A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ASPHALT CONCRETE COMPOSITION INCLUDING SBS AND MENUFACTURING METHOD THEREOF
An asphalt composition mixed with a dry-type modifying additive according to the present invention comprises: 92-95 wt% of aggregate; and 5-8 wt% of an asphalt binder, wherein 12-13 parts by weight of a dispersibility-improving dry-type modifying additive is used in place of the asphalt binder, with respect to 100 parts by weight of the asphalt binder. At this time, the dispersibility-improving dry-type modifying additive to be mixed is added when the composition is mixed in a pug mill mixer rather than being mixed in a binder preparing process. The modifying additive mixed in the present invention preferably contains, with respect to 100 parts by weight of the modifying additive, 55-65 parts by weight of an SBS modifier, 15-25 parts by weight of a petroleum resin, 2.3-2.9 parts by weight of cellulose fiber, 15-19 parts by weight of process oil, and 0.3-0.5 parts by weight of an antioxidant, wherein in the SBS modifier to be mixed, a linear-type SBS modifier and a radial-type (branching-type) SBS modifier may be mixed at a ratio of 1:1.2-1:1.5. According to the present invention, a modifier is put into a pug mill mixer and then mixed with aggregate and binder, and thus, the time required for manufacturing asphalt concrete can be shortened and high-quality asphalt concrete can be obtained.
본 발명에 따른 건식형 개질첨가제가 혼합된 아스팔트 조성물은 골재 92 ~ 95 중량%; 아스팔트 바인더 5 ~ 8 중량%;를 포함하되, 아스팔트 바인더의 중량 100을 기준으로, 분산성 향상 건식형 개질첨가제가 12~13 중량부;가 아스팔트 바인더로 대체된다. 이때 혼합되는 분산성 향상 건식형 개질첨가제는 바인더 제조 과정에 혼합되는 것이 아니라 퍼그밀 믹서에서 조성물이 배합될 때 혼합되는 특징이 있다. 본 발명에 혼합되는 개질첨가제는 개질첨가제의 중량 100을 기준으로, SBS 개질재 55~65 중량부; 석유수지 15~25 중량부; 셀룰로오스 섬유 2.3~2.9 중량부; 프로세스 오일 15~ 19 중량부; 산화방지제 0.3~0.5 중량부;를 포함하는 것이 바람직하다. 이때 혼합되는 SBS 개질재는 리니어 타입(선형)의 SBS 개질재와 레디얼 타입(가지형)의 SBS 개질가 1 : 1.2 ~ 1 : 1.5 의 비율로 혼합될 수 있다.
ASPHALT CONCRETE COMPOSITION INCLUDING SBS AND MENUFACTURING METHOD THEREOF
An asphalt composition mixed with a dry-type modifying additive according to the present invention comprises: 92-95 wt% of aggregate; and 5-8 wt% of an asphalt binder, wherein 12-13 parts by weight of a dispersibility-improving dry-type modifying additive is used in place of the asphalt binder, with respect to 100 parts by weight of the asphalt binder. At this time, the dispersibility-improving dry-type modifying additive to be mixed is added when the composition is mixed in a pug mill mixer rather than being mixed in a binder preparing process. The modifying additive mixed in the present invention preferably contains, with respect to 100 parts by weight of the modifying additive, 55-65 parts by weight of an SBS modifier, 15-25 parts by weight of a petroleum resin, 2.3-2.9 parts by weight of cellulose fiber, 15-19 parts by weight of process oil, and 0.3-0.5 parts by weight of an antioxidant, wherein in the SBS modifier to be mixed, a linear-type SBS modifier and a radial-type (branching-type) SBS modifier may be mixed at a ratio of 1:1.2-1:1.5. According to the present invention, a modifier is put into a pug mill mixer and then mixed with aggregate and binder, and thus, the time required for manufacturing asphalt concrete can be shortened and high-quality asphalt concrete can be obtained.
본 발명에 따른 건식형 개질첨가제가 혼합된 아스팔트 조성물은 골재 92 ~ 95 중량%; 아스팔트 바인더 5 ~ 8 중량%;를 포함하되, 아스팔트 바인더의 중량 100을 기준으로, 분산성 향상 건식형 개질첨가제가 12~13 중량부;가 아스팔트 바인더로 대체된다. 이때 혼합되는 분산성 향상 건식형 개질첨가제는 바인더 제조 과정에 혼합되는 것이 아니라 퍼그밀 믹서에서 조성물이 배합될 때 혼합되는 특징이 있다. 본 발명에 혼합되는 개질첨가제는 개질첨가제의 중량 100을 기준으로, SBS 개질재 55~65 중량부; 석유수지 15~25 중량부; 셀룰로오스 섬유 2.3~2.9 중량부; 프로세스 오일 15~ 19 중량부; 산화방지제 0.3~0.5 중량부;를 포함하는 것이 바람직하다. 이때 혼합되는 SBS 개질재는 리니어 타입(선형)의 SBS 개질재와 레디얼 타입(가지형)의 SBS 개질가 1 : 1.2 ~ 1 : 1.5 의 비율로 혼합될 수 있다.
ASPHALT CONCRETE COMPOSITION INCLUDING SBS AND MENUFACTURING METHOD THEREOF
건식형 개질첨가제가 혼합된 아스팔트 콘크리트 조성물 및 그 제조방법
YANG SUNG LIN (author) / PARK HEE BEOM (author) / KIM YEON TAE (author)
2023-01-19
Patent
Electronic Resource
Korean
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