Understanding the performance of bridge decks through full-scale accelerated testing

被引:1
作者
Rashidi, Mehdi [1 ]
Azari, Hoda [2 ]
Braley, John [3 ]
Zobel, Robert [4 ]
机构
[1] Turner Fairbank Highway Res Ctr, Genex Syst, Mclean, VA 22101 USA
[2] Turner Fairbank Highway Res Ctr, Mclean, VA USA
[3] Rutgers State Univ, Ctr Adv Infrastructure & Transportat, New Brunswick, NJ USA
[4] Turner Fairbank Highway Res Ctr, Long Term Bridge Performance Program, Mclean, VA USA
关键词
bridges; full-scale tests; non-destructive testing; CONCRETE; GPR;
D O I
10.1680/jfoen.21.00032
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Understanding the long-term performance of bridges plays a major role in the selection of appropriate asset-management strategies, which eventually reduce life-cycle costs and extend the service life of a bridge. To understand bridge performance better, the Federal Highway Administration initiated a research project utilising accelerated testing of full-scale bridge superstructure systems subjected to cyclic moving wheel loads and freeze-thaw environmental conditions. As part of the research project, complementary non-destructive evaluation (NDE) techniques were used to assess the performance of a full-scale bridge deck during the curing and loading period. NDE results, shortly after construction, revealed a smaller cover depth of rebars in the middle section of the deck. This has likely created a preferential path for the subsequent deterioration of the deck. It was suggested to use a scaled version of the electrical resistivity (ER) values to improve the consistency between temporal ER measurements of the deck, and it was shown that combining construction information with NDE results can improve the interpretation of results. Overall, the results showed the importance of NDE for quality assurance of new construction and provided a better understating of the long-term bridge deck performance.
引用
收藏
页码:89 / 102
页数:14
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