鐵筋콘크리트 보의 補修-補强에 따른 構造的 特性에 관한 實驗的 硏究

다국어 초록 (Multilingual Abstract)

This paper is an experimental research on structural characteristics according to repair-restrengthening of reinforced concrete, attaches reinforcement materials to test specimen and conducts the experiment with main parameters such as restrengthening period and length and method and kind of reinforcement materials. This study is to examine the restrengthening effect and structural characteristics by each parameter and to provide the masic data which can be applied to the repair-restrengthening design and construction of the structure which has a damage. To evaluate the structural characteristics of test specimen restrengthened against bending, total of 12 specimen are produced and the results from the test are as follows:
1. The specimen with restrengthening in loading showed the higest increase of ductility and yield strength due to the full repair by the maintenance of crack width and a minute effect by curing conditions after restrengthening.
Therefore it is judged that the effect by elastic behavior to concrete must be considered in repair-restrengthening design.
2. It is shown that the effect by separation and adhesion ability of reinforcement materials was greater than restrengthening length. Accordingly, to improve the restrengthening performance, test specimen and reinforcement materials should be united and enough bonded performance should be secured to make ductile behavior possible.
3. The test specimen with laminate angle restrengthening showed the highest restrengthening effect, but in case of anchor bolt restrengthening, it is difficult to expect the restrengthening effect due to brittle flaking by the damage of reinforcement materials. Therefore, it is judged that when the reinforcement materials don't secure rigidity, the restrengthening method which gives a damage to reinforcement materials is not suitable.
4. Most of the test specimen restrengthened don's increase yield strength by the repair because the repair is not enough due to little damage by loading and reduction of crack width. Therefore, it is judged more suitable that repair-restrengthening is made after increasing the degree of damage by giving over 75% of the maximum yield strength or it is done in the condition that the crack width is not narrowed by the elastic behavior of concrete.
5. It is found that excellent restrengthening effect was obtained by securing the restrengthening effect with the highest restrengthening of steel plate and rigidity, but carbon fiber plate didn't obtain a high restrengthening effect due to the lack of adhesion before it reaches the expected maximum yield strength and the spearation of reinforcement materials. However, when constructional aspects and the characteristics of materials are compared, it is judged that it is a very excellent reinforcement material.

목차 (Table of Contents)

• 목차 = ⅰ
• ABSTRACT = ⅷ
• 記號 = ⅹ
• Ⅰ. 서론 = 1
• A. 연구의 목적 및 의의 = 1
• B. 연구의 기본방향 = 2
• C. 기존 연구의 동향 = 2
• 1. 국외 보수 - 보강 연구현황 = 2
• a. 국외 보수재료의 연구동향 = 2
• b. 국외 보수공법의 연구동향 = 3
• c. 국외 보강재료 및 보강공법 현황 = 4
• 2. 국내 보수 - 보강 연구현황 = 6
• a. 국내 보수재료 및 보수공법 연구현황 = 6
• b. 국내 보강재료 및 보강공법 연구현황 = 7
• Ⅱ. 이론적 고찰 = 9
• A. 보수 - 보강 재료 = 9
• 1. 보수재료 = 9
• a. 수지계 결합재 = 9
• b. 폴리머계 혼화재 = 10
• 2. 보강재료 = 11
• B. 물리적 특성 = 12
• 1. 수지계 결합재 = 12
• a. 종류 = 12
• b. 선택기준 및 성질 = 12
• 2. 폴리머계 혼화재 = 14
• a. 종류 = 14
• b. 선택기준 및 성질 = 15
• C. 보수 - 보강 방법 = 16
• 1. 보수공법 = 16
• a. 표면처리공법 = 16
• b. 주입공법 = 16
• c. 충전공법 = 17
• d. 치환공법 = 19
• e. 기타공법 = 19
• 2. 보강공법 = 20
• a. 강판공법 = 20
• b. 탄소섬유쉬트공법 = 22
• c. 탄소섬유판 접착공법 = 26
• Ⅲ. 실험계획 및 방법 = 27
• A. 실험의 개요 = 27
• B. 시험체의 설계 = 28
• 1. 사용재료 = 28
• a. 콘크리트 = 28
• b. 철근 = 29
• c. 보수 - 보강 재료 = 30
• 2. 실험변수 = 31
• C. 시험체의 제작 = 33
• D. 실험방법 = 33
• Ⅳ. 실험결과 및 고찰 = 37
• A. 실험결과 = 37
• 1. 시험체의 파괴형태 = 37
• a. BNO-01 시험체 = 37
• b. BNO-02 시험체 = 38
• c. BL1-90 시험체 = 38
• d. BL2-90 시험체 = 38
• e. BL3-90 시험체 = 39
• f. BL3-70 시험체 = 39
• g. BL3-50 시험체 = 40
• h. BL3-AG 시험체 = 40
• i. BL3-AC 시험체 = 41
• j. BE3-90 시험체 = 41
• k. BS3-90 시험체 = 42
• l. BP3-90 시험체 = 42
• 2. 휨보강 시험체의 보강효과 = 45
• B. 시험체의 보강효과 = 51
• 1. 보강시기에 따른 보강효과 = 51
• 2. 보강길이에 따른 보강효과 = 53
• 3. 보강재의 보강방법에 따른 보강효과 = 56
• 4. 보강재의 종류에 따른 보강효과 = 58
• C. 보강시험체의 연성능력 = 60
• Ⅴ. 결론 = 67
• 參考文獻 = 69
• 부록 = 72