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Crack Risk Evaluation of Early Age Concrete Based on the Distributed Optical Fiber Temperature Sensing
Joint Authors
Shi, Nannan
Chen, Yanyu
Li, Zhenbao
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-09-01
Country of Publication
Egypt
No. of Pages
13
Abstract EN
Cracks often appear in concrete arch dams, due to the thermal stress and low tensile strength of early age concrete.
There are three commonly used temperature controlling measures: controlling the casting temperature, burying cooling pipe, and protecting the surface.
However, because of the difficulty to obtain accurate temperature and thermal stress field of the concrete, the rationality and economy of these measures are not assessed validly before and after construction.
In this paper, a crack risk evaluation system for early age concrete is established, including distributed optical fiber temperature sensing (DTS), prediction of temperature and stress fields, and crack risk evaluation.
Based on the DTS temperature data, the back-analysis method is applied to retrieve the thermal parameters of concrete.
Then, the temperature and thermal stress of early age concrete are predicted using the reversed thermal parameters, as well as the laboratory test parameters.
Finally, under the proposed cracking risk evaluation principle, the cracking risk level of each concrete block is given; the preliminary and later temperature controlling measures were recommended, respectively.
The application of the proposed system in Xiluodu super high arch dam shows that this system works effectively for preventing cracks of early age concrete.
American Psychological Association (APA)
Shi, Nannan& Chen, Yanyu& Li, Zhenbao. 2016. Crack Risk Evaluation of Early Age Concrete Based on the Distributed Optical Fiber Temperature Sensing. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-13.
https://search.emarefa.net/detail/BIM-1096128
Modern Language Association (MLA)
Shi, Nannan…[et al.]. Crack Risk Evaluation of Early Age Concrete Based on the Distributed Optical Fiber Temperature Sensing. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-13.
https://search.emarefa.net/detail/BIM-1096128
American Medical Association (AMA)
Shi, Nannan& Chen, Yanyu& Li, Zhenbao. Crack Risk Evaluation of Early Age Concrete Based on the Distributed Optical Fiber Temperature Sensing. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-13.
https://search.emarefa.net/detail/BIM-1096128
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096128