EFFECT OF CONSTRUCTION FACTORS ON SURFACE DETERIORATION OF THE CROWN OF LINING CONCRETE

It is considered that lifting and spalling concrete of arch crown is important for the maintenance of mountain tunnels, and it is assumed that these deformations are caused by repeated expansion and shrinkage around the cracks due to changes in the environment inside the tunnel. In addition, it is considered that the surface layer quality of the lining concrete of arch crown affects the long-term deterioration of the concrete surface. It is assumed that these surface deteriorations are affected by the quality of the construction method. In this study, it is focusing on the residual laitance at the overlapping part of arch crown. The overlapping part of arch crown was simulated, and the air permeability test, bending test, and restrained drying shrinkage test were performed. Furthermore, by comparing with the situation where the lining concrete was applied in the actual scale, the effects of residual laitance at the overlapping part of arch crown on cracks patterns and the surface quality were investigated.

• Record URL:
  • https://doi.org/10.2208/jscejte.76.1_99
• Record URL:
  • https://www.jstage.jst.go.jp/article/jscejte/76/1/76_99/_pdf
• 
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=EFFECT%20OF%20CONSTRUCTION%20FACTORS%20ON%20SURFACE%20DETERIORATION%20OF%20THE%20CROWN%20OF%20LINING%20CONCRETE&author=T.%20SAITO&author=M.%20MEGURO&author=C.%20CHANG&author=K.%20AZUMA&author=M.%20IWANAMI&publication_year=2020
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/21856575
• Authors:
  • SAITO, Takahiro
  • MEGURO, Midori
  • CHANG, Chihhsuan
  • AZUMA, Kunikazu
  • Iwanami, Mitsuyasu
• Publication Date: 2020

Language

• English
• Japanese

Media Info

• Media Type: Web
• Pagination: pp 99-111
• Serial:
  • Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering)
  • Volume: 76
  • Issue Number: 1
  • Publisher: Japan Society of Civil Engineers
  • ISSN: 2185-6575
  • Serial URL: https://www.jstage.jst.go.jp/browse/jscejte/-char/en

Subject/Index Terms

• TRT Terms: Concrete; Cracking; Deformation; Mountains; Tunnel lining
• Subject Areas: Bridges and other structures; Construction; Highways; Materials;

Filing Info

• Accession Number: 01759455
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Nov 30 2020 5:32PM