Design and construction control guidance for chemically stabilized pavement base layers.

Details

• Creators:
  Howard, Isaac L. ; Sullivan, W. Griffin ; Anderson, Brennan K. ; Shannon, Jay ; Cost, Tim
• Corporate Creators:
  Mississippi State University. Dept. of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Base course (Pavements)
  • Pavement design
  • Soil cement
  • Quality control
  • Portland cement
  • Slag cement
  • Soil compaction test
  • Modulus of elasticity
  • Thermal properties
  • Laboratory tests
  More +
• Publication/ Report Number:
  FHWA/MS-DOT-RD-13-206
• Resource Type:
  Tech Report
• Geographical Coverage:
  Mississippi
• Corporate Publisher:
  Mississippi. Dept. of Transportation
• Abstract:
  A laboratory and field study was conducted related to chemically stabilized pavement layers, which is also ; referred to as soil-cement. Soil-cement practices within MDOT related to Class 9C soils used for base layers ; were evaluated in this report. The overall objective was to provide draft design and quality control guidance that ; could be incorporated and/or specified to improve performance of soil-cement base layers. A total of 2,101 tests ; were performed to evaluate a variety of parameters. Testing included strength versus time, strength variability, ; compaction, elastic modulus, wheel tracking, and thermal profile measurement. One key component of the ; research was development of economical thermal profile equipment to evaluate compacted soil-cement during ; the first few hours of hydration. The primary intention of this equipment is a quality control tool. Another key ; component of the research was development of equipment that allowed soil-cement to be compacted inside a ; plastic mold that could be used for laboratory mix design, specimen preparation for pavement layer thickness ; design, and for quality control. Results indicated the plastic mold compaction approach has many advantages ; and should be implemented into design and quality control operations. At the present time, widespread use of ; thermal profiles for quality control is not recommended. Additional study, however, could result in effective ; implementation of thermal profiles into soil-cement construction projects on a more frequent basis.
  More +
• Format:
  PDF
• Funding:
  State Study 206
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27261/dot_27261_DS1.pdf
• File Type:
  [PDF - 8.82 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:23ef992da792070e68511dc7b0ab4d58f673d12f3ed945abf6918c728a4b0307