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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.7 No.1
- 발행연도
- 2013.3
- 수록면
- 79 - 93 (15page)
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초록· 키워드
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One of the biggest problems affecting bridges is the transverse cracking and deterioration of concrete bridge decks. The causes of early age cracking are primarily attributed to plastic shrinkage, temperature effects, autogenous shrinkage, and drying shrinkage. The cracks can be influenced by material characteristics, casting sequence, formwork, climate conditions, geometry, and time dependent factors. The cracking of bridge decks not only creates unsightly aesthetic condition but also greatly reduces durability. It leads to a loss of functionality, loss of stiffness, and ultimately loss of structural safety. This investigation consists of field, laboratory, and analytical phases. The experimental and field testing investigate the early age transverse cracking of bridge decks and evaluate the use of sealant materials. The research identifies suitable materials, for crack sealing, with an ability to span cracks of various widths and to achieve performance criteria such as penetration depth, bond strength, and elongation. This paper also analytically examines the effect of a wide range of parameters on the development of cracking such as the number of spans, the span length, girder spacing, deck thickness, concrete compressive strength, dead load, hydration, temperature, shrinkage, and creep. The importance of each parameter is identified and then evaluated. Also, the AASHTO Standard Specification limits liveload deflections to L/800 for ordinary bridges and L/1000 for bridges in urban areas that are subject to pedestrian use. The deflection is found to be an important parameter to affect cracking. A set of recommendations to limit the transverse deck cracks in bridge decks is also presented.
목차
Abstract
1. Introduction
2. Experimental Investigation
3. Field Investigation
4. Laboratory Investigation
5. Analytical Investigation
6. Results and Discussion
7. Conclusions
References
참고문헌 (15)
참고문헌 신청
1. [단행본] - ACI Committee 224 / 2001 / Control of cracking in concrete structures (ACI 224R-01) / American Concrete Institute
2. [단행본] - Altoubat, S. A. / 2000 / Creep, shrinkage and cracking of restrained concrete at early age / University of Illinois at Urbana-Champaign
3. [단행본] - Cady, P. D. / 1971 / Final report on the durability of bridge deck concrete / Pennsylvania Department of Transportation
4. [보고서] - Eppers, L. J. / 1998 / Transverse cracking in bridge decks
5. [학술지(정기간행물)] - Frosch, R. J. / 2003 / Investigation of bridge deck cracking in various bridge superstructure systems. Publication FHWA/IN/JTRP-2002/25 / Joint Transportation Research Program
2. [단행본] - Altoubat, S. A. / 2000 / Creep, shrinkage and cracking of restrained concrete at early age / University of Illinois at Urbana-Champaign
3. [단행본] - Cady, P. D. / 1971 / Final report on the durability of bridge deck concrete / Pennsylvania Department of Transportation
4. [보고서] - Eppers, L. J. / 1998 / Transverse cracking in bridge decks
5. [학술지(정기간행물)] - Frosch, R. J. / 2003 / Investigation of bridge deck cracking in various bridge superstructure systems. Publication FHWA/IN/JTRP-2002/25 / Joint Transportation Research Program
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