原文传递
USING SILICA FUME CONCRETE WITH FULL-DEPTH BRIDGE DECK CONSTRUCTION IN MINNESOTA.
| 题名： | USING SILICA FUME CONCRETE WITH FULL-DEPTH BRIDGE DECK CONSTRUCTION IN MINNESOTA. |
| 作者： | Embacher-E |
| 关键词： | Air-content; Bridge-decks; Chlorides-; Compressive-strength; Concrete-bridges; Construction-; Costs-; Field-tests; Inspection-; Laboratory-tests; Minnesota-; Performance-; Permeability-; Silica-fume; Silica-fume-balls; Slump-test |
| 摘要： | This report presents the results of a research project to evaluate the performance of six full-depth silica fume bridge decks, constructed between 1997 and 1999. The Minnesota Department of Transportation (Mn/DOT) constructed these decks to compare their performance and constructability in Minnesota, which involves the use of a seven-inch structural slab followed by a two-inch low slump overlay. Researchers conducted air content and slump field testing, visual inspections, and laboratory testing on chloride permeability, compressive strength, and hardened air system properties. In addition, they compared initial costs between the current deck system and the full-depth silica fume decks. The overall performance of the silica fume bridge decks has been good; however, two of the bridge decks did have problems related to the development of silica fume balls. Laboratory testing has shown that silica fume concrete performs better in terms of chloride permeability and compressive strength. Field tests have shown that placement of the silica fume concrete is comparable to a conventional concrete mix. Finally, cost comparisons have shown the placement of a full-depth silica fume deck to be slightly lower than the current deck system. |
| 总页数： | 2001/06. 9700-9900 pp68 |
| 报告类型： | 科技报告 |
相关文献
- Cracking and Chloride Contents in Reinforced Concrete Bridge Decks. Final rept. May 01-Feb 05.
- Silica Fume Concrete for Bridge Decks; Final rept
- Development of High-Performance Concrete Mixtures for Durable Bridge Decks in Montana Using Locally Available Materials. Final rept. January 2002-January 2005.
- Evaluation of Silica Fume in Bridge Deck Concrete Overlays.
- Simplified Full-Depth Precast Concrete Deck Panel Systems.
- Investigation of Materials for Thin Bonded Overlays on Bridge Decks.
检索历史
应用推荐
