.
석유수지는 유화아스팔트의 연화점은 올리면서 침입도는 낮추어 점착성을 떨어뜨리기 위한 것으로, 연화점이 90~150℃인 것을 전체 유화아스팔트에서 5~25중량% 사용한다. 수지에는 석유수지 이외에 폴리에틸렌(PE), 폴리프로필렌(PP), 스틸렌 부타티엔 스틸렌(SBS), 에틸렌 비닐 아세테이트(EVA)등 다양하게 존재하나, 이들은 연화점을 올리기는 하나 석유수지만큼 침입도를 낮추지 못하고, 또는 유화가 잘되지 않아 적합하지 않은 것으로 평가되었다.The petroleum resin is used to lower the penetration by increasing the softening point of the emulsified asphalt and to lower the adhesiveness. 5 to 25 wt% of the softened point is used in the total emulsified asphalt. In addition to petroleum resins, there are various resins such as polyethylene (PE), polypropylene (PP), styrene butadiene styrene (SBS), and ethylene vinyl acetate (EVA). , Or emulsification was not good and was evaluated as not suitable.
석유수지는 나프타 등의 고온 열분해유 속에 존재하는 고급 불포화 탄화수소를 원료로 산성 촉매하에서 중합시켜 얻는 분자량 2,000 이하의 연한 황색 또는 흑갈색의 열가소성 수지인데, 본 발명에서는 연화점이 90~150℃인 것을 선별하여 사용한다. 연화점이 90℃ 미만이면 유화아스팔트의 점착력를 떨어뜨리는데 어려움이 있고, 150℃ 초과이면 유화가 힘들어져 유화아스팔트 생산이 어려워지는 문제점이 있다. 이와 같은 석유수지는, C9 유분을 원료로 한 석유수지, 또는 C5 유분을 원료로 한 지방족계와 C9 유분을 원료로 한 방향족계를 합성한 합성 석유수지를 채택하면 적당하다. Petroleum resin is a light yellow or dark brown thermoplastic resin having a molecular weight of 2,000 or less obtained by polymerizing a higher unsaturated hydrocarbon present in a high temperature pyrolysis oil such as naphtha under an acidic catalyst. In the present invention, the softening point is selected from 90 to 150 ° C. use. If the softening point is less than 90 ℃ has a difficulty in dropping the adhesive strength of the emulsified asphalt, if it exceeds 150 ℃ emulsification is difficult, there is a problem that the production of the emulsion asphalt becomes difficult. Such petroleum resin is suitable to adopt a petroleum resin composed of C9 fraction, or a synthetic petroleum resin composed of an aliphatic system composed of C5 fraction and an aromatic system based on C9 fraction.
한편 석유수지는 전체 유화아스팔트에서 5~25중량% 사용하는데, 5중량% 미만이면 석유수지에 의한 효과가 미미히고, 25중량% 초과하면 석유수지의 함량이 많아져 경제적이지 않다.
On the other hand, the petroleum resin is used 5 to 25% by weight in the total emulsified asphalt, less than 5% by weight of the effect of the petroleum resin is insignificant, if the content exceeds 25% by weight of the petroleum resin is not economical.
2. 유화아스팔트 제조방법2. Manufacturing method of emulsified asphalt
앞서 살펴본 유화아스팔트는 도 4와 같은 방법으로 바람직하게 제조할 수 있다. The above-mentioned emulsified asphalt may be preferably prepared by the same method as in FIG. 4.
먼저 제1혼합기에서 유화액을 만든다(제1단계). 유화액은 제1혼합기에 물을 담고, 이어 순서에 상관없이 산과 유화제를 투입한 후 20~70℃에서 10~120분간 교반하여 만든다. 20℃ 이하이면 산과 유화제가 물에 잘 풀리지 않고 교반시간이 길어지는 문제가 있고, 70℃ 이상이면 교반시간은 짧아지나 유화아스팔트 생산 후 생산된 유화아스팔트의 온도가 100℃가 넘어 물과 아스팔트가 분리되는 문제가 우려된다.First, an emulsion is made in the first mixer (first step). The emulsion is prepared by containing water in the first mixer, and then adding an acid and an emulsifier regardless of the order, and then stirring the solution at 20 to 70 ° C. for 10 to 120 minutes. If the temperature is below 20 ℃, the acid and emulsifiers are not easily dissolved in water, and the stirring time is long.If the temperature is above 70 ℃, the stirring time is shortened, but the temperature of the emulsion asphalt produced after the production of emulsion asphalt is over 100 ℃, and water and asphalt are separated. I am concerned about the problem.
다음으로 제2혼합기에서 스트레이트 아스팔트와 석유수지를 투입 교반한다. 130~180℃에서 10~120분간 교반하면 적당하다(제2단계). 130℃ 이하에서는 석유수지가 스트레이트 아스팔트에 잘 풀리지 않고 교반시간도 증가하며, 180℃ 이상에서는 석유수지가 스트레이트 아스팔트에 잘 풀리나 스트레이트 아스팔트의 물리적 변화를 발생할 수 있고 또한 온도를 올려주는 비용이 발생하여 경제적이지 않다.Next, straight asphalt and petroleum resin are added and stirred in the second mixer. It is suitable to stir for 10 to 120 minutes at 130 ~ 180 ℃ (second step). Below 130 ℃, the petroleum resin does not loosen well on the straight asphalt and the stirring time increases. Above 180 ℃, the petroleum resin loosens on the straight asphalt, but the physical change of the straight asphalt may occur. It is not
마지막으로 제3혼합기에 제1단계의 유화액과 제2단계의 교반액을 투입 혼합한다(제3단계). 도 4에서는 제1혼합기 및 제2혼합기와 각각의 파이프라인으로 연결된 제3혼합기를 이용하고 있는데, 이 경우 제1혼합기의 유화액과 제2혼합기의 교반액이 각각의 파이프라인을 따라 제3혼합기로 유입시켜 연속적으로 혼합하면 된다. 특히 각각의 파이프라인에는 펌프를 달아 펌프의 회전수를 조절하는 것으로 유입량을 적절히 조절할 수 있다. 아울러 제3혼합기는 통상의 유화아스팔트 제조에 사용하는 혼합기를 채택하면 되는데, 고속회전하는 두 판 사이로 각각의 재료를 투입하면서 순간적으로 유화액에 아스팔트가 분산되게 한다.
Finally, the emulsion of the first stage and the stirred solution of the second stage are added and mixed to the third mixer (third stage). In FIG. 4, a third mixer connected to the first mixer and the second mixer and each pipeline is used. In this case, the emulsion of the first mixer and the stirring solution of the second mixer are connected to the third mixer along each pipeline. It is good to let it flow in and to mix continuously. In particular, each pipeline is equipped with a pump to adjust the rotational speed of the pump to properly control the flow rate. In addition, the third mixer may adopt a mixer used in the manufacture of a conventional emulsion asphalt, in which the asphalt is instantaneously dispersed in the emulsion while putting each material between two plates rotating at high speed.
이하에서는 실시예와 실험예에 의거하여 본 발명에 따른 유화아스팔트의 점착성을 살펴본다. 다만, 하기의 실시예와 실험예는 본 발명을 예시하기 위한 것일 뿐이며, 본 발명의 범위가 이로써 한정되는 것은 아니다.
Hereinafter, look at the adhesiveness of the emulsified asphalt according to the present invention based on the Examples and Experimental Examples. However, the following Examples and Experimental Examples are only for illustrating the present invention, and the scope of the present invention is not limited thereto.
[실시예] 유화아스팔트의 제조EXAMPLES Preparation of Emulsified Asphalt
(1)먼저 하기 [표 1]에 따른 조성으로 각 재료를 준비하였다.(1) First, each material was prepared by the composition according to the following [Table 1].
(2)이어 제1혼합기에 물, 산, 유화제를 투입하고 50~60℃에서 30분간 교반하여 유화액을 만드는 한편, 제2혼합기에 스트레이트 아스팔트와 석유수지를 투입하고 150~160℃에서 30분간 교반한다.(2) Then, water, acid and emulsifier were added to the first mixer and stirred at 50 to 60 ° C. for 30 minutes to form an emulsion, while straight asphalt and petroleum resin were added to the second mixer and stirred at 150 to 160 ° C. for 30 minutes. do.
(3)마지막으로 제1혼합기 및 제2혼합기와 각각의 파이프라인으로 연결된 제3혼합기로 제1혼합기의 유화액과 제2혼합기의 교반액을 유입시켜 연속적으로 혼합한다.(3) Finally, the emulsion of the first mixer and the stirring solution of the second mixer are introduced into the third mixer connected to the first and second mixers and the respective pipelines and mixed continuously.
(4)이로써 본 발명에 따른 유화아스팔트가 제조된다.
(4) This produces the emulsion asphalt according to the present invention.
[실험예][Experimental Example]
상기 [실시예]에 따라 제작된 유화아스팔트의 점착성 대해 실험하였으며, 시중에서 판매되는 유화아스팔트 RSC-4와 비교하여 실험하였다.The adhesiveness of the emulsion asphalt prepared according to the above [Example] was tested and compared with the commercially available emulsified asphalt RSC-4.
1. 실험실 실험1. Laboratory experiment
도 1과 같은 실험 조건에서 실험하였다. 즉 석면 패킹 위에 유화아스팔트를 바른 후 양생하고, 양생된 유화아스팔트 위에 고무판을 깔고 일정한 하중으로 롤러를 주행한 후 고무판을 때어내었다. 덤프트럭의 타이어를 고무판으로 모사한 것이다.Experiment under the same experimental conditions as FIG. In other words, after curing the emulsion asphalt on the asbestos packing, the rubber plate was laid on the cured emulsion asphalt, and the roller was run under a constant load, and then the rubber plate was removed. The tires of the dump truck are simulated with rubber plates.
실험 결과 하기 [표 2], 도 2a(본 발명에 따른 유화아스팔트), 도 2b(RSC-4)와 같이 나타냈다. Experimental Results As shown in Table 2, Figure 2a (emulsified asphalt according to the present invention), Figure 2b (RSC-4).
보는 바와 같이 본 발명에 따른 유화아스팔트가 종래 RSC-4보다 고무판에 적게 묻어나는 것을 알 수 있으며, 고무판에 적게 묻는다는 것은 곧 덤프트럭의 주행시 타이어에 적게 묻어날 것을 의미하는바 본 발명에 따른 유화아스팔트는 낮은 점착성을 나타낸다고 할 수 있다.
As can be seen it can be seen that the emulsified asphalt according to the present invention is less buried in the rubber plate than the conventional RSC-4, and less buried in the rubber plate means that less emulsified in the tire during the running of the dump truck, the emulsified asphalt according to the present invention Can be said to exhibit low adhesiveness.
2. 현장 실험2. Field experiment
상기 실험실 결과를 토대로 실제 현장에서 동일한 시료로 실험을 수행하였다. 서울시 서부간선도로 시공 현장에 유화아스팔트를 포설, 양생 후 덤프트럭을 주행한 것이다. 그 결과 도 3a(본 발명에 따른 유화아스팔트) 및 도 3b(RSC-4)와 같이 나타났는데, 보는 바와 같이 도 3b(RSC-4)에서는 덤프트럭의 주행에 따라 유화아스팔트의 손실이 크게 있었으나, 도 3a(본 발명에 따른 유화아스팔트)에서는 유화아스팔트의 손실이 거의 일어나지 않았다.
Based on the laboratory results, the experiment was performed with the same sample in the actual field. The dump truck was run after curing oil painting asphalt on the construction site of Seobu Expressway in Seoul. As a result, as shown in Figure 3a (emulsified asphalt according to the present invention) and Figure 3b (RSC-4), as shown in Figure 3b (RSC-4), as shown in Figure 3b (RSC-4) there was a large loss of the emulsion asphalt as the dump truck runs, In FIG. 3A (emulsified asphalt according to the present invention), the loss of the emulsified asphalt hardly occurred.
상기와 같은 결과에 따라 본 발명에 따른 유화아스팔트는 종래의 것보다 점착성이 낮기 때문에 아스콘 도로포장 과정에서 덤프트럭의 주행에 따른 손실을 줄일 수 있어 아스콘 층 상호간의 결합에 효과적으로 작용할 것으로 기대된다.According to the above results, the emulsion asphalt according to the present invention is expected to act effectively on the bonding between the asphalt concrete layers as it can reduce the loss caused by the driving of the dump truck during the asphalt road paving process because the adhesiveness is lower than the conventional one.
Claims (5)
스트레이트 아스팔트 30~80중량%;
연화점이 90~150℃인 석유수지 5~25중량%;
로 구성되는 것을 특징으로 하는 비점착성 유화아스팔트 조성물.15 to 60% by weight of an emulsion composed of 95 to 99.9% by weight of water, 0.05 to 3.0% by weight of acid, and 0.05 to 3.0% by weight of emulsifier;
Straight asphalt 30 to 80% by weight;
5 to 25% by weight of petroleum resin having a softening point of 90 to 150 ℃;
Non-adhesive emulsified asphalt composition, characterized in that consisting of.
상기 석유수지는,
C9 유분을 원료로 한 석유수지이거나,
C5 유분을 원료로 한 지방족계와 C9 유분을 원료로 한 방향족계를 합성한 합성 석유수지인 것을 특징으로 하는 비점착성 유화아스팔트 조성물.In claim 1,
The petroleum resin,
Petroleum resin based on C9 oil
A non-tacky emulsified asphalt composition comprising a synthetic petroleum resin obtained by synthesizing an aliphatic system based on a C5 fraction and an aromatic system based on a C9 fraction.
상기 유화액의 산은, 30~50% 농도의 염산 또는 초산인 것을 특징으로 하는 비점착성 유화아스팔트 조성물.3. The method according to claim 1 or 2,
The acid of the emulsion is a non-adhesive emulsion asphalt composition, characterized in that the hydrochloric acid or acetic acid at a concentration of 30 to 50%.
제1혼합기에 물, 산, 유화제를 투입하고 20~70℃에서 10~120분간 교반하여 유화액을 만드는 제1단계;
제2혼합기에 스트레이트 아스팔트와 석유수지를 투입하고 130~180℃에서 10~120분간 교반하는 제2단계;
제3혼합기에 제1단계의 유화액과 제2단계의 교반액을 투입 혼합하는 제3단계;
로 이루어지는 것을 특징으로 하는 비점착성 유화아스팔트의 제조방법.A method for producing an emulsion asphalt using the emulsion asphalt composition according to claim 1 or 2,
Adding a water, an acid, and an emulsifier to the first mixer and stirring the mixture at 20 to 70 minutes for 10 to 120 minutes to form an emulsion;
A second step of adding straight asphalt and petroleum resin to a second mixer and stirring at 130 to 180 ° C. for 10 to 120 minutes;
A third step of adding and mixing the emulsion of the first step and the stirring solution of the second step into the third mixer;
Method for producing a non-adhesive emulsion asphalt, characterized in that consisting of.
상기 제3단계는, 제1혼합기 및 제2혼합기와 각각의 파이프라인으로 연결된 제3혼합기를 이용하면서 이루어지되, 제1혼합기의 유화액과 제2혼합기의 교반액이 각각의 파이프라인을 따라 제3혼합기로 유입되어 연속적으로 혼합되도록 이루어지는 것을 특징으로 하는 비점착성 유화아스팔트의 제조방법.5. The method of claim 4,
The third step is performed by using a third mixer connected to each pipeline by a first mixer and a second mixer, wherein an emulsion of the first mixer and a stirring solution of the second mixer are along the respective pipelines. Method for producing a non-adhesive emulsion asphalt, characterized in that the mixture is introduced into the mixer to be continuously mixed.
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