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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국농공학회 한국농공학회논문집 한국농공학회논문집 제62권 제3호
발행연도
2020.1
수록면
29 - 38 (10page)

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Since some warm-mix asphalt (WMA) concretes were known to show poorer rut resistance than the hot-mix asphalt (HMA) concretes, many studieswere performed in efforts of improving its performance at high temperature. The reason is assumed to be due to the moisture remaining in aggregatesdried at lower temperature. Therefore, not only the rut resistance, the crack resistance of WMA concrete was also in question. In this study, fatiguelife of WMA concrete was evaluated in comparison with HMA using 3-point bending (3PB) beam test. The asphalt mixtures were prepared based onKorean mix-design guide using a 13 mm dense-graded aggregate and 6 binders; two HMA binders and four WMA binders. By 3PB fatigue test, normal(unmodified) and polymer-modified WMA concretes were evaluated in comparison with normal and polymer-modified HMA concretes at a lowtemperature (-5oC). The results showed that most of WMA concretes showed longer fatigue lives than HMA concretes, even though the same PGbinders were used for HMA and WMA. This result indicates that the WMA concretes have stronger resistance against fatigue cracking than HMA atthe low temperature, and this result is in contrast to the high-temperature performance test.

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