Investigating the Influence of Moisture Content on Intelligent Soil Compaction

The intelligent compaction (IC) technology has been demonstrated as a powerful tool for soil compaction. However, the correlation between IC measurement values (ICMV) and in-situ tests has not been always consistent due to the influence of moisture content. The same density can be obtained for two different moisture contents at either side of the optimum moisture content, whereas without the same modulus. In this study, the influence of moisture contents on ICMV and in-situ point measurement values were examined by both in-situ and laboratory tests. By using the compaction curves from the gyratory compactor and field compaction, the impact of different moisture contents on soil modulus was identified; and the sensitivity of ICMV on the soil density and deflection due to varying moisture contents was explained. Another laboratory test, the vibratory compaction, could offer the target ICMV value from a modulus versus water content curve. Based on the test results in this study, a novel approach to eliminate the effect of moisture content variation and to improve the IC soil compaction was suggested.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AFP60 Standing Committee on Engineering Behavior of Unsaturated Geomaterials.
• Corporate Authors:

  Transportation Research Board

  ,    
• Authors:
  • Hu, Wei
  • Jia, Xiaoyang
  • Zhu, Xingyi
  • Su, Aiwu
  • Du, Yong
  • Gong, Hongren
  • Huang, Baoshan
• Conference:
  • Transportation Research Board 98th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2019-1-13 to 2019-1-17
• Date: 2019

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Glossary; References;
• Pagination: 6p

Subject/Index Terms

• TRT Terms: Field tests; Global Positioning System; Laboratory tests; Moisture content; Soil compaction; Subgrade materials
• Uncontrolled Terms: Intelligent compaction
• Geographic Terms: China
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 01697719
• Record Type: Publication
• Report/Paper Numbers: 19-04552
• Files: TRIS, TRB, ATRI
• Created Date: Mar 1 2019 3:51PM