This study experimentally evaluated the flexural behavior of reinforced concrete (RC) beams incorporating a high-performance cementitious composite (VC) with 1.0 vol.% Vectran fibers. Three-point bending tests were conducted on a reference high-strength concrete beam (RCB) and two VC beams (VCB-1, VCB-2). Compared with RCB, the maximum load increased by +19.8% (VCB-1) and +9.0% (VCB-2), while the yield load rose by +18.9% and +16.0%, respectively. The ductility index (Δu/Δy) improved from 1.89 (RCB) to 5.22 (VCB-1), confirming the crack control effect based on multiple micro-cracking. The improved performance indicates not only enhanced flexural capacity and ductility but also suggests the potential for carbon-neutral structural design through material reduction and service-life extension enabled by the Vectran fiber-reinforced composite system.

Abstract
1. 서론
2. 구조실험
    2.1 재료특성 및 제조배합 결정
    2.2 실험 계획 및 실험체 제작
    2.3 가력 및 측정 상세
3. 실험 결과
    3.1 극한하중 재하 실험 결과
    3.2 균열 및 파괴 양상
    3.3 VC적용에 따른 탄소배출 저감 효과 분석
4. 결론
감사의 글
References

• 문형주(동신대학교 RISE사업단 글로벌지역특화인재양성센터 조교수, 공학박사) | Moon Hyung-Joo (Jeollannamdo RISE center, Dongshin University)
• 양일승(동신대학교 건축학과 교수, 공학박사) | Yang Il-Seung (Dept. of Architecture, Dongshin University)
• 조창근(조선대학교 건축공학과 교수, 공학박사) | Cho Chang-geun (School of Architecture, Chosun University) Corresponding author