A study to apply phase change material(PCM) to rapid hardening cement paste forming semi-rigid pavement was carried out. The characteristics fresh and hardened paste were evaluated through the experiment for a total of 6 mixtures according to the cement type and the substitution of phase change material for acrylate. The fluidity by substituting phase change material for acrylate satisfied the target flow time of 10 to 13 seconds. In case of setting time, it was possible to secure the performance of rapid hardening cement by substituting phase change material, and if the substitution ratio over 60%, the initial set occurred 1 to 2 minutes faster than other mixtures. In case of compressive strength and bond strength, it showed similar strength characteristics with the plain mixture, and it satisfied both the target compressive and bonding strength of 36MPa and 2MPa. The mixture substituting phase change material showed higher resistance to chloride ion penetration than the mixture only using acrylate and the OPC level was insufficient. From the results of physical and mechanical performances of semi-rigid pavement cement paste, the phase change material substitution rate of 20% was effective in the range of this study.

1. 서 론
 2. 실험계획 및 방법
  2.1 실험요인 및 배합
  2.2 사용재료
  2.3 시험방법
 3. 시험 결과 및 고찰
  3.1 유동특성
  3.2 응결시간
  3.3 강도특성
  3.4 부착강도
  3.5 염소이온침투저항성
  3.6 수화열 특성
 4. 결 론
 감사의 글
 References

• 김성수(충남대학교 토목공학과 박사과정) | Seung-Su Kim
• 이병재((주)제이엔티아이엔씨 기술연구소 선임연구원) | Byung-Jae Lee
• 방진욱(충남대학교 토목공학과 박사후연구원) | Jin-Wook Bang
• 김윤용(충남대학교 토목공학과 교수) | Yun-Yong Kim 교신저자