후크형 강섬유를 혼입한 데크플레이트 슬래브의 사용성 및 구조적 성능 평가 = Evaluation on the structural performance and serviceability of deck-plate slab reinforced with hook-ended steel fiber

다국어 초록 (Multilingual Abstract)

Reinforced concrete has advantages in that it is excellent in durability, easy to supply as a generalized material, and low unit price. However, since the reinforced concrete structure has a comparatively long construction period, it has a disadvantage of causing an increase in the construction cost of several items including labor costs. In the case of a reinforced concrete building, the area occupied by the slab is greatly large, but the size of the load borne by the structural member is relatively small, rather the problem is known as a crack aspect of Usability. Therefore, for reducing construction process duration which directly affect construction period such as slab form-work and reinforcing bar, this study will try to develop a composite slab incorporating the structural deck plate and the hook-ended steel fiber. In this paper, we evaluated the usability and structural performance of reinforced concrete slab as control group and deck-plate slab reinforced steel-fiber as experimental group. Experimental results showed that deflection and crack of experimental group in long-term behavior and dry-shrinkage cracks in curing at early age appeared to be superior, and even experiments on structural performance had better bending strength and rigidity than the control group. These performances are considered that there is a correlation with the difference in section property such as tensile force and moment of inertia of the experimental group. However, for comprehensive analysis, the unit cost of hook-ended steel fiber and structural deck-plate is higher than of rebar, so correction of indicators such as economic feasibility should be considered.

목차 (Table of Contents)

• Ⅰ. 서 론 1
• 1. 연구 배경 및 목적 1
• 2. 연구 내용 및 방법 3
• Ⅱ. 기존 연구 고찰 6
• 1. 관련 연구 동향 6
• 가. 강섬유 6
• 나. 데크플레이트 8
• 2. 선행 연구 분석 10
• Ⅲ. 실험 계획 12
• 1. 실험 개요 12
• 2. 사용 재료 14
• 가. 후크형 강섬유 14
• 나. 구조용 데크플레이트 15
• 다. 콘크리트 16
• 3. 실험체 제작 17
• 4. 실험 방법 21
• Ⅳ. 실험결과 및 분석 26
• 1. 초기 건조수축 균열 26
• 2. 장기 거동 실험 34
• 가. 균열 34
• 나. 처짐 39
• 3. 구조 성능 43
• 가. 휨 내력 43
• 나. 강성 및 처짐 44
• 다. 휨 균열 46
• Ⅴ. 결 론 54
• 참고문헌 56
• ABSTRACT 58
• 부 록 60