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긴급보수용 개질 유화아스팔트 고비율 순환골재를 사용한 상온 아스팔트 혼합물의 성능 평가 KCI 등재

Performance Evaluation of High-RAP Asphalt Mixtures using Rapid-Setting Polymer-Modified Asphalt Emulsion

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한국도로학회논문집 (International journal of highway engineering)
한국도로학회 (Korean Society of Road Engineers)
초록

PURPOSES : The purpose of this study was to evaluate the performance of rapid-setting polymer-modified asphalt mixtures with a high reclaimed asphalt pavement (RAP) content.
METHODS: A literature review revealed that emulsified asphalt is actively used for cold-recycled pavement. First, two types of rapid-setting polymer-modified asphalt emulsion were prepared for application to high-RAP material with no virgin material content. The quick-setting polymer-modified asphalt mixtures using two types of rapid-setting polymer-modified asphalt emulsion were subjected to the following tests: 1) Marshall stability test, 2) water immersion stability test and 3) indirect tensile strength ratio test.
RESULTS AND CONCLUSIONS : Additional re-calibration of the RAP was needed for laboratory verification because the results of analyzing RAP aggregates, which were collected from different job sites, did not deviate from the normal range. The Marshall stability of each type of binder under dry conditions was good. However, the Type B mixtures with bio-additives performed better in the water immersion stability test. Moreover, the overall results of the indirect tensile strength test of RAP mixtures with Type B emulsions exceeded 0.7. Further research, consisting of lab testing and on-site application, will be performed to verify the possibility of using RAP for minimizing the closing of roadways.

저자
  • 권봉주((주)오에이티엠엔씨 연구개발 팀장) | Kwon, Bong Ju
  • 허재민((주)오에이티엠엔씨 연구개발 과장) | Heo, Jae Min
  • 한용진(경희대학교 공과대학 도로연구실 박사과정) | Han, Yong Jin
  • 이석근(경희대학교 공과대학 사회기반시스템공학과 교수) | Rhee, Suk Keun 교신저자