Investigation on Construction Quality Indices for Concrete Box Girders
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Bibliographic Details
| Author(s): |
Wen-Qing Wu
Feng Lin Jia-Jia Fu |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas, Venice, Italy, 22-24 September 2010 | ||||
| Published in: | IABSE Symposium Venice 2010 | ||||
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| Page(s): | 606-607 | ||||
| Total no. of pages: | 7 | ||||
| Year: | 2010 | ||||
| DOI: | 10.2749/222137810796062923 | ||||
| Abstract: |
Based on three bridge dismantlement, two construction quality indices were investigated in-situ, which consisted of duct grouting compaction of prestressing tendons, excess concrete rate in box girder. The result indicated that the excess concrete rate in box-girders, varied between 10% to 20% and the concrete excess centred at the top slab and bottom slab. The duct for prestressing tendons were only partially grouted, with over 50% ungrouted for longitudinal tendons and over 70% ungrouted for transverse tendons. Obviously, this would increased the prestress loss in the tendons,and increased the possibility of structure cracking. It was helpful for realising the true performance of box-girders. |
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| Keywords: |
bridge concrete box girder construction quality duct grouting concrete excess
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