Implementation of desaturation in ground improvement with calcium carbonate precipitation

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06218
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geotechnical engineering
• Research Institution: Wakayama National College of Technology
• Principal Investigator: Hayashi Kazuyuki 和歌山工業高等専門学校, 環境都市工学科, 准教授 (30587853)
• Co-Investigator(Kenkyū-buntansha): 小林 彩乃 和歌山工業高等専門学校, 環境都市工学科, 助教 (30736153) ; 米光 裕 和歌山工業高等専門学校, 生物応用化学科, 教授 (20290778) ; 青木 仁孝 和歌山工業高等専門学校, 環境都市工学科, 助教 (80775809)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 地盤改良 / 炭酸カルシウム / 不飽和化

Outline of Final Research Achievements

This study investigates experimental study on cost lowering, increase in improved soil strength, and minimization of an environmental effect in ground improvement with calcium carbonate precipitation. Bio stimulation method is useful to precipitate calcium carbonate on soil grain surface. A low-tech down-flow hanging sponge (DHS) bioreactor system is available to enrich and produce of ureolytic microbes. Moreover, introduction of desaturation in the precipitation process of calcium carbonate enhances the soil strength.

Free Research Field

地盤工学