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EXPERIMENTAL VERIFICATION ON IMPROVING LONG-TERM HEALTH OF LINING CONCRETE BY CONTROLLING CRACKS
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- MIZUNO Maresuke
- 株式会社高速道路総合技術研究所 道路研究部
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- YAGI Hiroshi
- 株式会社高速道路総合技術研究所 道路研究部
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- IWAO Tetsuya
- 株式会社高速道路総合技術研究所 道路研究部
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- MATSUOKA Shigeru
- 鉄建建設株式会社 土木本部
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- NISHIMURA Kazuo
- 公立大学法人首都大学東京 都市環境学部
Bibliographic Information
- Other Title
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- 覆工コンクリートのひびわれ抑制による長期健全性向上に向けた実験的検証
Description
In the study, we carried out laboratory experiments and numerical analysis to verify how the curing environment and construction method of lining concrete cause cracks, so that we may prevent concrete pieces from falling and improve the long-term health of lining concrete. As a result, we found that the necessary compactness of concrete surface can be secured, if the concrete is cured in a wet condition for 7 days. As for the construction method, applying excessive compaction energy did not have a major impact on the quality of concrete. We also analyzed the crack propagation based on the physical properties obtained from laboratory tests. It was found that harmful cracks were not generated in the short-term (50 days), and in the long-term (50 years), occurrence and crack propagation caused by shrinkage strain of the concrete were not influenced by the curing environment. Based on these findings, we will propose construction management guidelines for medium-fluidity lining concrete.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering)
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Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering) 71 (3), I_11-I_27, 2015
Japan Society of Civil Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282680331463808
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- NII Article ID
- 130005142597
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- ISSN
- 21856575
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed