The mechanical properties and microstructures of hexagonal boron nitride (h-BN)-reinforced cement composites are experimentally studied for three and seven curing days. Various sizes (5, 10, and 18 μm) and concentrations (0.1%, 0.25%, 0.5%, and 1.0%) of h-BN are dispersed by the tip ultrasonication method in water and incorporated into the cement composite. The compressive strength of the h-BN reinforced cements increases by 40.9%, when 0.5 wt% of 18 μm-sized h-BN is added. However, the compressive strength decreases when the 1.0 wt% cement composite is added, owing to the aggregation of the h-BNs in the cement composite. The microstructural characterization of the h-BN-reinforced cement composite indicates that the h-BNs act as bridges connecting the cracks, resulting in improved mechanical properties for the reinforced cement composite.

Abstract
1. 서 론
2. 실험방법
    2.1 사용재료
    2.2 시험체 제작
    2.3 압축강도 시험 및 분석
3. 결과 및 고찰
4. 결 론
References

• 최요민(한국산업기술시험원 재료기술센터) | Yomin Choi (Material Technology Center, Korea Testing Laboratory)
• 신현규(한국산업기술시험원 재료기술센터) | Hyun‐Gyoo Shin (Material Technology Center, Korea Testing Laboratory) Corresponding Author