논문 상세보기
pp.1-10
PURPOSES: Spalling is one of the primary problems that lead to the damage of concrete pavements. The purpose of the study is to analyze the impact range of spalling that occurred in an area of concrete pavement by applying a variety of nondestructive and destructive testing methods.
METHODS: Spalling of the concrete pavement was categorized into four different sizes, 0 cm, 7.5 cm, 15 cm, and 30 cm. Nondestructive and destructive tests were performed at the point of spalling and 1 m away, respectively, and the obtained results were compared. The nondestructive tests included the electrical resistance test and the ultrasonic velocity test as well as strength tests by Schmidt hammer and concrete tester. The destructive tests included the direct compressive strength test and the chloride content test using field cored specimens. The test results helped in the analysis of the correlation between the current spalling damage condition and the expected damage acceleration.
RESULTS: Based on the present study, the repair area and depth of spalling for a partial depth repair was suggested. It was also shown that the size of the spalling is highly correlated with the chloride content and the electrical resistance of the concrete pavement.
CONCLUSIONS: The degree of spalling deterioration was found to be highly correlated with the chloride content and electrical resistance of the concrete pavement and based on the results, the extent of repair could be determined more quantitatively.
1. 서론
2. 콘크리트 포장 스폴링 파손 및 제설제 영향
2.1. 국내 콘크리트 포장 줄눈부 보수기준
2.2. 콘크리트 포장에서의 스폴링 파손 현황 및원인분석
2.3. 염화물이 콘크리트에 미치는 영향
3. 실험계획 및 방법
3.1. 조사구간 선정
3.2. 현장조사 방법
4. 실험결과
4.1. 콘크리트포장 깊이별 염화물 함량
4.2. NDT종류별 스폴링크기와의 상관성분석
4.3. NDT종류별 염화물함량과의 상관성분석
5. 결론
REFERENCES
