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Creep, Shrinkage and CTE Evaluation: MoDOT's New Bridge Deck Mix Companion Testing to HPC Bridge Deck.
| 题名： | Creep, Shrinkage and CTE Evaluation: MoDOT's New Bridge Deck Mix Companion Testing to HPC Bridge Deck. |
| 作者： | LA GAMMA, J.; MYERS, J.; NIDHI, J. |
| 关键词： | *Bridges-; *Creep-shrinkage.;Creep-; Shrinkage-; Mix-proportioning; Coefficient-of-thermal-expansion. |
| 摘要： | Missouri Department of Transportation (MoDOT) RDT Research Project R-I00-002 'HPC for Bridge A6130 - Route 412 Pemiscot County' was recently completed in June of 2004. Among other research tasks, part of this research study investigated the creep, shrinkage and coefficient of thermal expansion (CTE) of Missouri's first high performance concrete (HPC) superstructure bridge. This study examined these aforementioned properties on both the prestressed concrete (PC) girders and the cast-in-place (CIP) deck which both utilized HPC on this aforementioned project. In 2003 the Missouri Department of Transportation (MoDOT) studied nine different mix designs for possible use in bridge deck applications (MoDOT Report RI01-044, 2003). The objective of this internal MoDOT study was to reduce the content of cementitious material to reduce shrinkage, but maintain good durability characteristics. Of the original nine mix designs, one was ultimately selected for use in an actual bridge deck application, namely, MoDOT Bridge A6671 near Waynesville, Missouri. There was interest to study how the mix design used in this bridge compared to the previous HPC deck mix design used in Bridge A6130. |
| 报告类型： | 科技报告 |
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