Development of the numerical model of heat and moisture transfer and freezing in soil at a cold district

• Project/Area Number: 26420507
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Hydraulic engineering
• Research Institution: Kindai University
• Principal Investigator: TAKANO Yasuhide 近畿大学, 理工学部, 准教授 (80330231)
• Research Collaborator: HAYASHI Masaki
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 凍結土壌 / 不凍水曲線 / 豊浦珪砂 / 真砂土 / 水分特性曲線 / 電気伝導度 / 砂質土壌

Outline of Final Research Achievements

To determine Soil Freezing Curves (SFC) with some soils under the difference speed of soil temperature change and the water, the soil freezing experiments were carried out using Toyoura sand and decomposed granite.
The results from these experiments are as follows: (1)Soil Freezing Curves of Toyoura sand using tap water and distilled water are very differ despite under the same soil water content and speed of soil temperature change.(2)Soil Freezing Curves of Toyoura sand under same soil water content are similar despite under the difference speed of soil temperature change. (3)Soil Freezing Curves of Toyoura sand and decomposed granite under same soil water content and speed of soil temperature change is similar except for immediately after the super cooling.

Research Products

• [Presentation] 温度変化速度が異なる真砂土および豊浦珪砂の不凍水曲線の比較 (2017)
  • Author(s): 高野保英
  • Organizer: 平成29年度土木学会第72回年次学術講演会
  • Place of Presentation: 九州大学伊都キャンパス
  • Year and Date: 2017-09-11
• [Presentation] 水質および温度変化過程が異なる砂質土壌の不凍水曲線の比較 (2016)
  • Author(s): 高野保英，Masaki Hayashi
  • Organizer: 平成2８年度全国大会第7１回年次学術講演会
  • Place of Presentation: 東北大学川内北キャンパス
  • Year and Date: 2016-09-07