Study on Concrete Quality of Box Girder Based on Acoustic CT Technology

DOI

10.2991/icammce-18.2018.88How to use a DOI?

Keywords

CT technology, Box girder, Concrete, Quality evaluation

Abstract

The twenty-ninth span 1# box girder of grand bridge on a Expressway in Yunnan, China，which is broken suddenly during the hoisting and transportation, resulting in the overturning of the beam and partial breakage. This paper focuses on the study of concrete appearance and concrete strength by CT technology. The results show that the average wave velocity of concrete in the area detected by the left web CT is 4.60 Km/s, and the coefficient of variation is 0.12; the average wave velocity of concrete in the right web area is 4.68 Km/s and the coefficient of variation is 0.11. The concrete pouring quality of the box girder is grade B. There are some abnormal areas in the concrete of the left and right web, which have certain influence on the bearing capacity of the bridge.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jingxian Shi
AU  - Yingjie Cheng
PY  - 2018/05
DA  - 2018/05
TI  - Study on Concrete Quality of Box Girder Based on Acoustic CT Technology
BT  - Proceedings of the 2018 3rd International Conference on Advances in Materials, Mechatronics and Civil Engineering (ICAMMCE 2018)
PB  - Atlantis Press
SP  - 403
EP  - 406
SN  - 2352-5401
UR  - https://doi.org/10.2991/icammce-18.2018.88
DO  - 10.2991/icammce-18.2018.88
ID  - Shi2018/05
ER  -