표제지
감사의 글
목차
Abstract 10
연구사 11
I. 서론 12
1. 연구배경과 목적 12
2. 연구 동향 13
3. 연구 범위와 방법 18
II. 콘크리트 비파괴 검사 기기 및 원리 19
1. 반발경도 실험 20
2. 탄성파 측정 실험 26
3. 열화상 측정 실험 33
III. 콘크리트 벽체 공동 측정 53
1. 콘크리트 벽체 및 인공 공동 제작 53
2. 반발경도법 56
3. 탄성파 측정법에 콘크리트 공동 측정 65
4. 열화상 카메라를 이용한 측정 70
IV. 결론 75
References 76
Table 1. Infrared radiation 34
Table 2. Compressive strength test result(depth:3cm) 57
Table 3. Compressive strength test result(depth:6cm) 59
Table 4. Compressive strength test result(depth:9cm) 61
Table 5. Elastic wave arrival times 66
Table 6. Variable thermo temperature according to measure points 71
Table 7. Variable thermo temperature according to measure points 73
Fig. 1. Visible ray and infrared ray field. 33
Fig. 2. Thermographic equipment components. 37
Fig. 3. Concrete wall and cavity dimension. 54
Fig. 4. Compressive strength test result(depth:3cm). 58
Fig. 5. Compressive strength test result(depth:6cm). 60
Fig. 6. Compressive strength test result(depth:9cm). 62
Fig. 7. Concrete strength decrease percentage. 63
Fig. 8. Variable arrival times according to cavity A and healthy portion. 67
Fig. 9. Variable arrival times according to cavity B and healthy portion. 68
Fig. 10. Variable arrival times according to cavity C and healthy portion. 69
Fig. 11. Variable thermo temperature according to measuring points. 71
Fig. 12. Thermographic analysis using the line profile. 72
Fig. 13. Variable thermo temperature according to measuring points. 73
Fig. 14. Thermographic analysis using the line profile. 74
Photo. 1. Build-up concrete wall. 55
Photo. 2. Schmidt hammer(DT-2000). 56
Photo. 3. Schmidt hammer test. 56
Photo. 4. Pundit and elastic wave test. 65
Photo. 5. Thermographic equipment and test. 70