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Air permeability of cover concrete quality of precast box culverts affected by casting direction

  • May Huu Nguyen
  • Kenichiro NakaraiEmail author
  • Saeko Kajita
Conference paper
  • 18 Downloads
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 54)

Abstract

Casting direction is an external factor that can influence the properties, including air permeability of concrete structures. In the current study, the effect of this factor on the air permeability of precast box culverts was investigated. The Torrent air permeability test was used to measure coefficient of air permeability kT for two box culvert specimens produced using ordinary Portland cement, water-to-binder ratio of 0.485, different casting directions (vertical and horizontal) at the age of 3 months. The obtained results show the different cover concrete qualities between the surfaces of the horizontal casting specimen, whereas the shortcomings during casting process were detected of the vertical casting specimen.

Keywords

Cover concrete Air permeability Box culvert Casting direction 

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Notes

Acknowledgements

This study was supported by the All Japan Box-Culvert Association. The authors are grateful to Mr. Hideaki Karasawa, Mr. Yuji Tadokoro and other members of the association for assisting with the specimen preparation in experiments.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • May Huu Nguyen
    • 1
    • 2
  • Kenichiro Nakarai
    • 1
    Email author
  • Saeko Kajita
    • 1
  1. 1.Department of Civil and Environmental Engineering, Graduate School of EngineeringHiroshima UniversityHiroshimaJapan
  2. 2.Department of Bridge and Tunnel, Faculty of Civil EngineeringUniversity of Transport TechnologyHanoiVietnam

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