Development of grouting method of fine sand with ultrafine cement grout

Yu Koizumi, Toshiyuki Tanaka, Jinya Takeuchi, Tomohiro Kanazawa, Makoto Nishigaki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Grouting is an important part of construction in rock and soil for such as controlling the flow of water, filling voids in the ground and strengthening grounds. Grouting method has advantages over other soil improvement methods of not discharging slimes and requiring large spaces. However, conventional cement grout was difficult to permeate into fine sand. Chemical solution grout shows high permeability ; on the other hand, the solidified ground is not strong and durable enough. The purpose of our work is to develop grouting methods with ultrafine cement (the average particle size 1.5ìm) grout. The authors conducted both laboratory and field grouting tests. As a result, the grout permeated into a one-meter long artificial ground composed of fine sand, where conventional superfine cement grout was not able to permeate. Furthermore, unconfined compressive strength of the solidified ground was 10 times as large as that of solidified ground with chemical solution grout. As for the field test, the ball-shaped solidified ground was observed in the grouted area, and its diameter was 190cm as designed. It is concluded from the tests that ultrafine cement grout showed a great permeability and high solidified strength.

Original languageEnglish
Pages (from-to)52-57
Number of pages6
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume61
Issue number1
DOIs
Publication statusPublished - Jan 1 2012

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Keywords

  • Grout
  • Grouting method
  • Lowered permeability coefficient
  • Permeability
  • Solidified strength
  • Ultrafine cement

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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