Real-time measurement technique for soil physical properties in drainage process

2015 Fiscal Year Final Research Report

• Project/Area Number: 26850153
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Rural environmental engineering/Planning
• Research Institution: Shimane University
• Principal Investigator: Fukada Kotaro 島根大学, 生物資源科学部, 助教 (40633178)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 土壌物理学 / 土壌空気 / 音響測定

Outline of Final Research Achievements

Real-time acoustic measurement technique was developed for obtaining continuous air content of soils in drainage process. Water-saturated samples using Tottori dune sand was drained. I compared total air content obtained by drainage volume and mass of sample, and continuous air content obtained by acoustic method. It costs about 100 seconds to conduct a set of acoustic tests. Air content changed at a rate of 0.06～6 %/100 s in the first several minutes. Therefore, resolution time was sufficient except for first several tens of seconds. Measurement accuracy was about ±1 %. This was little different from the accuracy in the equilibrium state.

Free Research Field

農業土木