The effects of bar deformation properties on bond of steel reinforcing bars to concrete are experimentally studied to predict the lap splice strength. Based on the previous research about high relative rib area, lap splice strength of reinforcing bars can be improved by the control of rib height and spacing. This paper describes the testing and analysis of 28 beam-spliced specimens containing D32, D29, D25, D22, D19 with relative rib areas ranging from 0.060 to 0.162. The tests are analyzed to determine the effect of relative rib area(Rr) on the increase in lap splice strength. The tests also provide a preliminary indication of the effects of high relative rib area on the splice strength of uncoated bars
목차
Abstract 1. 서론 2. 기존 연구 고찰 3. 상대마디면적의 정의 4. 실험 계획, 방법 및 결과 분석 4.1 실험 계획 4.2 시험체 제작 및 실험 방법 4.3 모멘트-처짐각 곡선 4.4 파괴 및 균열 양상 4.5 부착응력-상대마디면적 곡선 5. 변수별 부착응력 분석 6. 결론 참고문헌