碩士 / 國立臺灣科技大學 / 營建工程系 / 96 / The ratio of the bridge deck pavement area has largely increased since the expressways were established and formed a network. But many bridge deck pavements have been over the life expectancy, the government has to allocate much budgets for the improvement and maintenance of the bridge deck pavement. Considering the problems of budget shortage, difficult construction traffic management and the limited gravel source in Taiwan, the issue of the maintenance and the road life expectancy extension are more and more important. To adopt fog seal as preventive maintenance for the bridge deck pavement has became a major trend. The study took the 23-year-old bridge deck of Da Han Bridge as an example. The fog seal material was adopted for maintenance. It compared the improvements of bridge deck after 7 days and 180 days.
Field investigation results indicate that skid resistance is slightly lower after the fog sealing on the bridge deck but it’s still with the required range. The average depth of the bridge deck surface texture was lower which means the fog sealing materials can fix the existed breakage and cleavages of the bridge deck. The laboratory test results show that the viscosity of on site cores samples taken 7 days and 180 days after the fog sealing was reduced and the penetration had remarkable improvement. This meant that the fog sealing processing can activate the materials of the deck layer. Based on the
field investigation and laboratory testing results, we found that bridge deck had remarkable difference on the pavement performance. Therefore, the study concluded that the adoption of fog sealing on the bridge deck pavement maintenance will improve the service performance of the deck pavement.
| Identifer | oai:union.ndltd.org:TW/096NTUS5512061 |
| Date | January 2008 |
| Creators | Liang-Hsin Fan, 范良鑫 |
| Contributors | Der-Hsien Shen, 沈得縣 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 177 |
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