PURPOSES : This paper presents the experimental results of tests conducted on concrete produced with air-cooled (AS) and water-cooled (WS) ground blast-furnace slag exposed to multi-deterioration environments of carbonation and scaling.
METHODS : Carbonated and uncarbonated concrete specimens were regularly monitored according to the ASTM C 672 standard to evaluate the durability of concrete exposed to both scaling and combined carbonation and scaling conditions. Additionally, mechanical properties, such as compressive strength, flexural strength, and surface electric resistivity, were analyzed. RESULTS : It was found that concrete specimens produced with AS and WS had a beneficial effect on the mechanical properties because of the latent hydraulic properties of the AS and WS mineral admixtures. Moreover, carbonated concrete showed good scaling resistance in comparison to uncarbonated concrete, particularly for concrete produced with AS and WS. CONCLUSIONS : The improved scaling resistance of carbonated concrete showed that AS is a suitable option for binders used in cement concrete pavements subjected to combined carbonation and scaling.

ABSTRACT
1. 연구의 배경 및 목적
2. 실험개요
    2.1. 사용재료
    2.2. 콘크리트 배합
    2.3. 실험방법
3. 실험결과 및 고찰
    3.1. 콘크리트의 강도특성
    3.2. 콘크리트의 표면전기저항성
    3.3. 콘크리트의 탄산화 침투깊이
    3.4. 콘크리트의 스케일링 저항성
    3.5. 콘크리트의 탄산화-스케일링 복합열화 저항성
    3.6. 콘크리트의 스케일링 저항성에 대한 탄산화의 영향
4. 결론 및 요약
REFERENCES

• 박세호(군산대학교 토목공학과) | Park Se-Ho
• 이승태(군산대학교 토목공학과) | Lee Seung-Tae 교신저자
• 정재홍(군산대학교 토목공학과) | Jeong Jae-Hong