In this study, the mechanical property and durability of improved bond performance mortar shotcrete was investigated. Mortar shotcrete was prepared by replacing coarse aggregate with 100% fine aggregate in the shotcrete mixture proportion proposed in the road construction standard specification. OPC, GGBFS and anhydrite were used as binders, and polymer powder was substituted for 1% and 2% of binder for improving bond property. From the experimental results, it was found that the compressive strength decreased with increasing polymer addition, but the bond strength increased. The addition of polymer to mortar shotcrete also reduced the drying shrinkage and improved the resistance to carbonation. Initial hydration heat of mortar shotcrete decreased with the addition of polymer, and it was judged that the initial compressive strength decreased.

Abstract
1. 서 론
2. 실험 계획 및 방법
    2.1 재료
    2.2 배합비
    2.3 실험 방법
3. 실험 결과 및 분석
    3.1 역학적 특성
    3.2 유동성
    3.3 건조수축
    3.4 탄산화
    3.5 등온선 열량측정법
4. 결 론
References

• 박병선(한국건설생활환경시험연구원 건설기술연구센터) | Byoungsun Park
• 장건영(한국건설생활환경시험연구원 건설기술연구센터) | Kun Young Jang
• 최영철(가천대학교 토목환경공학과) | Young Cheol Choi Corresponding author