This study aims to empirically investigate the evolution of conservation principles for Korean architectural heritage— transitioning from customary formal reconstruction to value-based conservation centered on the ‘Historic State’—by analyzing the twenty-year conservation process of the Stone Pagoda at the Mireuksa Temple Site in Iksan (1999–2019). It specifically examines how international conservation discourses were negotiated and optimized within the specific context of the Korean repair environment to secure ‘Authenticity’. The major findings are as follows. First, a philosophical shift toward the conservation of the ‘Historic State’ was realized by excluding the conjectural reconstruction of the ninth story and opting for partial repair up to the remaining sixth story. This approach embraced the cumulative layers of damage as an integral part of the monument's authentic history. Second, the ‘authenticity of material’ was maximized by increasing the reuse rate of original stone members to 47% to 81% and selectively integrating reversible modern technologies to ensure structural stability. Third, the ‘authenticity of process and record’ was established through a multidisciplinary decision-making framework and transparent documentation of the entire two-decade conservation project. In conclusion, the conservation of the Mireuksa Stone Pagoda is a monumental achievement that established practical conservation principles by optimizing international norms to fit local conditions. The derived principles align with the ‘Korean Principles for the Conservation of Heritage Values (2022)’ and will serve as an academic benchmark for sustainable architectural heritage conservation and authenticity assessment under the ‘National Heritage Framework (2024)’.

ABSTRACT
1. 서 론
    1-1. 연구 배경 및 목적
    1-2. 연구 방법 및 내용
    1-3. 선행 연구 검토
2. 보존 철학의 변천과 진정성 개념의 확장
    2-1. 국제적 보존 철학의 전개 : 고대-현대 이론의 정립
    2-2. 국제 보존 규범의 확립과 진정성 개념의 심화
    2-3. 한국적 보존 철학의 전개와 원형 개념의 형성
3. 보존 원칙의 적용과 국내·외 사례 고찰
    3-1. 국외 건축문화유산 보존 철학의 전개와 실천
    3-2. 국내 건축문화유산의 수리 규범의 도입과 전개
    3-3. 소결 : 보존 사례의 시사점
4. 미륵사지 석탑 보수정비 원칙의 수립과 실천
    4.1. 미륵사지 석탑의 역사적 변천과 고고학적 가치 재발견
    4-2. 보수정비 방향 설정과 원칙의 수립 과정
    4-3. 보수정비 원칙의 실천과 성과
5. 미륵사지 석탑 보수정비의 학술적 의의
    5-1. 관념적 형태 복원에서 역사적 원형 보존으로의 전환
    5-2. 다학제적 의사 결정 체계의 확립
    5-3. 기록의 진정성 확보와 사회적 가치 공유
6. 결론
참고문헌

• 오정현(영남대학교 건축학과 박사수료, 국립문화유산연구원 건축문화유산연구실 연구원) | Oh Jung-Hyun
• 이우종(영남대학교 건축학부 교수, 공학박사) | Lee Woo-Jong (Department of Architecture, Yeungnam University.) Corresponding author